using System.Net.Http.Headers;
using System.Text.Json;
using System.Text.Json.Serialization;
using YandexMusic.API.Converters;
using YandexMusic.API.Models.Common;
using YandexMusic.API.Requests.Common;

namespace YandexMusic.API.Requests;

/// <summary>Базовый класс для запросов к API Яндекс Музыки (api.music.yandex.net).</summary>
internal abstract class YMusicRequestBuilder<TResponse, TParams> : YJsonRequestBuilder<TResponse, TParams>
{
    protected override string BaseUrl => YConstants.Endpoints.MusicUrl;

    protected YMusicRequestBuilder(YandexMusicApi api) : base(api) { }

    protected override void SetCustomHeaders(HttpRequestHeaders headers)
    {
        base.SetCustomHeaders(headers);
        headers.Add("X-Yandex-Music-Client", Storage.DeviceId);
    }

    protected override async Task<TResponse?> DeserializeAsync(HttpResponseMessage response)
    {
        var json = await response.Content.ReadAsStringAsync();

        var options = new JsonSerializerOptions
        {
            PropertyNameCaseInsensitive = true,
            Converters = {
                new JsonStringEnumConverter(JsonNamingPolicy.KebabCaseLower),
                new IntToStringConverter(),
                new StringToIntConverter(),
                new YExecutionContextConverter(Api, Storage),
            }
        };

        if (!response.IsSuccessStatusCode)
        {
            var error = JsonSerializer.Deserialize<YErrorResponse>(json, options);
            throw error ?? new Exception($"Ошибка HTTP {response.StatusCode}: {json}");
        }

        try
        {
            var uResponse = JsonSerializer.Deserialize<YResponse<TResponse>>(json, options);
            if (uResponse == null) return default;
            return uResponse.Result;
        }
        catch (Exception ex)
        {
            throw new Exception($"Ошибка десериализации: {ex.Message}\nJSON: {json}", ex);
        }
    }
}