using UnityEngine;
using UnityEngine.UI;
using TMPro;
using UnityEngine.SceneManagement;
using System.Collections;

public class LevelSelectController : MonoBehaviour
{
    [Header("━━━ UI ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")]
    public Button[] levelButtons;
    public TMP_Text[] levelNameTexts;
    public TMP_Text[] levelScoreTexts;

    [Header("━━━ BACK BUTONU ━━━━━━━━━━━━━━━━━━━━━━━")]
    public Button backButton;
    public string backSceneName = "Anamen";

    [Header("━━━ AUDIO ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")]
    public AudioSource sfxSource;
    public AudioClip clickSound;

    [Header("━━━ ANİMASYON ━━━━━━━━━━━━━━━━━━━━━━━━━")]
    [Range(0.005f, 0.1f)] public float buttonAniSpeed = 0.02f;

    private int langIndex;
    private Vector3[] originalScales;
    private Vector3[] originalPositions;

    // ============================================================
    private readonly string[,] levelNames = new string[,]
    {
        { "Temel Selamlaşma ve İnsanlar","Basic Greetings & People","Saludos Básicos y Personas","Grundbegrüßungen & Menschen","Salutations de Base & Personnes","Saudações Básicas e Pessoas" },
        { "Günlük Ev Nesneleri","Daily Household Items","Objetos del Hogar Diarios","Tägliche Haushaltsgegenstände","Objets Quotidiens de la Maison","Objetos Domésticos Diários" },
        { "Yiyecekler ve İçecekler","Food & Drinks","Comida y Bebida","Essen & Getränke","Nourriture & Boissons","Comidas e Bebidas" },
        { "Renkler, Şekiller ve Boyutlar","Colors, Shapes & Sizes","Colores, Formas y Tamaños","Farben, Formen & Größen","Couleurs, Formas & Tailles","Cores, Formas e Tamanhos" },
        { "Zaman, Günler ve Mevsimler","Time, Days & Seasons","Tiempo, Días y Estaciones","Zeit, Tage & Jahreszeiten","Temps, Jours & Saisons","Tempo, Dias e Estações" },
        { "Ev İçi Alanlar ve Temizlik","Home Areas & Cleaning","Áreas del Hogar y Limpieza","Hausbereiche & Reinigung","Espaces de Maison & Nettoyage","Áreas da Casa e Limpeza" },
        { "Okul, Eğitim ve Ders Araçları","School, Education & Supplies","Escuela, Educación y Útiles","Schule, Bildung & Materialien","École, Éducation & Fournitures","Escola, Educação e Materiais" },
        { "Vücut Parçaları ve Sağlık","Body Parts & Health","Partes del Cuerpo y Salud","Körperteile & Gesundheit","Parties du Corps & Santé","Partes do Corpo e Saúde" },
        { "Doğa, Hava ve Çevre Unsurları","Nature, Weather & Environment","Naturaleza, Clima y Medio Ambiente","Natur, Wetter & Umwelt","Nature, Météo & Environnement","Natureza, Clima e Meio Ambiente" },
        { "Evcil ve Vahşi Hayvanlar","Pets & Wild Animals","Mascotas y Animales Salvajes","Haustiere & Wildtiere","Animaux Domestiques & Sauvages","Animais Domésticos e Selvagens" },
        { "Ulaşım Araçları ve Trafik","Transportation & Traffic","Transporte y Tráfico","Transport & Verkehr","Transport & Circulation","Transporte e Trânsito" },
        { "Alışveriş ve Mağazalar","Shopping & Stores","Compras y Tiendas","Einkaufen & Geschäfte","Shopping & Magasins","Compras e Lojas" },
        { "Spor Dalları ve Ekipmanları","Sports & Equipment","Deportes y Equipamiento","Sportarten & Ausrüstung","Sports & Équipement","Esportes e Equipamentos" },
        { "Meslekler ve İş Alanları","Jobs & Work Fields","Profesiones y Áreas Laborales","Berufe & Arbeitsfelder","Métiers & Domaines de Travail","Profissões e Áreas de Trabalho" },
        { "Şehir, Yerler ve Binalar","City, Places & Buildings","Ciudad, Lugares y Edificios","Stadt, Orte & Gebäude","Ville, Lieux & Bâtiments","Cidade, Lugares e Edifícios" },
        { "Duygular, Durumlar ve Karakter","Emotions, States & Character","Emociones, Estados y Carácter","Gefühle, Zustände & Charakter","Émotions, États & Caractère","Emoções, Estados e Caráter" },
        { "Seyahat, Tatil ve Turizm","Travel, Vacation & Tourism","Viajes, Vacaciones y Turismo","Reisen, Urlaub & Tourismus","Voyage, Vacances & Tourisme","Viagem, Férias e Turismo" },
        { "Teknoloji, İnternet ve Cihazlar","Technology, Internet & Devices","Tecnología, Internet y Dispositivos","Technologie, Internet & Geräte","Technologie, Internet & Appareils","Tecnologia, Internet e Dispositivos" },
        { "Çevre Koruma ve Geri Dönüşüm","Environmental Protection & Recycling","Protección Ambiental y Reciclaje","Umweltschutz & Recycling","Protection de l'Environnement & Recyclage","Proteção Ambiental e Reciclagem" },
        { "İleri Günlük İfadeler ve İş Hayatı","Advanced Daily Phrases & Work Life","Frases Avanzadas y Vida Laboral","Fortgeschrittene Alltagssätze & Arbeitsleben","Phrases Avançées & Vie Professionnelle","Frases Avançadas e Vida Profissional" }
    };

    private readonly string[] scoreLabel =
    {
        "Puan","Score","Puntuación","Punkte","Score","Pontuação"
    };

