/*******************************************************************************
 * Copyright (c) 2000, 2020 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.ui.tests.core;

import java.util.Hashtable;

import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;

import org.eclipse.jdt.testplugin.JavaProjectHelper;
import org.eclipse.jdt.testplugin.TestOptions;

import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.formatter.DefaultCodeFormatterConstants;
import org.eclipse.jdt.core.manipulation.OrganizeImportsOperation;
import org.eclipse.jdt.core.manipulation.OrganizeImportsOperation.IChooseImportQuery;

import org.eclipse.jdt.ui.tests.core.rules.Java1d8ProjectTestSetup;

/**
 * Those tests are made to run on Java Spider 1.8 .
 */
public class ImportOrganizeTest1d8 extends ImportOrganizeTest {
	@Rule
	public Java1d8ProjectTestSetup j18p= new Java1d8ProjectTestSetup();

	private IJavaProject fJProject1;

	@Before
	public void before() throws Exception {
		fJProject1= Java1d8ProjectTestSetup.getProject();

		Hashtable<String, String> options= TestOptions.getDefaultOptions();
		options.put(DefaultCodeFormatterConstants.FORMATTER_NUMBER_OF_EMPTY_LINES_TO_PRESERVE, String.valueOf(99));
		JavaCore.setOptions(options);
	}


	@After
	public void after() throws Exception {
		setOrganizeImportSettings(null, 99, 99, fJProject1);
		JavaProjectHelper.clear(fJProject1, Java1d8ProjectTestSetup.getDefaultClasspath());
	}

	@Test
	public void typeUseAnnotationImport1() throws Exception { // PrimitiveType
		IPackageFragmentRoot sourceFolder= JavaProjectHelper.addSourceContainer(fJProject1, "src");

		IPackageFragment pack0= sourceFolder.createPackageFragment("pack0", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package pack0;\n");
		buf.append("@Target(ElementType.TYPE_USE)\n");
		buf.append("public @interface TypeUse {\n");
		buf.append("}\n");
		pack0.createCompilationUnit("TypeUse.java", buf.toString(), false, null);

		IPackageFragment pack1= sourceFolder.createPackageFragment("pack1", false, null);
		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("public class C{\n");
		buf.append("    @TypeUse int i;\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("C.java", buf.toString(), false, null);

		String[] order= new String[] {};
		IChooseImportQuery query= createQuery("MyClass", new String[] {}, new int[] {});

		OrganizeImportsOperation op= createOperation(cu, order, 99, false, true, true, query);
		op.run(null);

		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("\n");
		buf.append("import pack0.TypeUse;\n");
		buf.append("\n");
		buf.append("public class C{\n");
		buf.append("    @TypeUse int i;\n");
		buf.append("}\n");
		assertEqualString(cu.getSource(), buf.toString());
	}

	@Test
	public void typeUseAnnotationImport2() throws Exception { // SimpleType
		IPackageFragmentRoot sourceFolder= JavaProjectHelper.addSourceContainer(fJProject1, "src");

		IPackageFragment pack0= sourceFolder.createPackageFragment("pack0", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package pack0;\n");
		buf.append("@Target(ElementType.TYPE_USE)\n");
		buf.append("public @interface TypeUse {\n");
		buf.append("}\n");
		pack0.createCompilationUnit("TypeUse.java", buf.toString(), false, null);

		IPackageFragment pack1= sourceFolder.createPackageFragment("pack1", false, null);
		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("public class C{\n");
		buf.append("    ArrayList<@TypeUse String> list1;\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("C.java", buf.toString(), false, null);

		String[] order= new String[] {};
		IChooseImportQuery query= createQuery("MyClass", new String[] {}, new int[] {});

		OrganizeImportsOperation op= createOperation(cu, order, 99, false, true, true, query);
		op.run(null);

		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("\n");
		buf.append("import java.util.ArrayList;\n");
		buf.append("import pack0.TypeUse;\n");
		buf.append("\n");
		buf.append("public class C{\n");
		buf.append("    ArrayList<@TypeUse String> list1;\n");
		buf.append("}\n");
		assertEqualString(cu.getSource(), buf.toString());
	}

	@Test
	public void typeUseAnnotationImport3() throws Exception { // QualifiedType
		IPackageFragmentRoot sourceFolder= JavaProjectHelper.addSourceContainer(fJProject1, "src");

		IPackageFragment pack0= sourceFolder.createPackageFragment("pack0", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package pack0;\n");
		buf.append("@Target(ElementType.TYPE_USE)\n");
		buf.append("public @interface TypeUse {\n");
		buf.append("}\n");
		pack0.createCompilationUnit("TypeUse.java", buf.toString(), false, null);

