Add API

API/MangaDownloadClients/ChromiumDownloadClient.cs

@@ -0,0 +1,110 @@
+using System.Net;
+using System.Text;
+using System.Text.RegularExpressions;
+using HtmlAgilityPack;
+using PuppeteerSharp;
+
+namespace API.MangaDownloadClients;
+
+internal class ChromiumDownloadClient : DownloadClient
+{
+    private static IBrowser? _browser;
+    private const int StartTimeoutMs = 10000;
+    private readonly HttpDownloadClient _httpDownloadClient;
+    
+    private static async Task<IBrowser> StartBrowser()
+    {
+        return await Puppeteer.LaunchAsync(new LaunchOptions
+        {
+            Headless = true,
+            Args = new [] {
+                "--disable-gpu",
+                "--disable-dev-shm-usage",
+                "--disable-setuid-sandbox",
+                "--no-sandbox"},
+            Timeout = StartTimeoutMs
+        }, new LoggerFactory([new LogProvider()])); //TODO
+    }
+
+    private class LogProvider : ILoggerProvider
+    {
+        //TODO
+        public void Dispose() { }
+
+        public ILogger CreateLogger(string categoryName) => new Logger();
+    }
+
+    private class Logger : ILogger
+    {
+        public Logger() : base() { }
+
+        public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception? exception, Func<TState, Exception?, string> formatter)
+        {
+            if (logLevel <= LogLevel.Information)
+                return;
+            //TODO
+        }
+
+        public bool IsEnabled(LogLevel logLevel) => true;
+
+        public IDisposable? BeginScope<TState>(TState state) where TState : notnull => null;
+    }
+
+    public ChromiumDownloadClient()
+    {
+        _httpDownloadClient = new();
+        if(_browser is null)
+            _browser = StartBrowser().Result;
+    }
+
+    private readonly Regex _imageUrlRex = new(@"https?:\/\/.*\.(?:p?jpe?g|gif|a?png|bmp|avif|webp)(\?.*)?");
+    internal override RequestResult MakeRequestInternal(string url, string? referrer = null, string? clickButton = null)
+    {
+        return _imageUrlRex.IsMatch(url)
+            ? _httpDownloadClient.MakeRequestInternal(url, referrer)
+            : MakeRequestBrowser(url, referrer, clickButton);
+    }
+
+    private RequestResult MakeRequestBrowser(string url, string? referrer = null, string? clickButton = null)
+    {
+        IPage page = _browser.NewPageAsync().Result;
+        page.DefaultTimeout = 10000;
+        IResponse response;
+        try
+        {
+            response = page.GoToAsync(url, WaitUntilNavigation.Networkidle0).Result;
+        }
+        catch (Exception e)
+        {
+            page.CloseAsync();
+            return new RequestResult(HttpStatusCode.InternalServerError, null, Stream.Null);
+        }
+
+        Stream stream = Stream.Null;
+        HtmlDocument? document = null;
+
+        if (response.Headers.TryGetValue("Content-Type", out string? content))
+        {
+            if (content.Contains("text/html"))
+            {
+                if (clickButton is not null && page.QuerySelectorAsync(clickButton).Result is not null)
+                    page.ClickAsync(clickButton).Wait();
+                string htmlString = page.GetContentAsync().Result;
+                stream = new MemoryStream(Encoding.Default.GetBytes(htmlString));
+                document = new ();
+                document.LoadHtml(htmlString);
+            }else if (content.Contains("image"))
+            {
+                stream = new MemoryStream(response.BufferAsync().Result);
+            }
+        }
+        else
+        {
+            page.CloseAsync();
+            return new RequestResult(HttpStatusCode.InternalServerError, null, Stream.Null);
+        }
+        
+        page.CloseAsync();
+        return new RequestResult(response.Status, document, stream, false, "");
+    }
+}