// Mock data for the admin dashboard
// Replace with real API calls when backend is ready

export interface User {
  id: string;
  name: string;
  email: string;
  plan: 'free' | 'pro' | 'enterprise';
  status: 'active' | 'inactive' | 'suspended';
  createdAt: string;
  lastActive: string;
  totalTokensUsed: number;
  totalRequests: number;
  monthlySpend: number;
}

export interface Subscription {
  id: string;
  name: string;
  price: number;
  interval: 'monthly' | 'yearly';
  features: string[];
  limits: {
    tokensPerMonth: number;
    requestsPerDay: number;
    modelsAllowed: string[];
  };
  activeUsers: number;
}

export interface ApiToken {
  id: string;
  userId: string;
  userName: string;
  name: string;
  prefix: string;
  status: 'active' | 'revoked' | 'expired';
  createdAt: string;
  expiresAt: string;
  lastUsed: string | null;
  scopes: string[];
}

export interface UsageRecord {
  date: string;
  tokens: number;
  requests: number;
  cost: number;
  model: string;
}

export interface ModelUsage {
  model: string;
  tokens: number;
  requests: number;
  cost: number;
  percentage: number;
}

export interface DailyMetric {
  date: string;
  activeUsers: number;
  totalRequests: number;
  totalTokens: number;
  revenue: number;
}

// --- Mock Users ---
export const mockUsers: User[] = [
  {
    id: 'usr_001',
    name: 'Alice Johnson',
    email: 'alice@company.com',
    plan: 'pro',
    status: 'active',
    createdAt: '2025-09-15',
    lastActive: '2026-02-07',
    totalTokensUsed: 2_450_000,
    totalRequests: 12_340,
    monthlySpend: 29.99,
  },
  {
    id: 'usr_002',
    name: 'Bob Smith',
    email: 'bob@startup.io',
    plan: 'enterprise',
    status: 'active',
    createdAt: '2025-08-01',
    lastActive: '2026-02-08',
    totalTokensUsed: 15_800_000,
    totalRequests: 89_200,
    monthlySpend: 149.99,
  },
  {
    id: 'usr_003',
    name: 'Carol Davis',
    email: 'carol@freelance.dev',
    plan: 'free',
    status: 'active',
    createdAt: '2025-12-20',
    lastActive: '2026-02-06',
    totalTokensUsed: 180_000,
    totalRequests: 920,
    monthlySpend: 0,
  },
  {
    id: 'usr_004',
    name: 'David Lee',
    email: 'david@bigcorp.com',
    plan: 'pro',
    status: 'active',
    createdAt: '2025-10-05',
    lastActive: '2026-02-08',
    totalTokensUsed: 5_200_000,
    totalRequests: 28_100,
    monthlySpend: 29.99,
  },
  {
    id: 'usr_005',
    name: 'Eva Martinez',
    email: 'eva@design.co',
    plan: 'pro',
    status: 'inactive',
    createdAt: '2025-11-10',
    lastActive: '2026-01-15',
    totalTokensUsed: 890_000,
    totalRequests: 4_500,
    monthlySpend: 0,
  },
  {
    id: 'usr_006',
    name: 'Frank Wilson',
    email: 'frank@tech.org',
    plan: 'free',
    status: 'active',
    createdAt: '2026-01-02',
    lastActive: '2026-02-07',
    totalTokensUsed: 95_000,
    totalRequests: 480,
    monthlySpend: 0,
  },
  {
    id: 'usr_007',
    name: 'Grace Kim',
    email: 'grace@enterprise.net',
    plan: 'enterprise',
    status: 'active',
    createdAt: '2025-07-20',
    lastActive: '2026-02-08',
    totalTokensUsed: 32_000_000,
    totalRequests: 156_000,
    monthlySpend: 149.99,
  },
  {
    id: 'usr_008',
    name: 'Henry Brown',
    email: 'henry@agency.com',
    plan: 'pro',
    status: 'suspended',
    createdAt: '2025-09-30',
    lastActive: '2026-01-28',
    totalTokensUsed: 3_100_000,
    totalRequests: 15_600,
    monthlySpend: 0,
  },
  {
    id: 'usr_009',
    name: 'Iris Chen',
    email: 'iris@university.edu',
    plan: 'free',
    status: 'active',
    createdAt: '2026-01-15',
    lastActive: '2026-02-08',
    totalTokensUsed: 42_000,
    totalRequests: 210,
    monthlySpend: 0,
  },
  {
    id: 'usr_010',
    name: 'Jake Thompson',
    email: 'jake@consulting.biz',
    plan: 'pro',
    status: 'active',
    createdAt: '2025-11-25',
    lastActive: '2026-02-07',
    totalTokensUsed: 1_800_000,
    totalRequests: 9_200,
    monthlySpend: 29.99,
  },
];