		IPackageFragment pack1= sourceFolder.createPackageFragment("pack1", false, null);
		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("public class C{\n");
		buf.append("    ArrayList<@TypeUse A.B> list2;\n");
		buf.append("}\n");
		buf.append("\n");
		buf.append("class A {\n");
		buf.append("    public class B {\n");
		buf.append("        \n");
		buf.append("    }\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("C.java", buf.toString(), false, null);

		String[] order= new String[] {};
		IChooseImportQuery query= createQuery("MyClass", new String[] {}, new int[] {});

		OrganizeImportsOperation op= createOperation(cu, order, 99, false, true, true, query);
		op.run(null);

		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("\n");
		buf.append("import java.util.ArrayList;\n");
		buf.append("import pack0.TypeUse;\n");
		buf.append("\n");
		buf.append("public class C{\n");
		buf.append("    ArrayList<@TypeUse A.B> list2;\n");
		buf.append("}\n");
		buf.append("\n");
		buf.append("class A {\n");
		buf.append("    public class B {\n");
		buf.append("        \n");
		buf.append("    }\n");
		buf.append("}\n");
		assertEqualString(cu.getSource(), buf.toString());
	}

	@Test
	public void typeUseAnnotationImport4() throws Exception { // PackageQualifiedType
		IPackageFragmentRoot sourceFolder= JavaProjectHelper.addSourceContainer(fJProject1, "src");

		IPackageFragment pack0= sourceFolder.createPackageFragment("pack0", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package pack0;\n");
		buf.append("@Target(ElementType.TYPE_USE)\n");
		buf.append("public @interface TypeUse {\n");
		buf.append("}\n");
		pack0.createCompilationUnit("TypeUse.java", buf.toString(), false, null);

		IPackageFragment pack1= sourceFolder.createPackageFragment("pack1", false, null);
		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("public class C{\n");
		buf.append("    ArrayList<java.io.@TypeUse FileNotFoundException> list;\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("C.java", buf.toString(), false, null);

		String[] order= new String[] {};
		IChooseImportQuery query= createQuery("MyClass", new String[] {}, new int[] {});

		OrganizeImportsOperation op= createOperation(cu, order, 99, false, true, true, query);
		op.run(null);

		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("\n");
		buf.append("import java.util.ArrayList;\n");
		buf.append("import pack0.TypeUse;\n");
		buf.append("\n");
		buf.append("public class C{\n");
		buf.append("    ArrayList<java.io.@TypeUse FileNotFoundException> list;\n");
		buf.append("}\n");
		assertEqualString(cu.getSource(), buf.toString());
	}

	@Test
	public void typeUseAnnotationImport5() throws Exception { // WildcardType
		IPackageFragmentRoot sourceFolder= JavaProjectHelper.addSourceContainer(fJProject1, "src");

		IPackageFragment pack0= sourceFolder.createPackageFragment("pack0", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package pack0;\n");
		buf.append("@Target(ElementType.TYPE_USE)\n");
		buf.append("public @interface TypeUse {\n");
		buf.append("}\n");
		pack0.createCompilationUnit("TypeUse.java", buf.toString(), false, null);

		IPackageFragment pack1= sourceFolder.createPackageFragment("pack1", false, null);
		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("public class C{\n");
		buf.append("    ArrayList<@TypeUse ?> list3;\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("C.java", buf.toString(), false, null);

		String[] order= new String[] {};
		IChooseImportQuery query= createQuery("MyClass", new String[] {}, new int[] {});

		OrganizeImportsOperation op= createOperation(cu, order, 99, false, true, true, query);
		op.run(null);

		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("\n");
		buf.append("import java.util.ArrayList;\n");
		buf.append("import pack0.TypeUse;\n");
		buf.append("\n");
		buf.append("public class C{\n");
		buf.append("    ArrayList<@TypeUse ?> list3;\n");
		buf.append("}\n");
		assertEqualString(cu.getSource(), buf.toString());
	}

	@Test
	public void typeUseAnnotationImport6() throws Exception { // ArrayType
		IPackageFragmentRoot sourceFolder= JavaProjectHelper.addSourceContainer(fJProject1, "src");

		IPackageFragment pack0= sourceFolder.createPackageFragment("pack0", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package pack0;\n");
		buf.append("@Target(ElementType.TYPE_USE)\n");
		buf.append("public @interface TypeUse {\n");
		buf.append("}\n");
		pack0.createCompilationUnit("TypeUse.java", buf.toString(), false, null);

