cda7cd4d7d
- 在 dynamic-provider.ts 中添加 alibaba-image 类型的专门处理 - 在 chat() 返回的对象中添加 provider 属性 - 确保 route.ts 能正确识别阿里生图模型并进入独立处理分支
442 lines
14 KiB
TypeScript
442 lines
14 KiB
TypeScript
/**
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* 阿里云千问图片生成/编辑 Provider
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*
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* 支持模型：
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* - qwen-image-edit-plus 系列：支持 1-6 张输出，自定义分辨率，提示词优化
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* - qwen-image-edit：仅支持 1 张输出
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*
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* API 文档：https://help.aliyun.com/zh/model-studio/developer-reference/qwen-vl-plus
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*/
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import sharp from "sharp";
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import { uploadFile } from "@/lib/storage/service";
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interface AlibabaImageConfig {
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apiKey: string;
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baseURL: string;
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}
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// 阿里生图请求参数
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export interface AlibabaImageParams {
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n?: number; // 输出图片数量，1-6（qwen-image-edit-plus）或 1（qwen-image-edit）
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size?: string; // 输出分辨率，如 "1024*1024"，宽高 512-2048
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negativePrompt?: string; // 反向提示词
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promptExtend?: boolean; // 是否开启提示词智能优化
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watermark?: boolean; // 是否添加水印
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seed?: number; // 随机种子
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}
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// 阿里生图 API 响应
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interface AlibabaImageResponse {
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output?: {
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choices?: Array<{
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finish_reason: string;
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message: {
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role: string;
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content: Array<{ image?: string }>;
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};
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}>;
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};
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usage?: {
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width: number;
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height: number;
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image_count: number;
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};
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request_id?: string;
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code?: string;
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message?: string;
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}
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/**
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* 创建缩略图
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*/
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async function createThumbnail(buffer: Buffer): Promise<Buffer> {
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try {
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const thumbnailBuffer = await sharp(buffer)
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.resize(400, 400, { fit: "inside", withoutEnlargement: true })
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.jpeg({ quality: 80 })
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.toBuffer();
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console.log(`[Alibaba Image] Thumbnail created, size: ${thumbnailBuffer.length} bytes`);
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return thumbnailBuffer;
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} catch (error) {
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console.error("[Alibaba Image] Failed to create thumbnail:", error);
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return buffer;
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}
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}
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/**
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* 生成唯一文件名
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*/
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function generateFilename(prefix: string, extension: string): string {
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const timestamp = Date.now();
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const random = Math.random().toString(36).substring(2, 8);
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return `${prefix}-${timestamp}-${random}.${extension}`;
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}
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/**
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* 下载图片并上传到 S3
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*/
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async function downloadAndUploadToS3(
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imageUrl: string,
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prefix: string = "alibaba-image"
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): Promise<{ thumbnail: string; original: string }> {
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try {
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console.log("[Alibaba Image] Downloading image from:", imageUrl.substring(0, 100) + "...");
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const response = await fetch(imageUrl);
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if (!response.ok) {
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throw new Error(`Failed to download image: ${response.status}`);
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}
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const buffer = Buffer.from(await response.arrayBuffer());
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console.log(`[Alibaba Image] Downloaded image, size: ${buffer.length} bytes`);
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// 创建缩略图
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const thumbnailBuffer = await createThumbnail(buffer);
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// 上传原图（Buffer 转 ArrayBuffer）
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const originalFilename = generateFilename(`${prefix}-orig`, "png");
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const originalResult = await uploadFile(originalFilename, buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength));
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console.log(`[Alibaba Image] Uploaded original to: ${originalResult.url}`);
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// 上传缩略图
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const thumbnailFilename = generateFilename(`${prefix}-thumb`, "jpg");
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const thumbnailArrayBuffer = new Uint8Array(thumbnailBuffer).buffer;
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const thumbnailResult = await uploadFile(thumbnailFilename, thumbnailArrayBuffer);
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console.log(`[Alibaba Image] Uploaded thumbnail to: ${thumbnailResult.url}`);
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return {
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original: originalResult.url,
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thumbnail: thumbnailResult.url,
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};
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} catch (error) {
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console.error("[Alibaba Image] Failed to download/upload image:", error);
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throw error;
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}
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}
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/**
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* 将 Base64 图片上传到 S3 获取 URL
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*/
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async function uploadBase64ToS3(base64Data: string): Promise<string> {
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try {
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// 移除 data URL 前缀
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const base64Clean = base64Data.replace(/^data:image\/\w+;base64,/, "");
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const buffer = Buffer.from(base64Clean, "base64");
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const filename = generateFilename("alibaba-ref", "png");
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const result = await uploadFile(filename, buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength));
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console.log(`[Alibaba Image] Uploaded reference image to: ${result.url}`);
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return result.url;
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} catch (error) {
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console.error("[Alibaba Image] Failed to upload reference image:", error);
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throw error;
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}
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}
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/**
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* 发送阿里生图 API 请求
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*/
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async function sendAlibabaImageRequest(
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baseURL: string,
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apiKey: string,
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modelId: string,
