package com.example.citrusclient.views;

import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageButton;
import android.widget.TextView;

import com.example.citrusclient.Citrus;
import com.example.citrusclient.R;
import com.example.citrusclient.models.Book;
import com.example.citrusclient.viewmodels.BooksViewModel;
import com.example.citrusclient.viewmodels.FavoritesViewModel;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.ResourceBundle;

import androidx.annotation.NonNull;
import androidx.fragment.app.FragmentActivity;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.RecyclerView;

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private List<Book> originalList; // 元のデータリスト
    private List<Book> filteredList; // フィルタリングされたリスト
    private HashMap<String, HashSet<Integer>> favoritesMap = new HashMap<>();
    private HashSet<String> favoritedMap;


    public MyAdapter(List<Book> originalList) {
        this.originalList = originalList;
        this.filteredList = new ArrayList<>(originalList);
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.a_public_book, parent, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        Book currentBook = filteredList.get(position);
        holder.bind(currentBook); // bindメソッドで設定
        Context context = holder.itemView.getContext();
        Activity activity = (Activity) context;
        Citrus citrus = (Citrus) activity.getApplication();
        BooksViewModel booksViewModel = new ViewModelProvider((FragmentActivity)context).get(BooksViewModel.class);
        FavoritesViewModel favoritesViewModel = new ViewModelProvider((FragmentActivity)context).get(FavoritesViewModel.class);

        // 背景色の設定
        int red, green, blue;
        if (currentBook.getColor() == null || currentBook.getColor().length() < 7) {
            red = 255; green = 255; blue = 255;
        } else {
            red = Integer.parseInt(currentBook.getColor().substring(1, 3), 16);
            green = Integer.parseInt(currentBook.getColor().substring(3, 5), 16);
            blue = Integer.parseInt(currentBook.getColor().substring(5, 7), 16);
        }
        holder.titleTextView.setBackgroundColor(Color.rgb(red, green, blue));
        holder.titleTextView.setTextColor(Color.rgb(255 - red, 255 - green, 255 - blue));
        holder.titleTextView.setOnClickListener(v -> {
            citrus.setCurLookingAccountId(currentBook.getAccountId());
            citrus.setCurLookingBookId(currentBook.getBookId());
            Calendar calendar = Calendar.getInstance();
            citrus.setCurYear(calendar.get(Calendar.YEAR));
            citrus.setCurMonth(calendar.get(Calendar.MONTH) + 1);
            citrus.setCurDay(calendar.get(Calendar.DATE));
            ((MainActivity) activity).showFragment(new OtherHomeFragment());
        });

        if (favoritesMap != null && favoritesMap.containsKey(currentBook.getAccountId())) {
            if (favoritesMap.get(currentBook.getAccountId()).contains(currentBook.getBookId())) {
                holder.LikeTextView.setImageResource(R.drawable.baseline_favorite_24);
                holder.LikeTextView.setTag("liked");
            } else {
                holder.LikeTextView.setImageResource(R.drawable.baseline_favorite_border_24);
                holder.LikeTextView.setTag("unliked");
            }
        } else {
            holder.LikeTextView.setImageResource(R.drawable.baseline_favorite_border_24);
            holder.LikeTextView.setTag("unliked");
        }

        holder.LikeTextView.setOnClickListener(view -> {
            System.out.println(holder.LikeTextView.getTag());
            if(holder.LikeTextView.getTag().equals("unliked")){
                System.out.println(citrus.getAccountId()+"が"+currentBook.getAccountId()+"の"+currentBook.getBookId()+"を登録しました");

                booksViewModel.registerFavoriteCount(currentBook.getAccountId(), currentBook.getBookId());
                holder.LikedCountTextView.setText(context.getString(R.string.liked_count_format, currentBook.getFavoritedCount()));

