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

public class PuzzleManager : MonoBehaviour
{
    [Header("Panel Bayangan (Kiri)")]
    public Image imgBayangan;
    public TextMeshProUGUI textNama;
    public RectTransform dropZoneRect;

    [Header("Panel Jawaban (Kanan)")]
    public Image img1, img2, img3;

    [Header("Panel Popup")]
    public GameObject panelPopup;
    public Image imgStiker;
    public Sprite stikerBenar;
    public Sprite stikerSalah;

    [Header("Panel Hasil")]
    public GameObject panelHasil;
    public TextMeshProUGUI textPesan;
    public TextMeshProUGUI textSkor;
    public Button btnUlang, btnMenu;
    public Image imgStikerHasil;
    public Sprite stikerHasilBagus;
    public Sprite stikerHasilKurang;

    [Header("Navigasi")]
    public Button btnHome;

    [Header("Skor Live")]
    public TextMeshProUGUI textSkorLive;

    private struct DataKarakter
    {
        public string namaFile;
        public string namaLabel;
        public string folder;

        public DataKarakter(string file, string label, string folder)
        {
            this.namaFile = file;
            this.namaLabel = label;
            this.folder = folder;
        }
    }

    private List<DataKarakter> semuaKarakter = new List<DataKarakter>()
    {
        // Hewan
        new DataKarakter("anjing",    "Anjing",     "hewan"),
        new DataKarakter("ayam",      "Ayam",       "hewan"),
        new DataKarakter("babi",      "Babi",       "hewan"),
        new DataKarakter("bebek",     "Bebek",      "hewan"),
        new DataKarakter("buaya",     "Buaya",      "hewan"),
        new DataKarakter("burung",    "Burung",     "hewan"),
        new DataKarakter("gajah",     "Gajah",      "hewan"),
        new DataKarakter("harimau",   "Harimau",    "hewan"),
        new DataKarakter("ikan",      "Ikan",       "hewan"),
        new DataKarakter("jerapah",   "Jerapah",    "hewan"),
        new DataKarakter("kambing",   "Kambing",    "hewan"),
        new DataKarakter("katak",     "Katak",      "hewan"),
        new DataKarakter("kelinci",   "Kelinci",    "hewan"),
        new DataKarakter("kepiting",  "Kepiting",   "hewan"),
        new DataKarakter("kucing",    "Kucing",     "hewan"),
        new DataKarakter("kupu-kupu", "Kupu-kupu",  "hewan"),
        new DataKarakter("kura",      "Kura-kura",  "hewan"),
        new DataKarakter("landak",    "Landak",     "hewan"),
        new DataKarakter("lebah",     "Lebah",      "hewan"),
        new DataKarakter("rubah",     "Rubah",      "hewan"),
        new DataKarakter("rusa",      "Rusa",       "hewan"),
        new DataKarakter("sapi",      "Sapi",       "hewan"),
        new DataKarakter("singa",     "Singa",      "hewan"),
        new DataKarakter("ular",      "Ular",       "hewan"),
        new DataKarakter("ulat",      "Ulat",       "hewan"),
        new DataKarakter("zebra",     "Zebra",      "hewan"),

        // Buah
        new DataKarakter("apel",      "Apel",       "buah"),
        new DataKarakter("alpukat",   "Alpukat",    "buah"),
        new DataKarakter("anggur",    "Anggur",     "buah"),
        new DataKarakter("blueberry", "Blueberry",  "buah"),
        new DataKarakter("ceri",      "Ceri",       "buah"),
        new DataKarakter("durian",    "Durian",     "buah"),
        new DataKarakter("jeruk",     "Jeruk",      "buah"),
        new DataKarakter("kelapa",    "Kelapa",     "buah"),
        new DataKarakter("kiwi",      "Kiwi",       "buah"),
        new DataKarakter("lemon",     "Lemon",      "buah"),
        new DataKarakter("lychee",    "Lychee",     "buah"),
        new DataKarakter("mangga",    "Mangga",     "buah"),
        new DataKarakter("manggis",   "Manggis",    "buah"),
        new DataKarakter("melon",     "Melon",      "buah"),
        new DataKarakter("nanas",     "Nanas",      "buah"),
        new DataKarakter("pepaya",    "Pepaya",     "buah"),
        new DataKarakter("pir",       "Pir",        "buah"),
        new DataKarakter("pisang",    "Pisang",     "buah"),
        new DataKarakter("rambutan",  "Rambutan",   "buah"),
        new DataKarakter("semangka",  "Semangka",   "buah"),
        new DataKarakter("strawberry","Strawberry", "buah"),
    };

