using Gungeon;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEngine;
using SGUI;

namespace UpForLastCommand
{
    public class Module : ETGModule
    {
        public static readonly string MOD_NAME = "up for last command";
        public static readonly string VERSION = "1.2.2.3,4,1.0";
        public static readonly string TEXT_COLOR = "#00FFFF";

        public override void Start()
        {
            SGroup console = ETGModConsole.Instance.GUI;

            STextField textField = null;

            foreach (SElement item in console.Children)
            {
                if (item is STextField field)
                {
                    textField = field;
                    break;
                }
            }
            if (textField != null)
            {
                textField.OnKey += OnKey;
                textField.OnSubmit += OnSubmit;
            }

            Log($"{MOD_NAME} v{VERSION} started successfully. press the up and down arrow keys to scroll through your last commands", TEXT_COLOR);
        }

        private List<string> lastCommands = new List<string>();
        private string lastVal = string.Empty;
        private int currentCommandIndex = -1;
        private void OnKey(STextField textField, bool keyDown, KeyCode keyCode)
        {
            if (textField != null && keyDown)
            {
                if (keyCode == KeyCode.UpArrow || keyCode == KeyCode.DownArrow)
                {
                    if (lastCommands.Count <= 0)
                    {
                        textField.Text = string.Empty;
                        return;
                    }

                    if (keyCode == KeyCode.UpArrow)
                    {
                        currentCommandIndex--;
                        if (currentCommandIndex <= 0)
                        {
                            currentCommandIndex = 0;
                        }
                    }
                    else if(keyCode == KeyCode.DownArrow)
                    {
                        currentCommandIndex++;
                        if (currentCommandIndex >= lastCommands.Count)
                        {
                            currentCommandIndex = lastCommands.Count - 1;
                        }
                    }

                    textField.Text = lastCommands[currentCommandIndex];
                }
            }
        }

        void OnSubmit(STextField elem, string text)
        {
            int lastIdx = lastCommands.Count - 1;

            if (text != string.Empty && (lastCommands.Count <= 0 || text != lastCommands[lastIdx]))
            {
                lastCommands.Add(text);
            }

            currentCommandIndex = lastCommands.Count;
        }
        public static void Log(string text, string color="#FFFFFF")
        {
            ETGModConsole.Log($"<color={color}>{text}</color>");
        }

        public override void Exit() { }
        public override void Init() { }
    }
}