import { test, afterEach } from 'node:test'
import assert from 'node:assert/strict'
import { main } from '../index.js'

const realFetch = globalThis.fetch
const savedEnv = { ...process.env }

afterEach(() => {
  globalThis.fetch = realFetch
  process.env = { ...savedEnv }
})

function jsonResponse(data) {
  return {
    ok: true,
    status: 200,
    headers: { get: () => 'application/json' },
    json: async () => data,
    text: async () => JSON.stringify(data),
  }
}

// 端對端驗證:列出 release → 刪除舊版本 → 重新列出 release → 列出 tag → 刪除孤立 tag。
test('main 完整清理流程:刪除舊 release 與孤立 tag,呼叫順序符合預期', async () => {
  for (const k of ['GITEA_SERVER_URL', 'GITEA_REPOSITORY', 'KEEP_COUNT', 'GITEA_TOKEN']) {
    delete process.env[k]
  }
  Object.assign(process.env, {
    GITEA_SERVER_URL: 'https://gitea.example.com',
    GITEA_REPOSITORY: 'owner/repo',
    KEEP_COUNT: '2',
  })

  const releases = [
    { id: 3, tag_name: 'v3', name: 'r3', created_at: '2024-03-01T00:00:00Z' },
    { id: 2, tag_name: 'v2', name: 'r2', created_at: '2024-02-01T00:00:00Z' },
    { id: 1, tag_name: 'v1', name: 'r1', created_at: '2024-01-01T00:00:00Z' },
  ]
  const tags = [{ name: 'v3' }, { name: 'v2' }, { name: 'v1' }, { name: 'orphan' }]

  const calls = { get: [], delete: [] }
  globalThis.fetch = async (url, opts) => {
    const u = new URL(url)
    const method = (opts && opts.method) || 'GET'
    if (method === 'DELETE') {
      calls.delete.push(u.pathname)
      return { status: 204 }
    }
    const page = u.searchParams.get('page')
    calls.get.push(`${u.pathname}?page=${page}`)
    if (u.pathname.endsWith('/releases')) {
      return jsonResponse(page === '1' ? releases : [])
    }
    if (u.pathname.endsWith('/tags')) {
      return jsonResponse(page === '1' ? tags : [])
    }
    return jsonResponse([])
  }

  await main()

  // 保留最新 2 筆(v3、v2),刪除最舊 v1(id=1);孤立 tag 'orphan' 被刪除
  assert.deepEqual(calls.delete, [
    '/api/v1/repos/owner/repo/releases/1',
    '/api/v1/repos/owner/repo/tags/orphan',
  ])
  // release 清單被讀取兩次(清理舊版本一次、清理 tag 前重新讀取一次)
  const releaseListGets = calls.get.filter((c) => c.includes('/releases?page=1'))
  assert.equal(releaseListGets.length, 2)
})