using System;
using System.Management.Automation;
using System.Management.Automation.Provider;

namespace PowershellModule.Git;

// https://learn.microsoft.com/en-us/powershell/scripting/developer/provider/accessdbprovidersample02?view=powershell-7.6
[CmdletProvider(Name, ProviderCapabilities.None)]
public class GitProvider : NavigationCmdletProvider
{
	public const string Name = "GitRepo";

	public GitProvider()
	{
	}

	protected override PSDriveInfo NewDrive(PSDriveInfo drive)
	{
		// This is a bit of a hack to ensure that no drive is registered with a root location.
		// It seems to be how PSDrives are registered for Alias providers, and we technically don't have any concept
		// of a normal file system
		if (drive.Root != string.Empty)
		{
			throw new Exception("Drive root must be an empty string");
		}

		return base.NewDrive(drive);
	}

	protected override void NewItem(string path, string itemTypeName, object newItemValue)
	{
		//base.NewItem(path, itemTypeName, newItemValue);
	}

	protected override PSDriveInfo RemoveDrive(PSDriveInfo drive)
	{
		return base.RemoveDrive(drive);
	}

	protected override void GetChildNames(string path, ReturnContainers returnContainers)
	{
		// TODO: get all configured repos based on a path from the underlying GitPsDriveInfo then
		//  output their repository names
	}

	protected override void GetChildItems(string path, bool recurse)
	{
		// TODO: get all configured repos based on a path from the underlying GitPsDriveInfo then
		//  output their repository locations and any other meta data I store
	}

	// I think this is needed to be able to cd into it
	protected override bool IsItemContainer(string path)
	{
		return true;
	}

	// I think this is needed to be able to cd into it
	protected override bool ItemExists(string path)
	{
		return true;
	}

	protected override string MakePath(string parent, string child)
	{
		// Test to see what happens if set the location if the path matches a pretend repo registered with the name test
		// The result of the test is that yes, this does work, but there's also a shit load of calls to this method as
		// it traverses the entire directory path.
		// This seems to just be internal powershell behaviour so as long as this is quick the first time, everything
		// afterwards just always happens. But probably happens more seeing as I'm changing the location of the path
		// in this current SessionState and probably doesn't happen if this were a normal path traversal
		// where I don't set the location.
		if (child == "test")
		{
			SessionState.Path.SetLocation("F:/Repos/PowershellModule/src/PowershellModule/Git");
			return "F:/Repos/PowershellModule/src/PowershellModule/Git";
		}

		return base.MakePath(parent, child);
	}

	protected override bool IsValidPath(string path)
	{
		throw new System.NotImplementedException();
	}
}