import {
  analyzeProductImages,
  buildProductSummary,
  extractSellingPoints,
  generateCreativeOptions,
  generateStoryboard,
  generateVideoPrompts,
  checkCompliance,
  type AdVideoUserConfig,
} from "../../api/adVideoPlanClient";
import { aiGenerationClient } from "../../api/aiGenerationClient";
import { waitForTask } from "../../api/taskSubscription";
import { resolveVideoRequestModel } from "../../utils/resolveVideoModel";
import type {
  EcommerceVideoPlanResult,
  EcommerceVideoSceneTask,
  PlanStep,
} from "./ecommerceVideoTypes";

export interface PlanCallbacks {
  onStepStart: (step: PlanStep) => void;
  onStepDone: (step: PlanStep) => void;
  signal?: AbortSignal;
}

export async function runVideoPlan(
  imageDataUrls: string[],
  manualText: string,
  config: AdVideoUserConfig,
  callbacks: PlanCallbacks,
): Promise<EcommerceVideoPlanResult> {
  const { onStepStart, onStepDone, signal } = callbacks;

  onStepStart("upload");
  const imageUrls: string[] = [];
  const SUPPORTED_IMAGE_TYPES = new Set(["image/jpeg", "image/png", "image/webp", "image/gif"]);
  for (const srcUrl of imageDataUrls) {
    try {
      const resp = await fetch(srcUrl);
      const rawBlob = await resp.blob();
      const mimeType = SUPPORTED_IMAGE_TYPES.has(rawBlob.type) ? rawBlob.type : "image/png";
      const blob = rawBlob.type === mimeType ? rawBlob : new Blob([rawBlob], { type: mimeType });
      const result = await aiGenerationClient.uploadAssetBinary(blob, { mimeType, scope: "ecommerce-product" });
      imageUrls.push(result.url);
    } catch {
      // skip images that fail to upload
    }
  }
  onStepDone("upload");

  onStepStart("analyze");
  const imageDesc = await analyzeProductImages(imageUrls, signal);
  onStepDone("analyze");

  onStepStart("summary");
  const summary = await buildProductSummary(imageDesc, manualText, signal);
  onStepDone("summary");

  onStepStart("selling");
  const selling = await extractSellingPoints(summary, signal);
  onStepDone("selling");

  onStepStart("creative");
  const creatives = await generateCreativeOptions(selling, config, signal);
  if (!creatives.length) throw new Error("未能生成有效的广告创意");
  onStepDone("creative");

  onStepStart("storyboard");
  const storyboard = await generateStoryboard(creatives[0], summary, config, signal);
  onStepDone("storyboard");

  onStepStart("prompts");
  const videoPrompts = await generateVideoPrompts(storyboard, summary, signal);
  onStepDone("prompts");

  onStepStart("compliance");
  const compliance = await checkCompliance(summary, selling, storyboard, signal);
  onStepDone("compliance");

  return { summary, selling, creatives, storyboard, videoPrompts, compliance };
}

export interface RenderSceneInput {
  sceneId: number;
  prompt: string;
  durationSeconds: number;
  imageUrl: string;
  aspectRatio: string;
  resolution: string;
  model?: string;
}

export interface RenderCallbacks {
  onSceneSubmitted: (sceneId: number, taskId: string) => void;
  onSceneProgress: (sceneId: number, progress: number) => void;
  onSceneCompleted: (sceneId: number, resultUrl: string) => void;
  onSceneFailed: (sceneId: number, error: string) => void;
}

export async function renderScene(
  input: RenderSceneInput,
  callbacks: RenderCallbacks,
  abortRef: { current: boolean },
): Promise<void> {
  const model = resolveVideoRequestModel({
    model: input.model || "happyhorse-1.0",
    referenceUrls: [input.imageUrl],
  });

  const { taskId } = await aiGenerationClient.createVideoTask({
    model,
    prompt: input.prompt,
    ratio: input.aspectRatio,
    duration: input.durationSeconds,
    quality: input.resolution,
    resolution: input.resolution,
    imageUrl: input.imageUrl,
    referenceUrls: [input.imageUrl],
    hasReferenceVideo: false,
  });

  callbacks.onSceneSubmitted(input.sceneId, taskId);

  const resultUrl = await waitForTask(taskId, {
    abortRef,
    onProgress: (e) => callbacks.onSceneProgress(input.sceneId, e.progress),
  });

  if (resultUrl) {
    callbacks.onSceneCompleted(input.sceneId, resultUrl);
  } else {
    callbacks.onSceneFailed(input.sceneId, "任务未返回结果");
  }
}

export function buildSceneTasks(
  plan: EcommerceVideoPlanResult,
): EcommerceVideoSceneTask[] {
  return plan.storyboard.scenes.map((scene) => {
    const prompt = plan.videoPrompts.find((p) => p.scene_id === scene.scene_id);
    return {
      sceneId: scene.scene_id,
      prompt: prompt?.positive_prompt || scene.visual_description,
      durationSeconds: Number.parseInt(scene.duration, 10) || 5,
      status: "idle",
      progress: 0,
    };
  });
}