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prompt: string,
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imageUrls: string[],
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params: AlibabaImageParams
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): Promise<AlibabaImageResponse> {
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// 构建消息内容
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const content: Array<{ image?: string; text?: string }> = [];
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// 添加输入图片（最多 3 张）
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for (const url of imageUrls.slice(0, 3)) {
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content.push({ image: url });
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}
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// 添加编辑指令
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content.push({ text: prompt });
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const requestBody = {
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model: modelId,
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input: {
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messages: [
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{
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role: "user",
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content,
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},
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],
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},
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parameters: {
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n: params.n || 1,
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...(params.negativePrompt && { negative_prompt: params.negativePrompt }),
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...(params.size && { size: params.size }),
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prompt_extend: params.promptExtend ?? true,
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watermark: params.watermark ?? false,
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...(params.seed !== undefined && { seed: params.seed }),
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},
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};
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console.log("[Alibaba Image] Sending request to:", baseURL);
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console.log("[Alibaba Image] Model:", modelId);
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console.log("[Alibaba Image] Parameters:", JSON.stringify(requestBody.parameters));
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const response = await fetch(baseURL, {
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method: "POST",
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headers: {
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"Content-Type": "application/json",
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Authorization: `Bearer ${apiKey}`,
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},
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body: JSON.stringify(requestBody),
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});
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const data = await response.json();
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if (!response.ok || data.code) {
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console.error("[Alibaba Image] API Error:", data);
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throw new Error(data.message || `API request failed: ${response.status}`);
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}
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console.log("[Alibaba Image] Response received, request_id:", data.request_id);
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return data;
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}
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/**
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* 处理 API 响应，提取并上传图片
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*/
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async function processResponse(
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response: AlibabaImageResponse
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): Promise<Array<{ thumbnail: string; original: string }>> {
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const images: Array<{ thumbnail: string; original: string }> = [];
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const choices = response.output?.choices;
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if (!choices || choices.length === 0) {
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throw new Error("No images in response");
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}
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for (const choice of choices) {
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const content = choice.message?.content;
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if (!content) continue;
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for (const item of content) {
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if (item.image) {
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try {
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const uploaded = await downloadAndUploadToS3(item.image);
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images.push(uploaded);
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} catch (error) {
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console.error("[Alibaba Image] Failed to process image:", error);
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}
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}
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}
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}
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if (images.length === 0) {
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throw new Error("Failed to process any images");
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}
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console.log(`[Alibaba Image] Processed ${images.length} images`);
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return images;
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}
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/**
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* 格式化图片响应为 Markdown
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* 使用与其他生图模型一致的格式：thumb|||originalUrl|||size
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* 这样 saveGeneratedImages 函数可以正确解析并保存到数据库
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*/
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function formatImageResponse(
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images: Array<{ thumbnail: string; original: string }>,
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size?: string
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): string {
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if (images.length === 0) {
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return "图片生成失败，请重试。";
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}
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// 将分辨率转换为简短格式（如 "1024*1024" -> "1K"）
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const sizeLabel = size ? getSizeLabel(size) : "2K";
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return images
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.map((img) => {
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// 使用与 Gemini/火山引擎一致的格式：thumb|||originalUrl|||size
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const altText = `thumb|||${img.original}|||${sizeLabel}`;
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return ``;
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})
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.join("\n\n");
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}
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/**
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* 将分辨率字符串转换为简短标签
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*/
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function getSizeLabel(size: string): string {
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const sizeMap: Record<string, string> = {
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"1024*1024": "1K",
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"1280*1280": "1K",
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"1536*1536": "2K",
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"2048*2048": "4K",
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};
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return sizeMap[size] || "2K";
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}
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/**
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* 创建阿里云千问图片生成 Provider
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*/
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export function createAlibabaImage({ apiKey, baseURL }: AlibabaImageConfig) {
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return {
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provider: "alibaba-image",
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chat: (modelId: string) => ({
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provider: "alibaba-image", // 🆕 让 chat() 返回的对象也包含 provider 属性，用于 route.ts 中的类型判断
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doGenerate: async (options: {
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messages: Array<{ role: string; content: string | Array<{ type: string; text?: string; image?: string }> }>;
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imageParams?: AlibabaImageParams & { aspectRatio?: string; imageSize?: string; imageCount?: number };
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modelDisplayName?: string; // 🆕 模型显示名称，用于错误提示
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}) => {
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console.log("[Alibaba Image] doGenerate called");
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console.log("[Alibaba Image] Model:", modelId);
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console.log("[Alibaba Image] Image params:", options.imageParams);
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try {
