import { test, expect } from '@playwright/test'

/**
 * Multi-Sig Security E2E Test
 * ===========================
 * CISO-101: 資安驗收測試
 *
 * 驗證項目:
 * 1. CRITICAL 授權需要 2 人簽核
 * 2. 同一人不能重複簽核 (Identity Check)
 * 3. 第二人簽核後 → APPROVED
 *
 * ⚠️ 條件式執行說明:
 *   - 此測試需要後端 API 連線 (localhost:8000 或 192.168.0.125:32334)
 *   - CI/CD 環境無法連接生產 API，故標記為條件式執行
 *   - 本地開發環境可正常執行
 *   - 設定 SKIP_MULTISIG_TESTS=true 可強制跳過
 *
 * P2 改進 (2026-03-29 首席架構師審查):
 *   - 新增 SKIP_MULTISIG_TESTS 環境變數控制
 *   - 改善跳過訊息的可讀性
 *
 * @version 1.1.0
 * @date 2026-03-29 (台北時間)
 */

const API_BASE_URL = process.env.TEST_API_URL || 'http://localhost:8000'
const FORCE_SKIP = process.env.SKIP_MULTISIG_TESTS === 'true'

// 檢查 API 是否可用
async function isApiAvailable(): Promise<boolean> {
  if (FORCE_SKIP) {
    console.log('⚠️ Multi-Sig tests skipped: SKIP_MULTISIG_TESTS=true')
    return false
  }
  try {
    const response = await fetch(`${API_BASE_URL}/api/v1/health`, {
      method: 'GET',
      signal: AbortSignal.timeout(5000),
    })
    return response.ok
  } catch {
    return false
  }
}

test.describe('Multi-Sig Security Verification', () => {
  // 條件式跳過: 當 API 不可用時
  test.beforeAll(async () => {
    const apiAvailable = await isApiAvailable()
    if (!apiAvailable) {
      console.log('┌────────────────────────────────────────────────┐')
      console.log('│  ⚠️  Multi-Sig tests SKIPPED                   │')
      console.log('├────────────────────────────────────────────────┤')
      console.log(`│  API URL: ${API_BASE_URL.padEnd(35)}│`)
      console.log('│  Reason: Backend API not available            │')
      console.log('│  To run: Start API server first               │')
      console.log('└────────────────────────────────────────────────┘')
      test.skip()
    }
  })
  test.setTimeout(120000)

  // 輔助函數: 建立 CRITICAL 授權
  async function createCriticalApproval(): Promise<string> {
    const response = await fetch(`${API_BASE_URL}/api/v1/approvals`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        action: 'DROP TABLE user_sessions',
        description: 'E2E Security Test - Multi-Sig verification',
        risk_level: 'critical',
        blast_radius: {
          affected_pods: 0,
          estimated_downtime: '0',
          related_services: ['auth-service', 'api-gateway'],
          data_impact: 'destructive',
        },
        dry_run_checks: [
          { name: 'RBAC Check', passed: true, message: 'test-admin' },
          { name: 'Syntax Check', passed: true },
        ],
        requested_by: 'E2E-Test',
      }),
    })

    expect(response.ok).toBeTruthy()
    const data = await response.json()
    expect(data.status).toBe('pending')
    expect(data.required_signatures).toBe(2)
    return data.id
  }

  // 輔助函數: 簽核
  async function signApproval(
    approvalId: string,
    signerId: string,
    signerName: string
  ): Promise<{ success: boolean; status: number; data: any }> {
    const response = await fetch(
      `${API_BASE_URL}/api/v1/approvals/${approvalId}/sign`,
      {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          signer_id: signerId,
          signer_name: signerName,
          comment: `E2E Test sign by ${signerName}`,
        }),
      }
    )

    const data = await response.json()
    return {
      success: response.ok,
      status: response.status,
      data,
    }
  }

  test('Step 1-4: Full Multi-Sig Security Flow', async ({ page }) => {
    // ========================================================================
    // Step 1: 建立 CRITICAL 授權
    // ========================================================================
    console.log('Step 1: Creating CRITICAL approval...')

    const approvalId = await createCriticalApproval()
    console.log(`Created approval: ${approvalId}`)

    // 截圖: 初始狀態
    await page.goto('/zh-TW/demo', { waitUntil: 'domcontentloaded' })
    await page.waitForTimeout(3000)
    await page.screenshot({
      path: 'test-results/screenshots/multisig-01-initial.png',
      fullPage: true,
    })

    // ========================================================================
    // Step 2: User A (admin-1) 第一次簽核
    // ========================================================================
    console.log('Step 2: User A (admin-1) signing...')

