import { defineStore } from 'pinia'
import { computed, ref } from 'vue'
import { useFetchJson } from '@/composable/useFetchJson'
import type { ApiResponse } from '@/types'
import { useRoute } from 'vue-router'

export interface Cart {
  id: number
  name: string
  items: any[]
}

export const useCartStore = defineStore('cart', () => {
  const carts = ref<Cart[]>([])
  const activeCartId = ref<number | null>(null)
  const error = ref<string | null>(null)

  async function fetchCarts() {
    try {
      const res = await useFetchJson<ApiResponse>(
        `/api/v1/restricted/carts/retrieve-carts-info`
      )

      carts.value = res.items
    } catch (e: any) {
      error.value = e?.message ?? 'Error loading carts'
    }
  }

  async function addNewCart(name: string) {
    try {
      error.value = null

      const url = `/api/v1/restricted/carts/add-new-cart`
      const response = await useFetchJson<ApiResponse>(url)

      const newCart: Cart = {
        id: response.items.cart_id,
        name: response.items.name,
        items: []
      }

      carts.value.push(newCart)
      activeCartId.value = newCart.id

      return newCart
    } catch (e: any) {
      error.value = e?.message ?? 'Error creating cart'
    }
  }

  const route = useRoute()
  const amount = ref<number>(1);
  const errorMessage = ref('');

  async function addProduct(product_id: number, count: number) {
    if (!activeCartId.value) {
      errorMessage.value = 'No active cart selected'
      return
    }

    try {
      const res = await useFetchJson<ApiResponse>(
        `/api/v1/restricted/carts/add-product-to-cart?cart_id=${activeCartId.value}&product_id=${product_id}&amount=${count}`
      )

      console.log('fsdfsdfdsfdsfs', res)
    } catch (e: any) {
      errorMessage.value = e?.message ?? 'Error adding product'
    }
  }

  function setActiveCart(id: number | null) {
    activeCartId.value = id

    if (id) {
      localStorage.setItem('activeCartId', String(id))
    } else {
      localStorage.removeItem('activeCartId')
    }
  }

  function initCart() {
    const saved = localStorage.getItem('activeCartId')

    if (saved) {
      activeCartId.value = Number(saved)
    }
  }

  const activeCart = computed(() => {
    return carts.value.find(c => c.cart_id === activeCartId.value)
  })

  return {
    carts,
    activeCartId,
    error,
    errorMessage,
    activeCart,
    setActiveCart,
    addProduct,
    fetchCarts,
    addNewCart,
    initCart,
  }
})