Function convertImageToStickerWebp

speedtest/speedtest.ts:1012–1053

(
  srcPath: string
)

}

async function convertImageToStickerWebp(
  srcPath: string
): Promise<string | null> {
  try {
    if (!fs.existsSync(srcPath)) return null;
    const stickerPath = path.join(
      TEMP_DIR,
      `speedtest_sticker_${Date.now()}_${Math.random()
        .toString(36)
        .slice(2, 8)}.webp`
    );

    // Resize to 512x512 and convert to webp for sticker
    await sharp(srcPath)
      .resize(512, 512, {
        fit: "contain",
        background: { r: 0, g: 0, b: 0, alpha: 0 },
      })
      .webp({ quality: 85, effort: 5 })
      .toFile(stickerPath);

    // Basic size check for Telegram sticker (~512KB)
    try {
      const { size } = fs.statSync(stickerPath);
      if (size > 512 * 1024) {
        // Try recompress at lower quality
        await sharp(srcPath)
          .resize(512, 512, {
            fit: "contain",
            background: { r: 0, g: 0, b: 0, alpha: 0 },
          })
          .webp({ quality: 65, effort: 6 })
          .toFile(stickerPath);
      }
    } catch { }

    return stickerPath;
  } catch (e) {
    console.error("Failed to convert image to sticker:", e);
    return null;
  }
}

const speedtest = async (msg: Api.Message) => {
  const rawArgs = msg.message.slice(1).split(" ").slice(1);