/*
 * generated by Xtext 2.10.0
 */
package be.uantwerpen.ansymo.semanticadaptation.cg.cpp.tests

import be.uantwerpen.ansymo.semanticadaptation.cg.cpp.generation.BuildUtilities
import be.uantwerpen.ansymo.semanticadaptation.cg.cpp.generation.CppGenerator
import be.uantwerpen.ansymo.semanticadaptation.cg.cpp.tests.CMakeUtil.CMakeGenerateException
import be.uantwerpen.ansymo.semanticadaptation.semanticAdaptation.SemanticAdaptation
import be.uantwerpen.ansymo.semanticadaptation.cg.cpp.generation.CMakeListsGenerator
import be.uantwerpen.ansymo.semanticadaptation.testframework.FmuMainTestGenerator
import be.uantwerpen.ansymo.semanticadaptation.tests.AbstractSemanticAdaptationTest
import be.uantwerpen.ansymo.semanticadaptation.tests.SemanticAdaptationInjectorProvider
import com.google.inject.Inject
import java.io.File
import java.io.FileFilter
import java.io.FileWriter
import java.nio.file.Files
import java.nio.file.Paths
import java.util.regex.Pattern
import org.apache.commons.io.FileUtils
import org.eclipse.emf.ecore.EObject
import org.eclipse.emf.ecore.resource.ResourceSet
import org.eclipse.xtext.generator.InMemoryFileSystemAccess
import org.eclipse.xtext.testing.InjectWith
import org.eclipse.xtext.testing.XtextRunner
import org.eclipse.xtext.testing.util.ParseHelper
import org.eclipse.xtext.testing.validation.ValidationTestHelper
import org.junit.Assert
import org.junit.BeforeClass
import org.junit.Ignore
import org.junit.Test
import org.junit.runner.RunWith
import org.eclipse.xtext.generator.IGeneratorContext

@RunWith(XtextRunner)
@InjectWith(SemanticAdaptationInjectorProvider)
class CgCppBasicTest extends AbstractSemanticAdaptationTest {

// @Inject CppGenerator underTest
	@Inject extension ParseHelper<SemanticAdaptation>
	@Inject extension  ValidationTestHelper

	val static hcfRoot = Paths.get("target", "hcfDummy", "hcf").toFile()

	@BeforeClass
	def static setupHcf() {
		if (!CMakeUtil.windows) {
			FileUtils.write(new File(hcfRoot.parentFile, "CMakeLists.txt"),
				CMakeListsGenerator.generateCMakeListsHcfDummy());

			val cmake = new CMakeUtil(true)
			try {
				Assert.assertTrue("Expected cmake to parse", cmake.generate(hcfRoot.parentFile));
				Assert.assertTrue("Expected no make errors", cmake.make(hcfRoot.parentFile));
			} catch (CMakeGenerateException e) {
				e.printStackTrace
			}
		}
	}

	@Ignore
	@Test def window_sa_canonical() {
		__parseNoErrors('test_input/single_folder_spec/window/window_sa_canonical.BASE.sa', 'generated', "powerwindow");
//		__parseNoErrorsWithValidation('test_input/single_folder_spec/window',
//			'test_input/single_folder_spec/window/window_sa_canonical.BASE.sa');
	}

	@Test def window_sa_canonical_new() {
		__parseNoErrors('test_input/single_folder_spec/window/window_sa_canonical_new.BASE.sa', 'generated',
			"powerwindow");
	}

	@Test def lazy_canonical() {
		__parseNoErrors('test_input/single_folder_spec/lazy/lazy_canonical.sa', 'generated', "lazy");
	}

	@Test def loop() {
		__parseNoErrors('test_input/single_folder_spec/loop/loop_canonical.sa', 'generated', "loop");
	}

	@Test def rate() {
		__parseNoErrors('test_input/single_folder_spec/rate/rate.sa', 'generated', "rate");
	}

	@Test def rate_canonical() {
		__parseNoErrors('test_input/single_folder_spec/rate/rate_canonical.sa', 'generated', "rate_canonical");
	}

	@Test def power() {
		__parseNoErrors('test_input/single_folder_spec/power/power.BASE.sa', 'generated', 'power');
	}

	@Test def rollback_test() {
		__parseNoErrors('test_input/single_folder_spec/rollback_test/rollback_test.sa', 'generated', 'rollback_test');
	}

