using System.Collections;
using UnityEngine;
using TMPro; // TextMeshPro
using UnityEngine.SceneManagement;
using ArcadeVP;

public class GameManager : MonoBehaviour
{
    public static GameManager Instance { get; private set; }

    [Header("Level Settings")]
    public string locationName = "the Downtown Bank";
    public float startingStolenMoney = 50000f;
    [Tooltip("How much money is lost for every 1 point of damage the player takes.")]
    public float moneyLostPerHitMultiplier = 100f;

    [Header("Text Templates")]
    [TextArea]
    public string introTextTemplate = "You have robbed {0} and stole ${1:N0}.\nReach your safe point.";
    [TextArea]
    public string successTextTemplate = "You successfully escaped {0}!\nYou safely secured ${1:N0}!\nTotal Cash Pile: ${2:N0}";
    [TextArea]
    public string raidedTextTemplate = "SAFE HOUSE RAIDED!\nYou led the cops right to your front door after robbing {0}.\nAll previously collected money has been seized by the police.";
    [TextArea]
    public string bustedTextTemplate = "BUSTED!\nYou were pinned by the police and arrested.\nAll previously collected money has been seized.";

    [Header("Current State (Read Only)")]
    public float currentStolenMoney;
    public float totalCashPile;
    public bool isGameOver = false;
    public bool isGameActive = false; // Controls player and AI input

    [Header("UI References")]
    [Tooltip("A UI Panel with an Image component set to Black to fade in from.")]
    public CanvasGroup fadePanel;
    [Tooltip("The text element showing the intro text.")]
    public TextMeshProUGUI introText;
    
    [Space(10)]
    public TextMeshProUGUI moneyDisplay;

    [Space(10)]
    public GameObject gameOverPanel;
    
    [Space(10)]
    public GameObject levelCompletePanel;
    public TextMeshProUGUI levelCompleteTitle;
    public TextMeshProUGUI levelCompleteDetails;

    private void Awake()
    {
        if (Instance == null)
        {
            Instance = this;
        }
        else
        {
            Destroy(gameObject);
        }
    }

    private void Start()
    {
        // Load persistent cash pile from previous levels
        totalCashPile = PlayerPrefs.GetFloat("TotalCashPile", 0f);
        currentStolenMoney = startingStolenMoney;
        isGameOver = false;
        isGameActive = false; // Disable controls during intro

        // Initialize UI panels
        if (gameOverPanel) gameOverPanel.SetActive(false);
        if (levelCompletePanel) levelCompletePanel.SetActive(false);
        UpdateMoneyDisplay();

        StartCoroutine(IntroSequence());
    }

    private IEnumerator IntroSequence()
    {
        if (fadePanel == null || introText == null) yield break;

        // Set screen to black
        fadePanel.alpha = 1f;
        fadePanel.gameObject.SetActive(true);
        introText.gameObject.SetActive(true);
        
        // Setup intro text using the template
        introText.text = string.Format(introTextTemplate, locationName, startingStolenMoney);
        
        // Set text alpha to 0 manually
        Color c = introText.color;
        c.a = 0f;
        introText.color = c;

        // Fade out black screen
        float t = 0f;
        while (t < 1f)
        {
            t += Time.deltaTime * 0.5f;
            fadePanel.alpha = Mathf.Lerp(1f, 0f, t);
            yield return null;
        }
        
        fadePanel.blocksRaycasts = false;

        // Fade IN text
        t = 0f;
        while (t < 1f)
        {
            t += Time.deltaTime * 0.8f;
            c.a = Mathf.Lerp(0f, 1f, t);
            introText.color = c;
            yield return null;
        }

        yield return new WaitForSeconds(4f); 
        
        // Fade OUT text
        t = 0f;
        while (t < 1f)
        {
            t += Time.deltaTime * 0.8f;
            c.a = Mathf.Lerp(1f, 0f, t);
            introText.color = c;
            yield return null;
        }

        introText.gameObject.SetActive(false);
        isGameActive = true; // Give control back to player and AI
    }

    public void OnPlayerHit(float damageTaken)
    {
        if (isGameOver || !isGameActive) return;

        float moneyToLose = damageTaken * moneyLostPerHitMultiplier;
        currentStolenMoney -= moneyToLose;

        if (currentStolenMoney < 0) currentStolenMoney = 0;

        UpdateMoneyDisplay();
    }

    public void GameOver()
    {
        if (isGameOver) return;
        isGameOver = true;
        isGameActive = false;

        if (gameOverPanel != null)
        {
            gameOverPanel.SetActive(true);
        }
    }

    public void Busted()
    {
        if (isGameOver) return;
        isGameOver = true;
        isGameActive = false;

        // Lose all money
        totalCashPile = 0f;
        PlayerPrefs.SetFloat("TotalCashPile", 0f);
        PlayerPrefs.Save();

        // Show the level complete panel but with the Busted text
        if (levelCompletePanel != null)
        {
            levelCompletePanel.SetActive(true);
        }

        if (levelCompleteTitle)
        {
            levelCompleteTitle.text = "BUSTED!";
            levelCompleteTitle.color = Color.red;
        }
        if (levelCompleteDetails)
        {
            levelCompleteDetails.text = bustedTextTemplate;
        }
    }

    public void EnterSafeHouse()
    {
        if (isGameOver) return;
        isGameOver = true;
        isGameActive = false;

        // Determine if cops are actively chasing (Ignore searching if player is hidden)
        bool isBeingChased = false;
        
        AIController[] allAI = FindObjectsByType<AIController>(FindObjectsInactive.Exclude);
        foreach (AIController ai in allAI)
        {
            if (ai.currentState == AIController.AIState.Pursue)
            {
                isBeingChased = true;
                break; 
            }
        }

        // Show End Screen
        if (levelCompletePanel != null)
        {
            levelCompletePanel.SetActive(true);
        }

        if (isBeingChased)
        {
            // RAIDED - Lost all collected money
            totalCashPile = 0f;
            PlayerPrefs.SetFloat("TotalCashPile", 0f); // Wipe the save file

            if (levelCompleteTitle)
            {
                levelCompleteTitle.text = "BUSTED!";
                levelCompleteTitle.color = Color.red;
            }
            if (levelCompleteDetails)
            {
                levelCompleteDetails.text = string.Format(raidedTextTemplate, locationName);
            }
        }
        else
        {
            // SUCCESS - Keep the loot
            totalCashPile += currentStolenMoney;
            PlayerPrefs.SetFloat("TotalCashPile", totalCashPile);

            if (levelCompleteTitle)
            {
                levelCompleteTitle.text = "ESCAPE SUCCESSFUL";
                levelCompleteTitle.color = Color.green;
            }
            if (levelCompleteDetails)
            {
                levelCompleteDetails.text = string.Format(successTextTemplate, locationName, currentStolenMoney, totalCashPile);
            }
        }
        
        PlayerPrefs.Save();
    }

    private void UpdateMoneyDisplay()
    {
        if (moneyDisplay != null)
        {
            moneyDisplay.text = $"Loot: ${currentStolenMoney:N0}";
        }
    }

    // --- BUTTON METHODS ---

    public void RestartLevel()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
    }

    public void QuitGame()
    {
        Application.Quit();
        #if UNITY_EDITOR
        UnityEditor.EditorApplication.isPlaying = false;
        #endif
    }
}