using SharedKernel.Extensions;
using MediatR;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;

namespace Admin.Pages.Store.Game;

/// <summary>
/// 게임별 인앱 상품 SKU 정가 카탈로그 관리.
/// 파트너 결제 보고(/v1/purchases) 금액 검증용 — 보고가가 정가와 다르면 불일치 flag.
/// </summary>
public class CatalogModel(IMediator mediator) : PageModel
{
    public Application.Features.Admin.Store.GameCatalog.GetByGame.Response? Data { get; private set; }

    [BindProperty]
    public AddInput Add { get; set; } = new();

    public sealed class AddInput
    {
        public int GameID { get; set; }

        [DisplayName("SKU(상품 ID)")]
        [Required(ErrorMessage = "{0}은(는) 필수입니다.")]
        [StringLength(100, ErrorMessage = "{0}은(는) {1}자 이하로 입력하세요.")]
        public string ProductID { get; set; } = null!;

        [DisplayName("정가(원)")]
        [Range(1, int.MaxValue, ErrorMessage = "{0}은(는) 1 이상이어야 합니다.")]
        public int Price { get; set; }
    }

    public async Task OnGetAsync(int id, CancellationToken ct)
    {
        var result = await mediator.Send(new Application.Features.Admin.Store.GameCatalog.GetByGame.Query(id), ct);

        if (result.IsFailure)
        {
            TempData["ErrorMessages"] = result.Error.Description;
            return;
        }

        Data = result.Value;
        Add.GameID = id;
    }

    public async Task<IActionResult> OnPostAddAsync(CancellationToken ct)
    {
        if (!ModelState.IsValid)
        {
            TempData["ErrorMessages"] = ModelState.GetErrorMessages();
            return Redirect($"/Store/Game/Catalog/{Add.GameID}");
        }

        var result = await mediator.Send(new Application.Features.Admin.Store.GameCatalog.Create.Command(Add.GameID, Add.ProductID, Add.Price), ct);

        if (result.IsFailure)
        {
            TempData["ErrorMessages"] = result.Error.Description;
        }
        else
        {
            TempData["SuccessMessage"] = $"SKU {Add.ProductID} 가 등록되었습니다.";
        }

        return Redirect($"/Store/Game/Catalog/{Add.GameID}");
    }

    public async Task<IActionResult> OnPostUpdateAsync(int gameID, int id, int price, bool isActive, CancellationToken ct)
    {
        var result = await mediator.Send(new Application.Features.Admin.Store.GameCatalog.Update.Command(id, price, isActive), ct);

        if (result.IsFailure)
        {
            TempData["ErrorMessages"] = result.Error.Description;
        }
        else
        {
            TempData["SuccessMessage"] = "카탈로그 항목이 수정되었습니다.";
        }

        return Redirect($"/Store/Game/Catalog/{gameID}");
    }

    public async Task<IActionResult> OnPostDeleteAsync(int gameID, int id, CancellationToken ct)
    {
        var result = await mediator.Send(new Application.Features.Admin.Store.GameCatalog.Delete.Command(id), ct);

        if (result.IsFailure)
        {
            TempData["ErrorMessages"] = result.Error.Description;
        }
        else
        {
            TempData["SuccessMessage"] = "카탈로그 항목이 삭제되었습니다.";
        }

        return Redirect($"/Store/Game/Catalog/{gameID}");
    }
}