SamsungAcGenericBindingProvider.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.binding.samsungac.internal;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.openhab.binding.samsungac.SamsungAcBindingProvider;
import org.openhab.core.binding.BindingConfig;
import org.openhab.core.items.Item;
import org.openhab.core.library.items.NumberItem;
import org.openhab.core.library.items.StringItem;
import org.openhab.core.library.items.SwitchItem;
import org.openhab.model.item.binding.AbstractGenericBindingProvider;
import org.openhab.model.item.binding.BindingConfigParseException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This class is responsible for parsing the binding configuration. A valid
 * items binding configuration file will look like the following:
 * Replace <AC_NAME> with the name of the configured air conditioner, e.g. Livingroom
 *
 * <pre>
 * Number ac_current_temp "Current temp [%.1f]" {samsungac="[<AC_NAME>|AC_FUN_TEMPNOW]"}
 * Switch ac_power 								{samsungac="[<AC_NAME>|AC_FUN_POWER]"}
 * Number ac_mode "Convenience mode"			{samsungac="[<AC_NAME>|AC_FUN_COMODE]"}
 * Number ac_op_mode "Operation mode"			{samsungac="[<AC_NAME>|AC_FUN_OPMODE]"}
 * Number ac_set_temp "Set temp [%.1f]"			{samsungac="[<AC_NAME>|AC_FUN_TEMPSET]"}
 * Number ac_direction "Direction"				{samsungac="[<AC_NAME>|AC_FUN_DIRECTION]"}
 * Number ac_windlevel "Windlevel"				{samsungac="[<AC_NAME>|AC_FUN_WINDLEVEL]"}
 * String ac_error "Error"						{samsungac="[<AC_NAME>|AC_FUN_ERROR]"}
 * </pre>
 *
 * @author Stein Tore Tøsse
 * @since 1.6.0
 */
public class SamsungAcGenericBindingProvider extends AbstractGenericBindingProvider
        implements SamsungAcBindingProvider {

    static final Logger logger = LoggerFactory.getLogger(SamsungAcGenericBindingProvider.class);

    private static final Pattern CONFIG_PATTERN = Pattern.compile("\\[(.*)\\|(.*)\\]");

    /**
     * {@inheritDoc}
     */
    public String getBindingType() {
        return "samsungac";
    }

    /**
     * @{inheritDoc
     */
    public void validateItemType(Item item, String bindingConfig) throws BindingConfigParseException {
        if (!(item instanceof SwitchItem) && !(item instanceof NumberItem) && !(item instanceof StringItem)) {
            throw new BindingConfigParseException("item '" + item.getName() + "' is of type '"
                    + item.getClass().getSimpleName() + "', but only Number, Strings and Switchs items are allowed.");
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void processBindingConfiguration(String context, Item item, String bindingConfig)
            throws BindingConfigParseException {

        super.processBindingConfiguration(context, item, bindingConfig);
        SamsungAcBindingConfig config = parseBindingConfig(item, bindingConfig);
        addBindingConfig(item, config);
    }

    private SamsungAcBindingConfig parseBindingConfig(Item item, String bindingConfig)
            throws BindingConfigParseException {
        Matcher matcher = CONFIG_PATTERN.matcher(bindingConfig);

        if (!matcher.matches()) {
            throw new BindingConfigParseException("Config for item '" + item.getName() + "' could not be parsed.");
        }

        String acInstance = matcher.group(1);
        CommandEnum property = CommandEnum.valueOf(matcher.group(2));

        return new SamsungAcBindingConfig(acInstance, item.getName(), property);
    }

    public BindingConfig getItem(String acName, CommandEnum property) {
        for (BindingConfig config : bindingConfigs.values()) {
            SamsungAcBindingConfig con = (SamsungAcBindingConfig) config;
            if (property.equals(con.getProperty()) && con.acInstance.equals(acName)) {
                return con;
            }
        }
        return null;
    }

    public String getItemName(String acName, CommandEnum property) {
        SamsungAcBindingConfig con = (SamsungAcBindingConfig) getItem(acName, property);
        if (con != null && property.equals(con.getProperty())) {
            return con.getItemName();
        }
        return null;
    }

    class SamsungAcBindingConfig implements BindingConfig {
        private String acInstance;
        private String itemName;
        private CommandEnum property;

        public SamsungAcBindingConfig(String acInstance, CommandEnum property) {
            this.acInstance = acInstance;
            this.property = property;
        }

        public SamsungAcBindingConfig(String acInstance, String itemName, CommandEnum property) {
            this.acInstance = acInstance;
            this.property = property;
            this.itemName = itemName;
        }

        public String getSamsungAcInstance() {
            return acInstance;
        }

        public CommandEnum getProperty() {
            return property;
        }

        public String getItemName() {
            return itemName;
        }

        @Override
        public String toString() {
            return " acInstance:" + acInstance + " itemName:" + itemName + " property:" + property;
        }
    }

    public String getAirConditionerInstance(String itemname) {
        SamsungAcBindingConfig bindingConfig = (SamsungAcBindingConfig) bindingConfigs.get(itemname);
        return bindingConfig.getSamsungAcInstance();
    }

    public CommandEnum getProperty(String itemname) {
        SamsungAcBindingConfig bindingConfig = (SamsungAcBindingConfig) bindingConfigs.get(itemname);
        return bindingConfig.getProperty();
    }
}