import spawn from 'cross-spawn';
import rp from 'request-promise';
import { getURL } from './url';

let gitAccount: any;
let serverUrl: string;

export function setServerUrl(url: string) {
  serverUrl = url;
}

function getHostname(url: string): string {
  if (/https?/.test(url)) {
    const match: any = url.match(/^http(s)?:\/\/(.*?)\//);
    return match[2].split('@').pop();
  } else {
    const match: any = url.match(/@(.*):/);
    return match[1];
  }
}

async function prepareAccount() {
  if (gitAccount) {
    return;
  }
  const url = getURL(serverUrl, 'apply/getlist?name=0');
  if (!url) {
    return;
  }
  const options = {
    url: url,
    method: 'GET'
  };
  return rp(options)
    .then((response: any) => {
      const data = JSON.parse(response);
      if (data.account) {
        gitAccount = data.account;
      }
    })
    .catch((err: any) => {});
}

export async function transformUrl(url: string, account?: any): Promise<any> {
  if (account) {
    gitAccount = account;
  } else {
    await prepareAccount();
  }
  const hostname = getHostname(url);
  let transformedUrl;
  if (/https?/.test(url)) {
    transformedUrl = url;
  } else {
    transformedUrl = url.replace(`git@${hostname}:`, `http://${hostname}/`);
  }
  if (gitAccount) {
    const { username, password } = gitAccount;
    return transformedUrl.replace(
      /https?:\/\/(.*?(:.*?)?@)?/,
      `http://${username}:${password}@`
    );
  }
  return transformedUrl;
}

export async function clearGitCert(url: string) {
  const { username } = gitAccount;
  if (!username) {
    return;
  }
  if (!/https?:\/\/(.*?(:.*?)?@)/.test(url)) {
    url = await transformUrl(url);
  }
  return new Promise(resolve => {
    const child = spawn('git', ['credential', 'reject'], {
      windowsHide: true,
      timeout: 60 * 1000 * 1
    });
    child.stdin?.write(`url=${url}`);
    child.stdin?.end();
    child.on('close', code => {
      resolve(code);
    });
  });
}

export async function clearGitCertByPath(repoPath: string) {
  const ret = spawn.sync('git', ['config', '--get', 'remote.origin.url'], {
    windowsHide: true,
    cwd: repoPath
  });
  const url = ret?.stdout?.toString().trim();
  return clearGitCert(url);
}

export async function download(
  url: string,
  tag: string,
  filepath: string
): Promise<any> {
  const cloneUrl = await transformUrl(url);

  console.log('clone from', url);
  return new Promise((resolve, reject) => {
    const child = spawn(
      'git',
      ['clone', '-b', tag, '--progress', '--depth', '1', cloneUrl, filepath],
      {
        stdio: 'pipe',
        windowsHide: true
      }
    );
    let doneFlag = false;
    child.stderr?.on('data', d => {
      if (doneFlag) {
        return;
      }
      if (
        d?.toString()?.startsWith('Note:') ||
        d?.toString()?.startsWith('注意')
      ) {
        doneFlag = true;
        return;
      }
      process.stderr.write(d);
    });
    child.stdout?.on('data', d => {
      if (doneFlag) {
        return;
      }
      process.stdout.write(d);
    });
    child.on('close', code => {
      if (code === 0) {
        resolve(0);
      } else {
        reject(code);
      }
    });
    child.on('error', err => {
      reject(err);
    });
  }).finally(() => clearGitCert(cloneUrl));
}