import { afterEach, beforeEach, describe, expect, it } from 'bun:test'
import * as fs from 'node:fs/promises'
import * as os from 'node:os'
import * as path from 'node:path'
import { handleAdaptersApi } from '../api/adapters.js'

let tmpDir: string
let originalConfigDir: string | undefined

async function setup() {
  tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'claude-adapters-test-'))
  originalConfigDir = process.env.CLAUDE_CONFIG_DIR
  process.env.CLAUDE_CONFIG_DIR = tmpDir
}

async function teardown() {
  if (originalConfigDir !== undefined) {
    process.env.CLAUDE_CONFIG_DIR = originalConfigDir
  } else {
    delete process.env.CLAUDE_CONFIG_DIR
  }
  await fs.rm(tmpDir, { recursive: true, force: true })
}

function makeRequest(method: string, pathName: string, body?: Record<string, unknown>) {
  const url = new URL(pathName, 'http://localhost:3456')
  const req = new Request(url.toString(), {
    method,
    headers: body ? { 'Content-Type': 'application/json' } : undefined,
    body: body ? JSON.stringify(body) : undefined,
  })
  const segments = url.pathname.split('/').filter(Boolean)
  return { req, url, segments }
}

describe('Adapters API', () => {
  beforeEach(setup)
  afterEach(teardown)

  it('masks WeChat bot tokens in GET responses', async () => {
    const put = makeRequest('PUT', '/api/adapters', {
      wechat: {
        accountId: 'bot-1',
        botToken: 'wechat-secret-token',
        baseUrl: 'https://ilinkai.weixin.qq.com',
        userId: 'wx-user',
        pairedUsers: [{ userId: 'wx-user', displayName: 'WeChat User', pairedAt: 1 }],
      },
    })
    expect((await handleAdaptersApi(put.req, put.url, put.segments)).status).toBe(200)

    const get = makeRequest('GET', '/api/adapters')
    const res = await handleAdaptersApi(get.req, get.url, get.segments)
    expect(res.status).toBe(200)
    const json = await res.json() as any
    expect(json.wechat.botToken).toBe('****oken')
    expect(json.wechat.accountId).toBe('bot-1')
  })

  it('writes adapter credentials with owner-only permissions', async () => {
    const put = makeRequest('PUT', '/api/adapters', {
      telegram: {
        botToken: 'telegram-secret-token',
      },
    })
    expect((await handleAdaptersApi(put.req, put.url, put.segments)).status).toBe(200)

    const configPath = path.join(tmpDir, 'adapters.json')
    const stat = await fs.stat(configPath)
    expect(stat.mode & 0o777).toBe(0o600)
  })

  it('masks and preserves DingTalk client secrets', async () => {
    const put = makeRequest('PUT', '/api/adapters', {
      dingtalk: {
        clientId: 'ding-client-1',
        clientSecret: 'dingtalk-client-secret',
        permissionCardTemplateId: 'permission-template',
        pairedUsers: [{ userId: 'ding-user', displayName: 'DingTalk User', pairedAt: 1 }],
      },
    })
    expect((await handleAdaptersApi(put.req, put.url, put.segments)).status).toBe(200)

    const get = makeRequest('GET', '/api/adapters')
    const res = await handleAdaptersApi(get.req, get.url, get.segments)
    expect(res.status).toBe(200)
    const json = await res.json() as any
    expect(json.dingtalk.clientSecret).toBe('****cret')
    expect(json.dingtalk.clientId).toBe('ding-client-1')
    expect(json.dingtalk.permissionCardTemplateId).toBe('permission-template')

    const maskedPut = makeRequest('PUT', '/api/adapters', {
      dingtalk: {
        clientSecret: json.dingtalk.clientSecret,
        allowedUsers: ['ding-user'],
      },
    })
    expect((await handleAdaptersApi(maskedPut.req, maskedPut.url, maskedPut.segments)).status).toBe(200)

    const raw = JSON.parse(await fs.readFile(path.join(tmpDir, 'adapters.json'), 'utf-8')) as any
    expect(raw.dingtalk.clientSecret).toBe('dingtalk-client-secret')
    expect(raw.dingtalk.allowedUsers).toEqual(['ding-user'])
    expect(raw.dingtalk.permissionCardTemplateId).toBe('permission-template')
  })

  it('clears WeChat credentials on unbind', async () => {
    const put = makeRequest('PUT', '/api/adapters', {
      wechat: {
        accountId: 'bot-1',
        botToken: 'wechat-secret-token',
        userId: 'wx-user',
        allowedUsers: ['wx-allowed-user'],
        pairedUsers: [{ userId: 'wx-user', displayName: 'WeChat User', pairedAt: 1 }],
      },
    })
    await handleAdaptersApi(put.req, put.url, put.segments)

    const unbind = makeRequest('POST', '/api/adapters/wechat/unbind')
    const res = await handleAdaptersApi(unbind.req, unbind.url, unbind.segments)
    expect(res.status).toBe(200)
    const json = await res.json() as any
    expect(json.wechat.botToken).toBeUndefined()
    expect(json.wechat.accountId).toBeUndefined()
    expect(json.wechat.userId).toBeUndefined()
    expect(json.wechat.allowedUsers).toEqual([])
    expect(json.wechat.pairedUsers).toEqual([])
  })

  it('clears DingTalk credentials on unbind', async () => {
    const put = makeRequest('PUT', '/api/adapters', {
      dingtalk: {
        clientId: 'ding-client-1',
        clientSecret: 'dingtalk-client-secret',
        allowedUsers: ['ding-allowed-user'],
        permissionCardTemplateId: 'permission-template',
        pairedUsers: [{ userId: 'ding-user', displayName: 'DingTalk User', pairedAt: 1 }],
      },
    })
    await handleAdaptersApi(put.req, put.url, put.segments)

    const unbind = makeRequest('POST', '/api/adapters/dingtalk/unbind')
    const res = await handleAdaptersApi(unbind.req, unbind.url, unbind.segments)
    expect(res.status).toBe(200)
    const json = await res.json() as any
    expect(json.dingtalk.clientId).toBeUndefined()
    expect(json.dingtalk.clientSecret).toBeUndefined()
    expect(json.dingtalk.allowedUsers).toEqual([])
    expect(json.dingtalk.permissionCardTemplateId).toBeUndefined()
    expect(json.dingtalk.pairedUsers).toEqual([])
  })
})