/*-
 * ============LICENSE_START=======================================================
 * openECOMP : SDN-C
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights
 * 						reserved.
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */

package org.openecomp.sdnc.sli.provider;

import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

import org.openecomp.sdnc.sli.SvcLogicContext;
import org.openecomp.sdnc.sli.SvcLogicGraph;
import org.openecomp.sdnc.sli.SvcLogicJavaPlugin;
import org.openecomp.sdnc.sli.SvcLogicNode;

import junit.framework.TestCase;

public class PluginTest extends TestCase {

    // The existing plugins work just like a VoidDummyPlugin
    // They will return null simply because they are all void
    // The attribute emitsOutcome will not be present, the expected outcome is success when no exception is thrown by the plugin
    public void testOldPlugin() throws Exception {
        ExecuteNodeExecutor executor = new ExecuteNodeExecutor();
        SvcLogicJavaPlugin plugin = new VoidDummyPlugin();

        Class pluginClass = plugin.getClass();
        Method pluginMethod = pluginClass.getMethod("dummy", Map.class, SvcLogicContext.class);
        Map<String, String> parmMap = new HashMap<String, String>();
        SvcLogicContext ctx = new SvcLogicContext();
        Object o = pluginMethod.invoke(plugin, parmMap, ctx);

        SvcLogicGraph graph = new SvcLogicGraph();
        SvcLogicNode node = new SvcLogicNode(1, "return", graph);
        String emitsOutcome = SvcLogicExpressionResolver.evaluate(node.getAttribute("emitsOutcome"),  node, ctx);
        String outValue = executor.mapOutcome(o, emitsOutcome);
        assertEquals("success",outValue);
    }

    //Newer plugins can set the attribute emitsOutcome to true, if so they should return a string
    //The string represents the outcome value
    public void testNewPlugin() throws Exception {
        ExecuteNodeExecutor executor = new ExecuteNodeExecutor();
        SvcLogicJavaPlugin plugin = new LunchSelectorPlugin();

        Class pluginClass = plugin.getClass();
        Method pluginMethod = pluginClass.getMethod("selectLunch", Map.class, SvcLogicContext.class);

        Map<String, String> parmMap = new HashMap<String, String>();
        SvcLogicContext ctx = new SvcLogicContext();

        parmMap.put("day", "monday");
        Object o = pluginMethod.invoke(plugin, parmMap, ctx);
        SvcLogicGraph graph = new SvcLogicGraph();
        SvcLogicNode node = new SvcLogicNode(1, "return", graph);
        node.setAttribute("emitsOutcome", "true");
        String emitsOutcome = SvcLogicExpressionResolver.evaluate(node.getAttribute("emitsOutcome"),  node, ctx);
        String outValue = executor.mapOutcome(o, emitsOutcome);
        assertEquals("pizza", outValue);

        parmMap.put("day", "tuesday");
        outValue = (String) pluginMethod.invoke(plugin, parmMap, ctx);
        o = pluginMethod.invoke(plugin, parmMap, ctx);
        outValue = executor.mapOutcome(o, emitsOutcome);
        assertEquals("soup",outValue);

    }

    //APPC had some legacy plugins returning objects which should not be treated as outcomes
    //The attribute emitsOutcome will not be set
    //The outcome should be success as it has always been
    public void testObjPlugin() throws Exception{
        ExecuteNodeExecutor executor = new ExecuteNodeExecutor();
        SvcLogicJavaPlugin plugin = new LunchSelectorPlugin();

        Class pluginClass = plugin.getClass();
        Method pluginMethod = pluginClass.getMethod("makeLunch", Map.class, SvcLogicContext.class);

        Map<String, String> parmMap = new HashMap<String, String>();
        SvcLogicContext ctx = new SvcLogicContext();
        Object o = pluginMethod.invoke(plugin, parmMap, ctx);
        SvcLogicGraph graph = new SvcLogicGraph();
        SvcLogicNode node = new SvcLogicNode(1, "return", graph);
        String emitsOutcome = SvcLogicExpressionResolver.evaluate(node.getAttribute("emitsOutcome"),  node, ctx);
        String outValue = executor.mapOutcome(o, emitsOutcome);
        assertEquals("success",outValue);
    }

}