public PullRequestCreationViewModel(
IConnection connection,
IModelServiceFactory modelServiceFactory,
ILocalRepositoryModel activeRepo,
IPullRequestService service,
INotificationService notifications)
{
Guard.ArgumentNotNull(connection, nameof(connection));
Guard.ArgumentNotNull(modelServiceFactory, nameof(modelServiceFactory));
Guard.ArgumentNotNull(activeRepo, nameof(activeRepo));
Guard.ArgumentNotNull(service, nameof(service));
Guard.ArgumentNotNull(notifications, nameof(notifications));
activeLocalRepo = activeRepo;
modelService = modelServiceFactory.CreateBlocking(connection);
var obs = modelService.ApiClient.GetRepository(activeRepo.Owner, activeRepo.Name)
.Select(r => new RemoteRepositoryModel(r))
.PublishLast();
disposables.Add(obs.Connect());
githubObs = obs;
githubRepository = githubObs.ToProperty(this, x => x.GitHubRepository);
this.WhenAnyValue(x => x.GitHubRepository)
.WhereNotNull()
.Subscribe(r =>
{
TargetBranch = r.IsFork ? r.Parent.DefaultBranch : r.DefaultBranch;
});
SourceBranch = activeRepo.CurrentBranch;
this.WhenAnyValue(x => x.Branches)
.WhereNotNull()
.Where(_ => TargetBranch != null)
.Subscribe(x =>
{
if (!x.Any(t => t.Equals(TargetBranch)))
{
TargetBranch = GitHubRepository.IsFork ? GitHubRepository.Parent.DefaultBranch : GitHubRepository.DefaultBranch;
}
});
SetupValidators();
var uniqueCommits = this.WhenAnyValue(
x => x.SourceBranch,
x => x.TargetBranch)
.Where(x => x.Item1 != null && x.Item2 != null)
.Select(branches =>
{
var baseBranch = branches.Item1.Name;
var compareBranch = branches.Item2.Name;
// We only need to get max two commits for what we're trying to achieve here.
// If there's no commits we want to block creation of the PR, if there's one commits
// we wan't to use its commit message as the PR title/body and finally if there's more
// than one we'll use the branch name for the title.
return(service.GetMessagesForUniqueCommits(activeRepo, baseBranch, compareBranch, maxCommits: 2)
.Catch <IReadOnlyList <CommitMessage>, Exception>(ex =>
{
log.Warning(ex, "Could not load unique commits");
return Observable.Empty <IReadOnlyList <CommitMessage> >();
}));
})
.Switch()
.ObserveOn(RxApp.MainThreadScheduler)
.Replay(1)
.RefCount();
var whenAnyValidationResultChanges = this.WhenAny(
x => x.TitleValidator.ValidationResult,
x => x.BranchValidator.ValidationResult,
x => x.IsBusy,
(x, y, z) => (x.Value?.IsValid ?? false) && (y.Value?.IsValid ?? false) && !z.Value);
this.WhenAny(x => x.BranchValidator.ValidationResult, x => x.GetValue())
.WhereNotNull()
.Where(x => !x.IsValid && x.DisplayValidationError)
.Subscribe(x => notifications.ShowError(BranchValidator.ValidationResult.Message));
CreatePullRequest = ReactiveCommand.CreateAsyncObservable(whenAnyValidationResultChanges,
_ => service
.CreatePullRequest(modelService, activeRepo, TargetBranch.Repository, SourceBranch, TargetBranch, PRTitle, Description ?? String.Empty)
.Catch <IPullRequestModel, Exception>(ex =>
{
log.Error(ex, "Error creating pull request");
//TODO:Will need a uniform solution to HTTP exception message handling
var apiException = ex as ApiValidationException;
var error = apiException?.ApiError?.Errors?.FirstOrDefault();
notifications.ShowError(error?.Message ?? ex.Message);
return(Observable.Empty <IPullRequestModel>());
}))
.OnExecuteCompleted(pr =>
{
notifications.ShowMessage(String.Format(CultureInfo.CurrentCulture, Resources.PRCreatedUpstream, SourceBranch.DisplayName, TargetBranch.Repository.Owner + "/" + TargetBranch.Repository.Name + "#" + pr.Number,
TargetBranch.Repository.CloneUrl.ToRepositoryUrl().Append("pull/" + pr.Number)));
});
isExecuting = CreatePullRequest.IsExecuting.ToProperty(this, x => x.IsExecuting);
this.WhenAnyValue(x => x.Initialized, x => x.GitHubRepository, x => x.Description, x => x.IsExecuting)
.Select(x => !(x.Item1 && x.Item2 != null && x.Item3 != null && !x.Item4))
.Subscribe(x => IsBusy = x);
Observable.CombineLatest(
this.WhenAnyValue(x => x.SourceBranch),
uniqueCommits,
service.GetPullRequestTemplate(activeRepo).DefaultIfEmpty(string.Empty),
(compare, commits, template) => new { compare, commits, template })
.Subscribe(x =>
{
var prTitle = string.Empty;
var prDescription = string.Empty;
if (x.commits.Count == 1)
{
prTitle = x.commits[0].Summary;
prDescription = x.commits[0].Details;
}
else
{
prTitle = x.compare.Name.Humanize();
}
if (!string.IsNullOrWhiteSpace(x.template))
{
if (!string.IsNullOrEmpty(prDescription))
{
prDescription += "\n\n";
}
prDescription += x.template;
}
PRTitle = prTitle;
Description = prDescription;
});
}
void LoadDescriptionFromCommits()
{
SourceBranch = gitService.GetBranch(activeLocalRepo);
var uniqueCommits = this.WhenAnyValue(
x => x.SourceBranch,
x => x.TargetBranch)
.Where(x => x.Item1 != null && x.Item2 != null)
.Select(branches =>
{
var baseBranch = branches.Item1.Name;
var compareBranch = branches.Item2.Name;
// We only need to get max two commits for what we're trying to achieve here.
