import { videoUpscaleSchema } from "@/lib/video-canvas/video-upscale-contract";
import { smartEditRequestSchema } from "@/lib/video-canvas/smart-edit/contract";
import { audioRequestSchema } from "@/lib/video-canvas/audio-contract";
import { canResumeCanvasTask } from "@/lib/video-canvas/task-recovery";
import { imageOperationSchema } from "@/lib/video-canvas/image-operation";
import { after, NextResponse } from "next/server";
import { auth } from "@/app/(auth)/auth";
import { z } from "zod";
import { canvasTaskRequestSchema } from "@/lib/video-canvas/task-contract";
import {
  cancelCanvasGenerationTask,
  createCanvasGenerationTask,
  listCanvasGenerationTasks,
  ownsTaskProject,
} from "@/lib/video-canvas/task-store";
import { runCanvasGenerationQueue } from "@/lib/video-canvas/task-worker";
import { preflightCanvasProductionRequests } from "@/lib/video-canvas/production-services";
export const runtime = "nodejs";
export const maxDuration = 900;

async function owner(projectId: unknown) {
  const session = await auth();
  if (!session?.user?.id) throw Object.assign(Error("未登录"), { status: 401 });
  if (!z.string().uuid().safeParse(projectId).success)
    throw Object.assign(Error("画布 ID 无效"), { status: 400 });
  if (!(await ownsTaskProject(session.user.id, projectId as string)))
    throw Object.assign(Error("画布不存在"), { status: 404 });
  return session.user.id;
}
const fail = (error: unknown) =>
  NextResponse.json(
    { success: false, error: error instanceof Error ? error.message : "任务操作失败", code: (error as any)?.code },
    { status: Number((error as any)?.status) || (error instanceof SyntaxError ? 400 : 500) },
  );
const kick = (userId: string, projectId: string) =>
  after(() =>
    runCanvasGenerationQueue(userId, projectId).catch((error) =>
      console.error("[Canvas tasks]", error),
    ),
  );
export async function POST(request: Request) {
  try {
    const text = await request.text();
    if (new TextEncoder().encode(text).byteLength > 262144)
      throw Object.assign(Error("任务数据过大，请使用已上传的素材链接"), { status: 413 });
    const parsed = canvasTaskRequestSchema.safeParse(JSON.parse(text));
    if (!parsed.success) throw Object.assign(Error("任务参数不合法"), { status: 400 });
    if(parsed.data.workflow)throw Object.assign(Error("编组任务必须使用整组提交接口"),{status:400});
    if (
      parsed.data.kind === "image-operation" &&
      !imageOperationSchema.safeParse(parsed.data.params).success
    )
      throw Object.assign(Error("图片处理参数不合法"), { status: 400 });
    if (
      parsed.data.attachment &&
      ((parsed.data.attachment.type === "story-asset" && parsed.data.kind !== "image") ||
        (parsed.data.attachment.type === "story-prompts" && parsed.data.kind !== "analysis"))
    )
      throw Object.assign(Error("脚本结果类型不匹配"), { status: 400 });
    if (parsed.data.kind === "audio" && !audioRequestSchema.safeParse(parsed.data.params).success)
      throw Object.assign(Error("音频参数不合法"), { status: 400 });
    if (
      parsed.data.kind === "smart-edit" &&
      !smartEditRequestSchema.safeParse(parsed.data.params).success
    )
      throw Object.assign(Error("剪辑参数无效"), { status: 400 });
    if (parsed.data.kind === "video-upscale" && !videoUpscaleSchema.safeParse(parsed.data.params).success) throw Object.assign(Error("视频高清参数无效"), {status:400});
    const userId = await owner(parsed.data.projectId);
    const task = await createCanvasGenerationTask(userId, parsed.data,
      () => preflightCanvasProductionRequests([parsed.data]));
    kick(userId, parsed.data.projectId);
    return NextResponse.json({ success: true, task }, { status: 202 });
  } catch (error) {
    return fail(error);
  }
}
export async function GET(request: Request) {
  try {
    const projectId = new URL(request.url).searchParams.get("projectId") || "";
    const userId = await owner(projectId);
    const tasks = await listCanvasGenerationTasks(userId, projectId);
    if (tasks.some((task) => task.status === "pending" || canResumeCanvasTask(task)))
      kick(userId, projectId);
    return NextResponse.json(
      { success: true, tasks },
      { headers: { "Cache-Control": "no-store" } },
    );
  } catch (error) {
    return fail(error);
  }
}
export async function DELETE(request: Request) {
  try {
    const { projectId, taskId } = await request.json();
    const userId = await owner(projectId);
    if (!z.string().uuid().safeParse(taskId).success)
      throw Object.assign(Error("任务 ID 无效"), { status: 400 });
    const result = await cancelCanvasGenerationTask(userId, projectId, taskId);
    if (!result.task)
      return NextResponse.json({ success: false, error: "任务不存在" }, { status: 404 });
    if (!result.ok)
      return NextResponse.json(
        {
          success: false,
          error:
            result.task.status === "running"
              ? "任务已提交供应商，当前线路不支持中止。结果会继续保存，请勿重复生成。"
              : "任务已结束或状态待核实，请先刷新任务状态。",
          task: result.task,
        },
        { status: 409 },
      );
    return NextResponse.json({ success: true, task: result.task });
  } catch (error) {
    return fail(error);
  }
}
export async function PATCH(request: Request) {
  try {
    const { projectId, taskId, nodeId } = await request.json();
    const userId = await owner(projectId);
    if (!z.string().uuid().safeParse(taskId).success || typeof nodeId !== "string")
      return NextResponse.json({ success: false }, { status: 400 });
    const { hideCanvasGenerationNode } = await import("@/lib/video-canvas/task-store");
    const success = await hideCanvasGenerationNode(userId, projectId, taskId, nodeId);
    return NextResponse.json({ success }, { status: success ? 200 : 404 });
  } catch (error) {
    return fail(error);
  }
}