import apiClient from './api/client'

export interface HealthStatus {
  status: 'healthy' | 'degraded' | 'down'
  database: 'connected' | 'disconnected'
  redis: 'connected' | 'disconnected'
  uptime: number
  timestamp: string
  recentErrors?: number
  activeUsers?: number
}

export interface SystemInfo {
  version: string
  environment: string
  nodeVersion: string
  memory: {
    used: number
    total: number
  }
  cpu: {
    usage: number
    cores: number
    loadAverage?: number[]
  }
  platform?: string
  architecture?: string
  uptime?: number
  env?: string
}

export interface MaintenanceStatus {
  id: string
  status: 'ACTIVE' | 'INACTIVE'
  message?: string
  scheduledAt?: string | null
  startedAt?: string | null
  endedAt?: string | null
  enabledBy?: string
  createdAt: string
  updatedAt: string
}

class SystemService {
  /**
   * Get system health status
   */
  async getHealth(): Promise<HealthStatus> {
    const response = await apiClient.get<HealthStatus>('/admin/system/health')
    return response.data
  }

  /**
   * Get system information
   */
  async getSystemInfo(): Promise<SystemInfo> {
    const response = await apiClient.get<SystemInfo>('/admin/system/info')
    return response.data
  }

  /**
   * Get maintenance mode status
   */
  async getMaintenanceStatus(): Promise<MaintenanceStatus> {
    const response = await apiClient.get<MaintenanceStatus>('/admin/maintenance')
    return response.data
  }

  /**
   * Enable maintenance mode
   */
  async enableMaintenance(message?: string): Promise<void> {
    await apiClient.post('/admin/maintenance/enable', { message })
  }

  /**
   * Disable maintenance mode
   */
  async disableMaintenance(): Promise<void> {
    await apiClient.post('/admin/maintenance/disable')
  }

  /**
   * Clear application cache
   */
  async clearCache(): Promise<void> {
    await apiClient.post('/admin/system/clear-cache')
  }

  /**
   * Run database migrations
   */
  async runMigrations(): Promise<{ success: boolean; message: string }> {
    const response = await apiClient.post('/admin/system/migrate')
    return response.data
  }
}

export const systemService = new SystemService()