import { useQuery } from "@tanstack/react-query";

import { apiClient, Insight, InsightType, InsightPeriod } from "@/lib/api";

export const insightKeys = {

  all: () => ["insights"] as const,

  lists: () => [...insightKeys.all(), "list"] as const,

  list: (filters?: InsightFilters) =>

    [...insightKeys.lists(), filters] as const,

  byType: (type: InsightType) => [...insightKeys.all(), "type", type] as const,

};

interface InsightFilters {

  type?: InsightType;

  period?: InsightPeriod;

  limit?: number;

}

// All insights — for the insights page

export const useInsights = (filters?: InsightFilters) => {

  return useQuery({

    queryKey: insightKeys.list(filters),

    queryFn: () => apiClient.getInsights(filters),

    staleTime: 1000 * 60 * 15,

  });

};

// Single type — for widgets that only care about one insight

// Each call caches independently, so mood log page doesn't blow

// away what the insights page already fetched

export const useInsight = (type: InsightType) => {

  return useQuery({

    queryKey: insightKeys.byType(type),

    queryFn: () =>

      apiClient.getInsights({ type, limit: 1 }).then((res) => res[0] ?? null),

    staleTime: 1000 * 60 * 15,

  });

};