/*
 *
 *  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 flex.ant;

import flex.ant.config.ConfigBoolean;
import flex.ant.config.ConfigInt;
import flex.ant.config.ConfigString;
import flex.ant.config.ConfigVariable;
import flex.ant.config.NestedAttributeElement;
import flex.ant.config.OptionSource;
import flex.ant.config.OptionSpec;
import flex.ant.config.RepeatableConfigString;
import flex.ant.types.DefaultScriptLimits;
import flex.ant.types.DefaultSize;
import flex.ant.types.FlexFileSet;
import flex.ant.types.FlexSwcFileSet;
import flex.ant.types.Fonts;
import flex.ant.types.Metadata;
import flex.ant.types.RuntimeSharedLibraryPath;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DynamicConfigurator;

import java.util.ArrayList;
import java.util.Iterator;
import java.io.File;

/**
 * Implements the &lt;compc&gt; Ant task.  For example:
 * <p>
 * <pre>
 *     &lt;compc fork="true" 
 *            output="${FLEX_HOME}/frameworks/libs/sparkskins.swc"
 *            resource-bundle-list="${basedir}/bundles.properties"&gt;
 *         &lt;target-player&gt;10&lt;/target-player&gt;
 *         &lt;jvmarg line="${compc.jvm.args}"/&gt;
 *         &lt;include-classes&gt;SparkSkinsClasses&lt;/include-classes&gt;
 *         &lt;source-path path-element="${basedir}/src"/&gt;
 *         &lt;library-path/&gt;
 *         &lt;external-library-path dir="${FLEX_HOME}/frameworks/libs"&gt;
 *             &lt;include name="player/${local.playerglobal.version}/playerglobal.swc"/&gt;
 *             &lt;include name="framework.swc"/&gt;
 *             &lt;include name="spark.swc" /&gt;
 *             &lt;include name="textLayout.swc"/&gt;
 *         &lt;/external-library-path&gt;
 *         &lt;locale/&gt;
 *         &lt;accessible&gt;true&lt;/accessible&gt;
 *     &lt;/compc&gt;
 * </pre>
 * <p>
 * All the simple compc configuration parameters are supported as tag
 * attributes.  Complex configuration options, like
 * -compiler.namespaces.namespace, are implemented as child tags.  For
 * example:
 * <p>
 * </code>
 *     &lt;namespace uri="http://www.adobe.com/2006/mxml" manifest="${basedir}/manifest.xml"/&gt;
 * </code>
 */
public final class CompcTask extends FlexTask implements DynamicConfigurator
{
    /*=======================================================================*
     *  Static variables and initializer                                     *
     *=======================================================================*/

    private static OptionSpec nsSpec = new OptionSpec("compiler", "namespaces.namespace", "namespace");
    private static OptionSpec liSpec = new OptionSpec("licenses", "license");
    private static OptionSpec exSpec = new OptionSpec("externs");
    private static OptionSpec inSpec = new OptionSpec("includes");
    private static OptionSpec rsSpec = new OptionSpec(null, "runtime-shared-libraries", "rsl");
    private static OptionSpec frSpec = new OptionSpec("frames", "frame");

    private static OptionSpec ccSpec = new OptionSpec("compiler", "define");
    private static OptionSpec elSpec = new OptionSpec("compiler", "external-library-path", "el");
    private static OptionSpec ilSpec = new OptionSpec("compiler", "include-libraries");
    private static OptionSpec lpSpec = new OptionSpec("compiler", "library-path", "l");
    private static OptionSpec spSpec = new OptionSpec("compiler", "source-path", "sp");
    private static OptionSpec thSpec = new OptionSpec("compiler", "theme");
    private static OptionSpec kmSpec = new OptionSpec("compiler", "keep-as3-metadata");
    private static OptionSpec lcSpec = new OptionSpec("load-config");

    private static OptionSpec icSpec = new OptionSpec(null, "include-classes", "ic");
    private static OptionSpec ifSpec = new OptionSpec(null, "include-file", "if");
    private static OptionSpec insSpec = new OptionSpec(null, "include-namespaces", "in");
    private static OptionSpec irSpec = new OptionSpec(null, "include-resource-bundles", "ir");
    private static OptionSpec isSpec = new OptionSpec(null, "include-sources", "is");

