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feat(git-provider): Remove concept of directory registrations and keep it simple

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This commit is contained in:
Scott 2026-08-21 16:53:40 +10:00
commit 2b3c7d0153
3 changed files with 45 additions and 138 deletions
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158
src/ModuleCore/Git/GitManager.cs
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@ -1,4 +1,6 @@
namespace ModuleCore.Git;
using System.Collections.Concurrent;
namespace ModuleCore.Git;
// TODO: better name for this
public class GitManager
@ -11,23 +13,19 @@ public class GitManager
/// </summary>
internal static GitManager InternalFreshInstance => new();
/// <summary>
/// Simply <see cref="Path.DirectorySeparatorChar"/>.ToString()
/// </summary>
private static readonly string DirectorySeparator = Path.DirectorySeparatorChar.ToString();
private class GitRegistration
{
public required string Name { get; set; }
public required string Location { get; set; }
}
private readonly InternalDirectory _repositories;
private readonly Lock _readWriteLock = new();
private readonly ConcurrentDictionary<string, GitRegistration> _registrations;
private GitManager()
{
Console.WriteLine($"{nameof(GitManager)} init");
// Initialise the root container
_repositories = new InternalDirectory()
{
Name = DirectorySeparator,
InternalPath = DirectorySeparator
};
_registrations = new ConcurrentDictionary<string, GitRegistration>();
}
/// <summary>
@ -39,131 +37,19 @@ public class GitManager
/// <returns>The normalised string the repository was registered against</returns>
public string RegisterRepo(string absoluteRepositoryLocation, string registrationName)
{
// Depending on the caller, it might be possible that they've scripted automatic repo registration. Because I
// don't really want to account to all the subtle ways that can be parallised, I just naively lock on every
// registration attempt. This method should be quick regardless, and I could use ConcurrentDictionary except
// that means every instance of InternalDirectory would need it and yeah nah fuck that I can just lock at the
// top level
lock (_readWriteLock)
registrationName = string.IsNullOrWhiteSpace(registrationName)
? new DirectoryInfo(absoluteRepositoryLocation).Name
: registrationName;
if (_registrations.TryAdd(registrationName, new GitRegistration()
{
Name = registrationName,
Location = absoluteRepositoryLocation,
}))
{
var normalisedName = NormaliseNamePath(string.IsNullOrWhiteSpace(registrationName)
? new DirectoryInfo(absoluteRepositoryLocation).Name
: registrationName);
// Regardless of if we get a name or not, the fully qualified version for us
// starts with a /
var directorySegmentsFromName = NameToSegments(normalisedName);
var added = _repositories.Add(absoluteRepositoryLocation, directorySegmentsFromName);
// Not sure about this, the Add should throw any exceptions on duplicate/failures but for now I'll leave this
// here
if (added == null)
{
throw new Exception("Failed to register location");
}
return normalisedName;
return registrationName;
}
}
/// <summary>
/// Takes a name and returns it as a queue of its parts, starting with a root of <see cref="DirectorySeparator"/>
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
private Queue<string> NameToSegments(string name)
{
var segments = name.Split(DirectorySeparator);
return segments.Length == 1
? new Queue<string>([DirectorySeparator, name])
: new Queue<string>([DirectorySeparator, ..segments]);
}
/// <summary>
/// Normalises the path separators in the given string to use Path.DirectorySeparatorChar
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
private string NormaliseNamePath(string name)
{
// Feels a bit hacky, but this will actually normalise a path to a valid form. So if the input is
// some/directory/paths, Path.GetRelativePath will normalise it to some\directory\paths, relative to ./
// which is kind of handy but I also just wish there was a Path method that would do this for me. I know that
// the whole point of Path is that it's based on a file system, but file systems can also be arbitrary and not
// always be drive rooted.
// Either way, this works and saves me having to reimplement a worse method when it's more important that users
// are able to use file paths in whatever form they prefer, which means we leverage the internal implementation
// in a weird way.
return Path.GetRelativePath("./", name);
}
private class InternalDirectory
{
/// <summary>
/// Name of the folder this
/// </summary>
public string Name { get; set; } = null!;
public Dictionary<string, InternalDirectory> Children { get; set; } = [];
internal string InternalPath { get; set; }
/// <summary>
/// If not null, this is the absolute location of a registered git repository
/// </summary>
public string? FullRepositoryPath { get; set; }
/// <summary>
///
/// </summary>
/// <param name="absoluteRepositoryLocation"></param>
/// <param name="directorySegmentsFromName"></param>
/// <returns></returns>
/// <exception cref="Exception"></exception>
internal InternalDirectory? Add(string absoluteRepositoryLocation, Queue<string> directorySegmentsFromName)
{
var topStack = directorySegmentsFromName.Dequeue();
if (topStack != Name)
{
// logically it shouldn't be possible to have a value on top of the stack that _doesn't_ exist, but
// just incase we throw as this should only happen if an Add is attempted on the root and the queue was
// not correctly rooted to /
throw new Exception($"Directory segment does not seem to exist: {topStack}");
}
// We're at the end of the directory segments so we can safely say we're at the end of the tree so
// we add it to the relevant dictionary
if (directorySegmentsFromName.Count == 0)
{
// If this is a new registration, set the FullRepositoryPath and return, otherwise we've got a duplicate
// entry and we throw
if (FullRepositoryPath == null)
{
FullRepositoryPath = absoluteRepositoryLocation;
return this;
}
throw new Exception($"Registration already exists for {InternalPath}");
}
var nextSegment = directorySegmentsFromName.Peek();
// Attempt to get the next level of the directory. If we don't have a key entry, create one
if (!Children.TryGetValue(nextSegment, out var nextChild))
{
nextChild = new InternalDirectory()
{
Name = nextSegment,
InternalPath = Path.Combine(InternalPath, nextSegment)
};
Children.Add(nextSegment, nextChild);
}
// add the next
return nextChild.Add(absoluteRepositoryLocation, directorySegmentsFromName);
}
throw new Exception($"Git repo already registered with the name {registrationName}");
}
}