/**
 * Audit Logs API
 *
 * Endpoints for viewing audit trail (admin/manager only)
 */

import { get } from './client';
import type { AuditLogListResponse, AuditLogStatsResponse } from '@/types/api';

/**
 * List audit logs with pagination
 * GET /api/v1/audit?page=1&limit=50&action=CREATE_BOOKING&userId=xxx&entityType=Booking&startDate=2024-01-01&endDate=2024-12-31
 * Requires: ADMIN or MANAGER role
 */
export async function listAuditLogs(params?: {
  page?: number;
  limit?: number;
  action?: string;
  userId?: string;
  entityType?: string;
  entityId?: string;
  startDate?: string;
  endDate?: string;
}): Promise<AuditLogListResponse> {
  const queryParams = new URLSearchParams();
  if (params?.page) queryParams.append('page', params.page.toString());
  if (params?.limit) queryParams.append('limit', params.limit.toString());
  if (params?.action) queryParams.append('action', params.action);
  if (params?.userId) queryParams.append('userId', params.userId);
  if (params?.entityType) queryParams.append('entityType', params.entityType);
  if (params?.entityId) queryParams.append('entityId', params.entityId);
  if (params?.startDate) queryParams.append('startDate', params.startDate);
  if (params?.endDate) queryParams.append('endDate', params.endDate);

  const queryString = queryParams.toString();
  return get<AuditLogListResponse>(`/api/v1/audit${queryString ? `?${queryString}` : ''}`);
}

/**
 * Get audit logs for specific entity
 * GET /api/v1/audit/entity/:entityType/:entityId
 * Requires: ADMIN or MANAGER role
 */
export async function getEntityAuditLogs(
  entityType: string,
  entityId: string
): Promise<AuditLogListResponse> {
  return get<AuditLogListResponse>(`/api/v1/audit/entity/${entityType}/${entityId}`);
}

/**
 * Get audit logs for specific user
 * GET /api/v1/audit/user/:userId?page=1&limit=50
 * Requires: ADMIN or MANAGER role
 */
export async function getUserAuditLogs(
  userId: string,
  params?: { page?: number; limit?: number }
): Promise<AuditLogListResponse> {
  const queryParams = new URLSearchParams();
  if (params?.page) queryParams.append('page', params.page.toString());
  if (params?.limit) queryParams.append('limit', params.limit.toString());

  const queryString = queryParams.toString();
  return get<AuditLogListResponse>(
    `/api/v1/audit/user/${userId}${queryString ? `?${queryString}` : ''}`
  );
}

/**
 * Get audit statistics
 * GET /api/v1/audit/stats?startDate=2024-01-01&endDate=2024-12-31
 * Requires: ADMIN role
 */
export async function getAuditStats(params?: {
  startDate?: string;
  endDate?: string;
}): Promise<AuditLogStatsResponse> {
  const queryParams = new URLSearchParams();
  if (params?.startDate) queryParams.append('startDate', params.startDate);
  if (params?.endDate) queryParams.append('endDate', params.endDate);

  const queryString = queryParams.toString();
  return get<AuditLogStatsResponse>(`/api/v1/audit/stats${queryString ? `?${queryString}` : ''}`);
}

/**
 * Export audit logs (CSV)
 * GET /api/v1/audit/export?format=csv&startDate=2024-01-01&endDate=2024-12-31
 * Requires: ADMIN role
 * Returns blob for download
 */
export async function exportAuditLogs(params?: {
  format?: 'csv';
  startDate?: string;
  endDate?: string;
  action?: string;
  userId?: string;
}): Promise<Blob> {
  const queryParams = new URLSearchParams();
  if (params?.format) queryParams.append('format', params.format);
  if (params?.startDate) queryParams.append('startDate', params.startDate);
  if (params?.endDate) queryParams.append('endDate', params.endDate);
  if (params?.action) queryParams.append('action', params.action);
  if (params?.userId) queryParams.append('userId', params.userId);

  const response = await fetch(
    `${process.env.NEXT_PUBLIC_API_URL}/api/v1/audit/export?${queryParams.toString()}`,
    {
      method: 'GET',
      headers: {
        Authorization: `Bearer ${
          typeof window !== 'undefined' ? localStorage.getItem('access_token') : ''
        }`,
      },
    }
  );

  if (!response.ok) {
    throw new Error(`Export failed: ${response.statusText}`);
  }

  return response.blob();
}