/*
 * Copyright 2009-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.codehaus.groovy.eclipse.codeassist;

import java.util.HashSet;
import java.util.Set;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

public class GroovyContentAssist extends AbstractUIPlugin {

    public static final String PLUGIN_ID = "org.codehaus.groovy.eclipse.codeassist.completion";

    // comma-separated list of method names to hide
    public static final String FILTERED_DGMS = PLUGIN_ID + ".filtereddgms";
    // if true use named arguments for method calls
    public static final String NAMED_ARGUMENTS = PLUGIN_ID + ".arguments.named";
    // if true use parameter guessing proposals
    public static final String PARAMETER_GUESSING = PLUGIN_ID + ".arguments.guess";
    // if true use brackets for closure args
    public static final String CLOSURE_BRACKETS = PLUGIN_ID + ".closures.literals";
    // if true do not use parens around methods
    public static final String CLOSURE_NOPARENS = PLUGIN_ID + ".closures.noparens";

    private static GroovyContentAssist plugin;

    public GroovyContentAssist() {
        plugin = this;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.core.runtime.Plugins#start(org.osgi.framework.BundleContext)
     */
    @Override
    public void start(BundleContext context) throws Exception {
        super.start(context);
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.core.runtime.Plugin#stop(org.osgi.framework.BundleContext)
     */
    @Override
    public void stop(BundleContext context) throws Exception {
        plugin = null;
        super.stop(context);
    }

    public static GroovyContentAssist getDefault() {
        return plugin;
    }

    public static void logError(Throwable e) {
        getDefault().getLog().log(new Status(IStatus.ERROR, PLUGIN_ID, IStatus.OK, e.getLocalizedMessage(), e));
    }

    public static void logError(String message, Throwable e) {
        getDefault().getLog().log(new Status(IStatus.ERROR, PLUGIN_ID, IStatus.OK, message, e));
    }

    public Set<String> getFilteredDGMs() {
        String filtered = getPreferenceStore().getString(FILTERED_DGMS);
        String[] filteredArr = filtered.split(",");
        Set<String> filteredSet = new HashSet<String>(filteredArr.length);
        for (String s : filteredArr) {
            s = s.trim();
            if (s.length() > 0) {
                filteredSet.add(s);
            }
        }
        return filteredSet;
    }

    public void setFilteredDGMs(Set<String> filteredSet) {
        StringBuilder sb = new StringBuilder();
        for (String s : filteredSet) {
            if (s == null) continue;
            s = s.trim();
            if (s.length() > 0) {
                sb.append(s + ",");
            }
        }
        getPreferenceStore().setValue(FILTERED_DGMS, sb.toString());
    }
}