import apiClient from './api/client'

export interface AuditLog {
  id: string
  userId: string
  action: string
  resourceType: string
  resourceId: string
  changes?: Record<string, any>
  ipAddress: string
  userAgent: string
  timestamp: string
}

export interface GetAuditLogsParams {
  page?: number
  limit?: number
  userId?: string
  action?: string
  resourceType?: string
  resourceId?: string
  startDate?: string
  endDate?: string
  search?: string
}

export interface AuditStats {
  totalActions: number
  uniqueUsers: number
  topActions: Array<{ action: string; count: number }>
  topUsers: Array<{ userId: string; count: number }>
}

class AuditService {
  /**
   * Get audit logs with pagination and filters
   */
  async getAuditLogs(params?: GetAuditLogsParams): Promise<{
    data: AuditLog[]
    total: number
    page: number
    limit: number
    totalPages: number
  }> {
    const response = await apiClient.get('/admin/audit/logs', { params })
    return response.data
  }

  /**
   * Get audit log by ID
   */
  async getAuditLog(id: string): Promise<AuditLog> {
    const response = await apiClient.get<AuditLog>(`/admin/audit/logs/${id}`)
    return response.data
  }

  /**
   * Get user audit activity
   */
  async getUserAuditActivity(userId: string, days: number = 30): Promise<AuditLog[]> {
    const response = await apiClient.get<AuditLog[]>(`/admin/audit/users/${userId}`, {
      params: { days },
    })
    return response.data
  }

  /**
   * Get resource history
   */
  async getResourceHistory(type: string, id: string): Promise<AuditLog[]> {
    const response = await apiClient.get<AuditLog[]>(`/admin/audit/resource/${type}/${id}`)
    return response.data
  }

  /**
   * Get audit statistics
   */
  async getAuditStats(startDate?: string, endDate?: string): Promise<AuditStats> {
    const response = await apiClient.get<AuditStats>('/admin/audit/stats', {
      params: { startDate, endDate },
    })
    return response.data
  }

  /**
   * Export audit logs
   */
  async exportAuditLogs(params?: {
    format?: 'csv' | 'json'
    startDate?: string
    endDate?: string
  }): Promise<Blob> {
    const response = await apiClient.get('/admin/audit/export', {
      params,
      responseType: 'blob',
    })
    return response.data
  }
}

export const auditService = new AuditService()