import { defineStore } from 'pinia'

export enum BookRecommendationStatusEnum {
  PENDING = 'PENDING',
  REJECTED = 'REJECTED',
  ACTIVE = 'ACTIVE',
  COMPLETED = 'COMPLETED',
}

export interface BookRecommendation {
  id: number
  book_name: string
  author: string
  description: string
  isbn: string
  pages: number
  recommended_by?: number
  recommender?: {
    ulid: number
    name: string
    email: string
    avatar: string
  }
  votes?: Vote[]
  status: BookRecommendationStatusEnum
  cover_image?: string
  published_at?: string
}

export interface Vote {
  book_recommendation_id: number
  id: number
  user_id: number
  created_at: string
  updated_at: string
}

export const useBookRecommendationStore = defineStore('bookRecommendations', () => {
  const recommendations = ref<BookRecommendation[]>([])

  const statusOptions = [
    {
      name: 'Ausstehend',
      value: BookRecommendationStatusEnum.PENDING,
      color: 'orange',
    },
    {
      name: 'Abgelehnt',
      value: BookRecommendationStatusEnum.REJECTED,
      color: 'red',
    },
    {
      name: 'Aktiv',
      value: BookRecommendationStatusEnum.ACTIVE,
      color: 'green',
    },
    {
      name: 'Abgeschlossen',
      value: BookRecommendationStatusEnum.COMPLETED,
      color: 'primary',

    },
  ]

  // Fetch all book recommendations
  const { refresh: fetchRecommendations, status: fetchRecommendationsStatus } = useFetch<BookRecommendation[]>('book-recommendations?with=recommender,votes', {
    immediate: false,
    onResponse({ response }) {
      if (response.status === 200) {
        recommendations.value = response._data
      }
    },
  })

  const { refresh: fetchActiveRecommendations, status: fetchActiveRecommendationsStatus } = useFetch<BookRecommendation[]>('book-recommendations?with=recommender,votes&status=ACTIVE', {
    immediate: false,
    onResponse({ response }) {
      if (response.status === 200) {
        recommendations.value = response._data
      }
    },
  })

  const updateRecommendationWS = async (data: Partial<BookRecommendation>) => {
    // This data can be Partial, the id should always be present. We need to only update the properties that are present in the data object.
    // We also have a special case for activeRecommendations, in this case we could have a new recommendation that needs to be added to the list. This should only happen if the status is ACTIVE.
    // If the Status is not ACTIVE, we need to remove the recommendation from the list.
    const index = recommendations.value.findIndex(r => r.id === data.id)
    if (index !== -1) {
      recommendations.value[index] = { ...recommendations.value[index], ...data }
    }
    switch (data.status) {
      case BookRecommendationStatusEnum.ACTIVE:
        const activeIndex = recommendations.value.findIndex(r => r.id === data.id)
        if (activeIndex === -1) {
          await createRecommendationWS(data)
        }
        break
      default:
        const inactiveIndex = recommendations.value.findIndex(r => r.id === data.id)
        if (inactiveIndex !== -1) {
          recommendations.value.splice(inactiveIndex, 1)
        }
        break
    }
  }

  const deleteRecommendationWS = async (data: Partial<BookRecommendation>) => {
    const index = recommendations.value.findIndex(r => r.id === data.id)
    if (index !== -1) {
      recommendations.value.splice(index, 1)
    }
  }

  const createRecommendationWS = async (data: Partial<BookRecommendation>) => {
    // Here we need to get the missing with data from the server
    await useFetch<BookRecommendation>(`book-recommendations/${data.id}?with=recommender,votes`, {
      onResponse({ response }) {
        if (response.status === 200) {
          recommendations.value.push(response._data)
        }
      },
    })
  }

  function resetRecommendations() {
    recommendations.value = []
  }

  return {
    recommendations,
    resetRecommendations,
    updateRecommendationWS,
    deleteRecommendationWS,
    createRecommendationWS,
    statusOptions,
    fetchRecommendations,
    fetchRecommendationsStatus,
    fetchActiveRecommendations,
    fetchActiveRecommendationsStatus,
  }
})

if (import.meta.hot) {
  import.meta.hot.accept(acceptHMRUpdate(useBookRecommendationStore, import.meta.hot))
}