import { defineStore } from 'pinia'

export const useCartStore = defineStore('cart', {
  state: () => ({
    items: []
  }),
  getters: {
    cartCount: (state) => state.items.reduce((sum, item) => sum + item.quantity, 0),
    cartTotal: (state) => state.items.reduce((sum, item) => sum + (item.price * item.quantity), 0)
  },
  actions: {
    addItem(product) {
      const existing = this.items.find(i => i.id === product.id)
      if (existing) {
        existing.quantity = product.quantity
      } else {
        this.items.push({
          id: product.id,
          name: product.name,
          img: product.img,
          price: product.price,
          quantity: product.quantity,
          measuring_unit: product.measuring_unit || 'Unidad'
        })
      }
    },
    removeItem(itemId) {
      const index = this.items.findIndex(i => i.id === itemId)
      if (index > -1) {
        this.items.splice(index, 1)
      }
    },
    updateQuantity({ itemId, quantity }) {
      const item = this.items.find(i => i.id === itemId)
      if (item) {
        item.quantity = quantity
      }
    },
    clearCart() {
      this.items = []
    }
  }
})