/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.activemq.openwire.generator;

import java.io.File;
import java.io.PrintWriter;
import java.util.List;

import org.codehaus.jam.JAnnotation;
import org.codehaus.jam.JClass;
import org.codehaus.jam.JPackage;
import org.codehaus.jam.JProperty;

/**
 * Generates the test classes for the OpenWire marshalers.
 */
public class TestsGenerator extends MultiSourceGenerator {

    public TestsGenerator() {
        this.targetDir = "src/test/java";
    }

    @Override
    public Object run() {
        if (destDir == null) {
            destDir = new File(targetDir + "/io/openwire/codec/v" + getOpenwireVersion());
        }
        return super.run();
    }

    @Override
    protected String getClassName(JClass jclass) {
        if (isAbstract(jclass)) {
            return super.getClassName(jclass) + "TestSupport";
        } else {
            return super.getClassName(jclass) + "Test";
        }
    }

    @Override
    protected String getBaseClassName(JClass jclass) {
        String answer = "DataFileGeneratorTestSupport";
        if (superclass != null) {
            String name = superclass.getSimpleName();
            if (name != null && !name.equals("JNDIBaseStorable") && !name.equals("DataStructureSupport") && !name.equals("Object")) {
                answer = name + "Test";
                if (isAbstract(getJclass().getSuperclass())) {
                    answer += "Support";
                }
            }
        }
        return answer;
    }

    private void generateLicence(PrintWriter out) {
        out.println("/**");
        out.println(" *");
        out.println(" * Licensed to the Apache Software Foundation (ASF) under one or more");
        out.println(" * contributor license agreements.  See the NOTICE file distributed with");
        out.println(" * this work for additional information regarding copyright ownership.");
        out.println(" * The ASF licenses this file to You under the Apache License, Version 2.0");
        out.println(" * (the \"License\"); you may not use this file except in compliance with");
        out.println(" * the License.  You may obtain a copy of the License at");
        out.println(" *");
        out.println(" * http://www.apache.org/licenses/LICENSE-2.0");
        out.println(" *");
        out.println(" * Unless required by applicable law or agreed to in writing, software");
        out.println(" * distributed under the License is distributed on an \"AS IS\" BASIS,");
        out.println(" * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.");
        out.println(" * See the License for the specific language governing permissions and");
        out.println(" * limitations under the License.");
        out.println(" */");
    }

    @Override
    protected void generateFile(PrintWriter out) {

        generateLicence(out);

        out.println("package " + getCodecPackageRoot() + ".v" + openwireVersion + ";");
        out.println("");
        out.println("import java.io.DataInputStream;");
        out.println("import java.io.DataOutputStream;");
        out.println("import java.io.IOException;");
        out.println("");
        out.println("import " + getCodecPackageRoot() + ".*;");
        out.println("import " + getCommandsPackage() + ".*;");
        out.println("");

        for (JPackage pkg : getJclass().getImportedPackages()) {
            for (JClass clazz : pkg.getClasses()) {
                out.println("import " + clazz.getQualifiedName() + ";");
            }
        }

        out.println("");
        out.println("/**");
        out.println(" * Test case for the OpenWire marshalling for " + jclass.getSimpleName() + "");
        out.println(" *");
        out.println(" * NOTE!: This file is auto generated - do not modify!");
        out.println(" * ");
        out.println(" */");
        out.println("public " + getAbstractClassText() + "class " + className + " extends " + baseClass + " {");
        out.println("");
        if (!isAbstractClass()) {
            out.println("");
            out.println("    public static " + jclass.getSimpleName() + "Test SINGLETON = new " + jclass.getSimpleName() + "Test();");
            out.println("");
            out.println("    public Object createObject() throws Exception {");
            out.println("        " + jclass.getSimpleName() + " info = new " + jclass.getSimpleName() + "();");
            out.println("        populateObject(info);");
            out.println("        return info;");
            out.println("    }");
        }
        out.println("");
        out.println("    protected void populateObject(Object object) throws Exception {");
        out.println("        super.populateObject(object);");
        out.println("        " + getJclass().getSimpleName() + " info = (" + getJclass().getSimpleName() + ") object;");
        out.println("");

        TestDataGenerator generator = new TestDataGenerator();

        List<JProperty> properties = getProperties();
        for (JProperty property : properties) {
            JAnnotation annotation = property.getAnnotation("openwire:property");
            String size = stringValue(annotation, "size");
            String testSize = stringValue(annotation, "testSize");
            String type = property.getType().getSimpleName();
            String propertyName = property.getSimpleName();
            if ("-1".equals(testSize)) {
                continue;
            }

            String setterName = property.getSetter().getSimpleName();

            if (type.equals("boolean")) {
                out.println("        info." + setterName + "(" + generator.createBool() + ");");
            } else if (type.equals("byte")) {
                out.println("        info." + setterName + "(" + generator.createByte() + ");");
            } else if (type.equals("char")) {
                out.println("        info." + setterName + "(" + generator.createChar() + ");");
            } else if (type.equals("short")) {
                out.println("        info." + setterName + "(" + generator.createShort() + ");");
            } else if (type.equals("int")) {
                out.println("        info." + setterName + "(" + generator.createInt() + ");");
            } else if (type.equals("long")) {
                out.println("        info." + setterName + "(" + generator.createLong() + ");");
            } else if (type.equals("byte[]")) {
                out.println("        info." + setterName + "(" + generator.createByteArray(propertyName) + ");");
            } else if (type.equals("String")) {
                out.println("        info." + setterName + "(\"" + generator.createString(propertyName) + "\");");
            } else if (type.equals("ByteSequence")) {
                out.println("        {");
                out.println("            byte data[] = " + generator.createByteArray(propertyName) + ";");
                out.println("            info." + setterName + "(new org.apache.activemq.util.ByteSequence(data,0,data.length));");
                out.println("}");
            } else if (type.equals("Throwable")) {
                out.println("        info." + setterName + "(createThrowable(\"" + generator.createString(propertyName) + "\"));");
            } else {
                if (property.getType().isArrayType()) {
                    String arrayType = property.getType().getArrayComponentType().getSimpleName();
                    if (size == null) {
                        size = "2";
                    }
                    if (arrayType == jclass.getSimpleName()) {
                        size = "0";
                    }
                    out.println("        {");
                    out.println("            " + arrayType + " value[] = new " + arrayType + "[" + size + "];");
                    out.println("            for( int i=0; i < " + size + "; i++ ) {");
                    out.println("                value[i] = create" + arrayType + "(\"" + generator.createString(propertyName) + "\");");
                    out.println("            }");
                    out.println("            info." + setterName + "(value);");
                    out.println("        }");
                } else {
                    out.println("        info." + setterName + "(create" + type + "(\"" + generator.createString(propertyName) + "\"));");
                }
            }
        }

        out.println("    }");
        out.println("}");
    }
}