redirect/Redirects.cs

using System.Text.Json.Serialization;

class Redirect
{
    
    private static Dictionary<string,IRedirect> redirects = new Dictionary<string, IRedirect>
    {
        // CrossLang Shell
        {"crosslang-shell",Gitea("https://git.tesses.org/","tesses50/crosslangextras","ShellPackage.crvm",true)},

        // TessesFramework
        {"tessesframework",Std("https://git.tesses.org/tesses50/tessesframework")},
        {"tf-tools-win32",TF("tessesframework-tools-x86-windows-gnu.zip")},
        {"tf-tools-win64",TF("tessesframework-tools-x86_64-windows-gnu.zip")},
        {"tf-linux-i386",TFR("tessesframework-@TAG@-386.tar.gz")},
        {"tf-linux-amd64",TFR("tessesframework-@TAG@-amd64.tar.gz")},
        {"tf-linux-arm64",TFR("tessesframework-@TAG@-arm64.tar.gz")},
        {"tf-linux-arm7",TFR("tessesframework-@TAG@-arm7.tar.gz")},
        {"tf-linux-powerpc",TFR("tessesframework-@TAG@-powerpc.tar.gz")},
        {"tf-linux-riscv64",TFR("tessesframework-@TAG@-riscv64.tar.gz")},

        // CrossLang
        {"crosslang",Std("https://git.tesses.org/tesses50/crosslang")},
        {"cl-portable-win32",CL("crosslang-win32-portable.exe")},
        {"cl-portable-win64",CL("crosslang-win64-portable.exe")},
        {"cl-setup-win32",CL("crosslang-win32-setup.exe")},
        {"cl-setup-win64",CL("crosslang-win64-setup.exe")},
        {"cl-linux-i386",CLR("crossslang-@TAG@-386.tar.gz")},
        {"cl-linux-amd64",CLR("crossslang-@TAG@-amd64.tar.gz")},
        {"cl-linux-arm64",CLR("crossslang-@TAG@-arm64.tar.gz")},
        {"cl-linux-arm7",CLR("crossslang-@TAG@-arm7.tar.gz")},
        {"cl-linux-powerpc",CLR("crossslang-@TAG@-powerpc.tar.gz")},
        {"cl-linux-riscv64",CLR("crossslang-@TAG@-riscv64.tar.gz")},
    };

    private static IRedirect Std(string url)
    {
        return new StdRedirect(url);
    }
    private static IRedirect Gitea(string giteaServer, string giteaProject, string file, bool prerelease = false)
    {
        return new GiteaReleaseRedirect(giteaServer,giteaProject,file,prerelease);
    }
    private static IRedirect GiteaR(string giteaServer, string giteaProject, string file, bool prerelease = false)
    {
        return new GiteaReleaseRedirect(giteaServer,giteaProject,file,prerelease);
    }
    private static IRedirect TF(string filename)
    {
        return Gitea(
            "https://git.tesses.org/",
            "tesses50/tessesframework",
            filename,
            true
        );
    }
    private static IRedirect TFR(string filename)
    {
        return GiteaR(
            "https://git.tesses.org/",
            "tesses50/tessesframework",
            filename,
            true
        );
    }
    private static IRedirect CL(string filename)
    {
        return Gitea(
            "https://git.tesses.org/",
            "tesses50/crosslang",
            filename,
            true
        );
    }
    private static IRedirect CLR(string filename)
    {
        return GiteaR(
            "https://git.tesses.org/",
            "tesses50/crosslang",
            filename,
            true
        );
    }

    public static async Task<string?> HandleRedirectAsync(string redir)
    {
        if(redirects.ContainsKey(redir))
            return await redirects[redir].RedirectAsync();
        return null;
    }
}

interface IRedirect
{
    public Task<string?> RedirectAsync();
}

public class StdRedirect(string url) : IRedirect
{
    public async Task<string?> RedirectAsync()
    {
        return await Task.FromResult(url);
    }
}
public class GiteaReleaseRedirect(string giteaServer, string giteaProject, string file, bool prerelease = false) : IRedirect
{
    private static HttpClient client =new HttpClient();
    public async Task<string?> RedirectAsync()
    {
        // https://git.tesseslanguage.com/api/v1/repos/tesses50/crosslang/releases?pre-release=true&limit=1
        var resp = await client.GetFromJsonAsync<List<_release>>($"{giteaServer.TrimEnd('/')}/api/v1/repos/{System.Web.HttpUtility.UrlPathEncode(giteaProject)}/releases?pre-release={(prerelease ? "true":"false")}&limit=1");
        if(resp is not null)
        {
            var resp2 = resp.FirstOrDefault();
            if(resp2 is not null)
            {
                foreach(var item in resp2.Assets)
                {
                    if(item.Name == file)
                        return item.Url;
                }
            }
        }
        return null;
    }

    private class _release
    {
        [JsonPropertyName("assets")]        
        public List<_asset> Assets {get;set;}=new List<_asset>();


        public class _asset
        {
            [JsonPropertyName("name")]
            public string Name {get;set;}="";

            [JsonPropertyName("browser_download_url")] 
            public string Url {get;set;}="";
        }
    }
}
public class GiteaReleaseWithVersionInNameRedirect(string giteaServer, string giteaProject, string file, bool prerelease = false) : IRedirect
{
    private static HttpClient client =new HttpClient();
    public async Task<string?> RedirectAsync()
    {
        // https://git.tesseslanguage.com/api/v1/repos/tesses50/crosslang/releases?pre-release=true&limit=1
        var resp = await client.GetFromJsonAsync<List<_release>>($"{giteaServer.TrimEnd('/')}/api/v1/repos/{System.Web.HttpUtility.UrlPathEncode(giteaProject)}/releases?pre-release={(prerelease ? "true":"false")}&limit=1");
        if(resp is not null)
        {
            var resp2 = resp.FirstOrDefault();
            if(resp2 is not null)
            {
                string name = file.Replace("@TAG@", resp2.TagName);
                Console.WriteLine(name);

                foreach(var item in resp2.Assets)
                {
                    if(item.Name == name)
                        return item.Url;
                }
            }
        }
        return null;
    }

    private class _release
    {
        [JsonPropertyName("tag_name")]
        public string TagName {get;set;} = "";
        [JsonPropertyName("assets")]        
        public List<_asset> Assets {get;set;}=new List<_asset>();


        public class _asset
        {
            [JsonPropertyName("name")]
            public string Name {get;set;}="";

            [JsonPropertyName("browser_download_url")] 
            public string Url {get;set;}="";
        }
    }
}