using System.Net;

namespace MegghysAPI
{
    public static class Utils
    {
        public static readonly HttpClient _client = new(new HttpClientHandler()
        {
            AutomaticDecompression = DecompressionMethods.All,
        })
        {
            //Timeout = new TimeSpan(0, 0, 15),
        };

        public static HttpResponseMessage Request(string address) => RequestAsync(address).Result;
        public static async Task<HttpResponseMessage?> RequestAsync(string address, Dictionary<string, string> header = null)
        {
            try
            {
                var uri = new Uri(address);
                var request = new HttpRequestMessage(HttpMethod.Get, uri);
                if (header?.Count > 0)
                {
                    foreach (var h in header)
                    {
                        request.Headers.TryAddWithoutValidation(h.Key, h.Value);
                    }
                }
                return await _client.SendAsync(request);
            }
            catch (Exception ex)
            {
                Logs.Error((ex.InnerException ?? ex).Message);
                return null;
            }
        }
        public static async Task<string?> RequestStringAsync(string address, Dictionary<string, string> header = null)
        {
            try
            {
                var uri = new Uri(address);
                if (uri.Host.EndsWith("bilibili.com"))
                {
                    header ??= [];
                    header.TryAdd("Referer", "https://" + uri.Host);
                }
                var result = await RequestAsync(address, header);
                var content = await result?.Content.ReadAsStringAsync();
                if (result?.IsSuccessStatusCode != true)
                {
                    Logs.Warn($"请求失败: {address} {result?.StatusCode}: {content[..100]}");
                }
                return content;
            }
            catch (Exception ex)
            {
                Logs.Error(ex);
                return null;
            }
        }
        public static string RequestString(string address, Dictionary<string, string> header = null) => RequestStringAsync(address, header).Result;
        public static async Task<(HttpStatusCode code, byte[] data)> DownloadBytesAsync(string uri)
        {
            try
            {
                return (HttpStatusCode.OK, await _client.GetByteArrayAsync(uri));
            }
            catch (HttpRequestException ex)
            {
                return (ex.StatusCode ?? HttpStatusCode.BadRequest, null);
            }
            catch (Exception ex)
            {
                Logs.Error(ex);     // 返回false下载失败
                return (HttpStatusCode.BadRequest, null);
            }
        }
        public static async Task<(HttpStatusCode code, string path)> DownloadFileAsync(string url, string path = null, bool resume = true)
        {
            path ??= Datas.TempFilePath;
            var dire = Path.GetDirectoryName(path);
            if (!Directory.Exists(dire))
                Directory.CreateDirectory(dire);
            try
            {
                var result = await DownloadBytesAsync(url);
                if (result.code == HttpStatusCode.OK)
                {
                    await File.WriteAllBytesAsync(path, result.data);
                    return (HttpStatusCode.OK, path);
                }
                else
                    return (result.code, null);
            }
            catch (HttpRequestException webex)
            {
                return (webex.StatusCode ?? HttpStatusCode.BadRequest, null);
            }
            catch (Exception ex)
            {
                Logs.Error(ex);     // 返回false下载失败
                return (HttpStatusCode.BadRequest, null);
            }
        }
    }
}