ANTOOZA-BACKEND/Admin/Pages/Channel/List/Write.cshtml.cs

using Application.Abstractions.Data;
using MediatR;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.EntityFrameworkCore;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;

namespace Admin.Pages.Channel.List;

public class WriteModel(IMediator mediator, IAppDbContext db) : PageModel
{
    public string QueryString { get; private set; } = "";

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

    public sealed class InputModel
    {
        [DisplayName("회원 ID")]
        [Required(ErrorMessage = "{0}은 필수입니다.")]
        public int MemberID { get; set; }

        [DisplayName("SID")]
        [Required(ErrorMessage = "{0}은 필수입니다.")]
        [StringLength(24, MinimumLength = 24, ErrorMessage = "{0}은 {1}자여야 합니다.")]
        public string SID { get; set; } = default!;

        [DisplayName("이름")]
        [Required(ErrorMessage = "{0}은 필수입니다.")]
        [StringLength(200, ErrorMessage = "{0}은 {1}자 이내로 입력하세요.")]
        public string Name { get; set; } = default!;

        [DisplayName("핸들")]
        [StringLength(30, ErrorMessage = "{0}은 {1}자 이내로 입력하세요.")]
        public string? Handle { get; set; }

        [DisplayName("YouTube 주소")]
        [Required(ErrorMessage = "{0}은 필수입니다.")]
        [StringLength(255, ErrorMessage = "{0}은 {1}자 이내로 입력하세요.")]
        public string YouTubeUrl { get; set; } = default!;

        [DisplayName("후원 수수료(%)")]
        [Range(0, 100, ErrorMessage = "{0}은 {1}~{2} 사이여야 합니다.")]
        public decimal PlatformFeeRate { get; set; } = 0;

        [DisplayName("상점 보상률(%)")]
        [Range(0, 100, ErrorMessage = "{0}은 {1}~{2} 사이여야 합니다.")]
        public decimal StoreCommissionRate { get; set; } = 0;

        [DisplayName("인증 여부")]
        public bool IsVerified { get; set; } = false;

        [DisplayName("사용 여부")]
        public bool IsActive { get; set; } = false;

        [DisplayName("후원 코드")]
        [StringLength(7, MinimumLength = 4, ErrorMessage = "{0}은 {2}~{1}자여야 합니다.")]
        [RegularExpression("^[A-Za-z0-9]{4,7}$", ErrorMessage = "{0}은 영문/숫자만 입력 가능합니다.")]
        public string? DonationCode { get; set; }
    }

    public async Task OnGetAsync(CancellationToken ct)
    {
        QueryString = HttpContext.Request.QueryString.HasValue ? HttpContext.Request.QueryString.Value!.TrimStart('?') : "";

        // 후원 코드 자동 생성 (사용자가 그대로 사용하거나 재생성 버튼으로 갱신)
        Input.DonationCode = await mediator.Send(new GenerateChannelDonationCode.Query(), ct);
    }

    public async Task<IActionResult> OnGetGenerateDonationCodeAsync(CancellationToken ct)
    {
        var code = await mediator.Send(new GenerateChannelDonationCode.Query(), ct);
        return new JsonResult(new { code });
    }

    public async Task<IActionResult> OnGetSearchMemberAsync(string keyword, CancellationToken ct)
    {
        if (string.IsNullOrWhiteSpace(keyword) || keyword.Trim().Length < 1)
        {
            return new JsonResult(Array.Empty<object>());
        }

        var kw = keyword.Trim();

        var isNumeric = int.TryParse(kw, out var numericId);

        var list = await db.Member
            .AsNoTracking()
            .Where(x =>
                (isNumeric && x.ID == numericId) ||
                x.SID.Contains(kw) ||
                x.Email.Contains(kw) ||
                (x.Name != null && x.Name.Contains(kw))
            )
            .OrderByDescending(x => x.ID)
            .Take(10)
            .Select(x => new
            {
                id = x.ID,
                email = x.Email,
                name = x.Name,
                sid = x.SID
            })
            .ToListAsync(ct);

        return new JsonResult(list);
    }

    public async Task<IActionResult> OnPostAsync(CancellationToken ct)
    {
        try
        {
            if (!ModelState.IsValid)
            {
                throw new Exception("유효성 검사에 실패했습니다.");
            }

            await mediator.Send(new CreateChannel.Command(
                Input.MemberID,
                Input.SID,
                Input.Name,
                Input.Handle,
                Input.YouTubeUrl,
                Input.PlatformFeeRate,
                Input.StoreCommissionRate,
                Input.IsVerified,
                Input.IsActive,
                Input.DonationCode
            ), ct);

            TempData["SuccessMessage"] = "채널이 등록되었습니다.";

            return RedirectToPage("/Channel/List/Index");
        }
        catch (Exception e)
        {
            TempData["ErrorMessages"] = e.Message;

            return Page();
        }
    }
}