import { defineStore } from 'pinia'
import { ref, computed } from 'vue'
import { api } from '../composables/useApi'

export const usePlansStore = defineStore('plans', () => {
  const plans = ref([])
  const teachers = ref([])
  const shoppingList = ref([])

  const activePlan = computed(() => plans.value.find(p => p.status === 'active'))
  const pendingPlans = computed(() => plans.value.filter(p => p.status === 'pending'))

  async function loadPlans() {
    const res = await api('/api/oil-plans')
    if (res.ok) plans.value = await res.json()
  }

  async function loadTeachers() {
    const res = await api('/api/teachers')
    if (res.ok) teachers.value = await res.json()
  }

  async function createPlan(healthDesc, teacherId) {
    const res = await api('/api/oil-plans', {
      method: 'POST',
      body: JSON.stringify({ health_desc: healthDesc, teacher_id: teacherId }),
    })
    if (!res.ok) throw new Error('创建失败')
    await loadPlans()
    return res.json()
  }

  async function updatePlan(planId, data) {
    await api(`/api/oil-plans/${planId}`, {
      method: 'PUT',
      body: JSON.stringify(data),
    })
    await loadPlans()
  }

  async function addRecipe(planId, recipeName, ingredients, timesPerMonth) {
    await api(`/api/oil-plans/${planId}/recipes`, {
      method: 'POST',
      body: JSON.stringify({ recipe_name: recipeName, ingredients, times_per_month: timesPerMonth }),
    })
    await loadPlans()
  }

  async function removeRecipe(planId, recipeId) {
    await api(`/api/oil-plans/${planId}/recipes/${recipeId}`, { method: 'DELETE' })
    await loadPlans()
  }

  async function loadShoppingList(planId) {
    const res = await api(`/api/oil-plans/${planId}/shopping-list`)
    if (res.ok) shoppingList.value = await res.json()
  }

  return {
    plans, teachers, shoppingList,
    activePlan, pendingPlans,
    loadPlans, loadTeachers, createPlan, updatePlan,
    addRecipe, removeRecipe, loadShoppingList,
  }
})