    private Vector2[] posisiAsal = new Vector2[3];
    private Transform panelJawaban;
    private List<int> urutanSoal = new List<int>();
    private int indexSoal = 0;
    private int totalSoal = 8;
    private int skorBenar = 0;
    private int jawabanBenarIndex;
    private AudioSource audioSource;

    void Start()
    {
        audioSource = GetComponent<AudioSource>();
        if (audioSource == null)
            audioSource = gameObject.AddComponent<AudioSource>();

        panelHasil.SetActive(false);
        panelPopup.SetActive(false);

        btnHome.onClick.RemoveAllListeners();
        btnHome.onClick.AddListener(() => SceneManager.LoadScene("MainMenu"));

        btnUlang.onClick.RemoveAllListeners();
        btnMenu.onClick.RemoveAllListeners();
        btnUlang.onClick.AddListener(() => SceneManager.LoadScene("Puzzle"));
        btnMenu.onClick.AddListener(() => SceneManager.LoadScene("MainMenu"));

        Image[] imgs = { img1, img2, img3 };
        panelJawaban = img1.transform.parent;
        for (int i = 0; i < 3; i++)
            posisiAsal[i] = imgs[i].GetComponent<RectTransform>().anchoredPosition;

        UpdateSkorLive();
        BuatUrutanSoal();
        TampilkanSoal();
    }

    void UpdateSkorLive()
    {
        if (textSkorLive != null)
            textSkorLive.text = "Skor : " + skorBenar;
    }

    void BuatUrutanSoal()
    {
        List<int> semua = new List<int>();
        for (int i = 0; i < semuaKarakter.Count; i++)
            semua.Add(i);

        for (int i = semua.Count - 1; i > 0; i--)
        {
            int r = Random.Range(0, i + 1);
            int tmp = semua[i];
            semua[i] = semua[r];
            semua[r] = tmp;
        }

        totalSoal = Mathf.Min(totalSoal, semua.Count);
        for (int i = 0; i < totalSoal; i++)
            urutanSoal.Add(semua[i]);
    }

    void ResetPosisiGambar()
    {
        Image[] imgs = { img1, img2, img3 };
        for (int i = 0; i < 3; i++)
        {
            imgs[i].transform.SetParent(panelJawaban, false);
            imgs[i].GetComponent<RectTransform>().anchoredPosition = posisiAsal[i];
            imgs[i].gameObject.SetActive(true);

            DragItem d = imgs[i].GetComponent<DragItem>();
            if (d != null) Destroy(d);
        }
    }

    void TampilkanSoal()
    {
        if (indexSoal >= totalSoal)
        {
            TampilkanHasil();
            return;
        }

        ResetPosisiGambar();

        jawabanBenarIndex = urutanSoal[indexSoal];
        DataKarakter karakter = semuaKarakter[jawabanBenarIndex];

        Sprite spBayangan = Resources.Load<Sprite>("Gambar/" + karakter.folder + "/" + karakter.namaFile);
        if (spBayangan != null)
        {
            imgBayangan.sprite = spBayangan;
            imgBayangan.color = Color.black;
        }
        else
            Debug.LogWarning("⚠️ Bayangan tidak ditemukan: Gambar/" + karakter.folder + "/" + karakter.namaFile);

        textNama.text = karakter.namaLabel;

        List<int> pilihan = BuatPilihan(jawabanBenarIndex);
        Image[] imgs = { img1, img2, img3 };

        for (int i = 0; i < 3; i++)
        {
            int idx = pilihan[i];
            DataKarakter k = semuaKarakter[idx];

            Sprite sp = Resources.Load<Sprite>("Gambar/" + k.folder + "/" + k.namaFile);
            if (sp != null)
            {
                imgs[i].sprite = sp;
                imgs[i].color = Color.white;
            }
            else
                Debug.LogWarning("⚠️ Gambar tidak ditemukan: Gambar/" + k.folder + "/" + k.namaFile);

