Method installMod

daemon/src/service/mod_service.ts:380–416

(
    instanceUuid: string,
    url: string,
    fileName: string,
    type: "mod" | "plugin",
    options: { fallbackUrl?: string } = {}
  )

  }

  public async installMod(
    instanceUuid: string,
    url: string,
    fileName: string,
    type: "mod" | "plugin",
    options: { fallbackUrl?: string } = {}
  ) {
    const instance = InstanceSubsystem.getInstance(instanceUuid)!;
    const cwd = instance.absoluteCwdPath();
    const fileManager = new FileManager(
      resolveMCDRServerRoot(instance.config.type, cwd) ?? cwd,
      instance.config?.fileCode
    );
    const rootDir = fileManager.toAbsolutePath(".");

    // Determine the save directory based on what exists (case-sensitive check for Linux)
    let saveDir = type === "plugin" ? "plugins" : "mods";
    const variants = type === "plugin" ? ["plugins", "Plugins"] : ["mods", "Mods"];

    for (const v of variants) {
      if (await fs.pathExists(path.join(rootDir, v))) {
        saveDir = v;
        break;
      }
    }

    const relativePath = path.join(saveDir, fileName);
    if (!fileManager.checkPath(relativePath)) throw new Error("Invalid file path");
    const targetPath = fileManager.toAbsolutePath(relativePath);

    logger.info(
      `[ModService] Instance ${instanceUuid} Install Mod: ${fileName} from ${url} to ${targetPath}`
    );
    logger.info(`[ModService] Options: ${JSON.stringify(options)}`);

    await downloadManager.downloadFromUrl(url, targetPath, options.fallbackUrl);
  }

  public async getModConfig(
    instanceUuid: string,