FairEmail/app/src/main/java/eu/faircode/email/FragmentAnswer.java

package eu.faircode.email;

/*
    This file is part of FairEmail.

    FairEmail is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    FairEmail is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with FairEmail.  If not, see <http://www.gnu.org/licenses/>.

    Copyright 2018-2019 by Marcel Bokhorst (M66B)
*/

import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.text.Spanned;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.constraintlayout.widget.Group;

import com.google.android.material.bottomnavigation.BottomNavigationView;

public class FragmentAnswer extends FragmentBase {
    private ViewGroup view;
    private EditText etName;
    private CheckBox cbHide;
    private EditText etText;
    private ImageButton ibInfo;
    private BottomNavigationView bottom_navigation;
    private ContentLoadingProgressBar pbWait;
    private Group grpReady;

    private long id = -1;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Get arguments
        Bundle args = getArguments();
        id = (args == null ? -1 : args.getLong("id", -1));
    }

    @Override
    @Nullable
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        setSubtitle(R.string.title_answer_caption);

        view = (ViewGroup) inflater.inflate(R.layout.fragment_answer, container, false);

        // Get controls
        etName = view.findViewById(R.id.etName);
        cbHide = view.findViewById(R.id.cbHide);
        etText = view.findViewById(R.id.etText);
        ibInfo = view.findViewById(R.id.ibInfo);

        bottom_navigation = view.findViewById(R.id.bottom_navigation);

        pbWait = view.findViewById(R.id.pbWait);
        grpReady = view.findViewById(R.id.grpReady);

        ibInfo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Spanned spanned = HtmlHelper.fromHtml("<p>" +
                        getString(R.string.title_answer_template_name) +
                        "<br>" +
                        getString(R.string.title_answer_template_email) +
                        "</p>");

                View dview = LayoutInflater.from(getContext()).inflate(R.layout.dialog_message, null);
                TextView tvMessage = dview.findViewById(R.id.tvMessage);

                tvMessage.setText(spanned);

                new DialogBuilderLifecycle(getContext(), getViewLifecycleOwner())
                        .setView(dview)
                        .show();
            }
        });

        bottom_navigation.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
                switch (menuItem.getItemId()) {
                    case R.id.action_delete:
                        onActionDelete();
                        return true;
                    case R.id.action_save:
                        onActionSave();
                        return true;
                    default:
                        return false;
                }
            }
        });

        // Initialize
        grpReady.setVisibility(View.GONE);
        pbWait.setVisibility(View.VISIBLE);

        return view;
    }

    @Override
    public void onActivityCreated(@Nullable final Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        Bundle args = new Bundle();
        args.putLong("id", id);

        new SimpleTask<EntityAnswer>() {
            @Override
            protected EntityAnswer onExecute(Context context, Bundle args) {
                long id = args.getLong("id");
                return DB.getInstance(context).answer().getAnswer(id);
            }

            @Override
            protected void onExecuted(Bundle args, EntityAnswer answer) {
                etName.setText(answer == null ? null : answer.name);
                cbHide.setChecked(answer == null ? false : answer.hide);
                etText.setText(answer == null ? null : HtmlHelper.fromHtml(answer.text));
                bottom_navigation.findViewById(R.id.action_delete).setVisibility(answer == null ? View.GONE : View.VISIBLE);

                pbWait.setVisibility(View.GONE);
                grpReady.setVisibility(View.VISIBLE);
            }

            @Override
            protected void onException(Bundle args, Throwable ex) {
                Helper.unexpectedError(getContext(), getViewLifecycleOwner(), ex);
            }
        }.execute(this, args, "answer:get");
    }

    private void onActionDelete() {
        new DialogBuilderLifecycle(getContext(), getViewLifecycleOwner())
                .setMessage(R.string.title_ask_delete_answer)
                .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Bundle args = new Bundle();
                        args.putLong("id", id);

                        new SimpleTask<Void>() {
                            @Override
                            protected void onPreExecute(Bundle args) {
                                Helper.setViewsEnabled(view, false);
                            }

                            @Override
                            protected void onPostExecute(Bundle args) {
                                Helper.setViewsEnabled(view, true);
                            }

                            @Override
                            protected Void onExecute(Context context, Bundle args) {
                                long id = args.getLong("id");
                                DB.getInstance(context).answer().deleteAnswer(id);
                                return null;
                            }

                            @Override
                            protected void onExecuted(Bundle args, Void data) {
                                finish();
                            }

                            @Override
                            protected void onException(Bundle args, Throwable ex) {
                                Helper.unexpectedError(getContext(), getViewLifecycleOwner(), ex);
                            }
                        }.execute(FragmentAnswer.this, args, "answer:delete");
                    }
                })
                .setNegativeButton(android.R.string.cancel, null)
                .show();
    }

    private void onActionSave() {
        Bundle args = new Bundle();
        args.putLong("id", id);
        args.putString("name", etName.getText().toString());
        args.putBoolean("hide", cbHide.isChecked());
        args.putString("text", HtmlHelper.toHtml(etText.getText()));

        new SimpleTask<Void>() {
            @Override
            protected void onPreExecute(Bundle args) {
                Helper.setViewsEnabled(view, false);
            }

            @Override
            protected void onPostExecute(Bundle args) {
                Helper.setViewsEnabled(view, true);
            }

            @Override
            protected Void onExecute(Context context, Bundle args) {
                long id = args.getLong("id");
                String name = args.getString("name");
                boolean hide = args.getBoolean("hide");
                String text = args.getString("text");

                DB db = DB.getInstance(context);
                if (id < 0) {
                    EntityAnswer answer = new EntityAnswer();
                    answer.name = name;
                    answer.hide = hide;
                    answer.text = text;
                    answer.id = db.answer().insertAnswer(answer);
                } else {
                    EntityAnswer answer = db.answer().getAnswer(id);
                    answer.name = name;
                    answer.hide = hide;
                    answer.text = text;
                    db.answer().updateAnswer(answer);
                }

                return null;
            }

            @Override
            protected void onExecuted(Bundle args, Void data) {
                finish();
            }

            @Override
            protected void onException(Bundle args, Throwable ex) {
                Helper.unexpectedError(getContext(), getViewLifecycleOwner(), ex);
            }
        }.execute(this, args, "answer:save");
    }
}