'use client';

import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
import * as subscriptionApi from '../api/subscription';
import { apiClient } from '../api/client';

/**
 * Adaptador del catálogo despacho (`/planes/despacho`) al shape legacy que espera
 * `/configuracion/suscripcion`: `{ plan, frequency, amount }[]`. El catálogo
 * despacho tiene precios separados `monthly` / `firstYear` / `renewal` que aquí
 * proyectamos como dos filas (`monthly` y `annual`) por plan, usando `firstYear`
 * como precio anual cuando existe (precio "vitrina" de venta nueva).
 *
 * Mantiene la API pública del page sin migración invasiva — cuando se rehaga la
 * página para soportar dualidad de precios firstYear/renewal nativamente, este
 * adapter se puede borrar.
 */
interface DespachoPlanLimits {
  plan: string;
  monthly: number | null;
  firstYear: number | null;
  renewal: number | null;
  permiteMonthly: boolean;
}

interface PlanPriceRow {
  plan: string;
  frequency: 'monthly' | 'annual';
  amount: number;
}

export function usePlans() {
  return useQuery<PlanPriceRow[]>({
    queryKey: ['despacho-catalogo-as-plans'],
    queryFn: async () => {
      const res = await apiClient.get<{ data: DespachoPlanLimits[] }>('/planes/despacho');
      const rows: PlanPriceRow[] = [];
      for (const p of res.data.data) {
        if (p.permiteMonthly && p.monthly != null) {
          rows.push({ plan: p.plan, frequency: 'monthly', amount: p.monthly });
        }
        const annual = p.firstYear ?? p.renewal;
        if (annual != null) {
          rows.push({ plan: p.plan, frequency: 'annual', amount: annual });
        }
      }
      return rows;
    },
    staleTime: 5 * 60 * 1000,
  });
}

export function useSubscription(tenantId: string | undefined) {
  return useQuery({
    queryKey: ['subscription', tenantId],
    queryFn: () => subscriptionApi.getSubscription(tenantId!),
    enabled: !!tenantId,
    staleTime: 5 * 60 * 1000,
  });
}

export function usePaymentHistory(tenantId: string | undefined) {
  return useQuery({
    queryKey: ['payments', tenantId],
    queryFn: () => subscriptionApi.getPaymentHistory(tenantId!),
    enabled: !!tenantId,
    staleTime: 60 * 1000,
  });
}

export function useGeneratePaymentLink() {
  return useMutation({
    mutationFn: (tenantId: string) => subscriptionApi.generatePaymentLink(tenantId),
  });
}

export function useMarkAsPaid() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: ({ tenantId, amount }: { tenantId: string; amount: number }) =>
      subscriptionApi.markAsPaid(tenantId, amount),
    onSuccess: (_, { tenantId }) => {
      queryClient.invalidateQueries({ queryKey: ['subscription', tenantId] });
      queryClient.invalidateQueries({ queryKey: ['payments', tenantId] });
    },
  });
}

// ============================================================================
// Self-serve hooks (actúan sobre el tenant del usuario autenticado)
// ============================================================================

export function useStartTrial() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: subscriptionApi.startTrial,
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['subscription'] });
    },
  });
}

export function useSubscribeMe() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: subscriptionApi.subscribeMe,
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['subscription'] });
    },
  });
}

export function useChangeMyPlan() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: subscriptionApi.changeMyPlan,
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['subscription'] });
    },
  });
}

export function useCancelMySubscription() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: subscriptionApi.cancelMySubscription,
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['subscription'] });
    },
  });
}

export function useUpgradeMe() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: (plan: string) => subscriptionApi.upgradeMe(plan),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['subscription'] });
    },
  });
}

export function useCancelPendingUpgrade() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: subscriptionApi.cancelPendingUpgrade,
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['subscription'] });
    },
  });
}

export function useReactivateMe() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: subscriptionApi.reactivateMe,
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['subscription'] });
    },
  });
}