public ChangesetDiffViewModel(
string username, string repository, string node, string filename,
IApplicationService applicationService = null, IDiffService diffService = null)
{
Username = username;
Repository = repository;
Node = node;
Filename = filename;
_applicationService = applicationService = applicationService ?? Locator.Current.GetService <IApplicationService>();
diffService = diffService ?? Locator.Current.GetService <IDiffService>();
var actualFilename = Path.GetFileName(filename);
if (actualFilename == null)
{
actualFilename = filename.Substring(filename.LastIndexOf('/') + 1);
}
Title = actualFilename;
LoadCommand = ReactiveCommand.CreateFromTask(async t =>
{
Patch = null;
BinaryFilePath = null;
var currentFilePath = Path.Combine(Path.GetTempPath(), actualFilename);
var hasCurrent = _commitFileModel.Type != "removed";
var hasPast = _commitFileModel.Type != "added";
var isBinary = false;
if (hasCurrent)
{
using (var stream = new FileStream(currentFilePath, FileMode.Create, FileAccess.Write))
{
await applicationService.Client.Repositories.GetRawFile(username, repository, node, filename, stream);
}
using (var stream = new FileStream(currentFilePath, FileMode.Open, FileAccess.Read))
{
var buffer = new byte[1024];
var read = stream.Read(buffer, 0, 1024);
isBinary = buffer.Take(read).Any(x => x == 0);
}
}
if (isBinary)
{
BinaryFilePath = currentFilePath;
return;
}
var parentFilePath = actualFilename + ".parent";
var pastFilePath = Path.Combine(Path.GetTempPath(), parentFilePath);
if (hasPast)
{
var changeset = await applicationService.Client.Commits.GetChangeset(username, repository, node);
var parent = changeset.Parents?.FirstOrDefault();
if (parent == null)
{
throw new Exception("Diff has no parent. Unable to generate view.");
}
using (var stream = new FileStream(pastFilePath, FileMode.Create, FileAccess.Write))
{
await applicationService.Client.Repositories.GetRawFile(username, repository, parent, filename, stream);
}
using (var stream = new FileStream(pastFilePath, FileMode.Open, FileAccess.Read))
{
var buffer = new byte[1024];
var read = stream.Read(buffer, 0, 1024);
isBinary = buffer.Take(read).Any(x => x == 0);
}
}
if (isBinary)
{
BinaryFilePath = currentFilePath;
return;
}
string newText = null, oldText = null;
if (hasCurrent)
{
newText = await Task.Run(() => File.ReadAllText(currentFilePath));
}
if (hasPast)
{
oldText = await Task.Run(() => File.ReadAllText(pastFilePath));
}
Patch = diffService.CreateDiff(oldText, newText, 5).ToList();
var items = await applicationService.Client.AllItems(x => x.Commits.GetComments(username, repository, node));
var comments = items.Where(x => x.Inline?.Path == filename).ToList();
var commentsMap = comments.ToDictionary(x => x.Id);
foreach (var comment in comments.Where(x => x.Parent != null))
{
var parentComment = commentsMap[comment.Parent.Id];
while (parentComment?.Parent != null)
{
parentComment = commentsMap[parentComment.Parent.Id];
}
comment.Inline = parentComment.Inline;
}
Comments = comments;
});
}