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/*
 * Copyright 2012 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.gradle.plugins.javascript.jshint.internal;

import org.gradle.api.logging.Logger;
import org.gradle.api.logging.Logging;
import org.gradle.plugins.javascript.rhino.worker.RhinoWorkerUtils;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.Scriptable;

import java.io.File;
import java.util.LinkedHashMap;
import java.util.Map;

import static org.gradle.plugins.javascript.rhino.worker.RhinoWorkerUtils.*;

public class JsHintWorker implements JsHintProtocol {

    private static final Logger LOGGER = Logging.getLogger(JsHintWorker.class);

    @Override
    public JsHintResult process(JsHintSpec spec) {
        Scriptable jsHintScope = RhinoWorkerUtils.parse(spec.getJsHint(), "UTF-8");

        String encoding = spec.getEncoding();

        Map> results = new LinkedHashMap>();

        for (File target : spec.getSource()) {
            LOGGER.info("Reading file: {}", target.getAbsolutePath());
            String source = readFile(target, encoding);
            Map result = jsHint(jsHintScope, source, target.getName());
            results.put(target, result);
        }

        return new JsHintResult(results);
    }

    private Map jsHint(Scriptable jsHintScope, final String source, final String sourceName) {
        return childScope(jsHintScope, new DefaultScopeOperation>() {
            public Map action(Scriptable scope, Context context) {
                scope.put("jsHintSource", scope, source);
                Object data = context.evaluateString(scope, "JSHINT(jsHintSource); JSHINT.data();", sourceName, 0, null);
                return toMap((Scriptable) data);
            }
        });
    }

}