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

namespace Admin.Pages.Crypto.List
{
    public class EditModel(IMediator mediator) : PageModel
    {
        public int CoinID { get; private set; }
        public string? CurrentLogoImage { get; private set; }
        public IReadOnlyList<string> Markets { get; private set; } = [];
        public List<SelectListItem> Categories { get; set; } = [];

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

        public sealed class InputModel
        {
            [Required(ErrorMessage = "심볼은 필수입니다.")]
            [StringLength(30, ErrorMessage = "심볼은 {1}자 이하로 입력하세요.")]
            public string Symbol { get; set; } = null!;

            [Required(ErrorMessage = "한글명은 필수입니다.")]
            [StringLength(200, ErrorMessage = "한글명은 {1}자 이하로 입력하세요.")]
            public string KorName { get; set; } = null!;

            [Required(ErrorMessage = "영문명은 필수입니다.")]
            [StringLength(200, ErrorMessage = "영문명은 {1}자 이하로 입력하세요.")]
            public string EngName { get; set; } = null!;

            [AllowedExtensions("jpg,jpeg,png,gif,webp,svg", ErrorMessage = "이미지 확장자는 jpg, jpeg, png, gif, webp, svg 이어야 합니다.")]
            public IFormFile? LogoImageFile { get; set; }

            public bool DeleteLogoImage { get; set; } = false;

            [StringLength(5000)]
            public string? Description { get; set; }

            [StringLength(100)]
            public string? ContractAddress { get; set; }

            [StringLength(500)]
            [DataType(DataType.Url)]
            public string? WebsiteUrl { get; set; }

            [StringLength(500)]
            [DataType(DataType.Url)]
            public string? WhitepaperUrl { get; set; }

            [StringLength(500)]
            [DataType(DataType.Url)]
            public string? TwitterUrl { get; set; }

            [StringLength(500)]
            [DataType(DataType.Url)]
            public string? TelegramUrl { get; set; }

            public bool IsActive { get; set; } = false;
            public bool IsWarning { get; set; } = false;
            public bool IsNew { get; set; } = false;
            public bool IsDelisted { get; set; } = false;

            public int[] CategoryIDs { get; set; } = [];
        }

        public async Task<IActionResult> OnGetAsync(int id, CancellationToken ct)
        {
            try
            {
                var coin = await mediator.Send(new GetCoin.Query(id), ct);

                CoinID = coin.ID;
                CurrentLogoImage = coin.LogoImage;
                Markets = coin.Markets;

                var categories = await mediator.Send(new GetCryptoCategories.Query(), ct);
                Categories = [..categories.List.Select(c => new SelectListItem(c.Name, c.ID.ToString()))];

                Input = new InputModel
                {
                    Symbol = coin.Symbol,
                    KorName = coin.KorName,
                    EngName = coin.EngName,
                    Description = coin.Description,
                    ContractAddress = coin.ContractAddress,
                    WebsiteUrl = coin.WebsiteUrl,
                    WhitepaperUrl = coin.WhitepaperUrl,
                    TwitterUrl = coin.TwitterUrl,
                    TelegramUrl = coin.TelegramUrl,
                    IsActive = coin.IsActive,
                    IsWarning = coin.IsWarning,
                    IsNew = coin.IsNew,
                    IsDelisted = coin.IsDelisted,
                    CategoryIDs = [..coin.CategoryIDs]
                };

                return Page();
            }
            catch (KeyNotFoundException)
            {
                return NotFound();
            }
        }

        public async Task<IActionResult> OnPostAsync(int id, CancellationToken ct)
        {
            try
            {
                if (!ModelState.IsValid)
                {
                    throw new Exception(ModelState.GetErrorMessages());
                }

                await mediator.Send(new UpdateCoin.Command(
                    id,
                    Input.Symbol,
                    Input.KorName,
                    Input.EngName,
                    Input.LogoImageFile,
                    Input.DeleteLogoImage,
                    Input.Description,
                    Input.ContractAddress,
                    Input.WebsiteUrl,
                    Input.WhitepaperUrl,
                    Input.TwitterUrl,
                    Input.TelegramUrl,
                    Input.IsActive,
                    Input.IsWarning,
                    Input.IsNew,
                    Input.IsDelisted,
                    Input.CategoryIDs
                ), ct);

                TempData["SuccessMessage"] = $"{Input.Symbol} 코인이 수정되었습니다.";

                return RedirectToPage("/Crypto/List/Edit", new { id });
            }
            catch (Exception e)
            {
                TempData["ErrorMessages"] = e.Message;

                return RedirectToPage("/Crypto/List/Edit", new { id });
            }
        }
    }
}