// If there's no commits we want to block creation of the PR, if there's one commits
// we wan't to use its commit message as the PR title/body and finally if there's more
// than one we'll use the branch name for the title.
return(service.GetMessagesForUniqueCommits(activeLocalRepo, baseBranch, compareBranch, maxCommits: 2)
.Catch <IReadOnlyList <CommitMessage>, Exception>(ex =>
{
log.Warning(ex, "Could not load unique commits");
return Observable.Empty <IReadOnlyList <CommitMessage> >();
}));
})
.Switch()
.ObserveOn(RxApp.MainThreadScheduler)
.Replay(1)
.RefCount();
Observable.CombineLatest(
this.WhenAnyValue(x => x.SourceBranch),
uniqueCommits,
service.GetPullRequestTemplate(activeLocalRepo).DefaultIfEmpty(string.Empty),
(compare, commits, template) => new { compare, commits, template })
.Subscribe(x =>
{
var prTitle = string.Empty;
var prDescription = string.Empty;
if (x.commits.Count == 1)
{
prTitle = x.commits[0].Summary;
prDescription = x.commits[0].Details;
}
else
{
prTitle = x.compare.Name.Humanize();
}
if (!string.IsNullOrWhiteSpace(x.template))
{
if (!string.IsNullOrEmpty(prDescription))
{
prDescription += "\n\n";
}
prDescription += x.template;
}
PRTitle = prTitle;
Description = prDescription;
});
}
public async Task InitializeAsync(ILocalRepositoryModel repository, IConnection connection)
{
modelService = await modelServiceFactory.CreateAsync(connection);
activeLocalRepo = repository;
SourceBranch = repository.CurrentBranch;
var obs = modelService.ApiClient.GetRepository(repository.Owner, repository.Name)
.Select(r => new RemoteRepositoryModel(r))
.PublishLast();
disposables.Add(obs.Connect());
var githubObs = obs;
githubRepository = githubObs.ToProperty(this, x => x.GitHubRepository);
this.WhenAnyValue(x => x.GitHubRepository)
.WhereNotNull()
.Subscribe(r =>
{
TargetBranch = r.IsFork ? r.Parent.DefaultBranch : r.DefaultBranch;
});
githubObs.SelectMany(r =>
{
var b = Observable.Empty <IBranch>();
if (r.IsFork)
{
b = modelService.GetBranches(r.Parent).Select(x =>
{
return(x);
});
}
return(b.Concat(modelService.GetBranches(r)));
})
.ToList()
.ObserveOn(RxApp.MainThreadScheduler)
.Subscribe(x =>
{
Branches = x.ToList();
Initialized = true;
});
SourceBranch = activeLocalRepo.CurrentBranch;
var uniqueCommits = this.WhenAnyValue(
x => x.SourceBranch,
x => x.TargetBranch)
.Where(x => x.Item1 != null && x.Item2 != null)
.Select(branches =>
{
var baseBranch = branches.Item1.Name;
var compareBranch = branches.Item2.Name;
// We only need to get max two commits for what we're trying to achieve here.
// If there's no commits we want to block creation of the PR, if there's one commits
// we wan't to use its commit message as the PR title/body and finally if there's more
// than one we'll use the branch name for the title.
return(service.GetMessagesForUniqueCommits(activeLocalRepo, baseBranch, compareBranch, maxCommits: 2)
.Catch <IReadOnlyList <CommitMessage>, Exception>(ex =>
{
log.Warning(ex, "Could not load unique commits");
return Observable.Empty <IReadOnlyList <CommitMessage> >();
}));
})
.Switch()
.ObserveOn(RxApp.MainThreadScheduler)
.Replay(1)
.RefCount();
Observable.CombineLatest(
this.WhenAnyValue(x => x.SourceBranch),
uniqueCommits,
service.GetPullRequestTemplate(repository).DefaultIfEmpty(string.Empty),
(compare, commits, template) => new { compare, commits, template })
.Subscribe(x =>
{
var prTitle = string.Empty;
var prDescription = string.Empty;
if (x.commits.Count == 1)
{
prTitle = x.commits[0].Summary;
prDescription = x.commits[0].Details;
}
else
{
prTitle = x.compare.Name.Humanize();
}
if (!string.IsNullOrWhiteSpace(x.template))
{
if (!string.IsNullOrEmpty(prDescription))
{
prDescription += "\n\n";
}
prDescription += x.template;
}
PRTitle = prTitle;
Description = prDescription;
});
Initialized = true;
}