    const sign1Result = await signApproval(approvalId, 'admin-1', 'Admin A (CTO)')

    expect(sign1Result.success).toBeTruthy()
    expect(sign1Result.data.approval.status).toBe('pending')
    expect(sign1Result.data.approval.current_signatures).toBe(1)
    expect(sign1Result.data.approval.required_signatures).toBe(2)
    expect(sign1Result.data.execution_triggered).toBe(false)

    console.log('✅ First signature accepted: 1/2')

    // 截圖: 1/2 簽核狀態
    await page.reload({ waitUntil: 'domcontentloaded' })
    await page.waitForTimeout(2000)
    await page.screenshot({
      path: 'test-results/screenshots/multisig-02-first-sign.png',
      fullPage: true,
    })

    // ========================================================================
    // Step 3: User A (admin-1) 嘗試重複簽核 → 應被拒絕
    // ========================================================================
    console.log('Step 3: User A attempting duplicate signature...')

    const duplicateResult = await signApproval(approvalId, 'admin-1', 'Admin A (CTO)')

    // 關鍵斷言: 重複簽核必須被拒絕
    expect(duplicateResult.success).toBeFalsy()
    expect(duplicateResult.status).toBe(400)
    expect(duplicateResult.data.detail).toContain('already signed')

    console.log('✅ Duplicate signature REJECTED: 400 Bad Request')
    console.log(`   Error: ${duplicateResult.data.detail}`)

    // 截圖: 重複簽核被拒
    await page.screenshot({
      path: 'test-results/screenshots/multisig-03-duplicate-rejected.png',
      fullPage: true,
    })

    // ========================================================================
    // Step 4: User B (admin-2) 簽核 → APPROVED
    // ========================================================================
    console.log('Step 4: User B (admin-2) signing...')

    const sign2Result = await signApproval(approvalId, 'admin-2', 'Admin B (CISO)')

    expect(sign2Result.success).toBeTruthy()
    expect(sign2Result.data.approval.status).toBe('approved')
    expect(sign2Result.data.approval.current_signatures).toBe(2)
    expect(sign2Result.data.execution_triggered).toBe(true)

    console.log('✅ Second signature accepted: 2/2 → APPROVED')
    console.log('✅ Execution triggered!')

    // 截圖: 最終狀態
    await page.reload({ waitUntil: 'domcontentloaded' })
    await page.waitForTimeout(2000)
    await page.screenshot({
      path: 'test-results/screenshots/multisig-04-approved.png',
      fullPage: true,
    })

    // ========================================================================
    // 驗證: 確認已從 pending 清單移除
    // ========================================================================
    const pendingResponse = await fetch(`${API_BASE_URL}/api/v1/approvals/pending`)
    const pendingData = await pendingResponse.json()

    const stillPending = pendingData.approvals.find(
      (a: any) => a.id === approvalId
    )
    expect(stillPending).toBeUndefined()

    console.log('✅ Approval removed from pending list')

    // ========================================================================
    // 最終報告
    // ========================================================================
    console.log('')
    console.log('═══════════════════════════════════════════════════════')
    console.log('  Multi-Sig Security Test: ALL PASSED')
    console.log('═══════════════════════════════════════════════════════')
    console.log('')
    console.log('  ✅ Step 1: CRITICAL approval created (0/2)')
    console.log('  ✅ Step 2: First signature accepted (1/2)')
    console.log('  ✅ Step 3: Duplicate signature REJECTED (400)')
    console.log('  ✅ Step 4: Second signature → APPROVED (2/2)')
    console.log('')
    console.log('  Identity Check: ENFORCED')
    console.log('  Multi-Sig Logic: VERIFIED')
    console.log('═══════════════════════════════════════════════════════')
  })

  test('Duplicate signature returns 400 with correct error message', async () => {
    // 建立授權
    const approvalId = await createCriticalApproval()

    // 第一次簽核
    const first = await signApproval(approvalId, 'user-test-001', 'Test User')
    expect(first.success).toBeTruthy()

    // 重複簽核
    const duplicate = await signApproval(approvalId, 'user-test-001', 'Test User')

    // 斷言
    expect(duplicate.success).toBeFalsy()
    expect(duplicate.status).toBe(400)
    expect(duplicate.data.detail).toMatch(/already signed/i)
  })

  test('Cannot sign after approval is completed', async () => {
    // 建立授權
    const approvalId = await createCriticalApproval()

    // 兩人簽核完成
    await signApproval(approvalId, 'signer-A', 'Signer A')
    const complete = await signApproval(approvalId, 'signer-B', 'Signer B')
    expect(complete.data.approval.status).toBe('approved')

    // 第三人嘗試簽核已完成的授權
    const lateSign = await signApproval(approvalId, 'signer-C', 'Signer C')

    expect(lateSign.success).toBeFalsy()
    expect(lateSign.status).toBe(400)
    expect(lateSign.data.detail).toMatch(/cannot sign/i)
  })
})