import 'package:flutter/foundation.dart';

/// Normalized purchase status reported by the store.
enum StorePurchaseStatus { pending, purchased, restored, canceled, error }

/// Store-neutral representation of a catalog product queried from Google Play.
@immutable
class StoreProduct {
  final String id;
  final String title;
  final String description;
  final String price;
  final double rawPrice;
  final String currencyCode;
  final String currencySymbol;
  final bool isSubscription;

  const StoreProduct({
    required this.id,
    required this.title,
    required this.description,
    required this.price,
    required this.rawPrice,
    required this.currencyCode,
    this.currencySymbol = '',
    this.isSubscription = false,
  });

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is StoreProduct &&
          runtimeType == other.runtimeType &&
          id == other.id &&
          price == other.price &&
          currencyCode == other.currencyCode;

  @override
  int get hashCode => id.hashCode ^ price.hashCode ^ currencyCode.hashCode;
}

/// Store-neutral purchase transaction emitted by the billing stream.
@immutable
class StorePurchase {
  final String purchaseId;
  final String productId;
  final StorePurchaseStatus status;
  final String transactionDate;
  final String? purchaseToken;
  final String? purchaseTokenHash;
  final bool pendingCompletePurchase;
  final String? errorMessage;
  final Object? originalPayload;

  const StorePurchase({
    required this.purchaseId,
    required this.productId,
    required this.status,
    required this.transactionDate,
    this.purchaseToken,
    this.purchaseTokenHash,
    this.pendingCompletePurchase = false,
    this.errorMessage,
    this.originalPayload,
  });

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is StorePurchase &&
          runtimeType == other.runtimeType &&
          purchaseId == other.purchaseId &&
          productId == other.productId &&
          status == other.status &&
          purchaseTokenHash == other.purchaseTokenHash;

  @override
  int get hashCode =>
      purchaseId.hashCode ^
      productId.hashCode ^
      status.hashCode ^
      purchaseTokenHash.hashCode;
}

/// Failure details encountered during store queries or operations.
@immutable
class BillingFailure {
  final String code;
  final String message;
  final Object? details;

  const BillingFailure({
    required this.code,
    required this.message,
    this.details,
  });

  @override
  String toString() => 'BillingFailure(code: $code, message: $message)';
}