    /*=======================================================================*
     *
     *=======================================================================*/

    private final ArrayList<OptionSource> nestedFileSets;

    private final ConfigString outString; 
    private final RepeatableConfigString icStrings;

    private Metadata metadata;
    private Fonts fonts;
    private DefaultScriptLimits dLimits;
    private DefaultSize dSize;

    /**
     *
     */
    public CompcTask()
    {
        super("compc", "flex2.tools.Compc", "compc.jar", new ConfigVariable[] {
            //Basic Booleans
            new ConfigBoolean(new OptionSpec("benchmark")),
            new ConfigBoolean(new OptionSpec("compiler", "accessible")),
            new ConfigBoolean(new OptionSpec("compiler", "debug")),
            new ConfigBoolean(new OptionSpec("compiler", "incremental")), 
            new ConfigBoolean(new OptionSpec("compiler", "mobile")),
            new ConfigBoolean(new OptionSpec("compiler", "optimize")),
            new ConfigBoolean(new OptionSpec("compiler", "report-invalid-styles-as-warnings")),
            new ConfigBoolean(new OptionSpec("compiler", "report-missing-required-skin-parts-as-warnings")),
            new ConfigBoolean(new OptionSpec("compiler", "show-actionscript-warnings")),
            new ConfigBoolean(new OptionSpec("compiler", "show-binding-warnings")),
            new ConfigBoolean(new OptionSpec("compiler", "show-deprecation-warnings")),
            new ConfigBoolean(new OptionSpec("compiler", "show-invalid-css-property-warnings")),
            new ConfigBoolean(new OptionSpec("compiler", "strict")),
            new ConfigBoolean(new OptionSpec("compiler", "use-resource-bundle-metadata")),
            new ConfigBoolean(new OptionSpec("directory")),
            new ConfigBoolean(new OptionSpec("use-network")),
            new ConfigBoolean(new OptionSpec("warnings")),
            //Advanced Booleans
            new ConfigBoolean(new OptionSpec("compiler", "allow-source-path-overlap")),
            new ConfigBoolean(new OptionSpec("compiler", "as3")),
            new ConfigBoolean(new OptionSpec("compiler", "doc")),
            new ConfigBoolean(new OptionSpec("compiler", "es")),
            new ConfigBoolean(new OptionSpec("compiler", "generate-abstract-syntax-tree")),
            new ConfigBoolean(new OptionSpec("compiler", "headless-server")),
            new ConfigBoolean(new OptionSpec("compiler", "isolate-styles")),
            new ConfigBoolean(new OptionSpec("compiler", "keep-all-type-selectors")),
            new ConfigBoolean(new OptionSpec("compiler", "keep-generated-actionscript", "keep")),
            new ConfigBoolean(new OptionSpec("compiler", "verbose-stacktraces")),
            new ConfigBoolean(new OptionSpec("compiler", "advanced-telemetry")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-array-tostring-changes")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-assignment-within-conditional")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-bad-array-cast")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-bad-bool-assignment")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-bad-date-cast")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-bad-es3-type-method")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-bad-es3-type-prop")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-bad-nan-comparison")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-bad-null-assignment")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-bad-null-comparison")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-bad-undefined-comparison")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-boolean-constructor-with-no-args")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-changes-in-resolve")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-class-is-sealed")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-const-not-initialized")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-constructor-returns-value")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-deprecated-event-handler-error")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-deprecated-function-error")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-deprecated-property-error")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-duplicate-argument-names")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-duplicate-variable-def")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-for-var-in-changes")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-import-hides-classes")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-instance-of-changes")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-internal-error")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-level-not-supported")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-missing-namespace-decl")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-negative-uint-literal")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-no-constructor")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-no-explicit-super-call-in-constructor")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-no-type-decl")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-number-from-string-changes")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-scoping-change-in-this")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-slow-text-field-addition")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-unlikely-function-value")),
            new ConfigBoolean(new OptionSpec("compiler", "warn-xml-class-has-changed")),
            new ConfigBoolean(new OptionSpec("compiler", "generate-abstract-syntax-tree")),
            new ConfigBoolean(new OptionSpec("include-inheritance-dependencies-only")),
            new ConfigBoolean(new OptionSpec("include-lookup-only")),
            new ConfigBoolean(new OptionSpec("compute-digest")),
            new ConfigBoolean(new OptionSpec(null, "static-link-runtime-shared-libraries", "static-rsls")),
            new ConfigBoolean(new OptionSpec("use-direct-blit")),
            new ConfigBoolean(new OptionSpec("use-gpu")),
            
