@*
 * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 *@

@import org.opendaylight.mdsal.binding2.java.api.generator.util.TextTemplateUtil.getFormattedRevision
@import org.opendaylight.mdsal.binding2.java.api.generator.util.TextTemplateUtil.getSourcePath
@import org.opendaylight.mdsal.binding2.java.api.generator.renderers.YangModuleInfoTemplateRenderer.getSortedQName
@import org.opendaylight.mdsal.binding2.util.BindingMapping.getClassName
@import org.opendaylight.mdsal.binding2.util.BindingMapping.getRootPackageName
@import org.opendaylight.mdsal.binding2.util.BindingMapping.MODULE_INFO_CLASS_NAME
@import org.opendaylight.yangtools.yang.model.api.Module
@import org.opendaylight.yangtools.yang.model.api.SchemaContext

@(module: Module, ctx: SchemaContext, importedNames: Map[String, String])
@if(module != null && ctx != null) {
public final class @{MODULE_INFO_CLASS_NAME} implements @{importedNames.get("yangModuleInfo")} {

    private static final @{importedNames.get("yangModuleInfo")} INSTANCE = new @{MODULE_INFO_CLASS_NAME}();

    private final @{importedNames.get("string")} name = "@{module.getName}";
    private final @{importedNames.get("string")} namespace = "@{module.getNamespace.toString}";
    private final @{importedNames.get("string")} revision = "@{getFormattedRevision(module.getRevision)}";
    private final @{importedNames.get("string")} resourcePath = "@{getSourcePath(module)}";
    private final @{importedNames.get("set")}<YangModuleInfo> importedModules;

    public static @{importedNames.get("yangModuleInfo")} getInstance() {
        return INSTANCE;
    }

    @{classBody(module, MODULE_INFO_CLASS_NAME)}
}
}

@generateSubInfo(module: Module) = {
@for(submodule <- module.getSubmodules) {
    private static final class @{getClassName(submodule.getName)}Info implements @{importedNames.get("yangModuleInfo")} {

        private static final @{importedNames.get("yangModuleInfo")} INSTANCE = new @{getClassName(submodule.getName)}Info();

        private final @{importedNames.get("string")} name = "@{submodule.getName}";
        private final @{importedNames.get("string")} namespace = "@{submodule.getNamespace.toString}";
        private final @{importedNames.get("string")} revision = "@{getFormattedRevision(submodule.getRevision)}";
        private final @{importedNames.get("string")} resourcePath = "@{getSourcePath(submodule)}";
        private final @{importedNames.get("set")}<YangModuleInfo> importedModules;

        public static @{importedNames.get("yangModuleInfo")} getInstance() {
            return INSTANCE;
        }

        @{classBody(submodule, getClassName(submodule.getName + "Info"))}
    }
}
}

@classBody(module: Module, className: String) = {
    private @{className}() {
        @if(!module.getImports.isEmpty || !module.getSubmodules.isEmpty) {
            @{importedNames.get("set")}<@{importedNames.get("yangModuleInfo")}> set = new @{importedNames.get("hashSet")}<>();
        }
        @if(!module.getImports.isEmpty) {
            @for(moduleImport <- module.getImports) {
                @if(moduleImport.getRevision == null) {
                    set.add(@{getRootPackageName(getSortedQName(ctx.getModules, moduleImport.getModuleName))}.@{MODULE_INFO_CLASS_NAME}.getInstance());
                } else {
                    set.add(@{getRootPackageName(ctx.findModuleByName(moduleImport.getModuleName, moduleImport.getRevision))}.@{MODULE_INFO_CLASS_NAME}.getInstance());
                }
            }
        }
        @if(!module.getSubmodules.isEmpty) {
            @for(submodule <- module.getSubmodules) {
                set.add(@{getClassName(submodule.getName)}Info.getInstance());
            }
        }
        @if(!module.getImports.isEmpty && !module.getSubmodules.isEmpty) {
            importedModules = @{importedNames.get("collections")}.emptySet();
        } else {
            importedModules = @{importedNames.get("immutableSet")}.copyOf(set);
        }

        @{importedNames.get("inputStream")} stream = @{MODULE_INFO_CLASS_NAME}.class.getResourceAsStream(resourcePath);
        if (stream == null) {
            throw new IllegalStateException("Resource '" + resourcePath + "' is missing");
        }
        try {
            stream.close();
        } catch (@{importedNames.get("iOException")} e) {
        // Resource leak, but there is nothing we can do
        }
    }

    @@Override
    public @{importedNames.get("string")} getName() {
        return name;
    }

    @@Override
    public @{importedNames.get("string")} getRevision() {
        return revision;
    }

    @@Override
    public @{importedNames.get("string")} getNamespace() {
        return namespace;
    }

    @@Override
    public @{importedNames.get("inputStream")} getModuleSourceStream() throws IOException {
        @{importedNames.get("inputStream")} stream = @{MODULE_INFO_CLASS_NAME}.class.getResourceAsStream(resourcePath);
        if (stream == null) {
            throw new @{importedNames.get("iOException")}("Resource " + resourcePath + " is missing");
        }
        return stream;
    }

    @@Override
    public @{importedNames.get("set")}<@{importedNames.get("YangModuleInfo")}> getImportedModules() {
        return importedModules;
    }

    @@Override
    public @{importedNames.get("string")} toString() {
        @{importedNames.get("stringBuilder")} sb = new @{importedNames.get("stringBuilder")}(this.getClass().getCanonicalName());
        sb.append("[");
        sb.append("name = " + name);
        sb.append(", namespace = " + namespace);
        sb.append(", revision = " + revision);
        sb.append(", resourcePath = " + resourcePath);
        sb.append(", imports = " + importedModules);
        sb.append("]");
        return sb.toString();
    }

    @{generateSubInfo(module)}
}