import assert from 'node:assert/strict';
import { test } from 'node:test';

import {
  assertRequestedVersionNotBelowChannel,
  buildOssutilArgs,
  issueGlobalVersion,
  maxVersion,
  nextVersion,
  previewNextGlobalVersion,
  resolveSeedBaseline,
} from './agc-global-version.mjs';

function jsonResponse(payload, status = 200) {
  return {
    ok: status >= 200 && status < 300,
    status,
    json: async () => payload,
  };
}

/** 以 URL 为键的假 OSS：只读 fetch + 记录写入。 */
function createFakeOss({ objects = {} } = {}) {
  const state = { ...objects };
  const writes = [];
  return {
    state,
    writes,
    fetchImpl: async (url) => {
      const key = String(url).replace(/^https?:\/\/[^/]+\//u, '');
      if (!(key in state)) return jsonResponse(null, 404);
      return jsonResponse(state[key]);
    },
    writeImpl: (payload, options = {}) => {
      writes.push({ payload, dryRun: Boolean(options.dryRun) });
      if (!options.dryRun) state['agc/global-version.json'] = payload;
      return { written: !options.dryRun, payload };
    },
  };
}

test('播种基线取仓库版本、各渠道清单与旧迁移指针的最大值', async () => {
  const oss = createFakeOss({
    objects: {
      'agc/dev-win/latest.json': { version: '0.1.57' },
      'agc/dev-mac/latest.json': { version: '0.1.12' },
      'agc/latest.json': { version: '0.1.60' },
    },
  });
  assert.equal(
    await resolveSeedBaseline({
      repoVersion: '0.1.48',
      env: {},
      fetchImpl: oss.fetchImpl,
    }),
    '0.1.60',
  );
  assert.equal(maxVersion('0.1.9', '0.1.10', null), '0.1.10');
});

test('无总号时按播种基线发首号，并把总号写回唯一事实源', async () => {
  const oss = createFakeOss({
    objects: {
      'agc/dev-win/latest.json': { version: '0.1.57' },
      'agc/dev-mac/latest.json': { version: '0.1.12' },
    },
  });
  const issued = await issueGlobalVersion({
    channel: 'dev-win',
    commit: 'a'.repeat(40),
    buildId: '319',
    repoVersion: '0.1.48',
    env: {},
    fetchImpl: oss.fetchImpl,
    writeImpl: oss.writeImpl,
    now: () => '2026-09-20T00:00:00.000Z',
  });
  assert.equal(issued, '0.1.58');
  assert.deepEqual(
    oss.writes.map((entry) => entry.payload.version),
    ['0.1.58'],
  );
  assert.equal(oss.state['agc/global-version.json'].version, '0.1.58');
  assert.equal(oss.state['agc/global-version.json'].channel, 'dev-win');
  assert.equal(oss.state['agc/global-version.json'].buildId, '319');
});

test('已有总号时只递增，不再回看渠道清单', async () => {
  const oss = createFakeOss({
    objects: {
      'agc/global-version.json': { version: '0.2.7' },
      // 渠道清单被手工改小也不能把总号拉回去。
      'agc/dev-win/latest.json': { version: '0.1.10' },
    },
  });
  const issued = await issueGlobalVersion({
    channel: 'dev-mac',
    env: {},
    fetchImpl: oss.fetchImpl,
    writeImpl: oss.writeImpl,
  });
  assert.equal(issued, '0.2.8');
  assert.equal(oss.state['agc/global-version.json'].version, '0.2.8');
});

test('dry-run 只预览下一位，不写回、不烧号', async () => {
  const oss = createFakeOss({
    objects: { 'agc/global-version.json': { version: '0.3.4' } },
  });
  const preview = await previewNextGlobalVersion({
    env: {},
    fetchImpl: oss.fetchImpl,
  });
  assert.equal(preview, '0.3.5');
  assert.equal(oss.writes.length, 0);

  const issued = await issueGlobalVersion({
    channel: 'dev-win',
    env: { AGC_RELEASE_DRY_RUN: '1' },
    fetchImpl: oss.fetchImpl,
    writeImpl: oss.writeImpl,
  });
  assert.equal(issued, '0.3.5');
  assert.deepEqual(
    oss.writes.map((entry) => entry.dryRun),
    [true],
  );
  assert.equal(oss.state['agc/global-version.json'].version, '0.3.4');
});

test('传入低于本渠道清单的号时失败关闭', () => {
  assert.equal(
    assertRequestedVersionNotBelowChannel({
      requested: '0.1.60',
      channelVersion: '0.1.60',
      channel: 'dev-win',
    }),
    '0.1.60',
  );
  assert.throws(
    () =>
      assertRequestedVersionNotBelowChannel({
        requested: '0.1.59',
        channelVersion: '0.1.60',
        channel: 'dev-win',
      }),
    /低于 dev-win 渠道当前清单版本/u,
  );
  assert.equal(
    assertRequestedVersionNotBelowChannel({
      requested: '0.1.1',
      channelVersion: null,
      channel: 'dev-mac',
    }),
    '0.1.1',
  );
});

test('写后回读不一致（并发发号）时失败关闭', async () => {
  const oss = createFakeOss({
    objects: { 'agc/global-version.json': { version: '0.5.1' } },
  });
  await assert.rejects(
    issueGlobalVersion({
      channel: 'dev-win',
      env: {},
      // 模拟另一个发号进程在写入后覆盖了总号。
      writeImpl: (payload, options) => {
        const result = oss.writeImpl(payload, options);
        // 另一个发号进程紧随其后覆盖总号。
        oss.state['agc/global-version.json'] = { version: '0.5.9' };
        return result;
      },
      fetchImpl: oss.fetchImpl,
    }),
    /写后回读不一致/u,
  );
});

test('nextVersion 只在 patch 位递增', () => {
  assert.equal(nextVersion('0.1.9'), '0.1.10');
  assert.equal(nextVersion('1.0.0'), '1.0.1');
  assert.throws(() => nextVersion('0.1'), /不是有效的三段版本号/u);
});

test('ossutil 参数默认使用 v1 签名，并可按需带 region 与 v4', () => {
  const base = {
    args: ['cp', '--force', '/tmp/a.json', 'oss://agc-dev/agc/global-version.json'],
    endpoint: 'oss-rg-china-mainland.aliyuncs.com',
    accessKeyId: 'id',
    accessKeySecret: 'secret',
    env: {},
  };
  const v1 = buildOssutilArgs(base);
  assert.equal(v1[v1.indexOf('--sign-version') + 1], 'v1');
  assert.ok(!v1.includes('--region'));
  assert.equal(v1[v1.indexOf('--access-key-id') + 1], 'id');
  assert.equal(v1[v1.indexOf('--access-key-secret') + 1], 'secret');

  const v4 = buildOssutilArgs({
    ...base,
    env: { AGC_OSS_SIGN_VERSION: 'v4', AGC_OSS_REGION: 'cn-beijing' },
  });
  assert.equal(v4[v4.indexOf('--region') + 1], 'cn-beijing');
  assert.equal(v4[v4.indexOf('--sign-version') + 1], 'v4');
});