using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;
using UnityEngine.UI;
using System.IO;
using AibisDream.FixSystem;
using Cinemachine;
using AibisDream.Framework;

namespace AibisDream
{
    public class ExpressionManager : MonoBehaviour
    {
        public GameObject expressView;
        public Slider[] sliders; // A, P, R, E, T
        public TMP_Text totalPointsText;
        public int totalPoints = 10;

        public TMP_Text driverSlotText;
        public TMP_Text logOutput;
        public Button matchButton;

        public GameObject matchResultsPanel;
        public GameObject driverButtonPrefab;

        private int[] valuesCurrent = new int[5];
        private DriverProfile currentDriver = null;
        private DriverDatabase db = new DriverDatabase();
        private List<GameObject> currentResultButtons = new List<GameObject>();

        void Start()
        {
            FixSystemCenter.SystemDic.Register(this);
            var virtualCam = transform.Find("Expression Camera").GetComponent<ICinemachineCamera>();
            CameraKit.Instance.RegisterCamera(CameraEnum.Expression, virtualCam);

            db.LoadFromCSV(Path.Combine(Application.streamingAssetsPath, "drivers.csv"));

            for (int i = 0; i < sliders.Length; i++)
            {
                int index = i;
                Transform plus = sliders[i].transform.Find("Plus");
                if (plus != null && plus.TryGetComponent(out Button plusBtn))
                    plusBtn.onClick.AddListener(() => AdjustValue(index, 1));
                Transform minus = sliders[i].transform.Find("Minus");
                if (minus != null && minus.TryGetComponent(out Button minusBtn))
                    minusBtn.onClick.AddListener(() => AdjustValue(index, -1));
            }

            matchButton.onClick.AddListener(MatchDriver);
            UpdateUI();
        }
        public void OpenView()
        {
            expressView.SetActive(true);
        }
        public void CloseView()
        {
            expressView.SetActive(false);
        }

        void AdjustValue(int index, int delta)
        {
            if (delta > 0 && totalPoints <= 0) return;
            if (delta < 0 && valuesCurrent[index] <= 0) return;
            if (valuesCurrent[index] + delta > 5) return;

            valuesCurrent[index] += delta;
            totalPoints -= delta;
            CheckDriverStillValid();
            UpdateUI();
        }

        void UpdateUI()
        {
            for (int i = 0; i < sliders.Length; i++)
            {
                sliders[i].value = valuesCurrent[i];
                Transform valueTextTransform = sliders[i].transform.Find("Value");
                if (valueTextTransform != null && valueTextTransform.TryGetComponent(out TMP_Text valueText))
                    valueText.text = valuesCurrent[i].ToString();
            }
            totalPointsText.text = $"Points Left: {totalPoints}";
        }

        void MatchDriver()
        {
            currentResultButtons.ForEach(btn => Destroy(btn));
            currentResultButtons.Clear();

            var matches = db.MatchDrivers(
                valuesCurrent[0], valuesCurrent[1],
                valuesCurrent[2], valuesCurrent[3],
                valuesCurrent[4]);

            if (matches.Count > 0)
            {
                matchResultsPanel.SetActive(true);
                foreach (var driver in matches)
                {
                    var btnObj = Instantiate(driverButtonPrefab, matchResultsPanel.transform);
                    var text = btnObj.GetComponentInChildren<TMP_Text>();
                    if (text) text.text = driver.Name;
                    var btn = btnObj.GetComponent<Button>();
                    if (btn) btn.onClick.AddListener(() => SelectDriver(driver));
                    currentResultButtons.Add(btnObj);
                }
                logOutput.text = $"共找到 {matches.Count} 个可用驱动，请选择。";
            }
            else
            {
                matchResultsPanel.SetActive(false);
                currentDriver = null;
                driverSlotText.text = "No Driver";
                logOutput.text = "没有找到匹配的驱动。";
            }
        }

        void SelectDriver(DriverProfile driver)
        {
            currentDriver = driver;
            driverSlotText.text = $"Driver: {driver.Name}";
            logOutput.text = $"[YARN] Loading: {driver.YarnFile}";
            matchResultsPanel.SetActive(false);
        }

        void CheckDriverStillValid()
        {
            if (currentDriver != null && !currentDriver.Matches(
                valuesCurrent[0], valuesCurrent[1],
                valuesCurrent[2], valuesCurrent[3],
                valuesCurrent[4]))
            {
                currentDriver = null;
                driverSlotText.text = "No Driver";
                logOutput.text = "当前驱动与属性不匹配，已卸载。";
            }
        }
    }
}