		IPackageFragment pack1= sourceFolder.createPackageFragment("pack1", false, null);
		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("public class C{\n");
		buf.append("    int[] arr = new int @TypeUse [5];\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("C.java", buf.toString(), false, null);

		String[] order= new String[] {};
		IChooseImportQuery query= createQuery("MyClass", new String[] {}, new int[] {});

		OrganizeImportsOperation op= createOperation(cu, order, 99, false, true, true, query);
		op.run(null);

		buf= new StringBuffer();
		buf.append("package pack1;\n");
		buf.append("\n");
		buf.append("import pack0.TypeUse;\n");
		buf.append("\n");
		buf.append("public class C{\n");
		buf.append("    int[] arr = new int @TypeUse [5];\n");
		buf.append("}\n");
		assertEqualString(cu.getSource(), buf.toString());
	}

	@Test
	public void staticMethodReferenceImports_bug424172() throws Exception {
		IPackageFragmentRoot sourceFolder= JavaProjectHelper.addSourceContainer(fJProject1, "src");

		IPackageFragment pack0= sourceFolder.createPackageFragment("p", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package p;\n");
		buf.append("\n");
		buf.append("import java.util.function.IntPredicate;\n");
		buf.append("\n");
		buf.append("class UnusedStaticImport {\n");
		buf.append("    boolean value = match(Character::isUpperCase, 'A');\n");
		buf.append("\n");
		buf.append("    public static boolean match(IntPredicate matcher, int codePoint) {\n");
		buf.append("        return matcher.test(codePoint);\n");
		buf.append("    }\n");
		buf.append("}\n");
		ICompilationUnit cu= pack0.createCompilationUnit("UnusedStaticImport.java", buf.toString(), false, null);

		String[] order= new String[] {};
		IChooseImportQuery query= createQuery("StaticMethodReferenceImports_bug424172", new String[] {}, new int[] {});

		OrganizeImportsOperation op= createOperation(cu, order, 99, false, true, true, query);
		op.run(null);

		buf= new StringBuffer();
		buf.append("package p;\n");
		buf.append("\n");
		buf.append("import java.util.function.IntPredicate;\n");
		buf.append("\n");
		buf.append("class UnusedStaticImport {\n");
		buf.append("    boolean value = match(Character::isUpperCase, 'A');\n");
		buf.append("\n");
		buf.append("    public static boolean match(IntPredicate matcher, int codePoint) {\n");
		buf.append("        return matcher.test(codePoint);\n");
		buf.append("    }\n");
		buf.append("}\n");
		assertEqualString(cu.getSource(), buf.toString());
	}

	@Test
	public void methodReferenceImports_bug424227() throws Exception {
		IPackageFragmentRoot sourceFolder= JavaProjectHelper.addSourceContainer(fJProject1, "src");

		IPackageFragment pack0= sourceFolder.createPackageFragment("p0", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package p0;\n");
		buf.append("@FunctionalInterface\n");
		buf.append("public interface FI {\n");
		buf.append("    FI foo();\n");
		buf.append("}\n");
		pack0.createCompilationUnit("FI.java", buf.toString(), false, null);

		buf= new StringBuffer();
		buf.append("package p0;\n");
		buf.append("public class X {\n");
		buf.append("    public static FI staticMethodX() {\n");
		buf.append("        return null;\n");
		buf.append("    }\n");
		buf.append("}\n");
		pack0.createCompilationUnit("X.java", buf.toString(), false, null);

		IPackageFragment pack1= sourceFolder.createPackageFragment("p1", false, null);
		buf= new StringBuffer();
		buf.append("package p1;\n");
		buf.append("\n");
		buf.append("public class C1 {\n");
		buf.append("    FI fi = X::staticMethodX;\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("C1.java", buf.toString(), false, null);

		String[] order= new String[] {};
		IChooseImportQuery query= createQuery("MethodReferenceImports_bug424227", new String[] {}, new int[] {});

		OrganizeImportsOperation op= createOperation(cu, order, 99, false, true, true, query);
		op.run(null);

		buf= new StringBuffer();
		buf.append("package p1;\n");
		buf.append("\n");
		buf.append("import p0.FI;\n");
		buf.append("import p0.X;\n");
		buf.append("\n");
		buf.append("public class C1 {\n");
		buf.append("    FI fi = X::staticMethodX;\n");
		buf.append("}\n");
		assertEqualString(cu.getSource(), buf.toString());
	}
}