using FrontOffice.Main.Utilities;
using Microsoft.AspNetCore.Components;
using Microsoft.JSInterop;
using MudBlazor;

namespace FrontOffice.Main.Pages.Profile;

public partial class ChargeCreditWallet : ComponentBase
{
    private bool _isProcessing;
    private long _chargeAmount;
    private string? _paymentResult;
    private string? _pendingReturnUrl;

    private readonly long[] _presetAmounts = { 500_000, 1_000_000, 5_000_000, 10_000_000, 20_000_000, 50_000_000 };

    [SupplyParameterFromQuery(Name = "payment")]
    public string? PaymentQueryParam { get; set; }

    [SupplyParameterFromQuery(Name = "amount")]
    public long? AmountQueryParam { get; set; }

    [SupplyParameterFromQuery(Name = "returnUrl")]
    public string? ReturnUrlQueryParam { get; set; }

    protected override void OnInitialized()
    {
        _paymentResult = PaymentQueryParam;

        if (AmountQueryParam is > 0)
            _chargeAmount = CreditChargeNavigation.NormalizeChargeAmount(AmountQueryParam.Value);

        if (CreditChargeNavigation.IsValidReturnUrl(ReturnUrlQueryParam))
            _pendingReturnUrl = ReturnUrlQueryParam;
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender && !string.IsNullOrEmpty(_pendingReturnUrl))
        {
            await CreditChargeNavigation.SaveReturnUrlAsync(JSRuntime, _pendingReturnUrl);
        }

        await base.OnAfterRenderAsync(firstRender);
    }

    private async Task StartCreditCharge()
    {
        if (_chargeAmount <= 0 || _isProcessing) return;

        _isProcessing = true;
        StateHasChanged();

        try
        {
            if (!string.IsNullOrEmpty(_pendingReturnUrl))
                await CreditChargeNavigation.SaveReturnUrlAsync(JSRuntime, _pendingReturnUrl);
            else
            {
                var storedReturnUrl = await CreditChargeNavigation.GetReturnUrlAsync(JSRuntime);
                if (CreditChargeNavigation.IsValidReturnUrl(storedReturnUrl))
                    _pendingReturnUrl = storedReturnUrl;
            }

            var (success, gatewayUrl, error) = await WalletService.InitiateCreditChargeAsync(_chargeAmount);

            if (success && !string.IsNullOrEmpty(gatewayUrl))
            {
                Navigation.NavigateTo(gatewayUrl, forceLoad: true);
            }
            else
            {
                Snackbar.Add(error ?? "خطا در ایجاد درخواست پرداخت", Severity.Error);
            }
        }
        catch (Exception ex)
        {
            Snackbar.Add($"خطا: {ex.Message}", Severity.Error);
        }
        finally
        {
            _isProcessing = false;
            StateHasChanged();
        }
    }

    private async Task ContinueShoppingAsync()
    {
        var returnUrl = await CreditChargeNavigation.GetReturnUrlAsync(JSRuntime);
        await CreditChargeNavigation.ClearReturnUrlAsync(JSRuntime);

        if (CreditChargeNavigation.IsValidReturnUrl(returnUrl))
            Navigation.NavigateTo(returnUrl!);
    }

    private static string FormatToman(long toman)
        => string.Format("{0:N0} تومان", toman);
}