                favoritesViewModel.setFavorite(currentBook.getAccountId(), currentBook.getBookId(), citrus.getAccountId(), citrus.getToken());
                holder.LikeTextView.setImageResource(R.drawable.baseline_favorite_24);
                Animation animation = AnimationUtils.loadAnimation(holder.itemView.getContext(),R.anim.touch);
                view.startAnimation(animation);
                holder.LikeTextView.setTag("liked");
                if(!favoritesMap.containsKey(currentBook.getAccountId())) {
                    favoritesMap.put(currentBook.getAccountId(), new HashSet<>());
                }
                favoritesMap.get(currentBook.getAccountId()).add(currentBook.getBookId());
                currentBook.setFavoritedCount(currentBook.getFavoritedCount()+1);
            }else if(holder.LikeTextView.getTag().equals("liked")){
                System.out.println(citrus.getAccountId()+"が"+currentBook.getAccountId()+"の"+currentBook.getBookId()+"を解除しました");
                booksViewModel.unregisterFavoriteCount(currentBook.getAccountId(), currentBook.getBookId());
                holder.LikedCountTextView.setText(context.getString(R.string.liked_count_format, currentBook.getFavoritedCount()));
                favoritesViewModel.deletefavorite(currentBook.getAccountId(), currentBook.getBookId(), citrus.getAccountId(), citrus.getToken());
                holder.LikeTextView.setImageResource(R.drawable.baseline_favorite_border_24);
                holder.LikeTextView.setTag("unliked");
                favoritesMap.get(currentBook.getAccountId()).remove(currentBook.getBookId());
                currentBook.setFavoritedCount(currentBook.getFavoritedCount()-1);
            }
            holder.LikedCountTextView.setText(context.getString(R.string.liked_count_format, currentBook.getFavoritedCount()));
        });
    }

    @Override
    public int getItemCount() {
        return filteredList != null ? filteredList.size() : 0; // filteredListがnullの場合は0を返す
    }
    // 新しいデータを設定するメソッド
    public void setBooks(List<Book> books) {
        originalList.clear();
        originalList.addAll(books);
        filteredList.clear(); // フィルタリングされたリストもクリア
        filteredList.addAll(originalList); // 元のリストの内容を追加
        notifyDataSetChanged(); // アダプターを更新
    }

    // フィルタリングメソッド
    public void filter(String query) {
        filteredList.clear();
        if (query.isEmpty()) {
            filteredList.addAll(originalList);
        } else {
            String lowerCaseQuery = query.toLowerCase().trim();
            for (Book item : originalList) {
                if (item.getAccountId().toLowerCase().contains(lowerCaseQuery) ||
                        item.getTitle().toLowerCase().contains(lowerCaseQuery)) {
                    filteredList.add(item);
                }
            }
        }
        notifyDataSetChanged();
    }
    public void updateFavorites(HashMap<String, HashSet<Integer>> newFavorites){
        this.favoritesMap = newFavorites;
        notifyDataSetChanged();
    }

    public void updateFavorited(HashSet<String> likedBooksCount) {
        this.favoritedMap = likedBooksCount;
        notifyDataSetChanged(); // アダプターを更新
    }

    static class ViewHolder extends RecyclerView.ViewHolder {
        TextView titleTextView;
        TextView authorTextView;
        ImageButton LikeTextView;
        TextView LikedCountTextView;


        ViewHolder(View itemView) {
            super(itemView);
            titleTextView = itemView.findViewById(R.id.public_button);
            authorTextView = itemView.findViewById(R.id.public_id);
            LikeTextView = itemView.findViewById(R.id.public_favorite);
            LikedCountTextView = itemView.findViewById(R.id.liketed_count);
        }

        void bind(Book book) {
            titleTextView.setText(book.getTitle());
            authorTextView.setText(book.getAccountId());
            Context context = itemView.getContext();
            LikedCountTextView.setText(context.getString(R.string.liked_count_format, book.getFavoritedCount()));
        }
    }
}