using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Windows.Services.Store;
using Wino.Core.Domain.Interfaces;
using Wino.Core.Domain.Models.Store;

namespace Wino.Core.UWP.Services
{
    public class StoreManagementService : IStoreManagementService
    {
        private StoreContext CurrentContext { get; }

        private readonly Dictionary<StoreProductType, string> productIds = new Dictionary<StoreProductType, string>()
        {
            { StoreProductType.UnlimitedAccounts, "UnlimitedAccounts" }
        };

        private readonly Dictionary<StoreProductType, string> skuIds = new Dictionary<StoreProductType, string>()
        {
            { StoreProductType.UnlimitedAccounts, "9P02MXZ42GSM" }
        };

        public StoreManagementService()
        {
            CurrentContext = StoreContext.GetDefault();
        }

        public async Task<bool> HasProductAsync(StoreProductType productType)
        {
            var productKey = productIds[productType];
            var appLicense = await CurrentContext.GetAppLicenseAsync();

            if (appLicense == null)
                return false;

            // Access the valid licenses for durable add-ons for this app.
            foreach (KeyValuePair<string, StoreLicense> item in appLicense.AddOnLicenses)
            {
                StoreLicense addOnLicense = item.Value;

                if (addOnLicense.InAppOfferToken == productKey)
                {
                    return addOnLicense.IsActive;
                }
            }

            return false;
        }

        public async Task<Domain.Enums.StorePurchaseResult> PurchaseAsync(StoreProductType productType)
        {
            if (await HasProductAsync(productType))
                return Domain.Enums.StorePurchaseResult.AlreadyPurchased;
            else
            {
                var productKey = skuIds[productType];

                var result = await CurrentContext.RequestPurchaseAsync(productKey);

                switch (result.Status)
                {
                    case StorePurchaseStatus.Succeeded:
                        return Domain.Enums.StorePurchaseResult.Succeeded;
                    case StorePurchaseStatus.AlreadyPurchased:
                        return Domain.Enums.StorePurchaseResult.AlreadyPurchased;
                    default:
                        return Domain.Enums.StorePurchaseResult.NotPurchased;
                }
            }
        }
    }
}