    // ============================================================
    void Start()
    {
        string ansLang = PlayerPrefs.GetString("AnswerLangCode", "tr").ToLower();
        langIndex = GetLangIndex(ansLang);

        CacheButtonData();
        SetupLevelNames();
        LoadScoresToUI();
        BindButtons();

        // ─── Buton giriş animasyonu ───────────────
        for (int i = 0; i < levelButtons.Length; i++)
            StartCoroutine(ButtonEnterAnim(levelButtons[i], i));
    }

    // ============================================================
    int GetLangIndex(string code)
    {
        return code switch
        {
            "tr" => 0,
            "en" => 1,
            "es" => 2,
            "de" => 3,
            "fr" => 4,
            "pt" => 5,
            _ => 1
        };
    }

    // ============================================================
    void CacheButtonData()
    {
        if (levelButtons == null) return;
        originalScales = new Vector3[levelButtons.Length];
        originalPositions = new Vector3[levelButtons.Length];
        for (int i = 0; i < levelButtons.Length; i++)
        {
            if (levelButtons[i] == null) continue;
            originalScales[i] = levelButtons[i].transform.localScale;
            originalPositions[i] = levelButtons[i].transform.localPosition;
        }
    }

    // ============================================================
    void SetupLevelNames()
    {
        if (levelNameTexts == null) return;
        for (int i = 0; i < levelNameTexts.Length; i++)
            if (levelNameTexts[i] != null)
                levelNameTexts[i].text = levelNames[i, langIndex];
    }

    // ============================================================
    void BindButtons()
    {
        if (levelButtons == null) return;

        for (int i = 0; i < levelButtons.Length; i++)
        {
            if (levelButtons[i] == null) continue;
            int id = i + 1;
            levelButtons[i].onClick.RemoveAllListeners();
            levelButtons[i].onClick.AddListener(() =>
            {
                PlayClick();
                PlayerPrefs.SetInt("SelectedLevel", id);
                PlayerPrefs.Save();
                SceneManager.LoadScene("LLGameScene_Level");
            });
        }

        if (backButton != null)
            backButton.onClick.AddListener(() => { PlayClick(); SceneManager.LoadScene(backSceneName); });
    }

    // ============================================================
    void LoadScoresToUI()
    {
        if (levelScoreTexts == null) return;
        for (int i = 0; i < levelScoreTexts.Length; i++)
        {
            if (levelScoreTexts[i] == null) continue;
            int levelID = i + 1;
            int highScore = PlayerPrefs.GetInt("HighScore_Level_" + levelID, 0);

            if (highScore >= 2000)
            {
                levelScoreTexts[i].text = $"{scoreLabel[langIndex]}: 2000 / 2000";
                levelScoreTexts[i].color = Color.green;
            }
            else
            {
                levelScoreTexts[i].text = $"{scoreLabel[langIndex]}: {highScore} / 2000";
                levelScoreTexts[i].color = Color.red;
            }
        }
    }

    // ============================================================
    void PlayClick()
    {
        if (sfxSource != null && clickSound != null)
            sfxSource.PlayOneShot(clickSound);
    }

    // ============================================================
    // ANİMASYONLAR
    // ============================================================
    IEnumerator ButtonEnterAnim(Button btn, int delayIndex)
    {
        if (btn == null || originalScales == null) yield break;
        int idx = System.Array.IndexOf(levelButtons, btn);
        if (idx < 0 || idx >= originalScales.Length) yield break;

        yield return new WaitForSeconds(delayIndex * 0.08f);

        Vector3 targetPos = originalPositions[idx];
        Vector3 startPos = targetPos + Vector3.up * 60f;
        Vector3 targetScale = originalScales[idx];

        btn.transform.localPosition = startPos;
        btn.transform.localScale = Vector3.zero;

        float t = 0f;
        while (t < 1f)
        {
            t = Mathf.Min(t + buttonAniSpeed * 0.13f, 1f);
            float ease = EaseOutBack(t);
            btn.transform.localPosition = Vector3.Lerp(startPos, targetPos, ease);
            btn.transform.localScale = Vector3.Lerp(Vector3.zero, targetScale, ease);
            yield return null;
        }

        btn.transform.localPosition = targetPos;
        btn.transform.localScale = targetScale;
    }

    IEnumerator PunchScale(Button btn, int idx)
    {
        if (btn == null || originalScales == null) yield break;
        if (idx < 0 || idx >= originalScales.Length) yield break;
        Vector3 original = originalScales[idx];
        Vector3 big = original * 1.08f;
        float t = 0f;
        while (t < 1f) { t = Mathf.Min(t + 0.15f, 1f); btn.transform.localScale = Vector3.Lerp(original, big, EaseOutQuad(t)); yield return null; }
        t = 0f;
        while (t < 1f) { t = Mathf.Min(t + 0.12f, 1f); btn.transform.localScale = Vector3.Lerp(big, original, EaseOutQuad(t)); yield return null; }
        btn.transform.localScale = original;
    }

    // ============================================================
    float EaseOutBack(float t)
    {
        float c1 = 1.70158f;
        float c3 = c1 + 1f;
        return 1f + c3 * Mathf.Pow(t - 1f, 3f) + c1 * Mathf.Pow(t - 1f, 2f);
    }

    float EaseOutQuad(float t) => 1f - (1f - t) * (1f - t);
}