/**
* 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.ihc.internal;
import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.openhab.binding.ihc.IhcBindingProvider;
import org.openhab.core.autoupdate.AutoUpdateBindingProvider;
import org.openhab.core.binding.BindingConfig;
import org.openhab.core.items.Item;
import org.openhab.core.library.items.ContactItem;
import org.openhab.core.library.items.DateTimeItem;
import org.openhab.core.library.items.DimmerItem;
import org.openhab.core.library.items.NumberItem;
import org.openhab.core.library.items.RollershutterItem;
import org.openhab.core.library.items.StringItem;
import org.openhab.core.library.items.SwitchItem;
import org.openhab.core.types.Command;
import org.openhab.core.types.TypeParser;
import org.openhab.model.item.binding.AbstractGenericBindingProvider;
import org.openhab.model.item.binding.BindingConfigParseException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* <p>
* This class can parse information from the generic binding format and provides
* Ihc binding information from it. It registers as a {@link IhcBindingProvider}
* service as well.
* </p>
*
* <p>
* The syntax of the binding configuration strings accepted is the following:
* <p>
* <p>
* <code>
* ihc="<[>]ResourceId>[:<refreshintervalinseconds>]"
* </code>
* </p>
* where parts in brackets [] signify an optional information.
*
* The optional '>' sign tells whether resource is only out binding, where
* internal update from OpenHAB bus is transmitted to the controller.
*
* Binding will automatically enable runtime value notifications from controller
* for all configured resources.
*
* Refresh interval could be used for forcefully synchronous resource values
* from controller.
*
* Currently Number, Switch, Contact, String and DateTime items are supported.
*
* <p>
* Here are some examples for valid binding configuration strings:
* <ul>
* <li><code>ihc="12345678"</code></li>
* <li><code>ihc="87654321:20"</code></li>
* <li><code>ihc="11111111:0"</code></li>
* <li><code>ihc=">22222222"</code></li>
* </ul>
*
* @author Pauli Anttila
* @author Simon Merschjohann
* @since 1.1.0
*/
public class IhcGenericBindingProvider extends AbstractGenericBindingProvider
implements IhcBindingProvider, AutoUpdateBindingProvider {
private static final Logger logger = LoggerFactory.getLogger(IhcGenericBindingProvider.class);
private final static Pattern commandPattern = Pattern
.compile("\\[([\\w*]+):(0x[0-9a-fA-F]+|\\d+)(?::(\\d+)){0,1}\\]");
/**
* {@inheritDoc}
*/
@Override
public String getBindingType() {
return "ihc";
}
/**
* {@inheritDoc}
*/
@Override
public void processBindingConfiguration(String context, Item item, String bindingConfig)
throws BindingConfigParseException {
super.processBindingConfiguration(context, item, bindingConfig);
IhcBindingConfig config = new IhcBindingConfig();
config.itemType = item.getClass();
config.outCommandMap = new HashMap<Command, IhcOutCommandConfig>();
String[] splittedCommands = bindingConfig.split(",");
for (String split : splittedCommands) {
if (split.startsWith(">")) {
try {
// out binding
String resourceCommand = split.substring(1);
Matcher m = commandPattern.matcher(resourceCommand);
IhcOutCommandConfig outConfig = new IhcOutCommandConfig();
if (!m.matches()) {
if (splittedCommands.length < 2) {
// assume old style out command
outConfig.command = null; // wildcard
outConfig.resourceId = getResourceIdFromString(resourceCommand);
} else {
throw new BindingConfigParseException(
"Item '" + item.getName() + "' has invalid out binding config");
}
} else {
// new style out binding
Command command = TypeParser.parseCommand(item.getAcceptedCommandTypes(), m.group(1));
if (command == null && !m.group(1).equals("*")) {
throw new BindingConfigParseException(
"Item '" + item.getName() + " invalid Command: " + m.group(1));
}
outConfig.command = command;
outConfig.resourceId = getResourceIdFromString(m.group(2));
if (m.groupCount() == 3 && m.group(3) != null) {
outConfig.value = Integer.parseInt(m.group(3));
if (outConfig.value > 2000) {
throw new BindingConfigParseException("Item '" + item.getName()
+ "' exceeds maximum value of 2000 ms for trigger command");
}
}
}
config.outCommandMap.put(outConfig.command, outConfig);
} catch (Exception e) {
logger.warn("Error in output config for item: " + item.getName(), e);
}
} else if (split.startsWith("<")) {
if (config.resourceId < 1) {
config.resourceId = getResourceIdFromString(split.substring(1));
} else {
throw new BindingConfigParseException("Multiple In-Bindings found, only one In-Binding allowed.");
}
} else {
if (splittedCommands.length < 2) {
String[] configParts = bindingConfig.trim().split(":");
if (configParts.length > 2) {
throw new BindingConfigParseException(
"IHC / ELKO LS binding must contain of max two two parts separated by ':'");
}
String resourceId = configParts[0];
config.resourceId = getResourceIdFromString(resourceId);
IhcOutCommandConfig outConfig = new IhcOutCommandConfig();
outConfig.command = null; // wildcard
outConfig.resourceId = config.resourceId;
config.outCommandMap.put(null, outConfig);
if (configParts.length == 2) {
config.refreshInterval = Integer.parseInt(configParts[1]);
}
} else {
throw new BindingConfigParseException(
"Only a sum of out bindings (+In-Only Binding) or a normal binding is supported.");
}
}
}
addBindingConfig(item, config);
}
private int getResourceIdFromString(String resourceId) {
int ret = 0;
if (resourceId.startsWith("0x")) {
ret = Integer.parseInt(resourceId.replace("0x", ""), 16);
} else {
ret = Integer.parseInt(resourceId);
}
return ret;
}
/**
* This is an internal data structure to store information from the binding
* config strings and use it to answer the requests to the IHC binding
* provider.
