using MangaReader.Core.HttpService;
using System.Text;
using System.Text.Json;

namespace MangaReader.Core.Sources.MangaDex.Api
{
    public class MangaDexClient(IHttpService httpService) : IMangaDexClient
    {
        private static readonly JsonSerializerOptions _jsonSerializerOptions;

        static MangaDexClient()
        {
            _jsonSerializerOptions = new()
            {
                PropertyNameCaseInsensitive = true
            };

            _jsonSerializerOptions.Converters.Add(new MangaDexResponseConverter());
            _jsonSerializerOptions.Converters.Add(new MangaDexEntityConverter());
        }

        private async Task<MangaDexResponse?> GetAsync(string url, CancellationToken cancellationToken)
        {
            string response = await httpService.GetStringAsync(url, cancellationToken);

            return JsonSerializer.Deserialize<MangaDexResponse>(response, _jsonSerializerOptions);
        }

        public async Task<MangaDexResponse?> SearchMangaByTitleAsync(string title, CancellationToken cancellationToken)
        {
            string normalizedKeyword = GetNormalizedKeyword(title);

            return await GetAsync($"https://api.mangadex.org/manga?title={normalizedKeyword}&limit=5", cancellationToken);
        }

        public async Task<MangaDexResponse?> SearchMangaByAuthorAsync(string author, CancellationToken cancellationToken)
        {
            string normalizedKeyword = GetNormalizedKeyword(author);

            return await GetAsync($"https://api.mangadex.org/manga?author={normalizedKeyword}&limit=5", cancellationToken);
        }

        public async Task<MangaDexResponse?> SearchMangaByGroupAsync(string group, CancellationToken cancellationToken)
        {
            string normalizedKeyword = GetNormalizedKeyword(group);

            return await GetAsync($"https://api.mangadex.org/manga?group={normalizedKeyword}&limit=5", cancellationToken);
        }

        protected static string GetNormalizedKeyword(string keyword)
        {
            return keyword.ToLowerInvariant().Normalize(NormalizationForm.FormD);
        }

        public async Task<MangaDexResponse?> GetMangaAsync(Guid mangaGuid, CancellationToken cancellationToken)
        {
            return await GetAsync($"https://api.mangadex.org/manga/{mangaGuid}?includes[]=artist&includes[]=author&includes[]=cover_art", cancellationToken);
        }

        public async Task<MangaDexResponse?> GetFeedAsync(Guid mangaGuid, CancellationToken cancellationToken)
        {
            return await GetAsync($"https://api.mangadex.org/manga/{mangaGuid}/feed?translatedLanguage[]=en&limit=96&includes[]=scanlation_group&includes[]=user&order[volume]=desc&order[chapter]=desc&offset=0&contentRating[]=safe&contentRating[]=suggestive&contentRating[]=erotica&contentRating[]=pornographic", cancellationToken);
        }

        public async Task<MangaDexChapterResponse?> GetChapterAsync(Guid chapterGuid, CancellationToken cancellationToken)
        {
            string url = $"https://api.mangadex.org/at-home/server/{chapterGuid}?forcePort443=false";
            string response = await httpService.GetStringAsync(url, cancellationToken);

            return JsonSerializer.Deserialize<MangaDexChapterResponse>(response, _jsonSerializerOptions);
        }
    }
}