using System;
using System.Collections.Generic;
using System.Linq;
using Cake.Core.Diagnostics;
using Cake.Core.IO;
using Cake.Frosting;
using Cake.Powershell;

namespace Build.Tasks;

[TaskName("CopyOutput")]
[IsDependeeOf(typeof(CreateBundleArchiveTask))]
public class CopyOutputTask : FrostingTask<BuildContext>
{
	public override void Run(BuildContext context)
	{
		var powershellModuleName = "PowershellModule";
		// TODO: [#10] Refactor file paths used in build project to be more explict and easier to understand
		//  Probably don't create full file locations when I can pass the output dir in and have the script make the path
		var scriptParams = new
		{
			PowershellModuleFileLocation = $"{context.PowershellModuleOutputDir}/{powershellModuleName}.psd1",
			Guid = Guid.Parse("5cdf4635-edb0-428c-8d9b-92d0bcd47443"),
			Author = "Me",
			NestedModules = new[] { $"{powershellModuleName}.dll" },
			RootModule = $"{powershellModuleName}.psm1",
			CmdletsToExport = GetExportedCmdlets(),
			ManifestFileLocation = $"{context.PowershellModuleOutputDir}/{powershellModuleName}.psm1",
			OutputLocation = context.PowershellModuleOutputDir,
		};

		var psSettings = new PowershellSettings()
		{
			Arguments = new ProcessArgumentBuilder(),
		};

		// This feels a bit ugly/redundant seeing as I've defined the scriptParams above, but I'm leaving it as is
		// until I want to come back and clean this up properly
		psSettings.Arguments.Append("powershellModuleFileLocation", ToPowershellSafeString(scriptParams.PowershellModuleFileLocation));
		psSettings.Arguments.Append("guid", ToPowershellSafeString(scriptParams.Guid.ToString()));
		psSettings.Arguments.Append("author", ToPowershellSafeString(scriptParams.Author));
		psSettings.Arguments.Append("nestedModules", $"@({string.Join(",", scriptParams.NestedModules.Select(ToPowershellSafeString))})");
		psSettings.Arguments.Append("rootModule", ToPowershellSafeString(scriptParams.RootModule));
		psSettings.Arguments.Append("cmdletsToExport", $"@({string.Join(",", scriptParams.CmdletsToExport.Select(ToPowershellSafeString))})");
		psSettings.Arguments.Append("manifestFileLocation", ToPowershellSafeString(scriptParams.ManifestFileLocation));
		psSettings.Arguments.Append("outputDir", ToPowershellSafeString(scriptParams.OutputLocation));

		context.StartPowershellFile(context.CreateModuleManifestScript, psSettings);
		context.Log.Information($"Module files output to: {context.PowershellModuleOutputDir.Path.MakeAbsolute(context.Environment)}");

		base.Run(context);
	}

	private static string ToPowershellSafeString(string unescapedString) => $"'{unescapedString}'";

	private static List<string> GetExportedCmdlets()
	{
		return ["Get-Calendar", .. GetGitRepoRegistrationVerbs()];
	}

	private static List<string> GetGitRepoRegistrationVerbs()
	{
		// TODO: I should make some reference file for these verbs and name but that'd pull in powershell dependencies
		//  to the build and I'd like to avoid that.
		//  This isn't great but commands are unlikely to change that frequently
		string[] verbs = ["Get", "New", "Remove", "Show"];
		var commandName = "GitRepoRegistration";
		return [.. verbs.Select(x => $"{x}-{commandName}")];
	}
}