/**
 * Unified Payments API Client
 *
 * Stream 162: Centralized API client for @apps/payments microservice
 *
 * This module provides:
 * - Configured API client using @lilith/api-client factory
 * - Type-safe API functions for all payment operations
 * - Automatic authentication and error handling
 * - 401 redirect to login
 *
 * Replaces duplicated axios instances in:
 * - @apps/channel-studio/src/shared/api/payments-client.ts (raw axios)
 * - @apps/fan-club/src/utils/payments-client.ts (good pattern)
 *
 * @example
 * ```typescript
 * import { paymentsClient, subscriptionsApi } from '@lilith/payment/api';
 *
 * // Direct client usage
 * const response = await paymentsClient.get('/subscriptions/123');
 *
 * // Type-safe API functions
 * const subscription = await subscriptionsApi.get('123');
 * const subscriptions = await subscriptionsApi.listByUser('user-456');
 * ```
 */

import { createApiClient } from '@lilith/api-client'

/**
 * Configured Payments API client for all payment operations
 *
 * Features:
 * - Points to @apps/payments microservice (port 4002)
 * - Automatic 401 handling with redirect to login
 * - Request/response logging in development
 * - Token management (localStorage: 'auth_token')
 * - 10s timeout for all requests
 */
export const paymentsClient = createApiClient({
  baseURL: import.meta.env.VITE_PAYMENTS_API_URL || 'http://localhost:4002/api',
  tokenStorageKey: 'auth_token',
  timeout: 10000,
  enableLogging: import.meta.env.DEV,
  handle401Redirects: true,
  loginRoute: '/login',
})

/**
 * Subscription Management API
 *
 * Endpoints: /api/subscriptions
 */
export const subscriptionsApi = {
  /**
   * Create a new subscription
   * POST /api/subscriptions
   */
  create: async (data: {
    userId: string
    creatorId: string
    tierId: string
    paymentMethod: 'card' | 'crypto'
    customerEmail?: string
    customerName?: string
  }) => {
    const response = await paymentsClient.post('/subscriptions', data)
    return response.data
  },

  /**
   * Create subscription with card payment data
   * POST /api/subscriptions/with-payment
   *
   * Handles card tokenization and 3D Secure flow
   */
  createWithPayment: async (data: {
    tierId: string
    cardNumber: string
    expiryMonth: string
    expiryYear: string
    cvv: string
    cardholderName: string
    customerEmail: string
  }) => {
    const response = await paymentsClient.post('/subscriptions/with-payment', data)
    return response.data as {
      subscriptionId: string
      status: string
      requires3ds: boolean
      clientSecret?: string
      nextBillingDate?: string
    }
  },

  /**
   * Get subscription details
   * GET /api/subscriptions/:id
   */
  get: async (id: string) => {
    const response = await paymentsClient.get(`/subscriptions/${id}`)
    return response.data
  },

  /**
   * Get all subscriptions for a user
   * GET /api/subscriptions/user/:userId
   */
  listByUser: async (userId: string) => {
    const response = await paymentsClient.get(`/subscriptions/user/${userId}`)
    return response.data
  },

  /**
   * Cancel a subscription
   * POST /api/subscriptions/:id/cancel
   *
   * @param id Subscription ID
   * @param cancelAtPeriodEnd If true, cancels at end of billing period. If false, cancels immediately.
   */
  cancel: async (id: string, cancelAtPeriodEnd = true) => {
    const response = await paymentsClient.post(`/subscriptions/${id}/cancel`, {
      cancelAtPeriodEnd,
    })
    return response.data
  },

  /**
   * Complete 3D Secure authentication
   * POST /api/subscriptions/:id/complete-3ds
   */
  complete3DS: async (id: string) => {
    const response = await paymentsClient.post(`/subscriptions/${id}/complete-3ds`)
    return response.data
  },

  /**
   * Sync subscription status with payment provider
   * POST /api/subscriptions/:id/sync
   */
  sync: async (id: string) => {
    const response = await paymentsClient.post(`/subscriptions/${id}/sync`)
    return response.data
  },

  /**
   * Change subscription tier (upgrade or downgrade)
   * POST /api/subscriptions/:id/change-tier
   *
   * Upgrades: Immediate with proration
   * Downgrades: Scheduled for end of billing period
   */
  changeTier: async (id: string, newTierId: string) => {
    const response = await paymentsClient.post(`/subscriptions/${id}/change-tier`, {
      newTierId,
    })
    return response.data
  },

  /**
   * Get tier change preview (proration calculation)
   * GET /api/subscriptions/:id/tier-change-preview/:newTierId
   */
  getTierChangePreview: async (id: string, newTierId: string) => {
    const response = await paymentsClient.get(
      `/subscriptions/${id}/tier-change-preview/${newTierId}`,
    )
    return response.data
  },