*
*/
static private class IhcBindingConfig implements BindingConfig {
Class<? extends Item> itemType;
public int resourceId;
public int refreshInterval;
public HashMap<Command, IhcOutCommandConfig> outCommandMap;
}
static private class IhcOutCommandConfig {
public Command command;
public Integer resourceId;
public Integer value; // used if it is a function
}
/**
* @{inheritDoc
*/
@Override
public Class<? extends Item> getItemType(String itemName) {
IhcBindingConfig config = (IhcBindingConfig) bindingConfigs.get(itemName);
return config != null ? config.itemType : null;
}
@Override
public int getResourceIdForInBinding(String itemName) {
int result = 0;
IhcBindingConfig config = (IhcBindingConfig) bindingConfigs.get(itemName);
if (config != null) {
result = config.resourceId;
}
return result;
}
@Override
public int getResourceId(String itemName, Command cmd) {
int result = 0;
IhcBindingConfig config = (IhcBindingConfig) bindingConfigs.get(itemName);
if (config != null) {
IhcOutCommandConfig outConfig = config.outCommandMap.get(cmd);
if (outConfig != null) {
// command matching resource found
result = outConfig.resourceId;
} else {
// check if wildcard resource exists
outConfig = config.outCommandMap.get(null);
if (outConfig != null) {
result = outConfig.resourceId;
}
}
}
return result;
}
@Override
public int getRefreshInterval(String itemName) {
IhcBindingConfig config = (IhcBindingConfig) bindingConfigs.get(itemName);
return config != null ? config.refreshInterval : null;
}
@Override
public boolean isOutBinding(String itemName, int resourceId) {
IhcBindingConfig config = (IhcBindingConfig) bindingConfigs.get(itemName);
boolean isOutBinding = true;
if (config.resourceId == resourceId) {
isOutBinding = false;
}
return isOutBinding;
}
@Override
public boolean hasInBinding(String itemName) {
IhcBindingConfig config = (IhcBindingConfig) bindingConfigs.get(itemName);
return config != null ? config.resourceId > 0 : null;
}
@Override
public void validateItemType(Item item, String bindingConfig) throws BindingConfigParseException {
if (!(item instanceof NumberItem || item instanceof SwitchItem || item instanceof ContactItem
|| item instanceof StringItem || item instanceof DateTimeItem || item instanceof DimmerItem
|| item instanceof RollershutterItem)) {
throw new BindingConfigParseException("Item '" + item.getName() + "' is of type '"
+ item.getClass().getSimpleName()
+ "', only NumberItems, SwitchItems, ContactItems, DateTimeItem, StringItem, DimmerItem or RollershutterItem are allowed - please check your *.items configuration");
}
}
@Override
public Boolean autoUpdate(String itemName) {
return null;
}
@Override
public Integer getValue(String itemName, Command cmd) {
IhcBindingConfig config = (IhcBindingConfig) bindingConfigs.get(itemName);
IhcOutCommandConfig outConfig = (config != null && config.outCommandMap != null) ? config.outCommandMap.get(cmd)
: null;
if (outConfig == null) {
outConfig = (config != null && config.outCommandMap != null) ? config.outCommandMap.get(null) : null;
}
return (outConfig != null) ? outConfig.value : null;
}
}