const { test } = require('node:test');
const assert = require('node:assert/strict');
const { spawn } = require('node:child_process');
const fs = require('node:fs');
const http = require('node:http');
const os = require('node:os');
const path = require('node:path');

const CLI = path.join(__dirname, '..', 'src', 'cli.js');

function run(args, env = {}) {
  return new Promise((resolve, reject) => {
    const childEnv = { ...process.env, ...env };
    childEnv.NODE_OPTIONS = [
      childEnv.NODE_OPTIONS,
      '--disable-warning=ExperimentalWarning',
    ].filter(Boolean).join(' ');
    const child = spawn(process.execPath, [CLI, ...args], {
      env: childEnv,
    });
    let stdout = '';
    let stderr = '';
    child.stdout.setEncoding('utf8');
    child.stderr.setEncoding('utf8');
    child.stdout.on('data', (chunk) => { stdout += chunk; });
    child.stderr.on('data', (chunk) => { stderr += chunk; });
    child.on('error', reject);
    child.on('close', (status) => resolve({ status, stdout, stderr }));
  });
}

async function startMigrationServer() {
  const requests = [];
  const server = http.createServer((req, res) => {
    let body = '';
    req.setEncoding('utf8');
    req.on('data', (chunk) => { body += chunk; });
    req.on('end', () => {
      const payload = JSON.parse(body);
      requests.push({ method: req.method, url: req.url, body: payload });
      res.writeHead(201, { 'Content-Type': 'application/json' });
      res.end(JSON.stringify({
        full_name: `destination/${payload.repo_name}`,
        html_url: `https://forge.test/destination/${payload.repo_name}`,
      }));
    });
  });
  await new Promise((resolve) => server.listen(0, '127.0.0.1', resolve));
  return { server, requests };
}

test('repo import-batch continues after one item has no source token', async () => {
  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'stoke-import-batch-'));
  const configFile = path.join(dir, 'config.json');
  const manifestFile = path.join(dir, 'manifest.json');
  const emptyPath = path.join(dir, 'bin');
  const forgeToken = 'forge-token-must-not-be-printed';
  const { server, requests } = await startMigrationServer();
  fs.mkdirSync(emptyPath);
  fs.writeFileSync(configFile, JSON.stringify({
    url: `http://127.0.0.1:${server.address().port}`,
    login: 'destination',
    token: forgeToken,
  }));
  fs.writeFileSync(manifestFile, JSON.stringify([
    { name: 'missing-token', from: 'https://github.com/source/first.git', service: 'github' },
    { name: 'imported-second', from: 'https://git.example/source/second.git', service: 'git' },
  ]));

  try {
    const result = await run(
      ['--config', configFile, 'repo', 'import-batch', '--file', manifestFile],
      { PATH: emptyPath, GITHUB_TOKEN: undefined },
    );

    assert.equal(result.status, 1);
    assert.match(result.stderr, /Failed to import missing-token: No GitHub token found\./);
    assert.equal(result.stdout,
      'Imported: destination/imported-second -> https://forge.test/destination/imported-second\n'
      + '\nBatch complete: 1/2 imported.\n');
    assert.deepEqual(requests, [{
      method: 'POST',
      url: '/api/v1/repos/migrate',
      body: {
        clone_addr: 'https://git.example/source/second.git',
        repo_name: 'imported-second',
        repo_owner: 'destination',
        service: 'git',
        private: false,
        issues: true,
        labels: true,
        milestones: true,
        pull_requests: true,
        releases: true,
        wiki: true,
        lfs: false,
      },
    }]);
    assert.doesNotMatch(result.stdout + result.stderr, new RegExp(forgeToken));
  } finally {
    await new Promise((resolve) => server.close(resolve));
    fs.rmSync(dir, { recursive: true, force: true });
  }
});

test('repo import-batch preserves successful batch output', async () => {
  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'stoke-import-batch-success-'));
  const configFile = path.join(dir, 'config.json');
  const manifestFile = path.join(dir, 'manifest.json');
  const { server, requests } = await startMigrationServer();
  fs.writeFileSync(configFile, JSON.stringify({
    url: `http://127.0.0.1:${server.address().port}`,
    login: 'destination',
    token: 'forge-token-must-not-be-printed',
  }));
  fs.writeFileSync(manifestFile, JSON.stringify([
    { name: 'first', from: 'https://git.example/source/first.git', service: 'git' },
    { name: 'second', from: 'https://git.example/source/second.git', service: 'git' },
  ]));

  try {
    const result = await run(['--config', configFile, 'repo', 'import-batch', '--file', manifestFile]);

