GitHubのコントリビューション数をパースして取得するやつ

GitHubContributionsReader.cs

public static class GitHubContributionsReader
{
    static readonly string HostUrl = @"https://github.com/";

    static readonly HttpClient httpClient = new HttpClient();

    public static async Task<IEnumerable<ContributionItem>> GetContributionsAsync(string username)
    {
        var url = HostUrl + username;
        var html = await httpClient.GetStringAsync(url);;
        return ParseHtml(html);
    }

    private static IEnumerable<ContributionItem> ParseHtml(string html)
    {
        var document = new HtmlParser().Parse(html);
        
        var graphCanvas = document
            .QuerySelectorAll("div")
            .Where(x => x.ClassList.Contains("graph-canvas"))
            .First();
        
        var dayNodes = graphCanvas.QuerySelectorAll("rect");

        return dayNodes.Select(x => new ContributionItem
        {
            Date = DateTime.Parse(x.GetAttribute("data-date")),
            Contributions = int.Parse(x.GetAttribute("data-count")),
        })
        .OrderBy(x => x.Date);
    }
}

public class ContributionItem
{
    public DateTime Date { get; set; }
    public int Contributions { get; set; }
}

GitHubContributionsReader.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netstandard1.4</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="AngleSharp" Version="0.9.9" />
  </ItemGroup>

</Project>