import { defineStore } from 'pinia'
import { ref, computed } from 'vue'
import { kappa } from '@/services/kappa-api'
import type { KappaUserStory, KappaLogbookEntry, KappaPlanningEntry } from '@/types/kappa'

export const useWorkItemsStore = defineStore('workitems', () => {
  const creating = ref(false)
  const loading = ref(false)
  const error = ref<string | null>(null)

  const userStories = ref<KappaUserStory[]>([])
  const logbooks = ref<KappaLogbookEntry[]>([])
  const plannings = ref<KappaPlanningEntry[]>([])

  const totalHUs = computed(() => userStories.value.length)
  const inProgressHUs = computed(() =>
    userStories.value.filter(us =>
      us.status && ['in_progress', 'doing', 'wip', 'active'].includes(us.status.toLowerCase())
    ).length
  )
  const totalSessions = computed(() => logbooks.value.length)

  async function createUserStory(story: KappaUserStory): Promise<KappaUserStory | null> {
    creating.value = true
    error.value = null
    try {
      const result = await kappa.createUserStory(story)
      userStories.value.push(result)
      return result
    } catch (e: any) {
      error.value = e.message
      return null
    } finally {
      creating.value = false
    }
  }

  async function fetchWorkItems(initiativeId?: number) {
    loading.value = true
    error.value = null
    try {
      const [stories, logs, plans] = await Promise.all([
        kappa.getUserStories(initiativeId),
        kappa.getLogbooks(initiativeId),
        kappa.getPlannings(initiativeId),
      ])
      userStories.value = Array.isArray(stories) ? stories : (stories.results ?? [])
      logbooks.value = Array.isArray(logs) ? logs : (logs.results ?? [])
      plannings.value = Array.isArray(plans) ? plans : (plans.results ?? [])
    } catch (e: any) {
      error.value = e.message
    } finally {
      loading.value = false
    }
  }

  return {
    creating,
    loading,
    error,
    userStories,
    logbooks,
    plannings,
    totalHUs,
    inProgressHUs,
    totalSessions,
    createUserStory,
    fetchWorkItems,
  }
})