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// 提取最后一条用户消息
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const lastUserMessage = options.messages.filter((m) => m.role === "user").pop();
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if (!lastUserMessage) {
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throw new Error("No user message found");
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}
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// 解析消息内容
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let prompt = "";
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const imageUrls: string[] = [];
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if (typeof lastUserMessage.content === "string") {
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prompt = lastUserMessage.content;
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} else if (Array.isArray(lastUserMessage.content)) {
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for (const part of lastUserMessage.content) {
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if (part.type === "text" && part.text) {
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prompt = part.text;
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}
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// 支持多种图片格式
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else if (part.type === "image" && part.image) {
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// 格式1: { type: "image", image: string }
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if (part.image.startsWith("data:")) {
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const url = await uploadBase64ToS3(part.image);
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imageUrls.push(url);
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} else {
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imageUrls.push(part.image);
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}
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} else if (part.type === "image_url" && (part as any).image_url?.url) {
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// 格式2: { type: "image_url", image_url: { url: string } }
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const imageUrl = (part as any).image_url.url;
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if (imageUrl.startsWith("data:")) {
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const url = await uploadBase64ToS3(imageUrl);
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imageUrls.push(url);
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} else {
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imageUrls.push(imageUrl);
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}
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} else if (part.type === "file" && (part as any).url) {
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// 格式3: { type: "file", url: string } - 来自 ChatMessage 的原始格式
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const fileUrl = (part as any).url;
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if (fileUrl.startsWith("data:")) {
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const url = await uploadBase64ToS3(fileUrl);
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imageUrls.push(url);
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} else {
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imageUrls.push(fileUrl);
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}
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}
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}
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}
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if (!prompt) {
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throw new Error("No prompt found in message");
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}
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// 验证：qwen-image-edit 系列模型必须有输入图片
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if (imageUrls.length === 0) {
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const modelName = options.modelDisplayName || modelId;
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throw new Error(`「${modelName}」是图片编辑模型，需要至少上传一张图片才能进行编辑。如需纯文生图，请使用其他生图模型。`);
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}
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// 构建参数
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const params: AlibabaImageParams = {
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n: options.imageParams?.imageCount || options.imageParams?.n || 1,
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negativePrompt: options.imageParams?.negativePrompt,
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promptExtend: options.imageParams?.promptExtend,
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watermark: options.imageParams?.watermark,
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seed: options.imageParams?.seed,
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};
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// 处理分辨率
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if (options.imageParams?.size) {
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params.size = options.imageParams.size;
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} else if (options.imageParams?.imageSize) {
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// 从 imageSize (如 "2K") 转换为具体分辨率
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const sizeMap: Record<string, string> = {
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"1K": "1024*1024",
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"2K": "1536*1536",
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"4K": "2048*2048",
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};
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params.size = sizeMap[options.imageParams.imageSize] || "1024*1024";
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}
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// 根据图片数量确定编辑模式
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const editMode = imageUrls.length === 1 ? "单图编辑" : `多图融合 (${imageUrls.length}张)`;
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console.log("[Alibaba Image] 编辑模式:", editMode);
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console.log("[Alibaba Image] Prompt:", prompt.substring(0, 100) + (prompt.length > 100 ? "..." : ""));
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console.log("[Alibaba Image] Input images:", imageUrls.length);
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console.log("[Alibaba Image] Final params:", params);
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// 发送请求
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const response = await sendAlibabaImageRequest(
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baseURL,
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apiKey,
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modelId,
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prompt,
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imageUrls,
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params
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);
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// 处理响应
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const images = await processResponse(response);
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const markdownText = formatImageResponse(images, params.size);
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console.log(`[Alibaba Image] Generated ${images.length} images successfully`);
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return {
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text: markdownText,
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finishReason: "stop" as const,
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usage: {
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promptTokens: 0,
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completionTokens: markdownText.length,
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},
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};
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} catch (error) {
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console.error("[Alibaba Image] Generation failed:", error);
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throw error;
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}
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},
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doStream: async function* (options: {
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messages: Array<{ role: string; content: string | Array<{ type: string; text?: string; image?: string }> }>;
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imageParams?: AlibabaImageParams & { aspectRatio?: string; imageSize?: string; imageCount?: number };
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modelDisplayName?: string;
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}) {
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console.log("[Alibaba Image] doStream called (using doGenerate internally)");
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// 阿里生图 API 不支持流式，直接调用 doGenerate
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const result = await this.doGenerate(options);
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// 模拟流式输出
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yield {
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type: "text-delta" as const,
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textDelta: result.text,
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};
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yield {
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type: "finish" as const,
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finishReason: "stop" as const,
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usage: result.usage,
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};
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},
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}),
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};
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}
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export default createAlibabaImage;
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