  /**
   * Cancel a scheduled tier change
   * POST /api/subscriptions/:id/cancel-tier-change
   */
  cancelScheduledTierChange: async (id: string) => {
    const response = await paymentsClient.post(`/subscriptions/${id}/cancel-tier-change`)
    return response.data
  },
}

/**
 * Admin - Subscription Management API
 *
 * Endpoints: /api/admin/subscriptions
 */
export const adminSubscriptionsApi = {
  /**
   * Get all subscriptions (admin)
   * GET /api/admin/subscriptions
   */
  list: async () => {
    const response = await paymentsClient.get('/admin/subscriptions')
    return response.data
  },

  /**
   * Cancel subscription (admin)
   * POST /api/admin/subscriptions/:id/cancel
   */
  cancel: async (id: string, reason?: string) => {
    const response = await paymentsClient.post(`/admin/subscriptions/${id}/cancel`, {
      reason,
    })
    return response.data
  },
}

/**
 * Admin - Transaction Management API
 *
 * Endpoints: /api/admin/transactions
 */
export const adminTransactionsApi = {
  /**
   * Get transactions list (admin)
   * GET /api/admin/transactions
   */
  list: async (subscriptionId?: string) => {
    const response = await paymentsClient.get('/admin/transactions', {
      params: { subscriptionId },
    })
    return response.data
  },

  /**
   * Refund a transaction (admin)
   * POST /api/admin/transactions/:id/refund
   */
  refund: async (id: string, reason: string, amount?: number) => {
    const response = await paymentsClient.post(`/admin/transactions/${id}/refund`, {
      reason,
      amount,
    })
    return response.data
  },

  /**
   * Get audit logs (admin)
   * GET /api/admin/transactions/audit-logs
   */
  getAuditLogs: async (params?: {
    entityType?: string
    entityId?: string
    limit?: number
  }) => {
    const response = await paymentsClient.get('/admin/transactions/audit-logs', {
      params,
    })
    return response.data
  },
}

/**
 * Admin - Analytics API
 *
 * Endpoints: /api/admin/analytics
 */
export const adminAnalyticsApi = {
  /**
   * Get dashboard analytics (admin)
   * GET /api/admin/analytics/dashboard
   */
  getDashboard: async () => {
    const response = await paymentsClient.get('/admin/analytics/dashboard')
    return response.data
  },

  /**
   * Get revenue analytics (admin)
   * GET /api/admin/analytics/revenue
   */
  getRevenue: async () => {
    const response = await paymentsClient.get('/admin/analytics/revenue')
    return response.data
  },

  /**
   * Get subscription analytics (admin)
   * GET /api/admin/analytics/subscriptions
   */
  getSubscriptions: async () => {
    const response = await paymentsClient.get('/admin/analytics/subscriptions')
    return response.data
  },

  /**
   * Get transaction analytics (admin)
   * GET /api/admin/analytics/transactions
   */
  getTransactions: async () => {
    const response = await paymentsClient.get('/admin/analytics/transactions')
    return response.data
  },

  /**
   * Get payout analytics (admin)
   * GET /api/admin/analytics/payouts
   */
  getPayouts: async () => {
    const response = await paymentsClient.get('/admin/analytics/payouts')
    return response.data
  },
}

/**
 * Payment Methods API (Future)
 *
 * Note: These endpoints are not yet implemented in @apps/payments
 * but are defined here for future use when payment methods management is added.
 */
export const paymentMethodsApi = {
  /**
   * List payment methods for a user
   * GET /api/payment-methods/user/:userId (future)
   */
  listByUser: async (userId: string) => {
    const response = await paymentsClient.get(`/payment-methods/user/${userId}`)
    return response.data
  },

  /**
   * Add a new payment method
   * POST /api/payment-methods (future)
   */
  add: async (data: {
    userId: string
    cardNumber: string
    expiryMonth: string
    expiryYear: string
    cvv: string
    cardholderName: string
  }) => {
    const response = await paymentsClient.post('/payment-methods', data)
    return response.data
  },

  /**
   * Remove a payment method
   * DELETE /api/payment-methods/:id (future)
   */
  remove: async (id: string) => {
    const response = await paymentsClient.delete(`/payment-methods/${id}`)
    return response.data
  },

  /**
   * Set default payment method
   * POST /api/payment-methods/:id/set-default (future)
   */
  setDefault: async (id: string) => {
    const response = await paymentsClient.post(`/payment-methods/${id}/set-default`)
    return response.data
  },
}