            //String Variables
            new ConfigString(new OptionSpec("compiler", "actionscript-file-encoding")),
            new ConfigString(new OptionSpec("compiler", "context-root")),
            new ConfigString(new OptionSpec("compiler", "defaults-css-url")),
            new ConfigString(new OptionSpec("compiler", "locale")),
            new ConfigString(new OptionSpec("compiler", "services")),
            new ConfigString(new OptionSpec("debug-password")),
            new ConfigString(new OptionSpec("dump-config")),
            new ConfigString(new OptionSpec("link-report")),
            new ConfigString(new OptionSpec("load-externs")),
            new ConfigString(new OptionSpec("raw-metadata")),
            new ConfigString(new OptionSpec("resource-bundle-list")),
            new ConfigString(new OptionSpec("size-report")),
            new ConfigString(new OptionSpec("target-player")),
            new ConfigString(new OptionSpec("compiler", "minimum-supported-version", "msv")),
            new ConfigString(new OptionSpec("compiler", "enable-swc-version-filtering", "esvf")),
            new ConfigString(new OptionSpec("tools-locale")),

            //Int Variables
            new ConfigInt(new OptionSpec("default-background-color")),
            new ConfigInt(new OptionSpec("default-frame-rate")),
            new ConfigInt(new OptionSpec("swf-version"))
        });

        nestedAttribs = new ArrayList<OptionSource>();
        nestedFileSets = new ArrayList<OptionSource>();

        outString = new ConfigString(new OptionSpec(null, "output", "o"));
        icStrings = new RepeatableConfigString(new OptionSpec(null, "include-classes", "ic"));
    }

    /*=======================================================================*
     * Required Attributes                                                   *
     *=======================================================================*/

    /* Necessary to override inherited setOutput method since ant gives
     * priority to parameter types more specific than String.
     */
    public void setOutput(File o)
    {
        setDynamicAttribute("output", o.getAbsolutePath());
    }
    
    public void setDynamicAttribute(String name, String value)
    {
        /* Handle required attributes and then delegate to super */
        if (outString.matches(name))
        {
            outString.set(value);
        }
        else if (icStrings.matches(name))
            icStrings.addAll(value.split(" "));
        else 
            super.setDynamicAttribute(name, value);
    }
    
    /*=======================================================================*
     *  Child Elements                                                       *
     *=======================================================================*/

    public Metadata createMetadata() 
    {
        if (metadata == null)
            return metadata = new Metadata();
        else
            throw new BuildException("Only one nested <metadata> element is allowed in an <compc> task.");
    }

    public Fonts createFonts()
    {
        if (fonts == null)
            return fonts = new Fonts(this);
        else
            throw new BuildException("Only one nested <fonts> element is allowed in an <compc> task.");
    }

    public NestedAttributeElement createNamespace()
    {
        return createElem(new String[] { "uri", "manifest" }, nsSpec);
    }

    public NestedAttributeElement createLicense()
    {
        return createElem(new String[] { "product", "serial-number" }, liSpec);
    }

    public NestedAttributeElement createExterns()
    {
        return createElem("symbol", exSpec);
    }

    public NestedAttributeElement createIncludes()
    {
        return createElem("symbol", inSpec);
    }

