ANTOOZA-BACKEND/Admin/Pages/Payments/Toss/Confirm/View.cshtml.cs

using Application.Abstractions.Messaging;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using System.ComponentModel.DataAnnotations;

namespace Admin.Pages.Payments.Toss.Confirm;

public class ViewModel(IMediator mediator) : PageModel
{
    [BindProperty(SupportsGet = true)]
    public int ID { get; set; }

    [BindProperty]
    public CancelInput Input { get; set; } = new();

    public sealed class CancelInput
    {
        [Display(Name = "취소 요청자")]
        [MaxLength(20)]
        public string? CancelRequester { get; set; }

        [Display(Name = "취소 사유")]
        [MaxLength(200)]
        public string? CancelReason { get; set; }
    }

    public GetTossConfirm.Response? Data { get; set; }

    public async Task<IActionResult> OnGetAsync(CancellationToken ct)
    {
        try
        {
            Data = await mediator.Send(new GetTossConfirm.Query(ID), ct);
            return Page();
        }
        catch (Exception e)
        {
            TempData["ErrorMessages"] = e.Message;
            return RedirectToPage("/Payments/Toss/Confirm/Index");
        }
    }

    public async Task<IActionResult> OnPostCancelAsync(CancellationToken ct)
    {
        var result = await mediator.Send(new CancelTossConfirm.Command(
            ID,
            Input.CancelRequester,
            Input.CancelReason
        ), ct);

        if (result.IsSuccess)
        {
            TempData["SuccessMessage"] = "토스 결제 취소가 완료되었습니다.";
        }
        else
        {
            TempData["ErrorMessages"] = result.Error?.Description ?? "취소에 실패했습니다.";
        }

        return Redirect($"/Payments/Toss/Confirm/View/{ID}{Request.QueryString}");
    }
}