public static bool Run(CompressimagesParameters parameters, ILogger logger)
{
CredentialsHandler credentialsProvider =
(url, user, cred) =>
new UsernamePasswordCredentials {
Username = KnownGitHubs.Username, Password = parameters.Password
};
// clone
var cloneOptions = new CloneOptions
{
CredentialsProvider = credentialsProvider,
};
Repository.Clone(parameters.CloneUrl, parameters.LocalPath, cloneOptions);
var repo = new Repository(parameters.LocalPath);
var remote = repo.Network.Remotes["origin"];
// check if we have the branch already or this is empty repo
try
{
if (repo.Network.ListReferences(remote, credentialsProvider).Any() == false)
{
logger.LogInformation("CompressImagesFunction: no references found for {Owner}/{RepoName}", parameters.RepoOwner, parameters.RepoName);
return(false);
}
if (repo.Network.ListReferences(remote, credentialsProvider).Any(x => x.CanonicalName == $"refs/heads/{KnownGitHubs.BranchName}"))
{
logger.LogInformation("CompressImagesFunction: branch already exists for {Owner}/{RepoName}", parameters.RepoOwner, parameters.RepoName);
return(false);
}
}
catch (Exception e)
{
// log + ignore
logger.LogWarning(e, "CompressImagesFunction: issue checking for existing branch or empty repo for {Owner}/{RepoName}", parameters.RepoOwner, parameters.RepoName);
}
var repoConfiguration = new RepoConfiguration();
try
{
// see if .imgbotconfig exists in repo root
var repoConfigJson = File.ReadAllText(parameters.LocalPath + Path.DirectorySeparatorChar + ".imgbotconfig");
if (!string.IsNullOrEmpty(repoConfigJson))
{
repoConfiguration = JsonConvert.DeserializeObject <RepoConfiguration>(repoConfigJson);
}
}
catch
{
// ignore
}
if (Schedule.ShouldOptimizeImages(repoConfiguration, repo) == false)
{
logger.LogInformation("CompressImagesFunction: skipping optimization due to schedule for {Owner}/{RepoName}", parameters.RepoOwner, parameters.RepoName);
return(false);
}
// check out the branch
repo.CreateBranch(KnownGitHubs.BranchName);
var branch = Commands.Checkout(repo, KnownGitHubs.BranchName);
// reset any mean files
repo.Reset(ResetMode.Mixed, repo.Head.Tip);
// optimize images
var imagePaths = ImageQuery.FindImages(parameters.LocalPath, repoConfiguration);
var optimizedImages = OptimizeImages(repo, parameters.LocalPath, imagePaths, logger, repoConfiguration.AggressiveCompression);
if (optimizedImages.Length == 0)
{
return(false);
}
// create commit message based on optimizations
foreach (var image in optimizedImages)
{
Commands.Stage(repo, image.OriginalPath);
}
var commitMessage = CommitMessage.Create(optimizedImages);
// commit
var signature = new Signature(KnownGitHubs.ImgBotLogin, KnownGitHubs.ImgBotEmail, DateTimeOffset.Now);
repo.Commit(commitMessage, signature, signature);
// We just made a normal commit, now we are going to capture all the values generated from that commit
// then rewind and make a signed commit
var commitBuffer = Commit.CreateBuffer(
repo.Head.Tip.Author,
repo.Head.Tip.Committer,
repo.Head.Tip.Message,
repo.Head.Tip.Tree,
repo.Head.Tip.Parents,
true,
null);
var signedCommitData = CommitSignature.Sign(commitBuffer + "\n", parameters.PgpPrivateKeyStream, parameters.PgPPassword);
repo.Reset(ResetMode.Soft, repo.Head.Commits.Skip(1).First().Sha);
var commitToKeep = repo.ObjectDatabase.CreateCommitWithSignature(commitBuffer, signedCommitData);
repo.Refs.UpdateTarget(repo.Refs.Head, commitToKeep);
var branchAgain = Commands.Checkout(repo, KnownGitHubs.BranchName);
repo.Reset(ResetMode.Hard, commitToKeep.Sha);
// push to GitHub
repo.Network.Push(remote, $"refs/heads/{KnownGitHubs.BranchName}", new PushOptions
{
CredentialsProvider = credentialsProvider,
});
return(true);
}
