import { computed, ref } from 'vue';
import { defineStore } from 'pinia';
import { LEAD_STATUSES, type LeadStatus } from '../composables/leadStatuses';
import { type ApiLeadStatus, listLeadStatuses } from '../api/leadStatuses';

/**
 * Pinia store для статусов воронки. Заменяет static-снапшот `LEAD_STATUSES`
 * (composables/leadStatuses.ts) на live-данные из API при наличии auth.
 *
 * Initial state — snapshot (UI работает сразу без fetch'а). `load()` вызывается
 * из DealsView/KanbanView на mount и replace'ит snapshot реальными данными.
 * На fail — снапшот остаётся.
 */
export const useLeadStatusesStore = defineStore('leadStatuses', () => {
    const statuses = ref<LeadStatus[]>([...LEAD_STATUSES]);
    const loading = ref(false);
    const fetchError = ref(false);
    const loaded = ref(false);

    const bySlug = computed(() => {
        const map = new Map<string, LeadStatus>();
        statuses.value.forEach((s) => map.set(s.slug, s));
        return map;
    });

    function findBySlug(slug: string): LeadStatus | null {
        return bySlug.value.get(slug) ?? null;
    }

    async function load(force = false): Promise<void> {
        if (loaded.value && !force) return;
        loading.value = true;
        fetchError.value = false;
        try {
            const apiList = await listLeadStatuses();
            statuses.value = apiList.map(mapApi);
            loaded.value = true;
        } catch {
            fetchError.value = true;
            // Snapshot остаётся как fallback.
        } finally {
            loading.value = false;
        }
    }

    return { statuses, loading, fetchError, loaded, bySlug, findBySlug, load };
});

function mapApi(api: ApiLeadStatus): LeadStatus {
    return {
        slug: api.slug,
        nameRu: api.name_ru,
        isSystem: api.is_system,
        sortOrder: api.sort_order,
        colorHex: api.color_hex,
    };
}