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/**

 * @test

 * @summary Verify that annotation processors inside modules works

 * @library /tools/lib

 * @modules jdk.compiler/com.sun.tools.javac.api

 *          jdk.compiler/com.sun.tools.javac.main

 * @build toolbox.ToolBox toolbox.JavacTask ModuleTestBase

 * @run main AnnotationProcessorsInModulesTest

 */

import java.nio.file.Files;

import java.nio.file.Path;

import java.util.Arrays;

import java.util.List;

import toolbox.JavacTask;

import toolbox.Task;

import toolbox.ToolBox;

public class AnnotationProcessorsInModulesTest extends ModuleTestBase {

    public static void main(String... args) throws Exception {

        new AnnotationProcessorsInModulesTest().runTests();

    }

    private static final String annotationProcessorModule1 =

            "module anno_proc1 {\n" +

            "    requires java.compiler;\n" +

            "\n" +

            "    provides javax.annotation.processing.Processor\n" +

            "      with mypkg1.MyProcessor1;\n" +

            "}";

    private static final String annotationProcessorModule2 =

            "module anno_proc2 {\n" +

            "    requires java.compiler;\n" +

            "\n" +

            "    provides javax.annotation.processing.Processor\n" +

            "      with mypkg2.MyProcessor2;\n" +

            "}";

    private static final String annotationProcessor1 =

            "package mypkg1;\n" +

            "\n" +

            "import javax.annotation.processing.AbstractProcessor;\n" +

            "import javax.annotation.processing.RoundEnvironment;\n" +

            "import javax.annotation.processing.SupportedAnnotationTypes;\n" +

            "import javax.lang.model.SourceVersion;\n" +

            "import javax.lang.model.element.*;\n" +

            "\n" +

            "import java.util.*;\n" +

            "\n" +

            "@SupportedAnnotationTypes(\"*\")\n" +

            "public final class MyProcessor1 extends AbstractProcessor {\n" +

            "\n" +

            "    @Override\n" +

            "    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {\n" +

            "        return false;\n" +

            "    }\n" +

            "\n" +

            "    @Override\n" +

            "    public SourceVersion getSupportedSourceVersion() {\n" +

            "        System.out.println(\"the annotation processor 1 is working!\");\n" +

            "        return SourceVersion.latest();\n" +

            "    }\n" +

            "}";

    private static final String annotationProcessor2 =

            "package mypkg2;\n" +

            "\n" +

            "import javax.annotation.processing.AbstractProcessor;\n" +

            "import javax.annotation.processing.RoundEnvironment;\n" +

            "import javax.annotation.processing.SupportedAnnotationTypes;\n" +

            "import javax.lang.model.SourceVersion;\n" +

            "import javax.lang.model.element.*;\n" +

            "\n" +

            "import java.util.*;\n" +

            "\n" +

            "@SupportedAnnotationTypes(\"*\")\n" +

            "public final class MyProcessor2 extends AbstractProcessor {\n" +

            "\n" +

            "    @Override\n" +

            "    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {\n" +

            "        return false;\n" +

            "    }\n" +

            "\n" +

            "    @Override\n" +

            "    public SourceVersion getSupportedSourceVersion() {\n" +

            "        System.out.println(\"the annotation processor 2 is working!\");\n" +

            "        return SourceVersion.latest();\n" +

            "    }\n" +

            "}";

    private static final String testClass = "class Test{}";

    void initialization(Path base) throws Exception {

        moduleSrc = base.resolve("anno_proc_src");

        Path anno_proc1 = moduleSrc.resolve("anno_proc1");

        Path anno_proc2 = moduleSrc.resolve("anno_proc2");

        processorCompiledModules = base.resolve("mods");

        Files.createDirectories(processorCompiledModules);

        tb.writeJavaFiles(

                anno_proc1,

                annotationProcessorModule1,

                annotationProcessor1);

        tb.writeJavaFiles(

                anno_proc2,

                annotationProcessorModule2,

                annotationProcessor2);

        String log = new JavacTask(tb)

                .options("-modulesourcepath", moduleSrc.toString())

                .outdir(processorCompiledModules)

                .files(findJavaFiles(moduleSrc))

                .run()

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!log.isEmpty()) {

            throw new AssertionError("Unexpected output: " + log);

        }

        classes = base.resolve("classes");

        Files.createDirectories(classes);

    }

    Path processorCompiledModules;

    Path moduleSrc;

    Path classes;

    @Test

    public void testUseOnlyOneProcessor(Path base) throws Exception {

        initialization(base);

        String log = new JavacTask(tb)

                .options("-processormodulepath", processorCompiledModules.toString(),

                        "-processor", "mypkg2.MyProcessor2")

                .outdir(classes)

                .sources(testClass)

                .run()

                .writeAll()

                .getOutput(Task.OutputKind.STDOUT);

        if (!log.trim().equals("the annotation processor 2 is working!")) {

            throw new AssertionError("Unexpected output: " + log);

        }

    }

    @Test

    public void testAnnotationProcessorExecutionOrder(Path base) throws Exception {

        initialization(base);

        List<String> log = new JavacTask(tb)

                .options("-processormodulepath", processorCompiledModules.toString(),

                        "-processor", "mypkg1.MyProcessor1,mypkg2.MyProcessor2")

                .outdir(classes)

                .sources(testClass)

                .run()

                .writeAll()

                .getOutputLines(Task.OutputKind.STDOUT);

        if (!log.equals(Arrays.asList("the annotation processor 1 is working!",

                                      "the annotation processor 2 is working!"))) {

            throw new AssertionError("Unexpected output: " + log);

        }

        log = new JavacTask(tb)

                .options("-processormodulepath", processorCompiledModules.toString(),

                        "-processor", "mypkg2.MyProcessor2,mypkg1.MyProcessor1")

                .outdir(classes)

                .sources(testClass)

                .run()

                .writeAll()

                .getOutputLines(Task.OutputKind.STDOUT);

        if (!log.equals(Arrays.asList("the annotation processor 2 is working!",

                                      "the annotation processor 1 is working!"))) {

            throw new AssertionError("Unexpected output: " + log);

        }

    }

    @Test

    public void testErrorOutputIfOneProcessorNameIsIncorrect(Path base) throws Exception {

        initialization(base);

        String log = new JavacTask(tb)

                .options("-XDrawDiagnostics", "-processormodulepath", processorCompiledModules.toString(),

                         "-processor", "mypkg2.MyProcessor2,noPackage.noProcessor,mypkg1.MyProcessor1")

                .outdir(classes)

                .sources(testClass)

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.STDOUT, Task.OutputKind.DIRECT).toString();

        if (!log.trim().equals("[the annotation processor 2 is working!, - compiler.err.proc.processor.not.found: noPackage.noProcessor, 1 error]")) {

            throw new AssertionError("Unexpected output: " + log);

        }

    }

    @Test

    public void testOptionsExclusion(Path base) throws Exception {

        initialization(base);

        List<String> log = new JavacTask(tb)

                .options("-XDrawDiagnostics", "-processormodulepath", processorCompiledModules.toString(),

                        "-processorpath", processorCompiledModules.toString())

                .outdir(classes)

                .sources(testClass)

                .run(Task.Expect.FAIL)

                .writeAll()

                .getOutputLines(Task.OutputKind.DIRECT);

        if (!log.equals(Arrays.asList("- compiler.err.processorpath.no.processormodulepath",

                                      "1 error"))) {

            throw new AssertionError("Unexpected output: " + log);

        }

    }

}