            DragItem drag = imgs[i].gameObject.AddComponent<DragItem>();
            drag.indexHewan = idx;
            drag.puzzleManager = this;
            drag.dropZoneRect = dropZoneRect;
        }

        Debug.Log("📝 Soal " + (indexSoal + 1) + ": " + karakter.namaLabel + " (" + karakter.folder + ")");
    }

    List<int> BuatPilihan(int idxBenar)
    {
        DataKarakter k = semuaKarakter[idxBenar];

        List<int> pilihan = new List<int>();
        pilihan.Add(idxBenar);

        List<int> salah = new List<int>();
        for (int i = 0; i < semuaKarakter.Count; i++)
            if (i != idxBenar && semuaKarakter[i].folder == k.folder)
                salah.Add(i);

        if (salah.Count < 2)
        {
            for (int i = 0; i < semuaKarakter.Count; i++)
                if (i != idxBenar && !salah.Contains(i))
                    salah.Add(i);
        }

        for (int i = salah.Count - 1; i > 0; i--)
        {
            int r = Random.Range(0, i + 1);
            int tmp = salah[i]; salah[i] = salah[r]; salah[r] = tmp;
        }

        pilihan.Add(salah[0]);
        pilihan.Add(salah[1]);

        for (int i = pilihan.Count - 1; i > 0; i--)
        {
            int r = Random.Range(0, i + 1);
            int tmp = pilihan[i]; pilihan[i] = pilihan[r]; pilihan[r] = tmp;
        }

        return pilihan;
    }

    public void CekJawaban(DragItem dragItem)
    {
        bool benar = (dragItem.indexHewan == jawabanBenarIndex);

        if (benar)
        {
            skorBenar += 10;
            UpdateSkorLive();
            dragItem.SetBenar();

            DataKarakter k = semuaKarakter[jawabanBenarIndex];
            Sprite spBerwarna = Resources.Load<Sprite>("Gambar/" + k.folder + "/" + k.namaFile);
            if (spBerwarna != null)
            {
                imgBayangan.sprite = spBerwarna;
                imgBayangan.color = Color.white;
            }

            img1.gameObject.SetActive(false);
            img2.gameObject.SetActive(false);
            img3.gameObject.SetActive(false);

            StartCoroutine(TampilkanPopupDanLanjut(true));
        }
        else
        {
            dragItem.KembaliKePosisiAsal();
            StartCoroutine(TampilkanPopupDanLanjut(false));
        }
    }

    IEnumerator TampilkanPopupDanLanjut(bool benar)
    {
        panelPopup.SetActive(true);
        imgStiker.sprite = benar ? stikerBenar : stikerSalah;

        string namaAudio = benar ? "Audio/suara_benar" : "Audio/suara_salah";
        AudioClip clip = Resources.Load<AudioClip>(namaAudio);
        if (clip != null)
        {
            audioSource.PlayOneShot(clip);
            yield return new WaitForSeconds(clip.length);
        }
        else
            yield return new WaitForSeconds(1f);

        panelPopup.SetActive(false);
        indexSoal++;
        TampilkanSoal();
    }

    void TampilkanHasil()
    {
        panelHasil.SetActive(true);

        int skorMax = totalSoal * 10;
        textSkor.text = "Skor Akhir : " + skorBenar + " / " + skorMax;

        // Batas bagus: >= 50 (lebih dari separuh benar dari 8 soal)
        bool skorBagus = skorBenar >= 50;

        if (textPesan != null)
            textPesan.text = skorBagus
                ? "Hebat! Kamu Luar Biasa!"
                : "Jangan Menyerah! Coba Lagi!";

        if (imgStikerHasil != null)
        {
            Sprite stikerDipilih = skorBagus ? stikerHasilBagus : stikerHasilKurang;
            if (stikerDipilih != null)
                imgStikerHasil.sprite = stikerDipilih;
            else
                Debug.LogWarning("⚠️ Sprite stiker hasil belum di-assign di Inspector!");
        }
    }

    public void KembaliKeMenu()
    {
        SceneManager.LoadScene("MainMenu");
    }
}