using NozCli.Repl;
using Spectre.Console;

namespace NozCli.Commands;

public class CdCommand : ICommand
{
    public string Name        => "cd";
    public string Description => "Navigate into a topic or folder";
    public string Usage       => "cd <folder> | cd .. | cd ~";

    public async Task ExecuteAsync(string[] args, ReplContext ctx)
    {
        var target = args.FirstOrDefault();

        if (target is null or "~")
        {
            ctx.CurrentPath = "~";
            return;
        }

        if (target == "..")
        {
            var parts = ctx.CurrentPath.TrimEnd('/').Split('/');
            ctx.CurrentPath = parts.Length > 1
                ? string.Join("/", parts[..^1])
                : "~";
            return;
        }

        var candidate = ctx.CurrentPath == "~"
            ? $"~/noosphere/{target}"
            : $"{ctx.CurrentPath}/{target}";

        // Check the path has at least one note under it
        var prefix = candidate.Replace("~/noosphere/", "").Replace("~/noosphere", "");
        var exists = ctx.NoteCache.Any(n => n.Slug.StartsWith(prefix + "/") || n.Slug == prefix);

        if (!exists)
        {
            AnsiConsole.MarkupLine($"[red]cd: {target}: no such folder[/]");
            return;
        }

        ctx.CurrentPath = candidate;
        await Task.CompletedTask;
    }
}