    assert.equal(result.status, 0, result.stderr);
    assert.equal(result.stderr, '');
    assert.equal(result.stdout,
      'Imported: destination/first -> https://forge.test/destination/first\n'
      + 'Imported: destination/second -> https://forge.test/destination/second\n'
      + '\nBatch complete: 2/2 imported.\n');
    assert.deepEqual(requests.map(({ body }) => body.repo_name), ['first', 'second']);
  } finally {
    await new Promise((resolve) => server.close(resolve));
    fs.rmSync(dir, { recursive: true, force: true });
  }
});

test('repo import-batch sends an explicit GitHub token without printing it', async () => {
  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'stoke-import-batch-token-'));
  const configFile = path.join(dir, 'config.json');
  const manifestFile = path.join(dir, 'manifest.json');
  const emptyPath = path.join(dir, 'bin');
  const sourceToken = 'github-token-must-not-be-printed';
  const { server, requests } = await startMigrationServer();
  fs.mkdirSync(emptyPath);
  fs.writeFileSync(configFile, JSON.stringify({
    url: `http://127.0.0.1:${server.address().port}`,
    login: 'destination',
    token: 'forge-token-must-not-be-printed',
  }));
  fs.writeFileSync(manifestFile, JSON.stringify([{
    name: 'from-github',
    from: 'https://github.com/source/repository.git',
    service: 'github',
    github_token: sourceToken,
  }]));

  try {
    const result = await run(
      ['--config', configFile, 'repo', 'import-batch', '--file', manifestFile],
      { PATH: emptyPath, GITHUB_TOKEN: undefined },
    );

    assert.equal(result.status, 0, result.stderr);
    assert.equal(result.stderr, '');
    assert.equal(result.stdout,
      'Imported: destination/from-github -> https://forge.test/destination/from-github\n'
      + '\nBatch complete: 1/1 imported.\n');
    assert.deepEqual(requests, [{
      method: 'POST',
      url: '/api/v1/repos/migrate',
      body: {
        clone_addr: 'https://github.com/source/repository.git',
        repo_name: 'from-github',
        repo_owner: 'destination',
        service: 'github',
        private: false,
        issues: true,
        labels: true,
        milestones: true,
        pull_requests: true,
        releases: true,
        wiki: true,
        lfs: false,
        auth_token: sourceToken,
      },
    }]);
    assert.doesNotMatch(result.stdout + result.stderr, new RegExp(sourceToken));
  } finally {
    await new Promise((resolve) => server.close(resolve));
    fs.rmSync(dir, { recursive: true, force: true });
  }
});

test('repo import-batch keeps file and JSON errors at batch level', async () => {
  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'stoke-import-batch-invalid-'));
  const configFile = path.join(dir, 'config.json');
  const missingFile = path.join(dir, 'missing.json');
  const malformedFile = path.join(dir, 'malformed.json');
  fs.writeFileSync(configFile, JSON.stringify({
    url: 'https://forge.test',
    login: 'destination',
    token: 'forge-token-must-not-be-printed',
  }));
  fs.writeFileSync(malformedFile, '{not json');

  try {
    const missing = await run(['--config', configFile, 'repo', 'import-batch', '--file', missingFile]);
    const malformed = await run(['--config', configFile, 'repo', 'import-batch', '--file', malformedFile]);

    assert.equal(missing.status, 1);
    assert.match(missing.stderr, /^Batch import failed: ENOENT:/);
    assert.equal(missing.stdout, '');
    assert.equal(malformed.status, 1);
    assert.match(malformed.stderr, /^Batch import failed: /);
    assert.match(malformed.stderr, /JSON/);
    assert.equal(malformed.stdout, '');
  } finally {
    fs.rmSync(dir, { recursive: true, force: true });
  }
});

test('repo import-batch excludes skipped invalid entries from the summary', async () => {
  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'stoke-import-batch-skip-'));
  const configFile = path.join(dir, 'config.json');
  const manifestFile = path.join(dir, 'manifest.json');
  const { server, requests } = await startMigrationServer();
  fs.writeFileSync(configFile, JSON.stringify({
    url: `http://127.0.0.1:${server.address().port}`,
    login: 'destination',
    token: 'forge-token-must-not-be-printed',
  }));
  fs.writeFileSync(manifestFile, JSON.stringify([
    { name: 'missing-source' },
    { name: 'valid', from: 'https://git.example/source/valid.git', service: 'git' },
  ]));

  try {
    const result = await run(['--config', configFile, 'repo', 'import-batch', '--file', manifestFile]);

    assert.equal(result.status, 0, result.stderr);
    assert.equal(result.stderr, 'Skipping invalid manifest entry: {"name":"missing-source"}\n');
    assert.match(result.stdout, /Batch complete: 1\/1 imported\./);
    assert.deepEqual(requests.map(({ body }) => body.repo_name), ['valid']);
  } finally {
    await new Promise((resolve) => server.close(resolve));
    fs.rmSync(dir, { recursive: true, force: true });
  }
});