// ============================================================
// CouponProvider — 券功能 Riverpod Providers
// ============================================================

import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../../../core/services/coupon_service.dart';

/// CouponApiService Provider（DI 入口）
final couponServiceProvider = Provider<CouponApiService>((ref) {
  return CouponApiService();
});

// ── Featured Coupons ──────────────────────────────────────────

final featuredCouponsProvider = FutureProvider.autoDispose((ref) async {
  return ref.read(couponServiceProvider).getFeaturedCoupons();
});

// ── My Holdings ───────────────────────────────────────────────

class HoldingsParams {
  final String? status;
  final int page;
  final int limit;
  const HoldingsParams({this.status, this.page = 1, this.limit = 20});
}

final myHoldingsProvider =
    FutureProvider.autoDispose.family<dynamic, HoldingsParams>((ref, params) async {
  return ref.read(couponServiceProvider).getMyHoldings(
        status: params.status,
        page: params.page,
        limit: params.limit,
      );
});

// ── Holdings Summary ──────────────────────────────────────────

final holdingsSummaryProvider = FutureProvider.autoDispose((ref) async {
  return ref.read(couponServiceProvider).getHoldingsSummary();
});

// ── Coupon Detail ─────────────────────────────────────────────

final couponDetailProvider =
    FutureProvider.autoDispose.family<dynamic, String>((ref, couponId) async {
  return ref.read(couponServiceProvider).getCouponDetail(couponId);
});