using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.IO.Compression;
using Octokit;
using Octokit.Internal;

namespace Jackett.Distribution
{
    class Program
    {
        static readonly string repoOwner = "zone117x";
        static readonly string repoName = "Jackett";
        static readonly string jackettLibPath = Path.Combine("build.windows", "Jackett.dll");
        static readonly string buildZipFileWindows = "JackettBuildWindows.zip";
        static readonly string buildZipFileMono = "JackettBuildMono.zip";
        static readonly string installFile = Path.Combine("Output", "setup.exe");

        static GitHubClient github;
        static Version localVersion;

        static void Main(string[] args)
        {
            if (args.Length == 0)
            {
                throw new Exception("Missing github API token argument");
            }
            var token = args[0];
            github = new GitHubClient(new ProductHeaderValue("Jackett"));
            github.Credentials = new Credentials(token);

            localVersion = GetJackettVersion();
            /*var latestReleaseVersion = LatestGithubRelease().Result;
            if (localVersion <= latestReleaseVersion)
            {
                Console.WriteLine("Latest Github release is {0}, will not upload local version {1}", latestReleaseVersion, localVersion);
                return;
            }*/

            Console.WriteLine("Zipping release build for Windows " + localVersion);
            ZippingReleaseBuildWindows();

            Console.WriteLine("Zipping release build for Mono " + localVersion);
            ZippingReleaseBuildMono();

            UploadRelease().Wait();
        }

        static Version GetJackettVersion()
        {
            var assemblyVersion = AssemblyName.GetAssemblyName(jackettLibPath).Version;
            return new Version(assemblyVersion.Major, assemblyVersion.Minor, assemblyVersion.Build);
        }

        static async Task<Version> LatestGithubRelease()
        {
            var releases = await github.Release.GetAll(repoOwner, repoName);
            var latest = releases.Where(t => t.PublishedAt != null).OrderByDescending(t => t.TagName).FirstOrDefault();
            var version = Version.Parse(latest.TagName.Replace("v", ""));
            return version;
        }

        static void ZippingReleaseBuildWindows()
        {
            if (File.Exists(buildZipFileWindows))
                File.Delete(buildZipFileWindows);
            ZipFile.CreateFromDirectory("build.windows", buildZipFileWindows);
        }

        static void ZippingReleaseBuildMono()
        {
            if (File.Exists(buildZipFileMono))
                File.Delete(buildZipFileMono);
            ZipFile.CreateFromDirectory("build.mono", buildZipFileMono);
        }

        static async Task UploadRelease()
        {
            // get last master commit to tag
            /*var masterBranch = await github.Repository.GetBranch(repoOwner, repoName, "master");
            var lastCommit = masterBranch.Commit.Sha;

            // create tag
            var tagName = "v" + localVersion.ToString();
            var tag = new NewTag
            {
                Message = "Tagging a new release of Jackett",
                Tag = tagName,
                Object = lastCommit,
                Type = TaggedType.Commit,
                Tagger = new SignatureResponse("DistributionBot", "zone117x@gmail.com", DateTime.UtcNow)
            };
            var tagResult = await github.GitDatabase.Tag.Create(repoOwner, repoName, tag);*/

            // create release entry
            var newRelease = new NewRelease("v" + localVersion.ToString());
            newRelease.Name = "Beta Release";
            newRelease.Body = "";
            newRelease.Draft = true;
            newRelease.Prerelease = false;

            var releaseResult = await github.Release.Create(repoOwner, repoName, newRelease);

            Console.WriteLine("Uploading Windows build");
            await UploadFileToGithub(releaseResult, buildZipFileWindows, string.Format("Jackett.Windows.v{0}.zip", localVersion), "application/zip");
            Console.WriteLine("Uploading Mono build");
            await UploadFileToGithub(releaseResult, buildZipFileMono, string.Format("Jackett.Mono.v{0}.zip", localVersion), "application/zip");
            Console.WriteLine("Uploading Windows installer");
            await UploadFileToGithub(releaseResult, installFile, string.Format("Jackett.v{0}.Windows.Installer.exe", localVersion), "application/octet-stream");
        }

        static Task UploadFileToGithub(Release githubRelease, string filePath, string filePublishName, string contentType)
        {
            var buildZipAssetWindows = new ReleaseAssetUpload()
            {
                FileName = filePublishName,
                ContentType = contentType,
                RawData = File.OpenRead(filePath)
            };
            return github.Release.UploadAsset(githubRelease, buildZipAssetWindows);
        }
    }
}