#!/usr/bin/env node
import path from "node:path";
import { loadConfig } from "./config.js";
import { printCumulativeUsage } from "./renderer.js";
import { createServer } from "./server.js";

function configPathFromArgs(args: string[]): string {
  const index = args.indexOf("--config");
  if (index === -1) return "config.yaml";
  const value = args[index + 1];
  if (!value) throw new Error("--config requires a file path");
  return value;
}

async function main(): Promise<void> {
  const configPath = path.resolve(configPathFromArgs(process.argv.slice(2)));
  const config = await loadConfig(configPath);
  const bridge = await createServer(config);

  if (!bridge.installation.installed) {
    process.stderr.write(`警告：找不到 ${config.command_code_executable}，API 将返回 503。\n`);
  } else if (!bridge.installation.authenticated) {
    process.stderr.write("警告：Command Code 未登录。运行 command-code login 后重启服务。\n");
  }

  await bridge.app.listen({ host: config.host, port: config.port });
  process.once("exit", printCumulativeUsage);
  process.stdout.write(`Command Code OpenAI Bridge 已启动\n`);
  process.stdout.write(`API: http://${config.host}:${config.port}/v1\n`);
  process.stdout.write(`工作目录: ${config.resolvedWorkingDirectory}\n`);
  process.stdout.write(`Command Code: ${bridge.installation.version ?? "unavailable"}\n`);
  process.stdout.write(`权限模式: ${config.dangerously_skip_permissions ? "yolo" : config.permission_mode}\n`);
  process.stdout.write("空闲时按 Ctrl+C 停止；请求运行中第一次 Ctrl+C 只取消当前请求。\n");

  let shuttingDown = false;
  const shutdown = async (signal: NodeJS.Signals) => {
    if (bridge.abortActive()) {
      process.stderr.write(`\n收到 ${signal}，正在取消当前 Command Code 请求。\n`);
      return;
    }
    if (shuttingDown) return;
    shuttingDown = true;
    process.stdout.write(`\n收到 ${signal}，正在停止服务。\n`);
    await bridge.app.close();
    process.exitCode = 0;
  };

  process.on("SIGINT", () => { void shutdown("SIGINT"); });
  process.on("SIGTERM", () => { void shutdown("SIGTERM"); });
}

main().catch((error) => {
  process.stderr.write(`${error instanceof Error ? error.stack : String(error)}\n`);
  process.exitCode = 1;
});