import { computed } from 'vue'
import { useI18n } from 'vue-i18n'
import { pluginManager } from '@/core/plugin-manager'
import appConfig from '@/app.config'

interface NavigationItem {
  name: string
  href: string
  icon?: string
  requiresAuth?: boolean
}

/**
 * Composable for dynamic navigation based on enabled modules
 */
export function useModularNavigation() {
  const { t } = useI18n()

  /**
   * Get navigation items for enabled modules
   */
  const navigation = computed<NavigationItem[]>(() => {
    const items: NavigationItem[] = []

    // Always include home
    items.push({ name: t('nav.home'), href: '/', requiresAuth: true })

    // Add navigation items based on enabled modules
    if (appConfig.modules.events.enabled) {
      items.push({ 
        name: t('nav.events'), 
        href: '/events', 
        requiresAuth: true 
      })
    }

    if (appConfig.modules.market.enabled) {
      items.push({ 
        name: t('nav.market'), 
        href: '/market', 
        requiresAuth: true 
      })
    }

    if (appConfig.modules.chat.enabled) {
      items.push({ 
        name: t('nav.chat'), 
        href: '/chat', 
        requiresAuth: true 
      })
    }

    return items
  })

  /**
   * Get dropdown menu items for authenticated users
   */
  const userMenuItems = computed<NavigationItem[]>(() => {
    const items: NavigationItem[] = []

    // Events module items
    if (appConfig.modules.events.enabled) {
      items.push({ 
        name: 'My Tickets', 
        href: '/my-tickets', 
        icon: 'Ticket',
        requiresAuth: true 
      })
    }

    // Market module items  
    if (appConfig.modules.market.enabled) {
      items.push({ 
        name: 'Market Dashboard', 
        href: '/market-dashboard', 
        icon: 'Store',
        requiresAuth: true 
      })
    }

    // Base module items (always available)
    items.push({ 
      name: 'Relay Hub Status', 
      href: '/relay-hub-status', 
      icon: 'Activity',
      requiresAuth: true 
    })

    return items
  })

  /**
   * Check if a module is enabled and installed
   */
  const isModuleAvailable = (moduleName: string): boolean => {
    return appConfig.modules[moduleName as keyof typeof appConfig.modules]?.enabled && 
           pluginManager.isInstalled(moduleName)
  }

  return {
    navigation,
    userMenuItems,
    isModuleAvailable
  }
}