import { defineStore } from 'pinia'
import { ref } from 'vue'

import { useApi } from '../composables/useApi.js'
import { useAsyncAction } from '../composables/useAsyncAction.js'
import { toast } from '../utils/toast.js'

// Backs the creator/membership review queue (#388 E4). Confirm-only: accepting
// ADDS A SOURCE to the artist that already has the other channel — it never
// merges two artists. Adding a source is trivially undone; a wrong merge
// silently mixes two creators' work with nothing left to separate them by.
export const useMembershipSuggestionsStore = defineStore('membershipSuggestions', () => {
  const api = useApi()
  const suggestions = ref([])
  const { loading, error, run } = useAsyncAction({ errorAs: 'message' })

  async function load () {
    await run(async () => {
      const body = await api.get('/api/sources/membership-suggestions')
      suggestions.value = body.items || []
    })
  }

  async function accept (id) {
    try {
      const res = await api.post(`/api/sources/membership-suggestions/${id}/accept`, {})
      suggestions.value = suggestions.value.filter(s => s.id !== id)
      toast({
        text: res.already_linked ? 'Already linked' : 'Channel added to this creator',
        type: 'success'
      })
    } catch (e) {
      toast({ text: `Link failed: ${e.message}`, type: 'error' })
    }
  }

  async function dismiss (id) {
    try {
      await api.post(`/api/sources/membership-suggestions/${id}/dismiss`, {})
      suggestions.value = suggestions.value.filter(s => s.id !== id)
    } catch (e) {
      toast({ text: `Dismiss failed: ${e.message}`, type: 'error' })
    }
  }

  async function rescan () {
    await api.post('/api/sources/membership-suggestions/rescan', {})
    await load()
  }

  return { suggestions, loading, error, load, accept, dismiss, rescan }
})