    public NestedAttributeElement createFrame()
    {
        return createElem(new String[] { "label", "classname" }, frSpec);
    }

    public Object createDynamicElement(String name)
    {
        if (kmSpec.matches(name)) {
            return createElem("name", kmSpec);            
        }
        else if (rsSpec.matches(name)) {
            return createElem("url", rsSpec);
        }
        else if (rslpSpec.matches(name)) {
            RuntimeSharedLibraryPath runtimeSharedLibraryPath = new RuntimeSharedLibraryPath();
            nestedAttribs.add(runtimeSharedLibraryPath);
            return runtimeSharedLibraryPath;
        }
        else if (ccSpec.matches(name)) {
            return createElem(new String[] { "name", "value" }, ccSpec);
        }
        else if (lcSpec.matches(name)) {
        	return createElemAllowAppend(new String[] {"filename"} , lcSpec);
        }
        else if (spSpec.matches(name)) {
            return createElem("path-element", spSpec);
        }        
        else if (DefaultScriptLimits.spec.matches(name)) {
            if (dLimits == null)
                return dLimits = new DefaultScriptLimits();
            else
                throw new BuildException("Only one nested <default-script-limits> element is allowed in an <compc> task.");
        }
        else if (DefaultSize.spec.matches(name)) {
            if (dSize == null)
                return dSize = new DefaultSize();
            else
                throw new BuildException("Only one nested <default-size> element is allowed in an <compc> task.");
        }
        else if (elSpec.matches(name)) {
            FlexFileSet fs = new FlexSwcFileSet(elSpec, true);
            nestedFileSets.add(fs);
            return fs;
        }
        else if (ilSpec.matches(name)) {
            FlexFileSet fs = new FlexSwcFileSet(ilSpec, true);
            nestedFileSets.add(fs);
            return fs;
        }
        else if (lpSpec.matches(name)) {
            FlexFileSet fs = new FlexSwcFileSet(lpSpec, true);
            nestedFileSets.add(fs);
            return fs;
        }
        else if (thSpec.matches(name)) {
            FlexFileSet fs = new FlexFileSet(thSpec);
            nestedFileSets.add(fs);
            return fs;
        }
        else if (exSpec.matches(name)) {
            return createExterns();
        }
        /* The following are unique to compc */
        else if (icSpec.matches(name)) {
            return createElem("class", icSpec);
        }
        else if (ifSpec.matches(name)) {
            return createElem(new String[] { "name", "path" }, ifSpec);   
        }
        else if (insSpec.matches(name)) {
            return createElemAllowAppend(new String[] { "uri" }, insSpec);
        }
        else if (isSpec.matches(name)) {
            FlexFileSet fs = new FlexFileSet(isSpec, true);
            nestedFileSets.add(fs);
            return fs;
        }
        else if (irSpec.matches(name)) {
            return createElem("bundle", irSpec);
        }

        return super.createDynamicElement(name);
    }

    /*=======================================================================*
     *  Execute and Related Functions                                        *
     *=======================================================================*/

    protected void prepareCommandline() throws BuildException
    {
        for (int i = 0; i < variables.length; i++) {
            variables[i].addToCommandline(cmdl);
        }

        if (metadata != null)
            metadata.addToCommandline(cmdl);

        if(fonts != null)
            fonts.addToCommandline(cmdl);

        if (dLimits != null)
            dLimits.addToCommandline(cmdl);

        if (dSize != null)
            dSize.addToCommandline(cmdl);

        icStrings.addToCommandline(cmdl);

        Iterator<OptionSource> it = nestedAttribs.iterator();

        while (it.hasNext())
            it.next().addToCommandline(cmdl);

        it = nestedFileSets.iterator();

        while (it.hasNext())
            it.next().addToCommandline(cmdl);

        if (outString.isSet())
            outString.addToCommandline(cmdl);
        else 
            throw new BuildException(outString.getSpec().getFullName() + " attribute must be set!", getLocation());
    }

} //End of CompcTask