Class ConvertPlugin

convert/convert.ts:291–440

   `);

class ConvertPlugin extends Plugin {
  cleanup(): void {
    GeminiConfigManager.cleanup();
  }

  description: string = help_text;
  
  cmdHandlers: Record<string, (msg: Api.Message) => Promise<void>> = {
    convert: async (msg: Api.Message) => {
        const parts = msg.text?.trim()?.split(/\s+/) || [];
        const args = parts.slice(1);
        const subCommand = (args[0] || "").toLowerCase();

        try {
            if (subCommand === "help" || subCommand === "h" || args.length === 0 && !msg.replyTo) {
                await msg.edit({ text: help_text, parseMode: "html" });
            } else if (subCommand === "clear") {
                await this.handleClearCommand(msg);
            } else if (subCommand === "apikey") {
                await this.handleApiKeyCommand(msg, args.slice(1).join(" "));
            } else {
                await this.handleVideoConversion(msg, args);
            }
        } catch (error: any) {
            console.error("[convert] Plugin execution failed:", error);
            await msg.edit({
                text: `❌ <b>插件执行失败:</b> ${htmlEscape(error.message)}`,
                parseMode: "html"
            });
        }
    }
  };

  private async handleVideoConversion(msg: Api.Message, args: string[]): Promise<void> {
    const client = await getGlobalClient();
    const reply = await safeGetReplyMessage(msg);

    if (!client || !reply || (!reply.document && !reply.video)) {
      await msg.edit({ text: `❌ <b>使用错误</b>\n\n请回复一个视频消息后再使用此命令。\n\n请回复一个视频消息后再试。`, parseMode: "html" });
      return;
    }
    
    const doc = reply.video || reply.document;
    const fileNameAttr = doc?.attributes?.find((a: any) => a.fileName) as Api.DocumentAttributeFilename | undefined;
    const originalFileName = fileNameAttr?.fileName || "video.mp4";

    await msg.edit({ text: "📥 正在下载视频...", parseMode: "html" });
    
    const timestamp = Date.now();
    const tempVideoPath = path.join(converter.tempDir, `${timestamp}_video`);
    const tempAudioPath = path.join(converter.tempDir, `${timestamp}.mp3`);
    let finalAudioPath = tempAudioPath;
    let tempCoverPath: string | undefined;

    try {
        await client.downloadMedia(reply, { outputFile: tempVideoPath });
        if (!fs.existsSync(tempVideoPath)) throw new Error("视频下载失败");