	@Test def controller_test() {
		__parseNoErrors('test_input/single_folder_spec/controller/controller.sa', 'generated', 'controller');
	}

	def __parseNoErrorsWithValidation(String directory, String filename) {
		val model = __parse(filename);
		__assertNoParseErrors(model, filename);

		val correctFileDirectory = new File(directory + File.separator + "correct");

		val fsa = new InMemoryFileSystemAccess()
		val IGeneratorContext ctxt = null;
		val cppGen = new CppGenerator();
		cppGen.doGenerate(model.eResource, fsa, ctxt);

		for (files : fsa.allFiles.entrySet) {
			val filename2 = files.key.substring(14);
			val file = new File(correctFileDirectory, filename2);
			val correctFileContent = Files.readAllLines(file.toPath);

			var path = new File("generated");
			if (path.exists)
				path.delete
			else
				path.mkdir;

			path = new File(path, files.key.substring(14))

			val FileWriter writer = new FileWriter(path);
			writer.write(files.value.toString);
			writer.close;

			val testFileContent = Files.readAllLines(path.toPath);

			if (correctFileContent.size != testFileContent.size) {
				System.out.println("Error: Lines are of different length in file: " + filename2);
			} else {
				for (var i = 0; i < testFileContent.size; i++) {
					val testLine = testFileContent.get(i);
					val correctLine = correctFileContent.get(i);
					if (testLine.compareTo(correctLine) != 0) {
						if (!testLine.contains("guid")) {
							System.out.println("ERROR: The following lines are not equal: \n" + testLine + "\n" +
								correctLine);
						}
					}
				}
			}
		}

	}

	def __parseNoErrors(String filename, String directory, String projectName) {
		val saRootDir = Paths.get("target", directory, projectName).toFile();
		val srcGenPath = new File(saRootDir, "sources")
		val resourcesPath = new File(saRootDir, "resources");

		val model = __parse(filename)
		__assertNoParseErrors(model, filename)

		val fsa = new InMemoryFileSystemAccess();
		val IGeneratorContext ctxt = null;
		val cppGen = new CppGenerator();
		cppGen.doGenerate(model.eResource, fsa, ctxt);

		if (saRootDir.exists) {
			BuildUtilities.deleteFolder(saRootDir);
		}

		saRootDir.mkdirs();
		srcGenPath.mkdirs();
		resourcesPath.mkdirs();

		for (files : fsa.allFiles.entrySet) {
			val fName = files.key.substring(14);

			var File fp;
			if (fName.equals("modelDescription.xml")) {
				fp = new File(saRootDir, fName);
			} else {
				fp = new File(srcGenPath, fName);
			}

			BuildUtilities.writeToFile(fp, files.value.toString);
		}

		val mainCpp = FmuMainTestGenerator.generateMainCppFile(resourcesPath.absolutePath.replace("\\", "\\\\"));
		BuildUtilities.writeToFile(new File(srcGenPath, "main.cpp"), mainCpp);

		for (rf : cppGen.resourcePaths) {
			val sinkFile = new File(resourcesPath, rf.name);
			System.out.println("Copied file to: " + sinkFile);
			BuildUtilities.copyFile(rf, sinkFile);
		}

		BuildUtilities.writeToFile(new File(saRootDir, "CMakeLists.txt"),
			CMakeListsGenerator.generateCMakeLists(projectName));

		val cMakeToolChain = CMakeListsGenerator.generateToolChainCmake();
		BuildUtilities.writeToFile(new File(saRootDir, "msys-toolchain.cmake"), cMakeToolChain);

		if (!CMakeUtil.windows) {
			val cmake = new CMakeUtil(true)
			FileUtils.copyDirectory(hcfRoot, new File(saRootDir, "hcf"), new FileFilter() {

				override accept(File pathname) {
					return !pathname.name.equals("CMakeCache.txt")
				}

			})
			Assert.assertTrue("Expected cmake to parse", cmake.generate(saRootDir));
			Assert.assertTrue("Expected no make errors", cmake.make(saRootDir));
			Assert.assertTrue("Failed to pack the FMU", cmake.make(saRootDir,"pack"));
		}
	}

	def __parseNoErrorsPrint(String filename) {
		val root = __parse(filename)
		print_ast(root)
		__assertNoParseErrors(root, filename)
	}

	def __parse(String filename) {
		return readFile(filename).parse
	}

	def __parse(
		String filename,
		ResourceSet resourceSetToUse
	) {

		return readFile(filename).parse(resourceSetToUse)
	}

	def __assertNoParseErrors(EObject root, String filename) {
		try {
			root.assertNoErrors
		} catch (AssertionError e) {
			val p = