2050 lines
66 KiB
TypeScript
2050 lines
66 KiB
TypeScript
/**
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* 场景裂变 API
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*
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* 将一张产品图批量融合到多个场景图中
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* 支持多种生图模型：阿里生图、RUXA、Gemini、既梦
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*/
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import { NextResponse } from "next/server";
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import { z } from "zod";
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import { auth } from "@/app/(auth)/auth";
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import { db } from "@/lib/db";
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import { generatedImage } from "@/lib/db/schema";
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import {
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createMediaAssetRelation,
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getEnabledAiModelsWithProvider,
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getMediaAssetsByUserAndUrls,
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getSystemSetting,
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upsertMediaAsset,
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} from "@/lib/db/queries";
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import { uploadFile } from "@/lib/storage/service";
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import sharp from "sharp";
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import { createGeminiImage } from "@/lib/ai/providers/gemini-image";
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import { createVolcanoVision } from "@/lib/ai/providers/volcano-vision";
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import { createRuxaImage } from "@/lib/ai/providers/ruxa-image";
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import { createFalImage } from "@/lib/ai/providers/fal-image";
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import { createOpenAIImage } from "@/lib/ai/providers/openai-image";
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import { callQwen3Vl } from "@/lib/ai/qwen3-vl";
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import {
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canProcessSceneFusionProviderType,
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normalizeSceneFusionOutputParamsForCandidate,
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normalizeSceneFusionProviderType,
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type SceneFusionImageGenConfig,
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} from "@/lib/scene-fusion/output-capabilities";
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// 请求体 Schema
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const sceneFusionRequestSchema = z.object({
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productImage: z.string().min(1, "产品图不能为空"),
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productName: z.string().optional(), // 产品名称（如"沙发"）
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sceneMode: z.enum(["scene-fission", "multi-product-scene", "random-bg"]).optional(),
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aspectRatio: z.string().optional(), // 图片比例（如"1:1", "4:3", "auto"）
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imageSize: z.string().optional(), // 图片分辨率（如"1K", "2K", "4K"）
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scenes: z.array(z.object({
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id: z.string(),
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image: z.string().min(1, "场景图不能为空"),
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targetName: z.string().optional(), // 背景中需要被替换的物体名称（如"椅子"）
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customPrompt: z.string().optional(),
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})).min(1, "至少需要一个场景图").max(10, "最多支持10个场景图"),
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});
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type SceneFusionMode = "scene-fission" | "multi-product-scene" | "random-bg";
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// 默认提示词（当数据库未配置时使用）- 使用"参考"的表述方式
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const FALLBACK_PROMPT = "请参考第一张图片中的产品，将其自然地融合到第二张图片的场景中。要求：1)保持产品的整体外观、颜色、形状和设计风格与第一张图一致；2)调整产品的大小和角度以适应场景；3)注意光影和透视关系使融合自然。";
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const SCENE_FUSION_MODEL_COOLDOWN_MS = 2 * 60 * 1000;
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const SCENE_FUSION_MAX_ITEMS = 10;
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const SCENE_FUSION_REQUEST_STAGGER_MS = 350;
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const SCENE_FUSION_AGENT_TIMEOUT_MS = 20000;
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const SCENE_FUSION_AGENT_MAX_WORKERS = 1;
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const SCENE_FUSION_PROCESS_MAX_WORKERS = 1;
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const SCENE_FUSION_PRE_RMBG_TIMEOUT_MS = 60_000;
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const SCENE_FUSION_ECHO_HASH_TIMEOUT_MS = 20_000;
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const SCENE_FUSION_ECHO_HASH_THRESHOLD = 8;
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const SCENE_FUSION_STRICT_PROMPT_TAIL =
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"硬性要求：严禁直接返回第一张参考图（产品图）原图，必须保留第二张图的场景与构图，仅替换目标主体；若识别不确定，请优先保持第二张图背景不变并完成主体替换。";
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const SCENE_FUSION_RANDOM_BG_PROMPT_TAIL =
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"硬性要求：背景必须与原图明显不同（颜色、结构、元素至少两项显著变化），禁止保留原背景纹理或直接回传原图；仅保留产品主体并保证主体边缘完整自然。";
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const sceneFusionModelCooldown = new Map<string, number>();
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let sceneFusionRoundRobinCursor = 0;
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interface SceneFusionModelCandidate {
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model: {
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id: string;
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modelId: string;
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displayName: string;
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supportsVision: boolean;
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imageGenConfig?: SceneFusionImageGenConfig | null;
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};
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provider: {
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type: string;
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baseUrl: string;
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apiKey: string;
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};
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}
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interface SceneFusionAgentMeta {
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productName?: string;
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productSource?: "user" | "agent";
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productConfidence?: number;
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productModel?: string;
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sceneTargets: Array<{
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id: string;
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targetName?: string;
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source?: "user" | "agent";
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confidence?: number;
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model?: string;
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}>;
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}
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function pruneSceneFusionCooldown(now: number = Date.now()) {
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for (const [key, expireAt] of sceneFusionModelCooldown.entries()) {
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if (expireAt <= now) {
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sceneFusionModelCooldown.delete(key);
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}
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}
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}
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function isSceneFusionCandidateCoolingDown(
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candidate: SceneFusionModelCandidate,
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now: number = Date.now()
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): boolean {
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const expireAt = sceneFusionModelCooldown.get(candidate.model.id);
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if (!expireAt) return false;
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if (expireAt <= now) {
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sceneFusionModelCooldown.delete(candidate.model.id);
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return false;
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}
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return true;
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}
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function markSceneFusionCandidateFailed(candidate: SceneFusionModelCandidate, now: number = Date.now()) {
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sceneFusionModelCooldown.set(candidate.model.id, now + SCENE_FUSION_MODEL_COOLDOWN_MS);
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}
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function markSceneFusionCandidateHealthy(candidate: SceneFusionModelCandidate) {
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sceneFusionModelCooldown.delete(candidate.model.id);
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}
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function rotateCandidates<T>(items: T[], startOffset: number): T[] {
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if (items.length <= 1) {
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return [...items];
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}
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const normalizedOffset = ((startOffset % items.length) + items.length) % items.length;
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return [
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...items.slice(normalizedOffset),
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...items.slice(0, normalizedOffset),
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];
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}
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function shuffleCandidates<T>(items: T[]): T[] {
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const shuffled = [...items];
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for (let i = shuffled.length - 1; i > 0; i -= 1) {
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const j = Math.floor(Math.random() * (i + 1));
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[shuffled[i], shuffled[j]] = [shuffled[j], shuffled[i]];
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}
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return shuffled;
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}
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function getNextSceneFusionRoundRobinOffset(poolSize: number): number {
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if (poolSize <= 0) return 0;
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const offset = sceneFusionRoundRobinCursor % poolSize;
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sceneFusionRoundRobinCursor = (sceneFusionRoundRobinCursor + 1) % Number.MAX_SAFE_INTEGER;
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return offset;
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}
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function buildPreRmbgCandidateUrls(request: Request): string[] {
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const urls: string[] = [];
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const requestUrl = new URL(request.url);
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const requestHost = requestUrl.hostname.toLowerCase();
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const requestProtocol = requestUrl.protocol.replace(":", "");
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if (!(requestProtocol === "https" && (requestHost === "localhost" || requestHost === "127.0.0.1"))) {
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urls.push(new URL("/api/rmbg", request.url).toString());
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}
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const host = request.headers.get("host")?.trim();
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const protoHint = request.headers
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.get("x-forwarded-proto")
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?.split(",")[0]
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?.trim()
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.toLowerCase();
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const protocol = protoHint === "https" || protoHint === "http" ? protoHint : requestUrl.protocol.replace(":", "");
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if (host) {
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const normalizedHost = host.split(":")[0]?.toLowerCase() || "";
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const isLocalHost = normalizedHost === "localhost" || normalizedHost === "127.0.0.1";
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if (!(protocol === "https" && isLocalHost)) {
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urls.push(`${protocol}://${host}/api/rmbg`);
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}
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if (isLocalHost) {
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urls.push(`http://${host}/api/rmbg`);
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}
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}
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const localPort = requestUrl.port || process.env.PORT || "3125";
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urls.push(`http://127.0.0.1:${localPort}/api/rmbg`);
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urls.push(`http://localhost:${localPort}/api/rmbg`);
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return Array.from(new Set(urls));
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}
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function normalizeUrlForCompare(input: string): string {
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try {
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const parsed = new URL(input);
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return `${parsed.origin}${parsed.pathname}`;
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} catch {
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return input;
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}
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}
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async function fetchImageBufferWithTimeout(url: string, timeoutMs: number): Promise<Buffer> {
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const controller = new AbortController();
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const timeoutId = setTimeout(() => controller.abort(), timeoutMs);
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try {
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const response = await fetch(url, { signal: controller.signal });
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if (!response.ok) {
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throw new Error(`fetch_failed_${response.status}`);
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}
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return Buffer.from(await response.arrayBuffer());
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} finally {
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clearTimeout(timeoutId);
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}
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}
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async function getAverageHashBits(
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imageUrl: string,
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hashCache: Map<string, string>
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): Promise<string | null> {
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if (hashCache.has(imageUrl)) {
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return hashCache.get(imageUrl)!;
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}
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try {
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const buffer = await fetchImageBufferWithTimeout(imageUrl, SCENE_FUSION_ECHO_HASH_TIMEOUT_MS);
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const pixels = await sharp(buffer)
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.resize(8, 8, { fit: "fill" })
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.grayscale()
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.raw()
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.toBuffer();
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if (!pixels.length) return null;
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const total = pixels.reduce((sum, value) => sum + value, 0);
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const avg = total / pixels.length;
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const hashBits = Array.from(pixels)
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.map((value) => (value >= avg ? "1" : "0"))
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.join("");
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hashCache.set(imageUrl, hashBits);
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return hashBits;
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} catch (error) {
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console.warn("[SceneFusion] Echo hash compute skipped:", {
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imageUrl: imageUrl.slice(0, 120),
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error: error instanceof Error ? error.message : "unknown",
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});
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return null;
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}
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}
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function hammingDistanceBits(a: string, b: string): number {
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if (a.length !== b.length) {
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return Math.max(a.length, b.length);
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}
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let distance = 0;
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for (let index = 0; index < a.length; index += 1) {
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if (a[index] !== b[index]) {
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distance += 1;
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}
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}
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return distance;
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}
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async function detectEchoedProductResult(
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params: {
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requestId: string;
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sceneIndex: number;
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productImageUrl: string;
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generatedImageUrl: string;
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modelName: string;
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hashCache: Map<string, string>;
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}
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): Promise<{
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tooSimilar: boolean;
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reason?: string;
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hammingDistance?: number;
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}> {
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const normalizedProductUrl = normalizeUrlForCompare(params.productImageUrl);
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const normalizedGeneratedUrl = normalizeUrlForCompare(params.generatedImageUrl);
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if (normalizedProductUrl === normalizedGeneratedUrl) {
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return { tooSimilar: true, reason: "same_url" };
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}
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const [productHash, generatedHash] = await Promise.all([
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getAverageHashBits(params.productImageUrl, params.hashCache),
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getAverageHashBits(params.generatedImageUrl, params.hashCache),
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]);
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if (!productHash || !generatedHash) {
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return { tooSimilar: false };
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}
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const distance = hammingDistanceBits(productHash, generatedHash);
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if (distance <= SCENE_FUSION_ECHO_HASH_THRESHOLD) {
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console.warn(
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`[SceneFusion][${params.requestId}] Echo-guard hit: scene#${params.sceneIndex + 1}, model=${params.modelName}, distance=${distance}`
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);
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return {
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tooSimilar: true,
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reason: "hash_too_close",
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hammingDistance: distance,
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};
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}
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return { tooSimilar: false, hammingDistance: distance };
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}
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function waitSceneFusion(ms: number): Promise<void> {
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return new Promise((resolve) => setTimeout(resolve, ms));
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}
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function normalizeSceneFusionName(value: unknown): string {
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const raw = String(value ?? "").trim();
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if (!raw) return "";
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const normalized = raw
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.replace(/[：:，,。.!！?？、；;（）()[\]{}"'`]/g, " ")
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.replace(/\s+/g, " ")
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.trim();
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return normalized.slice(0, 16);
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}
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function extractJsonObject(text: string): Record<string, unknown> | null {
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const content = String(text || "").trim();
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if (!content) return null;
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const match = content.match(/\{[\s\S]*\}/);
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if (!match) return null;
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try {
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const parsed = JSON.parse(match[0]);
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if (parsed && typeof parsed === "object" && !Array.isArray(parsed)) {
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return parsed as Record<string, unknown>;
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}
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return null;
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} catch {
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return null;
|
||
}
|
||
}
|
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async function detectProductNameWithAgent(imageUrl: string): Promise<{
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name: string;
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confidence: number;
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model: string;
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} | null> {
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const prompt = [
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"你是电商图片分析助手。",
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"请识别图片中最核心、最主要的产品主体名称。",
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"要求：",
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"- 名称精简，2-8个字，尽量包含材质/品类（如：皮质沙发、木质餐椅、陶瓷花瓶）",
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"- 不要返回颜色描述句子，不要返回背景和场景词",
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"仅返回JSON：",
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'{\"productName\":\"名称\",\"confidence\":0.0}',
|
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].join("\n");
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const { text, model } = await callQwen3Vl({
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imageUrl,
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prompt,
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temperature: 0.1,
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maxTokens: 220,
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timeoutMs: SCENE_FUSION_AGENT_TIMEOUT_MS,
|
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retries: 1,
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});
|
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const parsed = extractJsonObject(text);
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const name = normalizeSceneFusionName(parsed?.productName);
|
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const confidenceRaw = Number(parsed?.confidence);
|
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const confidence = Number.isFinite(confidenceRaw) ? Math.max(0, Math.min(1, confidenceRaw)) : 0.7;
|
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|
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if (!name || confidence < 0.45) {
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return null;
|
||
}
|
||
|
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return { name, confidence, model };
|
||
}
|
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|
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async function detectTargetNameWithAgent(
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sceneImageUrl: string,
|
||
productNameHint: string
|
||
): Promise<{
|
||
name: string;
|
||
confidence: number;
|
||
model: string;
|
||
} | null> {
|
||
const prompt = [
|
||
"你是场景替换识别助手。",
|
||
`已知要替换进场景的产品是：${productNameHint || "该产品"}`,
|
||
"请识别当前场景图里最应该被替换的目标物体名称（与该产品品类最接近的场景主体）。",
|
||
"要求：",
|
||
"- 返回“完整物体名”，不要返回局部部件名",
|
||
"- 名称精简，2-8个字（如：餐椅、沙发、茶几、花瓶）",
|
||
"- 如果无法确定，返回最主要主体物体名",
|
||
"仅返回JSON：",
|
||
'{\"targetName\":\"名称\",\"confidence\":0.0}',
|
||
].join("\n");
|
||
|
||
const { text, model } = await callQwen3Vl({
|
||
imageUrl: sceneImageUrl,
|
||
prompt,
|
||
temperature: 0.1,
|
||
maxTokens: 220,
|
||
timeoutMs: SCENE_FUSION_AGENT_TIMEOUT_MS,
|
||
retries: 1,
|
||
});
|
||
|
||
const parsed = extractJsonObject(text);
|
||
const name = normalizeSceneFusionName(parsed?.targetName);
|
||
const confidenceRaw = Number(parsed?.confidence);
|
||
const confidence = Number.isFinite(confidenceRaw) ? Math.max(0, Math.min(1, confidenceRaw)) : 0.7;
|
||
|
||
if (!name || confidence < 0.4) {
|
||
return null;
|
||
}
|
||
|
||
return { name, confidence, model };
|
||
}
|
||
|
||
function extractStyleHintFromPrompt(customPrompt: string | undefined): string | undefined {
|
||
const content = String(customPrompt || "").trim();
|
||
if (!content) return undefined;
|
||
const quoted = content.match(/[“"]([^”"]+?)(?:风格|场景)/);
|
||
if (quoted?.[1]) {
|
||
return normalizeSceneFusionName(quoted[1]) || quoted[1].trim();
|
||
}
|
||
const styleOnly = content.match(/(?:替换背景为|背景为|风格为)\s*([^，。；]+)/);
|
||
if (styleOnly?.[1]) {
|
||
return normalizeSceneFusionName(styleOnly[1]) || styleOnly[1].trim();
|
||
}
|
||
return undefined;
|
||
}
|
||
|
||
function mergeCustomPrompt(basePrompt: string | undefined, addition: string | undefined): string | undefined {
|
||
const base = String(basePrompt || "").trim();
|
||
const extra = String(addition || "").trim();
|
||
if (!base && !extra) return undefined;
|
||
if (!base) return extra.slice(0, 280);
|
||
if (!extra) return base.slice(0, 280);
|
||
if (base.includes(extra)) return base.slice(0, 280);
|
||
if (extra.includes(base)) return extra.slice(0, 280);
|
||
return `${base} ${extra}`.slice(0, 280);
|
||
}
|
||
|
||
async function generateRandomBackgroundPromptWithAgent(params: {
|
||
productImageUrl: string;
|
||
productNameHint?: string;
|
||
styleHint?: string;
|
||
userPrompt?: string;
|
||
}): Promise<string | null> {
|
||
const prompt = [
|
||
"你是电商场景策划助手。",
|
||
`产品名称：${params.productNameHint || "该产品"}`,
|
||
params.styleHint ? `期望风格：${params.styleHint}` : "",
|
||
params.userPrompt ? `用户补充要求：${params.userPrompt}` : "",
|
||
"请基于产品图生成一条“仅描述背景场景”的中文提示词。",
|
||
"要求：",
|
||
"- 场景必须与产品品类匹配，适合商品展示",
|
||
"- 只描述背景、灯光、材质氛围，不改动产品主体外观",
|
||
"- 不要输出流程指令（例如“替换背景/保持主体”）",
|
||
"- 20~60字，语义具体可执行",
|
||
"仅返回 JSON：",
|
||
"{\"backgroundPrompt\":\"...\"}",
|
||
]
|
||
.filter(Boolean)
|
||
.join("\n");
|
||
|
||
const { text } = await callQwen3Vl({
|
||
imageUrl: params.productImageUrl,
|
||
prompt,
|
||
temperature: 0.2,
|
||
maxTokens: 240,
|
||
timeoutMs: SCENE_FUSION_AGENT_TIMEOUT_MS,
|
||
retries: 1,
|
||
});
|
||
|
||
const parsed = extractJsonObject(text);
|
||
const backgroundPromptRaw = String(parsed?.backgroundPrompt || "").replace(/\s+/g, " ").trim();
|
||
if (!backgroundPromptRaw || backgroundPromptRaw.length < 6) {
|
||
return null;
|
||
}
|
||
return backgroundPromptRaw.slice(0, 120);
|
||
}
|
||
|
||
async function enrichRandomBackgroundScenesWithAgent(params: {
|
||
requestId: string;
|
||
productImageUrl: string;
|
||
productName?: string;
|
||
scenes: Array<{
|
||
id: string;
|
||
image: string;
|
||
targetName?: string;
|
||
customPrompt?: string;
|
||
imageUrl: string;
|
||
}>;
|
||
}): Promise<Array<{
|
||
id: string;
|
||
image: string;
|
||
targetName?: string;
|
||
customPrompt?: string;
|
||
imageUrl: string;
|
||
}>> {
|
||
const nextScenes = params.scenes.map((scene) => ({ ...scene }));
|
||
const workerTargets = nextScenes;
|
||
if (workerTargets.length === 0) return nextScenes;
|
||
|
||
let cursor = 0;
|
||
const workerCount = Math.max(1, Math.min(SCENE_FUSION_AGENT_MAX_WORKERS, workerTargets.length));
|
||
const workers = Array.from({ length: workerCount }, async () => {
|
||
while (true) {
|
||
const current = cursor;
|
||
cursor += 1;
|
||
if (current >= workerTargets.length) break;
|
||
|
||
const scene = workerTargets[current];
|
||
if (!scene) continue;
|
||
|
||
try {
|
||
if (!normalizeSceneFusionName(scene.targetName) && params.productName) {
|
||
scene.targetName = params.productName;
|
||
}
|
||
|
||
const styleHint = extractStyleHintFromPrompt(scene.customPrompt);
|
||
const generatedPrompt = await generateRandomBackgroundPromptWithAgent({
|
||
productImageUrl: params.productImageUrl,
|
||
productNameHint: params.productName,
|
||
styleHint,
|
||
userPrompt: scene.customPrompt,
|
||
});
|
||
|
||
if (generatedPrompt) {
|
||
scene.customPrompt = mergeCustomPrompt(scene.customPrompt, `场景建议：${generatedPrompt}`);
|
||
}
|
||
} catch (error) {
|
||
console.warn(
|
||
`[SceneFusion][${params.requestId}] Random scene prompt enhance skipped: scene=${scene.id}`,
|
||
error
|
||
);
|
||
}
|
||
}
|
||
});
|
||
|
||
await Promise.all(workers);
|
||
return nextScenes;
|
||
}
|
||
|
||
async function enrichSceneLabelsWithAgent(params: {
|
||
requestId: string;
|
||
productImageUrl: string;
|
||
productName?: string;
|
||
scenes: Array<{
|
||
id: string;
|
||
image: string;
|
||
targetName?: string;
|
||
customPrompt?: string;
|
||
imageUrl: string;
|
||
}>;
|
||
}): Promise<{
|
||
productName?: string;
|
||
scenes: Array<{
|
||
id: string;
|
||
image: string;
|
||
targetName?: string;
|
||
customPrompt?: string;
|
||
imageUrl: string;
|
||
}>;
|
||
meta: SceneFusionAgentMeta;
|
||
}> {
|
||
const clonedScenes = params.scenes.map((scene) => ({ ...scene }));
|
||
const userProductName = normalizeSceneFusionName(params.productName);
|
||
let resolvedProductName = userProductName;
|
||
|
||
const meta: SceneFusionAgentMeta = {
|
||
productName: userProductName || undefined,
|
||
productSource: userProductName ? "user" : undefined,
|
||
sceneTargets: clonedScenes.map((scene) => ({
|
||
id: scene.id,
|
||
targetName: normalizeSceneFusionName(scene.targetName) || undefined,
|
||
source: normalizeSceneFusionName(scene.targetName) ? "user" : undefined,
|
||
})),
|
||
};
|
||
|
||
try {
|
||
const productDetected = await detectProductNameWithAgent(params.productImageUrl);
|
||
if (productDetected?.name) {
|
||
if (!resolvedProductName) {
|
||
resolvedProductName = productDetected.name;
|
||
meta.productSource = "agent";
|
||
} else {
|
||
meta.productSource = "user";
|
||
}
|
||
meta.productName = resolvedProductName || productDetected.name;
|
||
meta.productConfidence = productDetected.confidence;
|
||
meta.productModel = productDetected.model;
|
||
}
|
||
} catch (error) {
|
||
console.warn(`[SceneFusion][${params.requestId}] Product detect skipped:`, error);
|
||
}
|
||
|
||
const unresolvedIndexes = clonedScenes
|
||
.map((scene, index) => ({
|
||
index,
|
||
hasTarget: Boolean(normalizeSceneFusionName(scene.targetName)),
|
||
sameAsProduct: scene.imageUrl === params.productImageUrl,
|
||
}))
|
||
.filter((item) => !item.hasTarget && !item.sameAsProduct)
|
||
.map((item) => item.index);
|
||
|
||
if (unresolvedIndexes.length === 0) {
|
||
return {
|
||
productName: resolvedProductName || undefined,
|
||
scenes: clonedScenes,
|
||
meta,
|
||
};
|
||
}
|
||
|
||
let cursor = 0;
|
||
const workerCount = Math.max(1, Math.min(SCENE_FUSION_AGENT_MAX_WORKERS, unresolvedIndexes.length));
|
||
|
||
const workers = Array.from({ length: workerCount }, async () => {
|
||
while (true) {
|
||
const current = cursor;
|
||
cursor += 1;
|
||
if (current >= unresolvedIndexes.length) break;
|
||
|
||
const sceneIndex = unresolvedIndexes[current]!;
|
||
const scene = clonedScenes[sceneIndex]!;
|
||
try {
|
||
const targetDetected = await detectTargetNameWithAgent(
|
||
scene.imageUrl,
|
||
resolvedProductName || "产品"
|
||
);
|
||
if (!targetDetected?.name) continue;
|
||
scene.targetName = targetDetected.name;
|
||
const metaScene = meta.sceneTargets.find((item) => item.id === scene.id);
|
||
if (metaScene) {
|
||
metaScene.targetName = targetDetected.name;
|
||
metaScene.source = "agent";
|
||
metaScene.confidence = targetDetected.confidence;
|
||
metaScene.model = targetDetected.model;
|
||
}
|
||
} catch (error) {
|
||
console.warn(
|
||
`[SceneFusion][${params.requestId}] Scene target detect skipped: scene=${scene.id}`,
|
||
error
|
||
);
|
||
}
|
||
}
|
||
});
|
||
|
||
await Promise.all(workers);
|
||
|
||
return {
|
||
productName: resolvedProductName || undefined,
|
||
scenes: clonedScenes,
|
||
meta,
|
||
};
|
||
}
|
||
|
||
function buildSceneFusionCandidatePool(
|
||
allModels: Awaited<ReturnType<typeof getEnabledAiModelsWithProvider>>,
|
||
preferredModelId: string
|
||
): SceneFusionModelCandidate[] {
|
||
const backendConfiguredImageModels = allModels
|
||
.filter((entry) => {
|
||
if (!entry?.model?.isEnabled) return false;
|
||
if (!entry?.model?.supportsImageGen) return false;
|
||
if (entry?.model?.isSubModel) return false;
|
||
return true;
|
||
})
|
||
.map((entry) => ({
|
||
model: {
|
||
id: String(entry.model.id),
|
||
modelId: String(entry.model.modelId || ""),
|
||
displayName: String(entry.model.displayName || entry.model.modelId || entry.model.id),
|
||
supportsVision: Boolean(entry.model.supportsVision),
|
||
imageGenConfig: (entry.model.imageGenConfig || null) as SceneFusionImageGenConfig | null,
|
||
},
|
||
provider: {
|
||
type: normalizeSceneFusionProviderType(String(entry.provider.type || "")),
|
||
baseUrl: String(entry.provider.baseUrl || ""),
|
||
apiKey: String(entry.provider.apiKey || ""),
|
||
},
|
||
}))
|
||
.filter(
|
||
(candidate) =>
|
||
Boolean(candidate.model.modelId) &&
|
||
Boolean(candidate.provider.type) &&
|
||
Boolean(candidate.provider.apiKey)
|
||
);
|
||
|
||
if (backendConfiguredImageModels.length <= 1) {
|
||
return backendConfiguredImageModels;
|
||
}
|
||
|
||
const preferred = preferredModelId
|
||
? backendConfiguredImageModels.find((candidate) => candidate.model.id === preferredModelId)
|
||
: undefined;
|
||
|
||
if (!preferred) {
|
||
return shuffleCandidates(backendConfiguredImageModels);
|
||
}
|
||
|
||
const rest = backendConfiguredImageModels.filter(
|
||
(candidate) => candidate.model.id !== preferred.model.id
|
||
);
|
||
return [preferred, ...shuffleCandidates(rest)];
|
||
}
|
||
|
||
/**
|
||
* 获取场景裂变配置
|
||
*/
|
||
async function getSceneFusionConfig() {
|
||
try {
|
||
const setting = await getSystemSetting({ key: "scene_fusion_config" });
|
||
if (setting?.value) {
|
||
const config = setting.value as {
|
||
enabled?: boolean;
|
||
defaultPrompt?: string;
|
||
maxScenes?: number;
|
||
modelId?: string;
|
||
preRmbgEnabled?: boolean;
|
||
};
|
||
return {
|
||
enabled: config.enabled ?? true,
|
||
defaultPrompt: config.defaultPrompt || FALLBACK_PROMPT,
|
||
maxScenes: Math.min(config.maxScenes ?? SCENE_FUSION_MAX_ITEMS, SCENE_FUSION_MAX_ITEMS),
|
||
modelId: config.modelId || "",
|
||
preRmbgEnabled: config.preRmbgEnabled ?? true,
|
||
};
|
||
}
|
||
} catch (error) {
|
||
console.error("[SceneFusion] Failed to load config:", error);
|
||
}
|
||
|
||
return {
|
||
enabled: true,
|
||
defaultPrompt: FALLBACK_PROMPT,
|
||
maxScenes: SCENE_FUSION_MAX_ITEMS,
|
||
modelId: "",
|
||
preRmbgEnabled: true,
|
||
};
|
||
}
|
||
|
||
async function preprocessProductImageWithRmbg(
|
||
request: Request,
|
||
requestId: string,
|
||
productImageUrl: string,
|
||
preRmbgEnabled: boolean
|
||
): Promise<{
|
||
productImageUrl: string;
|
||
usedPreRmbg: boolean;
|
||
provider?: string;
|
||
reason?: string;
|
||
}> {
|
||
if (!preRmbgEnabled) {
|
||
return {
|
||
productImageUrl,
|
||
usedPreRmbg: false,
|
||
reason: "disabled_by_config",
|
||
};
|
||
}
|
||
|
||
const cookie = request.headers.get("cookie");
|
||
if (!cookie) {
|
||
return {
|
||
productImageUrl,
|
||
usedPreRmbg: false,
|
||
reason: "missing_cookie",
|
||
};
|
||
}
|
||
|
||
const candidateUrls = buildPreRmbgCandidateUrls(request);
|
||
let lastReason = "no_candidate_url";
|
||
|
||
console.log(
|
||
`[SceneFusion][${requestId}] Pre-RMBG start: ${productImageUrl.substring(0, 120)}..., candidates=${candidateUrls.join(" | ")}`
|
||
);
|
||
|
||
for (const rmbgUrl of candidateUrls) {
|
||
const controller = new AbortController();
|
||
const timeoutId = setTimeout(() => controller.abort(), SCENE_FUSION_PRE_RMBG_TIMEOUT_MS);
|
||
try {
|
||
const response = await fetch(rmbgUrl, {
|
||
method: "POST",
|
||
headers: {
|
||
"Content-Type": "application/json",
|
||
cookie,
|
||
},
|
||
body: JSON.stringify({
|
||
imageUrl: productImageUrl,
|
||
prompt: "场景裂变预处理-抠图",
|
||
skipGallerySave: true,
|
||
}),
|
||
signal: controller.signal,
|
||
});
|
||
|
||
const payload = await response.json().catch(() => null) as Record<string, unknown> | null;
|
||
|
||
if (!response.ok) {
|
||
lastReason = `request_failed_${response.status}`;
|
||
console.warn(`[SceneFusion][${requestId}] Pre-RMBG candidate failed: ${rmbgUrl}`, {
|
||
status: response.status,
|
||
detail: payload?.detail || payload?.error || "unknown",
|
||
});
|
||
continue;
|
||
}
|
||
|
||
const cleanedUrl = String(payload?.original_url || payload?.thumbnail_url || "").trim();
|
||
if (!cleanedUrl || cleanedUrl === productImageUrl) {
|
||
lastReason = cleanedUrl ? "same_as_source" : "empty_result";
|
||
console.warn(`[SceneFusion][${requestId}] Pre-RMBG candidate invalid result: ${rmbgUrl}`, {
|
||
reason: lastReason,
|
||
});
|
||
continue;
|
||
}
|
||
|
||
return {
|
||
productImageUrl: cleanedUrl,
|
||
usedPreRmbg: true,
|
||
provider: String(payload?.provider || "unknown"),
|
||
};
|
||
} catch (error) {
|
||
lastReason = error instanceof Error ? error.message : "exception";
|
||
console.warn(`[SceneFusion][${requestId}] Pre-RMBG candidate exception: ${rmbgUrl}`, error);
|
||
} finally {
|
||
clearTimeout(timeoutId);
|
||
}
|
||
}
|
||
|
||
return {
|
||
productImageUrl,
|
||
usedPreRmbg: false,
|
||
reason: lastReason,
|
||
};
|
||
}
|
||
|
||
/**
|
||
* 创建缩略图
|
||
*/
|
||
async function createThumbnail(buffer: Buffer): Promise<Buffer> {
|
||
try {
|
||
const thumbnailBuffer = await sharp(buffer)
|
||
.resize(400, 400, { fit: "inside", withoutEnlargement: true })
|
||
.jpeg({ quality: 80 })
|
||
.toBuffer();
|
||
return thumbnailBuffer;
|
||
} catch (error) {
|
||
console.error("[SceneFusion] Failed to create thumbnail:", error);
|
||
return buffer;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 生成唯一文件名
|
||
*/
|
||
function generateFilename(prefix: string, extension: string): string {
|
||
const timestamp = Date.now();
|
||
const random = Math.random().toString(36).substring(2, 8);
|
||
return `${prefix}-${timestamp}-${random}.${extension}`;
|
||
}
|
||
|
||
/**
|
||
* 将 Base64 图片上传到 S3 获取 URL
|
||
*/
|
||
async function uploadBase64ToS3(base64Data: string, prefix: string = "scene-fusion"): Promise<string> {
|
||
try {
|
||
// 移除 data URL 前缀
|
||
const base64Clean = base64Data.replace(/^data:image\/\w+;base64,/, "");
|
||
const buffer = Buffer.from(base64Clean, "base64");
|
||
|
||
const filename = generateFilename(`${prefix}-ref`, "png");
|
||
const result = await uploadFile(filename, buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength));
|
||
console.log(`[SceneFusion] Uploaded reference image to: ${result.url}`);
|
||
return result.url;
|
||
} catch (error) {
|
||
console.error("[SceneFusion] Failed to upload reference image:", error);
|
||
throw error;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 下载图片并上传到 S3
|
||
*/
|
||
async function downloadAndUploadToS3(
|
||
imageUrl: string,
|
||
prefix: string = "scene-fusion"
|
||
): Promise<{ thumbnail: string; original: string }> {
|
||
try {
|
||
console.log("[SceneFusion] Downloading image from:", imageUrl.substring(0, 100) + "...");
|
||
|
||
const response = await fetch(imageUrl);
|
||
if (!response.ok) {
|
||
throw new Error(`Failed to download image: ${response.status}`);
|
||
}
|
||
|
||
const buffer = Buffer.from(await response.arrayBuffer());
|
||
console.log(`[SceneFusion] Downloaded image, size: ${buffer.length} bytes`);
|
||
|
||
// 创建缩略图
|
||
const thumbnailBuffer = await createThumbnail(buffer);
|
||
|
||
// 上传原图
|
||
const originalFilename = generateFilename(`${prefix}-orig`, "png");
|
||
const originalResult = await uploadFile(originalFilename, buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength));
|
||
console.log(`[SceneFusion] Uploaded original to: ${originalResult.url}`);
|
||
|
||
// 上传缩略图
|
||
const thumbnailFilename = generateFilename(`${prefix}-thumb`, "jpg");
|
||
const thumbnailArrayBuffer = new Uint8Array(thumbnailBuffer).buffer;
|
||
const thumbnailResult = await uploadFile(thumbnailFilename, thumbnailArrayBuffer);
|
||
console.log(`[SceneFusion] Uploaded thumbnail to: ${thumbnailResult.url}`);
|
||
|
||
return {
|
||
original: originalResult.url,
|
||
thumbnail: thumbnailResult.url,
|
||
};
|
||
} catch (error) {
|
||
console.error("[SceneFusion] Failed to download/upload image:", error);
|
||
throw error;
|
||
}
|
||
}
|
||
|
||
async function saveSceneFusionImageRecord(params: {
|
||
userId: string;
|
||
thumbnailUrl: string;
|
||
originalUrl: string;
|
||
imageSize: string;
|
||
prompt: string;
|
||
modelId: string;
|
||
sourceImageUrls?: string[];
|
||
}): Promise<void> {
|
||
let lastError: unknown = null;
|
||
let savedImage:
|
||
| {
|
||
id: string;
|
||
}
|
||
| null = null;
|
||
for (let attempt = 1; attempt <= 3; attempt += 1) {
|
||
try {
|
||
([savedImage] = await db.insert(generatedImage).values({
|
||
userId: params.userId,
|
||
chatId: null,
|
||
messageId: null,
|
||
thumbnailUrl: params.thumbnailUrl,
|
||
originalUrl: params.originalUrl,
|
||
imageSize: params.imageSize,
|
||
prompt: params.prompt,
|
||
modelId: params.modelId,
|
||
}).returning());
|
||
break;
|
||
} catch (error) {
|
||
lastError = error;
|
||
if (attempt < 3) {
|
||
await waitSceneFusion(120 * attempt);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!savedImage) {
|
||
throw lastError instanceof Error ? lastError : new Error("保存到相册失败");
|
||
}
|
||
|
||
try {
|
||
const sourceAssets =
|
||
Array.isArray(params.sourceImageUrls) && params.sourceImageUrls.length > 0
|
||
? await getMediaAssetsByUserAndUrls({
|
||
userId: params.userId,
|
||
urls: params.sourceImageUrls,
|
||
})
|
||
: [];
|
||
const media = await upsertMediaAsset({
|
||
userId: params.userId,
|
||
mediaType: "image",
|
||
sourceType: "edited",
|
||
status: "ready",
|
||
originalUrl: params.originalUrl,
|
||
previewUrl: params.originalUrl,
|
||
thumbnailUrl: params.thumbnailUrl,
|
||
displayName: params.prompt.slice(0, 80),
|
||
prompt: params.prompt,
|
||
modelId: params.modelId,
|
||
sourceTable: "GeneratedImage",
|
||
sourceRowId: savedImage.id,
|
||
primaryParentAssetId: sourceAssets[0]?.id ?? null,
|
||
metadata: {
|
||
imageSize: params.imageSize,
|
||
sourceImageUrls: params.sourceImageUrls ?? [],
|
||
},
|
||
});
|
||
if (media) {
|
||
for (const sourceAsset of sourceAssets) {
|
||
await createMediaAssetRelation({
|
||
userId: params.userId,
|
||
fromAssetId: sourceAsset.id,
|
||
toAssetId: media.id,
|
||
relationType: "edited_from",
|
||
metadata: {
|
||
prompt: params.prompt,
|
||
},
|
||
});
|
||
}
|
||
}
|
||
} catch (assetError) {
|
||
console.error("[SceneFusion] ⚠️ MediaAsset 注册失败:", assetError);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 根据 aspectRatio 和 imageSize 计算实际尺寸
|
||
* @param aspectRatio - 宽高比，如 "1:1", "4:3", "16:9", "auto"
|
||
* @param imageSize - 分辨率等级，如 "1K", "2K", "4K"
|
||
* @returns 尺寸字符串，如 "1024*1024"，或 undefined（auto 模式）
|
||
*/
|
||
function calculateSize(aspectRatio: string, imageSize: string): string | undefined {
|
||
// auto 模式：不设置尺寸，让 API 根据输入图片自动决定
|
||
if (aspectRatio === "auto") {
|
||
return undefined;
|
||
}
|
||
|
||
// 根据分辨率等级确定基准像素
|
||
const baseSizeMap: Record<string, number> = {
|
||
"1K": 1024,
|
||
"2K": 1536,
|
||
"4K": 2048,
|
||
};
|
||
const baseSize = baseSizeMap[imageSize] || 1536;
|
||
|
||
// 根据比例计算宽高
|
||
const ratioMap: Record<string, [number, number]> = {
|
||
"1:1": [1, 1],
|
||
"4:3": [4, 3],
|
||
"3:4": [3, 4],
|
||
"16:9": [16, 9],
|
||
"9:16": [9, 16],
|
||
};
|
||
|
||
const ratio = ratioMap[aspectRatio];
|
||
if (!ratio) {
|
||
return undefined;
|
||
}
|
||
|
||
const [w, h] = ratio;
|
||
// 保持总像素接近 baseSize * baseSize，同时维持比例
|
||
const scale = Math.sqrt((baseSize * baseSize) / (w * h));
|
||
let width = Math.round(w * scale);
|
||
let height = Math.round(h * scale);
|
||
|
||
// 确保宽高在 512-2048 范围内
|
||
const clamp = (v: number) => Math.max(512, Math.min(2048, v));
|
||
width = clamp(width);
|
||
height = clamp(height);
|
||
|
||
return `${width}*${height}`;
|
||
}
|
||
|
||
/**
|
||
* 调用阿里生图 API
|
||
*/
|
||
async function callAlibabaImageAPI(
|
||
baseURL: string,
|
||
apiKey: string,
|
||
modelId: string,
|
||
productImageUrl: string,
|
||
sceneImageUrl: string,
|
||
prompt: string,
|
||
size?: string
|
||
): Promise<string> {
|
||
// 构建消息内容：产品图 + 场景图 + 提示词
|
||
const content = [
|
||
{ image: productImageUrl },
|
||
{ image: sceneImageUrl },
|
||
{ text: prompt },
|
||
];
|
||
|
||
const requestBody = {
|
||
model: modelId,
|
||
input: {
|
||
messages: [
|
||
{
|
||
role: "user",
|
||
content,
|
||
},
|
||
],
|
||
},
|
||
parameters: {
|
||
n: 1,
|
||
...(size && { size }),
|
||
prompt_extend: true,
|
||
watermark: false,
|
||
},
|
||
};
|
||
|
||
console.log(`[SceneFusion][${modelId}] Request Debug:
|
||
- Index: Scene ${sceneImageUrl.substring(sceneImageUrl.length-15)}
|
||
- Product URL: ${productImageUrl}
|
||
- Scene URL: ${sceneImageUrl}
|
||
- Size: ${size || 'auto'}
|
||
- Prompt: ${prompt}
|
||
`);
|
||
|
||
const response = await fetch(baseURL, {
|
||
method: "POST",
|
||
headers: {
|
||
"Content-Type": "application/json",
|
||
Authorization: `Bearer ${apiKey}`,
|
||
},
|
||
body: JSON.stringify(requestBody),
|
||
});
|
||
|
||
const data = await response.json();
|
||
|
||
// 打印完整响应用于调试
|
||
console.log(`[SceneFusion][${modelId}] Full API Response:`, JSON.stringify(data, null, 2));
|
||
|
||
if (!response.ok || data.code) {
|
||
console.error("[SceneFusion] API Error Response:", JSON.stringify(data, null, 2));
|
||
throw new Error(data.message || (data.code ? `Error ${data.code}: ${data.message}` : `API request failed: ${response.status}`));
|
||
}
|
||
|
||
// 提取生成的图片 URL
|
||
const choices = data.output?.choices;
|
||
if (!choices || choices.length === 0) {
|
||
console.error("[SceneFusion] No choices in response, output:", data.output);
|
||
throw new Error("No images in response");
|
||
}
|
||
|
||
const imageContent = choices[0]?.message?.content;
|
||
console.log(`[SceneFusion] Image content array:`, JSON.stringify(imageContent, null, 2));
|
||
|
||
if (!imageContent || imageContent.length === 0) {
|
||
throw new Error("No image content in response");
|
||
}
|
||
|
||
// 遍历所有内容项，找到 image 类型的
|
||
let generatedImageUrl: string | undefined;
|
||
for (const item of imageContent) {
|
||
if (item.image) {
|
||
generatedImageUrl = item.image;
|
||
console.log(`[SceneFusion] Found image URL in content item`);
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (!generatedImageUrl) {
|
||
console.error("[SceneFusion] No image URL found in content:", imageContent);
|
||
throw new Error("No image URL in response");
|
||
}
|
||
|
||
// 检查返回的图片 URL 是否与输入相同（可能是 API 返回了原图）
|
||
if (generatedImageUrl === productImageUrl || generatedImageUrl === sceneImageUrl) {
|
||
console.warn(`[SceneFusion] ⚠️ WARNING: API returned same URL as input!`);
|
||
console.warn(`[SceneFusion] - Generated URL: ${generatedImageUrl}`);
|
||
console.warn(`[SceneFusion] - Product URL: ${productImageUrl}`);
|
||
console.warn(`[SceneFusion] - Scene URL: ${sceneImageUrl}`);
|
||
}
|
||
|
||
console.log("[SceneFusion] Generated image URL:", generatedImageUrl.substring(0, 100) + "...");
|
||
return generatedImageUrl;
|
||
}
|
||
|
||
/**
|
||
* 构建智能提示词
|
||
* @param defaultPrompt - 默认提示词模板
|
||
* @param productName - 产品名称（如"沙发"）
|
||
* @param targetName - 背景中需要被替换的物体名称（如"椅子"）
|
||
* @param customPrompt - 用户补充的关键词
|
||
*/
|
||
function buildPrompt(
|
||
defaultPrompt: string,
|
||
productName?: string,
|
||
targetName?: string,
|
||
customPrompt?: string,
|
||
sceneMode: SceneFusionMode = "scene-fission"
|
||
): string {
|
||
let prompt = defaultPrompt;
|
||
|
||
if (sceneMode === "random-bg") {
|
||
const subject = productName || "产品";
|
||
prompt = `请以第一张图片中的${subject}为唯一主体，对第二张图片进行背景重绘。要求：1)${subject}外观、材质、颜色与细节保持一致；2)允许轻微调整主体位置与角度以匹配新背景；3)背景需要完整重建并与原图明显不同；4)光影透视自然，输出商业摄影质感。`;
|
||
} else if (productName && targetName) {
|
||
// 如果用户提供了具体的产品名称和被替换物体名称，构建更精确的提示词
|
||
// 使用"参考图1"的表述方式，并强调产品的视觉特征
|
||
prompt = `请参考第一张图片中的${productName}，将其自然地融合到第二张图片的场景中，替换掉场景中的${targetName}。要求：1)保持${productName}的整体外观、颜色、形状和设计风格与第一张图一致；2)调整${productName}的大小和角度以适应场景；3)注意光影和透视关系使融合自然。`;
|
||
} else if (productName) {
|
||
prompt = `请参考第一张图片中的${productName}，将其自然地融合到第二张图片的场景中。要求：1)保持${productName}的整体外观、颜色、形状和设计风格与第一张图一致；2)调整${productName}的大小和角度以适应场景；3)注意光影和透视关系使融合自然。`;
|
||
} else if (targetName) {
|
||
prompt = `请参考第一张图片中的产品，将其自然地融合到第二张图片的场景中，替换掉场景中的${targetName}。要求：1)保持产品的整体外观、颜色、形状和设计风格与第一张图一致；2)调整产品的大小和角度以适应场景；3)注意光影和透视关系使融合自然。`;
|
||
}
|
||
|
||
// 添加用户补充的关键词
|
||
if (customPrompt) {
|
||
prompt = `${prompt} 补充要求：${customPrompt}`;
|
||
}
|
||
|
||
if (sceneMode === "random-bg") {
|
||
if (!prompt.includes("背景必须与原图明显不同")) {
|
||
prompt = `${prompt} ${SCENE_FUSION_RANDOM_BG_PROMPT_TAIL}`;
|
||
}
|
||
} else if (!prompt.includes("严禁直接返回第一张参考图")) {
|
||
prompt = `${prompt} ${SCENE_FUSION_STRICT_PROMPT_TAIL}`;
|
||
}
|
||
|
||
return prompt;
|
||
}
|
||
|
||
/**
|
||
* 通用场景处理函数 - 根据 provider 类型调用不同的实现
|
||
*/
|
||
async function processSceneWithProvider(
|
||
productImageUrl: string,
|
||
sceneImageUrl: string,
|
||
productName: string | undefined,
|
||
targetName: string | undefined,
|
||
customPrompt: string | undefined,
|
||
defaultPrompt: string,
|
||
sceneMode: SceneFusionMode,
|
||
provider: { type: string; baseUrl: string; apiKey: string },
|
||
modelId: string,
|
||
aspectRatio?: string,
|
||
imageSize?: string
|
||
): Promise<{ thumbnail: string; original: string; prompt: string }> {
|
||
// 构建智能提示词
|
||
const prompt = buildPrompt(defaultPrompt, productName, targetName, customPrompt, sceneMode);
|
||
|
||
console.log(`[SceneFusion] Built prompt: ${prompt}`);
|
||
console.log(`[SceneFusion] Provider type: ${provider.type}`);
|
||
|
||
// 根据 provider 类型选择不同的处理逻辑
|
||
switch (provider.type) {
|
||
case "alibaba-image":
|
||
return processWithAlibabaImage(productImageUrl, sceneImageUrl, prompt, provider, modelId, aspectRatio, imageSize);
|
||
|
||
case "ruxa-image":
|
||
return processWithRuxaImage(productImageUrl, sceneImageUrl, prompt, provider, modelId, aspectRatio, imageSize);
|
||
|
||
case "fal-image":
|
||
return processWithFalImage(productImageUrl, sceneImageUrl, prompt, provider, modelId, aspectRatio, imageSize);
|
||
|
||
case "openai-image":
|
||
return processWithOpenAIImage(productImageUrl, sceneImageUrl, prompt, provider, modelId, aspectRatio, imageSize);
|
||
|
||
case "gemini":
|
||
case "gemini-image":
|
||
return processWithGemini(productImageUrl, sceneImageUrl, prompt, provider, modelId, aspectRatio, imageSize);
|
||
|
||
case "volcano-vision":
|
||
return processWithVolcanoVision(productImageUrl, sceneImageUrl, prompt, provider, modelId, aspectRatio, imageSize);
|
||
|
||
default:
|
||
throw new Error(`不支持的模型类型: ${provider.type}`);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 使用阿里生图模型处理
|
||
*/
|
||
async function processWithAlibabaImage(
|
||
productImageUrl: string,
|
||
sceneImageUrl: string,
|
||
prompt: string,
|
||
provider: { baseUrl: string; apiKey: string },
|
||
modelId: string,
|
||
aspectRatio?: string,
|
||
imageSize?: string
|
||
): Promise<{ thumbnail: string; original: string; prompt: string }> {
|
||
// 计算尺寸
|
||
const size = calculateSize(aspectRatio || "auto", imageSize || "2K");
|
||
|
||
// 调用阿里生图 API
|
||
const generatedImageUrl = await callAlibabaImageAPI(
|
||
provider.baseUrl,
|
||
provider.apiKey,
|
||
modelId,
|
||
productImageUrl,
|
||
sceneImageUrl,
|
||
prompt,
|
||
size
|
||
);
|
||
|
||
// 下载并上传到 S3
|
||
const uploaded = await downloadAndUploadToS3(generatedImageUrl, "scene-fusion-alibaba");
|
||
|
||
return { ...uploaded, prompt };
|
||
}
|
||
|
||
/**
|
||
* 使用 Gemini 模型处理
|
||
*/
|
||
async function processWithGemini(
|
||
productImageUrl: string,
|
||
sceneImageUrl: string,
|
||
prompt: string,
|
||
provider: { baseUrl: string; apiKey: string },
|
||
modelId: string,
|
||
aspectRatio?: string,
|
||
imageSize?: string
|
||
): Promise<{ thumbnail: string; original: string; prompt: string }> {
|
||
console.log(`[SceneFusion][Gemini] Processing with model: ${modelId}`);
|
||
|
||
// 创建 Gemini provider
|
||
const geminiProvider = createGeminiImage({
|
||
baseURL: provider.baseUrl,
|
||
apiKey: provider.apiKey,
|
||
});
|
||
|
||
// 构建消息格式（Gemini 使用 OpenAI 兼容格式）
|
||
const messages = [
|
||
{
|
||
role: "user",
|
||
content: [
|
||
{ type: "image_url", image_url: { url: productImageUrl } },
|
||
{ type: "image_url", image_url: { url: sceneImageUrl } },
|
||
{ type: "text", text: prompt },
|
||
],
|
||
},
|
||
];
|
||
|
||
// 调用 Gemini API
|
||
const result = await geminiProvider.chat(modelId).doGenerate({
|
||
messages,
|
||
imageParams: {
|
||
aspectRatio: aspectRatio || "auto",
|
||
imageSize: imageSize || "2K",
|
||
imageCount: 1,
|
||
},
|
||
});
|
||
|
||
// 解析返回的 Markdown 格式图片
|
||
const { thumbnail, original } = parseImageFromMarkdown(result.text);
|
||
|
||
return { thumbnail, original, prompt };
|
||
}
|
||
|
||
/**
|
||
* 使用 RUXA 模型处理
|
||
*/
|
||
async function processWithRuxaImage(
|
||
productImageUrl: string,
|
||
sceneImageUrl: string,
|
||
prompt: string,
|
||
provider: { baseUrl: string; apiKey: string },
|
||
modelId: string,
|
||
aspectRatio?: string,
|
||
imageSize?: string
|
||
): Promise<{ thumbnail: string; original: string; prompt: string }> {
|
||
console.log(`[SceneFusion][RUXA] Processing with model: ${modelId}`);
|
||
|
||
const ruxaProvider = createRuxaImage({
|
||
baseURL: provider.baseUrl,
|
||
apiKey: provider.apiKey,
|
||
});
|
||
|
||
const messages = [
|
||
{
|
||
role: "user",
|
||
content: [
|
||
{ type: "image_url", image_url: { url: productImageUrl } },
|
||
{ type: "image_url", image_url: { url: sceneImageUrl } },
|
||
{ type: "text", text: prompt },
|
||
],
|
||
},
|
||
];
|
||
|
||
const result = await ruxaProvider.chat(modelId).doGenerate({
|
||
messages,
|
||
imageParams: {
|
||
aspectRatio: aspectRatio || "auto",
|
||
imageSize: imageSize || "2K",
|
||
imageCount: 1,
|
||
},
|
||
});
|
||
|
||
const { thumbnail, original } = parseImageFromMarkdown(result.text);
|
||
return { thumbnail, original, prompt };
|
||
}
|
||
|
||
async function processWithFalImage(
|
||
productImageUrl: string,
|
||
sceneImageUrl: string,
|
||
prompt: string,
|
||
provider: { baseUrl: string; apiKey: string },
|
||
modelId: string,
|
||
aspectRatio?: string,
|
||
imageSize?: string
|
||
): Promise<{ thumbnail: string; original: string; prompt: string }> {
|
||
console.log(`[SceneFusion][FAL] Processing with model: ${modelId}`);
|
||
|
||
const falProvider = createFalImage({
|
||
baseURL: provider.baseUrl,
|
||
apiKey: provider.apiKey,
|
||
});
|
||
|
||
const messages = [
|
||
{
|
||
role: "user",
|
||
content: [
|
||
{ type: "image_url", image_url: { url: productImageUrl } },
|
||
{ type: "image_url", image_url: { url: sceneImageUrl } },
|
||
{ type: "text", text: prompt },
|
||
],
|
||
},
|
||
];
|
||
|
||
const result = await falProvider.chat(modelId).doGenerate({
|
||
messages,
|
||
imageParams: {
|
||
aspectRatio: aspectRatio || "auto",
|
||
imageSize: imageSize || "2K",
|
||
imageCount: 1,
|
||
},
|
||
});
|
||
|
||
const { thumbnail, original } = parseImageFromMarkdown(result.text);
|
||
return { thumbnail, original, prompt };
|
||
}
|
||
|
||
async function processWithOpenAIImage(
|
||
productImageUrl: string,
|
||
sceneImageUrl: string,
|
||
prompt: string,
|
||
provider: { baseUrl: string; apiKey: string },
|
||
modelId: string,
|
||
aspectRatio?: string,
|
||
imageSize?: string
|
||
): Promise<{ thumbnail: string; original: string; prompt: string }> {
|
||
console.log(`[SceneFusion][OpenAI Image] Processing with model: ${modelId}`);
|
||
|
||
const openAIImageProvider = createOpenAIImage({
|
||
baseURL: provider.baseUrl,
|
||
apiKey: provider.apiKey,
|
||
});
|
||
|
||
const messages = [
|
||
{
|
||
role: "user",
|
||
content: [
|
||
{ type: "image_url", image_url: { url: productImageUrl } },
|
||
{ type: "image_url", image_url: { url: sceneImageUrl } },
|
||
{ type: "text", text: prompt },
|
||
],
|
||
},
|
||
];
|
||
|
||
const result = await openAIImageProvider.chat(modelId).doGenerate({
|
||
messages,
|
||
imageParams: {
|
||
aspectRatio: aspectRatio || "auto",
|
||
imageSize: imageSize || "2K",
|
||
imageCount: 1,
|
||
},
|
||
});
|
||
|
||
const { thumbnail, original } = parseImageFromMarkdown(result.text);
|
||
return { thumbnail, original, prompt };
|
||
}
|
||
|
||
/**
|
||
* 使用既梦/火山模型处理
|
||
*/
|
||
async function processWithVolcanoVision(
|
||
productImageUrl: string,
|
||
sceneImageUrl: string,
|
||
prompt: string,
|
||
provider: { baseUrl: string; apiKey: string },
|
||
modelId: string,
|
||
aspectRatio?: string,
|
||
imageSize?: string
|
||
): Promise<{ thumbnail: string; original: string; prompt: string }> {
|
||
console.log(`[SceneFusion][Volcano] Processing with model: ${modelId}`);
|
||
|
||
// 创建 Volcano Vision provider
|
||
const volcanoProvider = createVolcanoVision({
|
||
baseURL: provider.baseUrl,
|
||
apiKey: provider.apiKey,
|
||
});
|
||
|
||
// 构建消息格式
|
||
const messages = [
|
||
{
|
||
role: "user",
|
||
content: [
|
||
{ type: "image_url", image_url: { url: productImageUrl } },
|
||
{ type: "image_url", image_url: { url: sceneImageUrl } },
|
||
{ type: "text", text: prompt },
|
||
],
|
||
},
|
||
];
|
||
|
||
// 调用 Volcano Vision API
|
||
const result = await volcanoProvider.chat(modelId).doGenerate({
|
||
messages,
|
||
imageParams: {
|
||
aspectRatio: aspectRatio || "auto",
|
||
imageSize: imageSize || "2K",
|
||
imageCount: 1,
|
||
},
|
||
});
|
||
|
||
// 解析返回的 Markdown 格式图片
|
||
const { thumbnail, original } = parseImageFromMarkdown(result.text);
|
||
|
||
return { thumbnail, original, prompt };
|
||
}
|
||
|
||
/**
|
||
* 从 Markdown 格式解析图片 URL
|
||
* 格式: 
|
||
*/
|
||
function parseImageFromMarkdown(markdown: string): { thumbnail: string; original: string } {
|
||
console.log(`[SceneFusion] Parsing markdown: ${markdown.substring(0, 200)}...`);
|
||
|
||
// 匹配  格式
|
||
const match = markdown.match(/!\[thumb\|\|\|([^|]+)\|\|\|[^\]]*\]\(([^)]+)\)/);
|
||
if (match) {
|
||
return {
|
||
original: match[1],
|
||
thumbnail: match[2],
|
||
};
|
||
}
|
||
|
||
// 尝试匹配普通图片格式 
|
||
const simpleMatch = markdown.match(/!\[[^\]]*\]\(([^)]+)\)/);
|
||
if (simpleMatch) {
|
||
return {
|
||
original: simpleMatch[1],
|
||
thumbnail: simpleMatch[1],
|
||
};
|
||
}
|
||
|
||
throw new Error("无法从响应中解析图片 URL");
|
||
}
|
||
|
||
/**
|
||
* 处理单个场景 (保留旧函数用于兼容)
|
||
*/
|
||
async function processScene(
|
||
productImageUrl: string,
|
||
sceneImageUrl: string,
|
||
productName: string | undefined,
|
||
targetName: string | undefined,
|
||
customPrompt: string | undefined,
|
||
defaultPrompt: string,
|
||
sceneMode: SceneFusionMode,
|
||
baseURL: string,
|
||
apiKey: string,
|
||
modelId: string,
|
||
size?: string
|
||
): Promise<{ thumbnail: string; original: string; prompt: string }> {
|
||
// 构建智能提示词
|
||
const prompt = buildPrompt(defaultPrompt, productName, targetName, customPrompt, sceneMode);
|
||
|
||
console.log(`[SceneFusion] Built prompt: ${prompt}`);
|
||
|
||
// 调用阿里生图 API
|
||
const generatedImageUrl = await callAlibabaImageAPI(
|
||
baseURL,
|
||
apiKey,
|
||
modelId,
|
||
productImageUrl,
|
||
sceneImageUrl,
|
||
prompt,
|
||
size
|
||
);
|
||
|
||
// 下载并上传到 S3
|
||
const uploaded = await downloadAndUploadToS3(generatedImageUrl, "scene-fusion");
|
||
|
||
return { ...uploaded, prompt };
|
||
}
|
||
|
||
async function processSceneWithDiversity(
|
||
params: {
|
||
productImageUrl: string;
|
||
sceneImageUrl: string;
|
||
productName?: string;
|
||
targetName?: string;
|
||
customPrompt?: string;
|
||
defaultPrompt: string;
|
||
sceneMode: SceneFusionMode;
|
||
aspectRatio?: string;
|
||
imageSize?: string;
|
||
sceneIndex: number;
|
||
requestOffset: number;
|
||
requestId: string;
|
||
candidates: SceneFusionModelCandidate[];
|
||
imageHashCache: Map<string, string>;
|
||
}
|
||
): Promise<{
|
||
result: { thumbnail: string; original: string; prompt: string };
|
||
candidate: SceneFusionModelCandidate;
|
||
attempts: number;
|
||
}> {
|
||
const supportedCandidates = params.candidates.filter((candidate) =>
|
||
canProcessSceneFusionProviderType(candidate.provider.type)
|
||
);
|
||
if (supportedCandidates.length === 0) {
|
||
throw new Error("后台已配置生图模型中暂无可用于场景裂变的供应商，请检查模型供应商类型");
|
||
}
|
||
|
||
const rotatedCandidates = rotateCandidates(
|
||
supportedCandidates,
|
||
params.requestOffset + params.sceneIndex
|
||
);
|
||
pruneSceneFusionCooldown();
|
||
|
||
const healthyCandidates = rotatedCandidates.filter(
|
||
(candidate) => !isSceneFusionCandidateCoolingDown(candidate)
|
||
);
|
||
const attemptCandidates =
|
||
healthyCandidates.length > 0 ? healthyCandidates : rotatedCandidates;
|
||
|
||
console.log(
|
||
`[SceneFusion][${params.requestId}] Scene#${params.sceneIndex + 1} candidate order: ${attemptCandidates
|
||
.map((candidate) => `${candidate.model.displayName}/${candidate.provider.type}`)
|
||
.join(" -> ")}`
|
||
);
|
||
|
||
const failureReasons: string[] = [];
|
||
|
||
for (let attemptIndex = 0; attemptIndex < attemptCandidates.length; attemptIndex += 1) {
|
||
const candidate = attemptCandidates[attemptIndex]!;
|
||
try {
|
||
const normalizedOutputParams = normalizeSceneFusionOutputParamsForCandidate(candidate, {
|
||
aspectRatio: params.aspectRatio,
|
||
imageSize: params.imageSize,
|
||
});
|
||
if (normalizedOutputParams.changed) {
|
||
console.log(
|
||
`[SceneFusion][${params.requestId}] Candidate ${candidate.model.displayName} output params normalized: ${normalizedOutputParams.changes.join(", ")}`
|
||
);
|
||
}
|
||
|
||
const result = await processSceneWithProvider(
|
||
params.productImageUrl,
|
||
params.sceneImageUrl,
|
||
params.productName,
|
||
params.targetName,
|
||
params.customPrompt,
|
||
params.defaultPrompt,
|
||
params.sceneMode,
|
||
{
|
||
type: candidate.provider.type,
|
||
baseUrl: candidate.provider.baseUrl,
|
||
apiKey: candidate.provider.apiKey,
|
||
},
|
||
candidate.model.modelId,
|
||
normalizedOutputParams.aspectRatio,
|
||
normalizedOutputParams.imageSize
|
||
);
|
||
|
||
const echoCheck = await detectEchoedProductResult({
|
||
requestId: params.requestId,
|
||
sceneIndex: params.sceneIndex,
|
||
productImageUrl: params.productImageUrl,
|
||
generatedImageUrl: result.original,
|
||
modelName: candidate.model.displayName,
|
||
hashCache: params.imageHashCache,
|
||
});
|
||
if (echoCheck.tooSimilar) {
|
||
const detail =
|
||
typeof echoCheck.hammingDistance === "number"
|
||
? `hamming=${echoCheck.hammingDistance}`
|
||
: echoCheck.reason || "unknown";
|
||
throw new Error(`生成结果疑似回传产品图（${detail}）`);
|
||
}
|
||
|
||
markSceneFusionCandidateHealthy(candidate);
|
||
return {
|
||
result,
|
||
candidate,
|
||
attempts: attemptIndex + 1,
|
||
};
|
||
} catch (error) {
|
||
const errorMessage = error instanceof Error ? error.message : "未知错误";
|
||
failureReasons.push(`${candidate.model.displayName}: ${errorMessage}`);
|
||
markSceneFusionCandidateFailed(candidate);
|
||
console.error("[SceneFusion] Candidate failed, try next:", {
|
||
requestId: params.requestId,
|
||
sceneIndex: params.sceneIndex,
|
||
attempt: attemptIndex + 1,
|
||
model: candidate.model.modelId,
|
||
provider: candidate.provider.type,
|
||
error: errorMessage,
|
||
});
|
||
}
|
||
}
|
||
|
||
const reason = failureReasons.join("；");
|
||
throw new Error(
|
||
reason
|
||
? `多样性模式下所有可用模型均失败：${reason}`
|
||
: "多样性模式下所有可用模型均失败"
|
||
);
|
||
}
|
||
|
||
export async function POST(request: Request) {
|
||
try {
|
||
// 1. 认证
|
||
const session = await auth();
|
||
if (!session?.user?.id) {
|
||
return NextResponse.json(
|
||
{ error: "未登录" },
|
||
{ status: 401 }
|
||
);
|
||
}
|
||
|
||
// 2. 获取场景裂变配置
|
||
const config = await getSceneFusionConfig();
|
||
|
||
if (!config.enabled) {
|
||
return NextResponse.json(
|
||
{ error: "场景裂变功能已被管理员禁用" },
|
||
{ status: 403 }
|
||
);
|
||
}
|
||
|
||
// 3. 解析请求体
|
||
const json = await request.json();
|
||
const parseResult = sceneFusionRequestSchema.safeParse(json);
|
||
|
||
if (!parseResult.success) {
|
||
return NextResponse.json(
|
||
{ error: parseResult.error.errors[0].message },
|
||
{ status: 400 }
|
||
);
|
||
}
|
||
|
||
const { productImage, productName, sceneMode, aspectRatio, imageSize, scenes } = parseResult.data;
|
||
const requestId = `sf-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
|
||
const resolvedSceneMode = sceneMode || "scene-fission";
|
||
|
||
// 计算输出尺寸
|
||
const size = calculateSize(aspectRatio || "auto", imageSize || "2K");
|
||
console.log(`[SceneFusion] Output settings: aspectRatio=${aspectRatio || 'auto'}, imageSize=${imageSize || '2K'}, calculated size=${size || 'auto'}`);
|
||
|
||
// 检查场景数量限制
|
||
const effectiveMaxScenes = Math.min(config.maxScenes, SCENE_FUSION_MAX_ITEMS);
|
||
if (scenes.length > effectiveMaxScenes) {
|
||
return NextResponse.json(
|
||
{ error: `最多只能添加 ${effectiveMaxScenes} 个场景` },
|
||
{ status: 400 }
|
||
);
|
||
}
|
||
|
||
console.log(`[SceneFusion] Processing ${scenes.length} scenes for user ${session.user.id}`);
|
||
console.log(`[SceneFusion] Product name: ${productName || '(not specified)'}`);
|
||
console.log(`[SceneFusion] Scene mode: ${resolvedSceneMode}`);
|
||
console.log(`[SceneFusion] Using default prompt: ${config.defaultPrompt.substring(0, 50)}...`);
|
||
console.log(`[SceneFusion] Preferred model ID: ${config.modelId || '(none)'}`);
|
||
|
||
// 4. 获取生图模型池（固定多样性模式）
|
||
const allModels = await getEnabledAiModelsWithProvider();
|
||
const candidateModels = buildSceneFusionCandidatePool(allModels, config.modelId);
|
||
if (config.modelId && !candidateModels.some((candidate) => candidate.model.id === config.modelId)) {
|
||
console.warn(
|
||
`[SceneFusion] Preferred model ${config.modelId} not available, fallback to full diversity pool`
|
||
);
|
||
}
|
||
|
||
if (candidateModels.length === 0) {
|
||
return NextResponse.json(
|
||
{ error: "未找到可用模型，请在后台启用至少一个支持生图的模型并配置供应商 API Key" },
|
||
{ status: 500 }
|
||
);
|
||
}
|
||
|
||
console.log(
|
||
`[SceneFusion] Diversity candidates: ${candidateModels
|
||
.map((candidate) => `${candidate.model.displayName}(${candidate.provider.type})`)
|
||
.join(", ")}`
|
||
);
|
||
const unsupportedCandidates = candidateModels.filter(
|
||
(candidate) => !canProcessSceneFusionProviderType(candidate.provider.type)
|
||
);
|
||
if (unsupportedCandidates.length > 0) {
|
||
console.warn(
|
||
`[SceneFusion] Skip unsupported providers for scene fusion: ${unsupportedCandidates
|
||
.map((candidate) => `${candidate.model.displayName}(${candidate.provider.type})`)
|
||
.join(", ")}`
|
||
);
|
||
}
|
||
const nonVisionCandidates = candidateModels.filter(
|
||
(candidate) => !candidate.model.supportsVision
|
||
);
|
||
if (nonVisionCandidates.length > 0) {
|
||
console.warn(
|
||
`[SceneFusion] Models without supportsVision are included for failover diversity: ${nonVisionCandidates
|
||
.map((candidate) => `${candidate.model.displayName}(${candidate.provider.type})`)
|
||
.join(", ")}`
|
||
);
|
||
}
|
||
const requestOffset = getNextSceneFusionRoundRobinOffset(
|
||
Math.max(1, candidateModels.length)
|
||
);
|
||
console.log(
|
||
`[SceneFusion][${requestId}] Round-robin offset=${requestOffset}, scenes=${scenes.length}, candidates=${candidateModels.length}`
|
||
);
|
||
|
||
// 5. 预处理：将 Base64 图片上传到 S3
|
||
let productImageUrl = productImage;
|
||
if (productImage.startsWith("data:")) {
|
||
productImageUrl = await uploadBase64ToS3(productImage, "scene-fusion-product");
|
||
}
|
||
const shouldForcePreRmbg = resolvedSceneMode === "random-bg";
|
||
const preprocessedProduct = await preprocessProductImageWithRmbg(
|
||
request,
|
||
requestId,
|
||
productImageUrl,
|
||
shouldForcePreRmbg ? true : config.preRmbgEnabled
|
||
);
|
||
const fusionProductImageUrl = preprocessedProduct.productImageUrl;
|
||
console.log(
|
||
`[SceneFusion][${requestId}] Pre-RMBG result: used=${preprocessedProduct.usedPreRmbg}, provider=${preprocessedProduct.provider || "-"}, reason=${preprocessedProduct.reason || "-"}`
|
||
);
|
||
|
||
const processedScenes = await Promise.all(
|
||
scenes.map(async (scene) => {
|
||
let sceneImageUrl = scene.image;
|
||
if (scene.image.startsWith("data:")) {
|
||
sceneImageUrl = await uploadBase64ToS3(scene.image, "scene-fusion-scene");
|
||
}
|
||
return {
|
||
...scene,
|
||
imageUrl: sceneImageUrl,
|
||
};
|
||
})
|
||
);
|
||
|
||
const enriched = await enrichSceneLabelsWithAgent({
|
||
requestId,
|
||
productImageUrl: fusionProductImageUrl,
|
||
productName,
|
||
scenes: processedScenes,
|
||
});
|
||
const resolvedProductName = enriched.productName;
|
||
let resolvedScenes = enriched.scenes;
|
||
if (resolvedSceneMode === "random-bg") {
|
||
resolvedScenes = await enrichRandomBackgroundScenesWithAgent({
|
||
requestId,
|
||
productImageUrl: fusionProductImageUrl,
|
||
productName: resolvedProductName,
|
||
scenes: resolvedScenes,
|
||
});
|
||
}
|
||
const resolvedSceneMap = new Map(resolvedScenes.map((scene) => [scene.id, scene]));
|
||
const imageHashCache = new Map<string, string>();
|
||
|
||
console.log(
|
||
`[SceneFusion][${requestId}] Agent labels: product=${resolvedProductName || "(none)"}; targets=${resolvedScenes
|
||
.map((scene) => `${scene.id}:${scene.targetName || "-"}`)
|
||
.join(", ")}`
|
||
);
|
||
if (resolvedSceneMode === "random-bg") {
|
||
console.log(
|
||
`[SceneFusion][${requestId}] Random-bg prompts: ${resolvedScenes
|
||
.map((scene) => `${scene.id}:${(scene.customPrompt || "").slice(0, 80) || "-"}`)
|
||
.join(" | ")}`
|
||
);
|
||
}
|
||
|
||
// 6. 创建流式响应，每完成一张图就立即发送给前端
|
||
const stream = new ReadableStream({
|
||
async start(controller) {
|
||
const encoder = new TextEncoder();
|
||
let streamClosed = false;
|
||
const safeClose = () => {
|
||
if (streamClosed) return;
|
||
streamClosed = true;
|
||
try {
|
||
controller.close();
|
||
} catch (closeError) {
|
||
console.warn("[SceneFusion] Stream close skipped:", closeError);
|
||
}
|
||
};
|
||
const enqueue = (payload: Record<string, unknown>) => {
|
||
if (streamClosed) return false;
|
||
try {
|
||
controller.enqueue(encoder.encode(`${JSON.stringify(payload)}\n`));
|
||
return true;
|
||
} catch (enqueueError) {
|
||
streamClosed = true;
|
||
console.warn("[SceneFusion] Stream enqueue skipped:", enqueueError);
|
||
return false;
|
||
}
|
||
};
|
||
|
||
try {
|
||
// 发送初始消息
|
||
if (!enqueue({ type: "start", total: processedScenes.length })) {
|
||
return;
|
||
}
|
||
enqueue({
|
||
type: "agent_meta",
|
||
data: {
|
||
productName: enriched.meta.productName || resolvedProductName || "",
|
||
productSource: enriched.meta.productSource || (resolvedProductName ? "agent" : "none"),
|
||
sceneTargets: enriched.meta.sceneTargets,
|
||
},
|
||
});
|
||
|
||
let successCount = 0;
|
||
let failCount = 0;
|
||
|
||
let nextSceneIndex = 0;
|
||
const workerCount = Math.max(
|
||
1,
|
||
Math.min(
|
||
SCENE_FUSION_PROCESS_MAX_WORKERS,
|
||
candidateModels.length,
|
||
processedScenes.length
|
||
)
|
||
);
|
||
|
||
const workers = Array.from({ length: workerCount }, async () => {
|
||
while (true) {
|
||
if (streamClosed) break;
|
||
const currentIndex = nextSceneIndex;
|
||
nextSceneIndex += 1;
|
||
if (currentIndex >= processedScenes.length) break;
|
||
|
||
const staggerDelay = (currentIndex % workerCount) * SCENE_FUSION_REQUEST_STAGGER_MS;
|
||
if (staggerDelay > 0) {
|
||
await waitSceneFusion(staggerDelay);
|
||
}
|
||
|
||
const scene = processedScenes[currentIndex];
|
||
if (!scene) break;
|
||
const resolvedScene = resolvedSceneMap.get(scene.id) || scene;
|
||
|
||
console.log(
|
||
`[SceneFusion] ========== Processing scene ${currentIndex + 1}/${processedScenes.length} ==========`
|
||
);
|
||
console.log(`[SceneFusion] Scene ID: ${scene.id}`);
|
||
console.log(
|
||
`[SceneFusion] Product Image URL: ${fusionProductImageUrl.substring(0, 80)}...`
|
||
);
|
||
console.log(
|
||
`[SceneFusion] Scene Image URL: ${scene.imageUrl.substring(0, 80)}...`
|
||
);
|
||
console.log(
|
||
`[SceneFusion] Target Name: ${resolvedScene.targetName || "(not specified)"}`
|
||
);
|
||
console.log(
|
||
`[SceneFusion] Custom Prompt: ${resolvedScene.customPrompt || "(none)"}`
|
||
);
|
||
|
||
try {
|
||
const { result, candidate, attempts } = await processSceneWithDiversity({
|
||
productImageUrl: fusionProductImageUrl,
|
||
sceneImageUrl: resolvedScene.imageUrl,
|
||
productName: resolvedProductName,
|
||
targetName: resolvedScene.targetName,
|
||
customPrompt: resolvedScene.customPrompt,
|
||
defaultPrompt: config.defaultPrompt,
|
||
sceneMode: resolvedSceneMode,
|
||
aspectRatio,
|
||
imageSize,
|
||
sceneIndex: currentIndex,
|
||
requestOffset,
|
||
requestId,
|
||
candidates: candidateModels,
|
||
imageHashCache,
|
||
});
|
||
|
||
const dbImageSize = imageSize || "2K";
|
||
|
||
await saveSceneFusionImageRecord({
|
||
userId: session.user.id,
|
||
thumbnailUrl: result.thumbnail,
|
||
originalUrl: result.original,
|
||
imageSize: dbImageSize,
|
||
prompt: `[场景裂变] ${result.prompt}`,
|
||
modelId: candidate.model.modelId,
|
||
sourceImageUrls: [fusionProductImageUrl, resolvedScene.imageUrl],
|
||
});
|
||
console.log(
|
||
`[SceneFusion] ✅ Saved image to gallery: ${result.original.substring(0, 80)}...`
|
||
);
|
||
|
||
successCount += 1;
|
||
if (!enqueue({
|
||
type: "result",
|
||
data: {
|
||
id: scene.id,
|
||
status: "completed" as const,
|
||
result: result.thumbnail,
|
||
originalUrl: result.original,
|
||
model: candidate.model.displayName,
|
||
modelId: candidate.model.modelId,
|
||
providerType: candidate.provider.type,
|
||
attempts,
|
||
recognizedProductName: resolvedProductName,
|
||
recognizedTargetName: resolvedScene.targetName,
|
||
},
|
||
})) {
|
||
break;
|
||
}
|
||
} catch (error) {
|
||
console.error(`[SceneFusion] Failed to process scene ${scene.id}:`, error);
|
||
failCount += 1;
|
||
if (!enqueue({
|
||
type: "result",
|
||
data: {
|
||
id: scene.id,
|
||
status: "failed" as const,
|
||
error: error instanceof Error ? error.message : "处理失败",
|
||
},
|
||
})) {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
});
|
||
|
||
await Promise.all(workers);
|
||
|
||
// 发送完成消息
|
||
console.log(`[SceneFusion] Completed: ${successCount} success, ${failCount} failed`);
|
||
enqueue({
|
||
type: "done",
|
||
summary: {
|
||
total: processedScenes.length,
|
||
success: successCount,
|
||
failed: failCount,
|
||
},
|
||
});
|
||
|
||
} catch (error) {
|
||
console.error("[SceneFusion] Stream error:", error);
|
||
// 发送错误消息
|
||
if (!streamClosed) {
|
||
enqueue({
|
||
type: "error",
|
||
error: error instanceof Error ? error.message : "处理失败",
|
||
});
|
||
}
|
||
} finally {
|
||
safeClose();
|
||
}
|
||
},
|
||
});
|
||
|
||
return new Response(stream, {
|
||
headers: {
|
||
"Content-Type": "text/event-stream",
|
||
"Cache-Control": "no-cache",
|
||
"Connection": "keep-alive",
|
||
},
|
||
});
|
||
} catch (error) {
|
||
console.error("[SceneFusion] Unexpected error:", error);
|
||
return NextResponse.json(
|
||
{ error: error instanceof Error ? error.message : "处理失败" },
|
||
{ status: 500 }
|
||
);
|
||
}
|
||
}
|