using System;
using UnityEngine;
using UnityEngine.Purchasing;

namespace ShiroginSDK.Runtime.Modules.Events
{
    public static partial class ShiroginEvents
    {
        public static class IAP
        {
            /// <summary>
            ///     Fired when an in-app purchase is successfully completed.
            ///     Contains both logical and analytical data for tracking and rewards.
            /// </summary>
            [Serializable]
            public class PurchaseCompletedEvent
            {
                public int Quantity;
                public string TransactionId;
                public string PaymentType;
                public Product Product;
                public DateTime Timestamp;

                public PurchaseCompletedEvent(Product product, int quantity = 1)
                {
                    Product = product;
                    Quantity = quantity;

                    TransactionId = product?.transactionID ?? Guid.NewGuid().ToString();
                    PaymentType = Application.platform == RuntimePlatform.Android
                        ? "Google Play"
                        : "App Store";

                    Timestamp = DateTime.UtcNow;
                }

                // Computed properties
                public string ItemId => Product?.definition?.id ?? "undefined";
                public string ItemName => Product?.metadata?.localizedTitle ?? "undefined";
                public string ItemCategory => Product?.definition?.type.ToString() ?? "unknown";
                public double Price => (double)(Product?.metadata?.localizedPrice ?? 0);
                public double Revenue => Price * Quantity;
                public string Currency => Product?.metadata?.isoCurrencyCode ?? "USD";

                public override string ToString()
                {
                    return
                        $"[PurchaseCompletedEvent] {ItemName} ({ItemId}) | {Price:F2} {Currency} x{Quantity} | {PaymentType} | {TransactionId}";
                }
            }

            /// <summary>
            ///     Fired when an in-app purchase fails.
            ///     Used for error handling, analytics, and failure reporting.
            /// </summary>
            [Serializable]
            public class PurchaseFailedEvent
            {
                public string Error;
                public string FailureReason;
                public string PaymentType;
                public Product Product;
                public DateTime Timestamp;

                public PurchaseFailedEvent(Product product, string error, string reason = "")
                {
                    Product = product;
                    Error = error;
                    FailureReason = reason;

                    PaymentType = Application.platform == RuntimePlatform.Android
                        ? "Google Play"
                        : "App Store";

                    Timestamp = DateTime.UtcNow;
                }

                // Computed properties
                public string ItemId => Product?.definition?.id ?? "undefined";
                public string ItemName => Product?.metadata?.localizedTitle ?? "undefined";
                public string ItemCategory => Product?.definition?.type.ToString() ?? "unknown";
                public double Price => (double)(Product?.metadata?.localizedPrice ?? 0);
                public string Currency => Product?.metadata?.isoCurrencyCode ?? "USD";

                public override string ToString()
                {
                    return
                        $"[PurchaseFailedEvent] {ItemName} ({ItemId}) | {Price:F2} {Currency} | Error={Error} | Reason={FailureReason}";
                }
            }
        }
    }
}