// --- Mock Subscriptions ---
export const mockSubscriptions: Subscription[] = [
  {
    id: 'plan_free',
    name: 'Free',
    price: 0,
    interval: 'monthly',
    features: ['50,000 tokens/month', '100 requests/day', 'GPT-4o-mini only', 'Community support'],
    limits: {
      tokensPerMonth: 50_000,
      requestsPerDay: 100,
      modelsAllowed: ['gpt-4o-mini'],
    },
    activeUsers: 156,
  },
  {
    id: 'plan_pro',
    name: 'Pro',
    price: 29.99,
    interval: 'monthly',
    features: [
      '2,000,000 tokens/month',
      '1,000 requests/day',
      'All models (GPT-4o, Claude, etc.)',
      'Priority support',
      'Custom vocabulary',
      'LLM text cleanup',
    ],
    limits: {
      tokensPerMonth: 2_000_000,
      requestsPerDay: 1_000,
      modelsAllowed: ['gpt-4o-mini', 'gpt-4o', 'claude-3.5-sonnet'],
    },
    activeUsers: 89,
  },
  {
    id: 'plan_enterprise',
    name: 'Enterprise',
    price: 149.99,
    interval: 'monthly',
    features: [
      'Unlimited tokens',
      'Unlimited requests',
      'All models + custom deployments',
      'Dedicated support',
      'SSO / SAML',
      'Audit logs',
      'Custom integrations',
      'SLA guarantee',
    ],
    limits: {
      tokensPerMonth: -1,
      requestsPerDay: -1,
      modelsAllowed: ['gpt-4o-mini', 'gpt-4o', 'claude-3.5-sonnet', 'custom'],
    },
    activeUsers: 12,
  },
];

// --- Mock API Tokens ---
export const mockApiTokens: ApiToken[] = [
  {
    id: 'tok_001',
    userId: 'usr_001',
    userName: 'Alice Johnson',
    name: 'Production App',
    prefix: 'wai_prod_',
    status: 'active',
    createdAt: '2025-10-01',
    expiresAt: '2026-10-01',
    lastUsed: '2026-02-08',
    scopes: ['dictate', 'transcribe', 'cleanup'],
  },
  {
    id: 'tok_002',
    userId: 'usr_002',
    userName: 'Bob Smith',
    name: 'CI/CD Pipeline',
    prefix: 'wai_ci_',
    status: 'active',
    createdAt: '2025-11-15',
    expiresAt: '2026-05-15',
    lastUsed: '2026-02-07',
    scopes: ['dictate', 'transcribe'],
  },
  {
    id: 'tok_003',
    userId: 'usr_004',
    userName: 'David Lee',
    name: 'Dev Environment',
    prefix: 'wai_dev_',
    status: 'active',
    createdAt: '2026-01-10',
    expiresAt: '2026-07-10',
    lastUsed: '2026-02-08',
    scopes: ['dictate', 'transcribe', 'cleanup'],
  },
  {
    id: 'tok_004',
    userId: 'usr_007',
    userName: 'Grace Kim',
    name: 'Team Shared',
    prefix: 'wai_team_',
    status: 'active',
    createdAt: '2025-08-20',
    expiresAt: '2026-08-20',
    lastUsed: '2026-02-08',
    scopes: ['dictate', 'transcribe', 'cleanup', 'admin'],
  },
  {
    id: 'tok_005',
    userId: 'usr_008',
    userName: 'Henry Brown',
    name: 'Old Token',
    prefix: 'wai_old_',
    status: 'revoked',
    createdAt: '2025-06-01',
    expiresAt: '2025-12-01',
    lastUsed: '2025-11-30',
    scopes: ['dictate'],
  },
  {
    id: 'tok_006',
    userId: 'usr_005',
    userName: 'Eva Martinez',
    name: 'Personal',
    prefix: 'wai_per_',
    status: 'expired',
    createdAt: '2025-05-01',
    expiresAt: '2025-11-01',
    lastUsed: '2025-10-28',
    scopes: ['dictate', 'transcribe'],
  },
];

