/*
 * Copyright (c) 2006-2015 DMDirc Developers
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.dmdirc.addons.ui_swing.dialogs.prefs;

import com.dmdirc.ClientModule.GlobalConfig;
import com.dmdirc.ClientModule.UserConfig;
import com.dmdirc.DMDircMBassador;
import com.dmdirc.addons.ui_swing.components.PackingTable;
import com.dmdirc.config.prefs.PreferencesInterface;
import com.dmdirc.events.UserErrorEvent;
import com.dmdirc.interfaces.config.AggregateConfigProvider;
import com.dmdirc.interfaces.config.ConfigChangeListener;
import com.dmdirc.interfaces.config.ConfigProvider;
import com.dmdirc.interfaces.config.IdentityController;
import com.dmdirc.logger.ErrorLevel;
import com.dmdirc.updater.UpdateChannel;
import com.dmdirc.updater.UpdateChecker;
import com.dmdirc.updater.manager.CachingUpdateManager;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.inject.Inject;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

import net.miginfocom.swing.MigLayout;

/**
 * Updates configuration UI.
 */
public class UpdateConfigPanel extends JPanel implements ActionListener,
        PreferencesInterface, ConfigChangeListener {

    /** A version number for this class. */
    private static final long serialVersionUID = 1;
    /** Global checkbox. */
    private JCheckBox enable;
    /** Table scroll pane, */
    private JScrollPane scrollPane;
    /** Component table model. */
    private UpdateTableModel tableModel;
    /** Check now button. */
    private JButton checkNow;
    /** Update channel. */
    private JComboBox<UpdateChannel> updateChannel;
    /** The configuration to write settings changes to. */
    private final ConfigProvider userConfig;
    /** The configuration to read global settings from. */
    private final AggregateConfigProvider globalConfig;
    /** The manager to read update information from. */
    private final CachingUpdateManager updateManager;
    /** Controller to pass to the update checker. */
    private final IdentityController identityController;
    /** The event bus to post errors to. */
    private final DMDircMBassador eventBus;

    /**
     * Instantiates a new update config panel.
     *
     * @param userConfig         The configuration to write settings changes to.
     * @param globalConfig       The configuration to read global settings from.
     * @param updateManager      The manager to read update information from.
     * @param identityController Controller to pass to the update checker.
     * @param eventBus           The event bus to post the errors to
     */
    @Inject
    public UpdateConfigPanel(
            @UserConfig final ConfigProvider userConfig,
            @GlobalConfig final AggregateConfigProvider globalConfig,
            final CachingUpdateManager updateManager,
            final IdentityController identityController,
            final DMDircMBassador eventBus) {
        this.userConfig = userConfig;
        this.globalConfig = globalConfig;
        this.updateManager = updateManager;
        this.identityController = identityController;
        this.eventBus = eventBus;

        initComponents();
        addListeners();
        layoutComponents();
    }

    @Override
    public void save() {
        userConfig.setOption("updater", "enable", enable.isSelected());
        userConfig.setOption("updater", "channel", updateChannel
                .getSelectedItem().toString());

        for (int i = 0; i < tableModel.getRowCount(); i++) {
            final String componentName = tableModel.getComponent(i).getName();
            if ((Boolean) tableModel.getValueAt(i, 1)) {
                userConfig.unsetOption("updater", "enable-" + componentName);
            } else {
                userConfig.setOption("updater", "enable-" + componentName, false);
            }
        }
    }

    /**
     * Initialises the components.
     */
    private void initComponents() {
        enable = new JCheckBox();
        scrollPane = new JScrollPane();
        tableModel = new UpdateTableModel(updateManager, updateManager.getComponents());
        final PackingTable table = new PackingTable(tableModel, scrollPane);
        checkNow = new JButton("Check now");
        checkNow.setEnabled(globalConfig.getOptionBool("updater", "enable"));
        updateChannel = new JComboBox<>(new DefaultComboBoxModel<>(UpdateChannel.values()));

        enable.setSelected(globalConfig.getOptionBool("updater", "enable"));
        UpdateChannel channel = UpdateChannel.NONE;
        try {
            channel = UpdateChannel.valueOf(globalConfig.getOption("updater", "channel"));
        } catch (IllegalArgumentException e) {
            eventBus.publishAsync(new UserErrorEvent(ErrorLevel.LOW, e,
                    "Invalid setting for update channel, defaulting to none.", ""));
        }
        updateChannel.setSelectedItem(channel);
        scrollPane.setViewportView(table);
    }

    /**
     * Adds the listeners.
     */
    private void addListeners() {
        checkNow.addActionListener(this);
        globalConfig.addChangeListener("updater", "enable", this);
        enable.addActionListener(this);
    }

    /**
     * Lays out the components.
     */
    private void layoutComponents() {
        setLayout(new MigLayout("fill, ins 0, hmax 500"));

        add(new JLabel("Update checking:"), "split");
        add(enable, "growx");
        add(updateChannel, "growx, pushx, wrap");
        add(scrollPane, "wrap, grow, push");
        add(checkNow, "right");
    }

    @Override
    public void actionPerformed(final ActionEvent e) {
        if (enable == e.getSource()) {
            checkNow.setEnabled(enable.isSelected());
        } else {
            UpdateChecker.checkNow(updateManager, identityController, eventBus);
        }
    }

    @Override
    public void configChanged(final String domain, final String key) {
        checkNow.setEnabled(globalConfig.getOptionBool("updater", "enable"));
    }

}