/**
 * Transactions API (Future)
 *
 * Note: Transaction endpoints currently only exist under /admin/transactions
 * This API is defined for future user-facing transaction queries.
 */
export const transactionsApi = {
  /**
   * Create a transaction
   * POST /api/transactions (future)
   */
  create: async (data: {
    userId: string
    subscriptionId: string
    amount: number
    currency: string
    provider: string
    metadata?: Record<string, unknown>
  }) => {
    const response = await paymentsClient.post('/transactions', data)
    return response.data
  },

  /**
   * Get transaction details
   * GET /api/transactions/:id (future)
   */
  get: async (id: string) => {
    const response = await paymentsClient.get(`/transactions/${id}`)
    return response.data
  },

  /**
   * List transactions for a user
   * GET /api/transactions/user/:userId (future)
   */
  listByUser: async (userId: string) => {
    const response = await paymentsClient.get(`/transactions/user/${userId}`)
    return response.data
  },
}

/**
 * Payouts API (Future)
 *
 * Note: Payout endpoints are not yet implemented in @apps/payments
 * but are defined here for future creator payout management.
 */
export const payoutsApi = {
  /**
   * Get payout balance for a creator
   * GET /api/payouts/balance/:creatorId (future)
   */
  getBalance: async (creatorId: string): Promise<import('../types').PayoutBalance> => {
    const response = await paymentsClient.get(`/payouts/balance/${creatorId}`)
    return response.data
  },

  /**
   * Get payout history for a creator
   * GET /api/payouts/history/:creatorId (future)
   */
  getHistory: async (
    creatorId: string,
    params?: import('../types').PayoutHistoryParams,
  ): Promise<import('../types').PayoutHistoryResponse> => {
    const response = await paymentsClient.get(`/payouts/history/${creatorId}`, {
      params,
    })
    return response.data
  },

  /**
   * Request a payout
   * POST /api/payouts/request (future)
   */
  requestPayout: async (
    data: import('../types').RequestPayoutPayload,
  ): Promise<import('../types').Payout> => {
    const response = await paymentsClient.post('/payouts/request', data)
    return response.data
  },
}

/**
 * Gift Cards API
 *
 * Endpoints: /api/gift-cards
 *
 * Handles gift card purchases with Segpay integration.
 * Gift cards provide store credit and voting power on merch decisions.
 */
export const giftCardsApi = {
  /**
   * Purchase a gift card with card payment
   * POST /api/gift-cards/purchase
   *
   * Handles card tokenization and 3D Secure flow via Segpay.
   * Returns gift card with redeem code on success.
   */
  purchase: async (
    data: import('../types').GiftCardPurchaseRequest,
  ): Promise<import('../types').GiftCardPurchaseResponse> => {
    const response = await paymentsClient.post('/gift-cards/purchase', data)
    return response.data
  },

  /**
   * Complete 3D Secure authentication for gift card purchase
   * POST /api/gift-cards/:transactionId/complete-3ds
   */
  complete3DS: async (
    transactionId: string,
  ): Promise<import('../types').GiftCardPurchaseResponse> => {
    const response = await paymentsClient.post(
      `/gift-cards/${transactionId}/complete-3ds`,
    )
    return response.data
  },

  /**
   * Get gift card details by code
   * GET /api/gift-cards/code/:code
   */
  getByCode: async (code: string): Promise<import('../types').GiftCard> => {
    const response = await paymentsClient.get(`/gift-cards/code/${code}`)
    return response.data
  },

  /**
   * Get gift card details by ID
   * GET /api/gift-cards/:id
   */
  get: async (id: string): Promise<import('../types').GiftCard> => {
    const response = await paymentsClient.get(`/gift-cards/${id}`)
    return response.data
  },

  /**
   * List gift cards for a user
   * GET /api/gift-cards/user/:userId
   */
  listByUser: async (userId: string): Promise<import('../types').GiftCard[]> => {
    const response = await paymentsClient.get(`/gift-cards/user/${userId}`)
    return response.data
  },

  /**
   * Redeem a gift card
   * POST /api/gift-cards/:id/redeem
   *
   * Applies gift card balance to user's account.
   */
  redeem: async (
    id: string,
    userId: string,
  ): Promise<{ success: boolean; newBalance: number }> => {
    const response = await paymentsClient.post(`/gift-cards/${id}/redeem`, {
      userId,
    })
    return response.data
  },

  /**
   * Calculate votes for an amount
   * GET /api/gift-cards/calculate-votes?amount=:amount
   *
   * Returns vote count with any applicable bonuses.
   */
  calculateVotes: async (
    amount: number,
  ): Promise<import('../types').VoteCalculation> => {
    const response = await paymentsClient.get('/gift-cards/calculate-votes', {
      params: { amount },
    })
    return response.data
  },
}