// --- Mock Usage Data (last 30 days) ---
function generateDailyMetrics(): DailyMetric[] {
  const metrics: DailyMetric[] = [];
  const now = new Date('2026-02-08');
  for (let i = 29; i >= 0; i--) {
    const date = new Date(now);
    date.setDate(date.getDate() - i);
    const dayOfWeek = date.getDay();
    const isWeekend = dayOfWeek === 0 || dayOfWeek === 6;
    const base = isWeekend ? 0.6 : 1;
    metrics.push({
      date: date.toISOString().split('T')[0],
      activeUsers: Math.round((120 + Math.random() * 80) * base),
      totalRequests: Math.round((8000 + Math.random() * 4000) * base),
      totalTokens: Math.round((1_500_000 + Math.random() * 800_000) * base),
      revenue: Math.round((1200 + Math.random() * 600) * base * 100) / 100,
    });
  }
  return metrics;
}

export const mockDailyMetrics: DailyMetric[] = generateDailyMetrics();

// --- Mock Model Usage ---
export const mockModelUsage: ModelUsage[] = [
  {
    model: 'gpt-4o-mini',
    tokens: 28_500_000,
    requests: 142_000,
    cost: 428.0,
    percentage: 45,
  },
  {
    model: 'gpt-4o',
    tokens: 18_200_000,
    requests: 68_000,
    cost: 912.0,
    percentage: 29,
  },
  {
    model: 'claude-3.5-sonnet',
    tokens: 12_800_000,
    requests: 52_000,
    cost: 640.0,
    percentage: 20,
  },
  {
    model: 'whisper-v3',
    tokens: 3_600_000,
    requests: 38_000,
    cost: 108.0,
    percentage: 6,
  },
];

// --- Summary Stats ---
export const mockSummaryStats = {
  totalUsers: 257,
  activeUsers: 198,
  totalRevenue: 8_420.5,
  monthlyRecurring: 4_890.0,
  totalTokensThisMonth: 63_100_000,
  totalRequestsThisMonth: 300_000,
  avgTokensPerUser: 318_686,
  churnRate: 2.3,
  newUsersThisMonth: 34,
  conversionRate: 12.5,
};

// --- Audit Log ---
export interface AuditEntry {
  id: string;
  timestamp: string;
  actor: string;
  action: string;
  category: 'auth' | 'user' | 'config' | 'token' | 'billing';
  target?: string;
  details?: string;
  ip: string;
}

