import {spawn} from 'node:child_process';
import {existsSync, readFileSync} from 'node:fs';
import {resolve} from 'node:path';

const repoRoot = process.cwd();

function loadEnvFile(path, target) {
  if (!existsSync(path)) {
    return;
  }

  const rawText = readFileSync(path, 'utf8');
  for (const rawLine of rawText.split(/\r?\n/u)) {
    const line = rawLine.trim();
    if (!line || line.startsWith('#')) {
      continue;
    }

    const match = line.match(/^([A-Za-z_][A-Za-z0-9_]*)=(.*)$/u);
    if (!match) {
      continue;
    }

    const [, key, rawValue] = match;
    if (target[key] !== undefined) {
      continue;
    }

    target[key] = rawValue.replace(/^['"]|['"]$/gu, '');
  }
}

const mergedEnv = {...process.env};
loadEnvFile(resolve(repoRoot, '.env'), mergedEnv);
loadEnvFile(resolve(repoRoot, '.env.local'), mergedEnv);

mergedEnv.GENARRATIVE_API_HOST = mergedEnv.GENARRATIVE_API_HOST || '127.0.0.1';
mergedEnv.GENARRATIVE_API_PORT = mergedEnv.GENARRATIVE_API_PORT || '3100';
mergedEnv.GENARRATIVE_SPACETIME_SERVER_URL =
  mergedEnv.GENARRATIVE_SPACETIME_MAINCLOUD_SERVER_URL ||
  mergedEnv.GENARRATIVE_SPACETIME_SERVER_URL ||
  'https://maincloud.spacetimedb.com';
mergedEnv.GENARRATIVE_SPACETIME_DATABASE =
  mergedEnv.GENARRATIVE_SPACETIME_MAINCLOUD_DATABASE ||
  mergedEnv.GENARRATIVE_SPACETIME_DATABASE ||
  '';
mergedEnv.GENARRATIVE_SPACETIME_TOKEN =
  mergedEnv.GENARRATIVE_SPACETIME_MAINCLOUD_TOKEN ||
  mergedEnv.GENARRATIVE_SPACETIME_TOKEN ||
  '';

if (!mergedEnv.GENARRATIVE_SPACETIME_DATABASE) {
  console.error(
    '[api-server:maincloud] 缺少 GENARRATIVE_SPACETIME_MAINCLOUD_DATABASE 或 GENARRATIVE_SPACETIME_DATABASE。',
  );
  process.exit(1);
}

console.log(
  `[api-server:maincloud] SpacetimeDB ${mergedEnv.GENARRATIVE_SPACETIME_DATABASE} @ ${mergedEnv.GENARRATIVE_SPACETIME_SERVER_URL}`,
);

const child = spawn(
  'cargo',
  ['run', '-p', 'api-server', '--manifest-path', 'server-rs/Cargo.toml'],
  {
    cwd: repoRoot,
    env: mergedEnv,
    stdio: 'inherit',
    shell: process.platform === 'win32',
  },
);

child.on('error', (error) => {
  console.error(`[api-server:maincloud] 启动 cargo 失败: ${error.message}`);
  process.exit(1);
});

child.on('exit', (code, signal) => {
  if (signal) {
    console.error(`[api-server:maincloud] api-server 被信号终止: ${signal}`);
    process.exit(1);
  }

  process.exit(code ?? 0);
});