using SilkroadBot.Plugins.SDK.Attributes;
using SilkroadBot.Plugins.SDK.Interfaces;
using SilkroadBot.Plugins.SDK.Models;

namespace SilkroadBot.Plugin.CommandCenter;

/// <summary>
/// Command Center plugin - provides a command-based interface for controlling the bot.
/// Supports custom commands, macros, and scheduled tasks.
/// </summary>
[Plugin("command-center", "Command Center", "Command-based bot control with macros and scheduled tasks")]
public class CommandCenterPlugin : PluginBase
{
    public override string Id => "command-center";
    public override string Name => "Command Center";
    public override Version Version => new(1, 0, 0);
    public override string Author => "SilkroadBot Team";
    public override string Description => "Bot control via commands, macros, and task scheduling";

    private readonly Dictionary<string, Func<string[], Task>> _commands = new();
    private readonly List<ScheduledTask> _scheduledTasks = new();
    private CancellationTokenSource? _schedulerCts;

    public override Task InitializeAsync(IPluginContext context)
    {
        base.InitializeAsync(context);
        RegisterDefaultCommands();
        return Task.CompletedTask;
    }

    public override Task StartAsync(CancellationToken ct = default)
    {
        _schedulerCts = new CancellationTokenSource();
        _ = Task.Run(() => SchedulerLoopAsync(_schedulerCts.Token));
        return base.StartAsync(ct);
    }

    public override Task StopAsync()
    {
        _schedulerCts?.Cancel();
        return base.StopAsync();
    }

    /// <summary>
    /// Register a custom command.
    /// </summary>
    public void RegisterCommand(string name, Func<string[], Task> handler)
    {
        _commands[name.ToLower()] = handler;
        Log(LogLevel.Debug, $"Registered command: {name}");
    }

    /// <summary>
    /// Execute a command string.
    /// </summary>
    public async Task<CommandResult> ExecuteAsync(string commandLine)
    {
        var parts = commandLine.Split(' ', StringSplitOptions.RemoveEmptyEntries);
        if (parts.Length == 0)
            return new CommandResult(false, "Empty command");

        var cmdName = parts[0].ToLower();
        var args = parts.Skip(1).ToArray();

        if (!_commands.TryGetValue(cmdName, out var handler))
            return new CommandResult(false, $"Unknown command: {cmdName}");

        try
        {
            await handler(args);
            return new CommandResult(true, $"Command '{cmdName}' executed successfully");
        }
        catch (Exception ex)
        {
            return new CommandResult(false, $"Command error: {ex.Message}");
        }
    }

    /// <summary>
    /// Schedule a command to run periodically.
    /// </summary>
    public void ScheduleCommand(string name, string command, TimeSpan interval)
    {
        _scheduledTasks.Add(new ScheduledTask
        {
            Name = name,
            Command = command,
            Interval = interval,
            NextRun = DateTime.UtcNow + interval,
            IsEnabled = true
        });
        Log(LogLevel.Information, $"Scheduled '{name}' every {interval.TotalSeconds}s");
    }

    private void RegisterDefaultCommands()
    {
        RegisterCommand("status", async args =>
        {
            var state = Context.GetGameState();
            Log(LogLevel.Information, $"Status: {state.ConnectionState} | HP: {state.HP}/{state.MaxHP} | Pos: {state.Position}");
            await Task.CompletedTask;
        });

        RegisterCommand("heal", async args =>
        {
            Log(LogLevel.Information, "Executing heal command...");
            // TODO: Send heal skill/potion packet
            await Task.CompletedTask;
        });

        RegisterCommand("move", async args =>
        {
            if (args.Length < 2)
            {
                Log(LogLevel.Warning, "Usage: move <x> <y>");
                return;
            }
            Log(LogLevel.Information, $"Moving to ({args[0]}, {args[1]})...");
            await Task.CompletedTask;
        });

        RegisterCommand("stop", async args =>
        {
            Log(LogLevel.Information, "Stopping all actions...");
            await Task.CompletedTask;
        });

        RegisterCommand("help", async args =>
        {
            Log(LogLevel.Information, $"Available commands: {string.Join(", ", _commands.Keys)}");
            await Task.CompletedTask;
        });
    }

    private async Task SchedulerLoopAsync(CancellationToken ct)
    {
        while (!ct.IsCancellationRequested)
        {
            var now = DateTime.UtcNow;
            foreach (var task in _scheduledTasks.Where(t => t.IsEnabled && t.NextRun <= now))
            {
                await ExecuteAsync(task.Command);
                task.NextRun = now + task.Interval;
            }
            await Task.Delay(1000, ct);
        }
    }
}

public record CommandResult(bool Success, string Message);

public class ScheduledTask
{
    public string Name { get; set; } = string.Empty;
    public string Command { get; set; } = string.Empty;
    public TimeSpan Interval { get; set; }
    public DateTime NextRun { get; set; }
    public bool IsEnabled { get; set; }
}