export const mockAuditLog: AuditEntry[] = [
  {
    id: 'a1',
    timestamp: '2025-02-08T09:12:00Z',
    actor: 'admin@example.com',
    action: 'Login',
    category: 'auth',
    ip: '10.0.1.42',
    details: 'Successful login',
  },
  {
    id: 'a2',
    timestamp: '2025-02-08T08:55:00Z',
    actor: 'admin@example.com',
    action: 'Suspend User',
    category: 'user',
    target: 'bob.johnson@email.com',
    ip: '10.0.1.42',
    details: 'Exceeded abuse threshold',
  },
  {
    id: 'a3',
    timestamp: '2025-02-08T07:30:00Z',
    actor: 'admin@example.com',
    action: 'Revoke Token',
    category: 'token',
    target: 'tok_analytics_v2',
    ip: '10.0.1.42',
  },
  {
    id: 'a4',
    timestamp: '2025-02-07T22:10:00Z',
    actor: 'admin@example.com',
    action: 'Update Plan Pricing',
    category: 'billing',
    target: 'Pro Plan',
    ip: '10.0.1.42',
    details: '$29/mo → $39/mo',
  },
  {
    id: 'a5',
    timestamp: '2025-02-07T18:45:00Z',
    actor: 'admin@example.com',
    action: 'Enable Maintenance Mode',
    category: 'config',
    ip: '10.0.1.42',
  },
  {
    id: 'a6',
    timestamp: '2025-02-07T18:00:00Z',
    actor: 'admin@example.com',
    action: 'Update Rate Limit',
    category: 'config',
    ip: '10.0.1.42',
    details: 'Per-user limit: 60 → 100 req/min',
  },
  {
    id: 'a7',
    timestamp: '2025-02-07T15:20:00Z',
    actor: 'viewer@example.com',
    action: 'Login',
    category: 'auth',
    ip: '192.168.1.15',
    details: 'Successful login',
  },
  {
    id: 'a8',
    timestamp: '2025-02-07T14:00:00Z',
    actor: 'admin@example.com',
    action: 'Create Token',
    category: 'token',
    target: 'tok_mobile_app',
    ip: '10.0.1.42',
    details: 'Scopes: stt, cleanup',
  },
  {
    id: 'a9',
    timestamp: '2025-02-07T11:30:00Z',
    actor: 'admin@example.com',
    action: 'Reactivate User',
    category: 'user',
    target: 'carol.williams@email.com',
    ip: '10.0.1.42',
  },
  {
    id: 'a10',
    timestamp: '2025-02-07T09:00:00Z',
    actor: 'admin@example.com',
    action: 'Login',
    category: 'auth',
    ip: '10.0.1.42',
    details: 'Successful login',
  },
  {
    id: 'a11',
    timestamp: '2025-02-06T16:45:00Z',
    actor: 'admin@example.com',
    action: 'Disable Maintenance Mode',
    category: 'config',
    ip: '10.0.1.42',
  },
  {
    id: 'a12',
    timestamp: '2025-02-06T14:20:00Z',
    actor: 'admin@example.com',
    action: 'Create New Plan',
    category: 'billing',
    target: 'Startup Plan',
    ip: '10.0.1.42',
    details: '$19/mo, 5M tokens',
  },
  {
    id: 'a13',
    timestamp: '2025-02-06T10:05:00Z',
    actor: 'unknown@attacker.com',
    action: 'Failed Login',
    category: 'auth',
    ip: '203.0.113.99',
    details: 'Invalid credentials (attempt 5)',
  },
  {
    id: 'a14',
    timestamp: '2025-02-06T10:04:00Z',
    actor: 'unknown@attacker.com',
    action: 'Failed Login',
    category: 'auth',
    ip: '203.0.113.99',
    details: 'Invalid credentials (attempt 4)',
  },
  {
    id: 'a15',
    timestamp: '2025-02-05T20:30:00Z',
    actor: 'admin@example.com',
    action: 'Update Azure Config',
    category: 'config',
    ip: '10.0.1.42',
    details: 'Changed speech region to swedencentral',
  },
];

// --- Helper: format numbers ---
export function formatNumber(n: number): string {
  if (n >= 1_000_000) return `${(n / 1_000_000).toFixed(1)}M`;
  if (n >= 1_000) return `${(n / 1_000).toFixed(1)}K`;
  return n.toString();
}

export function formatCurrency(n: number): string {
  return new Intl.NumberFormat('en-US', {
    style: 'currency',
    currency: 'USD',
  }).format(n);
}

export function formatDate(dateStr: string): string {
  return new Date(dateStr).toLocaleDateString('en-US', {
    month: 'short',
    day: 'numeric',
    year: 'numeric',
  });
}