Add project files.

MangaReader.Core/WebSearch/MangaWebSearchBase.cs

@@ -0,0 +1,33 @@
+using MangaReader.Core.HttpService;
+using System.Text.Json;
+
+namespace MangaReader.Core.WebSearch;
+
+public abstract class MangaWebSearchBase<T>(IHttpService httpService) : IMangaWebSearch<T>
+{
+    private static JsonSerializerOptions _jsonSerializerOptions = new()
+    {
+        PropertyNameCaseInsensitive = true
+    };
+
+    public async Task<MangaSearchResult[]> SearchAsync(string keyword)
+    {
+        T? searchResult = await GetSearchResultAsync(keyword);
+
+        if (searchResult == null)
+            return [];
+
+        return GetSearchResult(searchResult);
+    }
+
+    private async Task<T?> GetSearchResultAsync(string keyword)
+    {
+        string url = GetSearchUrl(keyword);
+        string response = await httpService.GetStringAsync(url);
+
+        return JsonSerializer.Deserialize<T>(response, _jsonSerializerOptions);
+    }
+
+    protected abstract string GetSearchUrl(string keyword);
+    protected abstract MangaSearchResult[] GetSearchResult(T searchResult);
+}