using NuGet.Versioning;
using Velopack.Deployment;
using Velopack.Sources;

namespace Velopack.Packaging.Tests;

public class S3DeploymentTests
{
    public readonly static string B2_KEYID = "0035016844a4188000000000a";
    public readonly static string B2_SECRET = Environment.GetEnvironmentVariable("VELOPACK_B2_TEST_TOKEN");
    public readonly static string B2_BUCKET = "velopack-testing";
    public readonly static string B2_ENDPOINT = "s3.eu-central-003.backblazeb2.com";

    private readonly ITestOutputHelper _output;

    public S3DeploymentTests(ITestOutputHelper output)
    {
        _output = output;
    }

    [SkippableFact]
    public void CanDeployToBackBlazeB2()
    {
        Skip.If(String.IsNullOrWhiteSpace(B2_SECRET), "VELOPACK_B2_TEST_TOKEN is not set.");
        using var logger = _output.BuildLoggerFor<S3DeploymentTests>();
        using var _1 = Utility.GetTempDirectory(out var releaseDir);

        string channel = String.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable("CI"))
            ? VelopackRuntimeInfo.SystemOs.GetOsShortName()
            : "ci-" + VelopackRuntimeInfo.SystemOs.GetOsShortName();

        // get latest version, and increment patch by one
        var updateUrl = $"https://{B2_BUCKET}.{B2_ENDPOINT}/";
        var source = new SimpleWebSource(updateUrl);
        VelopackAssetFeed feed = new VelopackAssetFeed();
        try {
            feed = source.GetReleaseFeed(logger, channel).GetAwaiterResult();
        } catch (Exception ex) {
            logger.Warn(ex, "Failed to fetch release feed.");
        }
        var latest = feed.Assets.Where(a => a.Version != null && a.Type == VelopackAssetType.Full)
            .OrderByDescending(a => a.Version)
            .FirstOrDefault();
        var newVer = latest != null ? new SemanticVersion(1, 0, latest.Version.Patch + 1) : new SemanticVersion(1, 0, 0);

        // create repo
        var repo = new S3Repository(logger);
        var options = new S3UploadOptions {
            ReleaseDir = new DirectoryInfo(releaseDir),
            Bucket = B2_BUCKET,
            Channel = channel,
            Endpoint = "https://" + B2_ENDPOINT,
            KeyId = B2_KEYID,
            Secret = B2_SECRET,
            KeepMaxReleases = 4,
        };

        // download latest version and create delta
        repo.DownloadLatestFullPackageAsync(options).GetAwaiterResult();
        var id = "B2TestApp";
        TestApp.PackTestApp(id, newVer.ToFullString(), $"b2-{DateTime.UtcNow.ToLongDateString()}", releaseDir, logger, channel: channel);
        if (latest != null) {
            // check delta was created
            Assert.True(Directory.EnumerateFiles(releaseDir, "*-delta.nupkg").Any(), "No delta package was created.");
        }

        // upload new files
        repo.UploadMissingAssetsAsync(options).GetAwaiterResult();

        // verify that new version has been uploaded
        feed = source.GetReleaseFeed(logger, channel).GetAwaiterResult();
        latest = feed.Assets.Where(a => a.Version != null && a.Type == VelopackAssetType.Full)
            .OrderByDescending(a => a.Version)
            .FirstOrDefault();

        Assert.True(latest != null, "No latest version found.");
        Assert.Equal(newVer, latest.Version);
        Assert.True(feed.Assets.Count(x => x.Type == VelopackAssetType.Full) <= options.KeepMaxReleases, "Too many releases were kept.");
    }
}