Method fetchImageUrls

cosplay/cosplay.ts:95–136

(count: number)

  }

  async fetchImageUrls(count: number): Promise<ImageResult> {
    const maxAttempts = CONFIG.MAX_RETRIES * 2;
    let lastError: Error | null = null;

    for (let attempt = 0; attempt < maxAttempts; attempt++) {
      try {
        const photoSet = await this.getRandomPhotoSet();
        const html = await withRetry(() =>
          this.client.get(photoSet.url).then((r) => r.data)
        );
        const images = this.extractGalleryImages(html);

        if (images.length === 0) {
          console.warn(`套图 ${photoSet.title} 未找到图片，重试`);
          continue;
        }

        if (images.length < count) {
          console.warn(
            `套图 ${photoSet.title} 只有${images.length}张，需要${count}张，重试`
          );
          continue;
        }

        const selected = this.pickRandom(images, count);
        return { imageUrls: selected, photoSet };
      } catch (error) {
        lastError = error as Error;
        const errorMessage = error instanceof Error ? error.message : "";
        if (
          attempt < maxAttempts - 1 &&
          !errorMessage.includes("只有") &&
          !errorMessage.includes("未找到")
        ) {
          await new Promise((r) => setTimeout(r, Math.min((attempt + 1) * 1000, 3000)));
        }
      }
    }
    throw new Error(
      `获取图片失败，已尝试${maxAttempts}次: ${lastError?.message || "未知错误"}`
    );
  }

  async downloadImages(imageUrls: string[]): Promise<string[]> {
    const tasks = imageUrls.map((url) =>