/*
 * slcl-android, an Android frontend for slcl
 * Copyright (C) 2023-2024  Xavier Del Campo Romero
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package org.slcl;

import org.slcl.core.Cookie;
import org.slcl.core.Login;
import org.slcl.Directory;
import org.slcl.InternalFile;
import java.net.URLEncoder;
import java.io.IOException;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.Editable;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;

public final class LoginActivity extends Activity {

    private class LoginParams {
        public LoginParams(final boolean https, String url,
            final String username, final String password)
        {
            this.https = https;
            this.username = username;
            this.url = url;
            this.password = password;
        }

        final boolean https;
        final String url, username, password;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        Button button = (Button)findViewById(R.id.button);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final EditText url = (EditText)findViewById(R.id.url);
                final EditText username = (EditText)findViewById(R.id.username);
                final EditText password = (EditText)findViewById(R.id.password);
                final CheckBox https = (CheckBox)findViewById(R.id.https);

                url.setText("192.168.1.180:50683");
                username.setText("a");
                password.setText("a");
                https.setChecked(false);

                try {
                    final String urlstr = url.getText().toString();
                    final String encusername = URLEncoder.encode(
                        username.getText().toString(), "UTF-8");
                    final String encpassword = URLEncoder.encode(
                        password.getText().toString(), "UTF-8");

                    final LoginTask t = new LoginTask();
                    LoginParams p = new LoginParams(https.isChecked(),
                        urlstr, encusername, encpassword);

                    t.execute(p);
                }
                catch (final IOException e) {
                    //error.setText("Exception: " + e.getMessage());
                }
            }
        });
    }

    // https://stackoverflow.com/questions/6053602/what-arguments-are-passed-into-asynctaskarg1-arg2-arg3
    private final class LoginTask
        extends AsyncTask<LoginParams, String, String>
    {
        ProgressDialog dialog;

        @Override
        protected void onPreExecute()
        {
            dialog = dialog.show(LoginActivity.this, "ProgressDialog",
                "Logging into server");
        }

        @Override
        protected String doInBackground(final LoginParams... params)
        {
            try {
                final LoginParams p = params[0];
                final Login l = new Login();
                final String cookie = l.login(p.https, p.url, p.username,
                    p.password);
                final InternalFile f = new InternalFile(
                        getApplicationContext(), "login");
                final Cookie c = new Cookie(p.username, cookie);

                c.store(f.getFile());
                return "";
            } catch (final IOException e) {
                System.out.println(e.getMessage());
                return e.getMessage();
            }
        }

        @Override
        protected void onProgressUpdate(final String... text)
        {
        }

        @Override
        protected void onPostExecute(final String result)
        {
            Intent intent = new Intent(LoginActivity.this, Directory.class);

            dialog.dismiss();
            startActivity(intent);
            // TODO: review errors.
            //error.setText("Exception: " + e.getMessage());
        }
    }
}