All files / src/hooks useCustomerSegments.ts

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/**
 * useCustomerSegments Hook
 *
 * Fetches customer segment data for insights visualization.
 */

"use client";

import { useState, useEffect, useCallback } from "react";

export interface CustomerSegments {
  high: { count: number; revenue: number; avgOrderValue: number };
  medium: { count: number; revenue: number; avgOrderValue: number };
  low: { count: number; revenue: number; avgOrderValue: number };
  dormant: { count: number; lastOrderDaysAgo: number };
}

interface UseCustomerSegmentsResult {
  segments: CustomerSegments | null;
  isLoading: boolean;
  error: Error | null;
  refetch: () => Promise<void>;
}

const defaultSegments: CustomerSegments = {
  high: { count: 0, revenue: 0, avgOrderValue: 0 },
  medium: { count: 0, revenue: 0, avgOrderValue: 0 },
  low: { count: 0, revenue: 0, avgOrderValue: 0 },
  dormant: { count: 0, lastOrderDaysAgo: 0 },
};

export function useCustomerSegments(): UseCustomerSegmentsResult {
  const [segments, setSegments] = useState<CustomerSegments | null>(null);
  const [isLoading, setIsLoading] = useState(true);
  const [error, setError] = useState<Error | null>(null);

  const fetchSegments = useCallback(async () => {
    try {
      setIsLoading(true);
      setError(null);

      const response = await fetch("/api/admin/analytics/segments");

      if (!response.ok) {
        throw new Error(`Failed to fetch customer segments: ${response.status}`);
      }

      const result = await response.json();

      if (result.success && result.data) {
        setSegments(result.data);
      } else {
        setSegments(defaultSegments);
      }
    } catch (err) {
      setError(err instanceof Error ? err : new Error("Unknown error"));
      setSegments(defaultSegments);
    } finally {
      setIsLoading(false);
    }
  }, []);

  useEffect(() => {
    fetchSegments();
  }, [fetchSegments]);

  return {
    segments,
    isLoading,
    error,
    refetch: fetchSegments,
  };
}

export default useCustomerSegments;