/*
 * Copyright © 2014-2019 The Android Password Store Authors. All Rights Reserved.
 * SPDX-License-Identifier: GPL-3.0-only
 */
package com.zeapo.pwdstore;

import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.preference.PreferenceManager;
import androidx.recyclerview.widget.DividerItemDecoration;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.zeapo.pwdstore.utils.FolderRecyclerAdapter;
import com.zeapo.pwdstore.utils.PasswordItem;
import com.zeapo.pwdstore.utils.PasswordRepository;
import java.io.File;
import java.util.Stack;

/**
 * A fragment representing a list of Items.
 *
 * <p>Large screen devices (such as tablets) are supported by replacing the ListView with a
 * GridView.
 *
 * <p>
 */
public class SelectFolderFragment extends Fragment {

    // store the pass files list in a stack
    private Stack<File> pathStack;
    private FolderRecyclerAdapter recyclerAdapter;
    private RecyclerView recyclerView;
    private OnFragmentInteractionListener mListener;

    /**
     * Mandatory empty constructor for the fragment manager to instantiate the fragment (e.g. upon
     * screen orientation changes).
     */
    public SelectFolderFragment() {}

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        String path = getArguments().getString("Path");

        pathStack = new Stack<>();
        recyclerAdapter =
                new FolderRecyclerAdapter(
                        mListener,
                        PasswordRepository.getPasswords(
                                new File(path),
                                PasswordRepository.getRepositoryDirectory(requireActivity()),
                                getSortOrder()));
    }

    @Override
    public View onCreateView(
            @NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.password_recycler_view, container, false);

        // use a linear layout manager
        recyclerView = view.findViewById(R.id.pass_recycler);
        recyclerView.setLayoutManager(new LinearLayoutManager(requireContext()));

        // use divider
        recyclerView.addItemDecoration(
                new DividerItemDecoration(requireContext(), DividerItemDecoration.VERTICAL));

        // Set the adapter
        recyclerView.setAdapter(recyclerAdapter);
        FloatingActionButton fab = view.findViewById(R.id.fab);
        if (fab != null) fab.hide();

        registerForContextMenu(recyclerView);
        return view;
    }

    @Override
    public void onAttach(final Context context) {
        super.onAttach(context);
        try {
            mListener =
                    item -> {
                        if (item.getType() == PasswordItem.TYPE_CATEGORY) {
                            // push the category were we're going
                            pathStack.push(item.getFile());

                            recyclerView.scrollToPosition(0);
                            recyclerAdapter.clear();
                            recyclerAdapter.addAll(
                                    PasswordRepository.getPasswords(
                                            item.getFile(),
                                            PasswordRepository.getRepositoryDirectory(context),
                                            getSortOrder()));

                            ((AppCompatActivity) requireActivity())
                                    .getSupportActionBar()
                                    .setDisplayHomeAsUpEnabled(true);
                        }
                    };
        } catch (ClassCastException e) {
            throw new ClassCastException(
                    context.toString() + " must implement OnFragmentInteractionListener");
        }
    }

    /**
     * gets the current directory
     *
     * @return the current directory
     */
    public File getCurrentDir() {
        if (pathStack.isEmpty()) return PasswordRepository.getRepositoryDirectory(requireContext());
        else return pathStack.peek();
    }

    private PasswordRepository.PasswordSortOrder getSortOrder() {
        return PasswordRepository.PasswordSortOrder.getSortOrder(
                PreferenceManager.getDefaultSharedPreferences(requireContext()));
    }

    public interface OnFragmentInteractionListener {
        void onFragmentInteraction(PasswordItem item);
    }
}