import { computed } from 'vue'
import { libraryService } from '../services/library.service'
import { subscriptionService } from '../services/subscription.service'
import { useAuthStore } from '../stores/auth'

/**
 * Access Control Composable
 * Check user access to content (subscription or rental)
 */
export function useAccess() {
  const authStore = useAuthStore()

  /**
   * Check if user has access to specific content
   */
  async function checkContentAccess(contentId: string): Promise<{
    hasAccess: boolean
    method?: 'subscription' | 'rental'
    expiresAt?: string
  }> {
    if (!authStore.isAuthenticated) {
      return { hasAccess: false }
    }

    // Check subscription first (instant check)
    if (authStore.hasActiveSubscription()) {
      return { hasAccess: true, method: 'subscription' }
    }

    // Check if we're in development mode
    const useMockData = import.meta.env.VITE_USE_MOCK_DATA === 'true' || import.meta.env.DEV
    
    if (useMockData) {
      // In dev mode without subscription, no access (prompt rental)
      return { hasAccess: false }
    }

    // Real API call to check rental
    try {
      return await libraryService.checkContentAccess(contentId)
    } catch (error) {
      console.error('Failed to check access:', error)
      return { hasAccess: false }
    }
  }

  /**
   * Check if user has active subscription
   */
  const hasActiveSubscription = computed(() => {
    return authStore.hasActiveSubscription()
  })

  /**
   * Get user's subscription tier
   */
  async function getSubscriptionTier() {
    if (!authStore.isAuthenticated) return null

    try {
      const subscription = await subscriptionService.getActiveSubscription()
      return subscription?.tier || null
    } catch {
      return null
    }
  }

  /**
   * Check if content requires subscription
   */
  function requiresSubscription(_content: any): boolean {
    // All content requires subscription or rental unless explicitly free
    return true
  }

  /**
   * Check if content can be rented
   */
  function canRent(_content: any): boolean {
    return !!_content.rentalPrice && _content.rentalPrice > 0
  }

  return {
    checkContentAccess,
    hasActiveSubscription,
    getSubscriptionTier,
    requiresSubscription,
    canRent,
  }
}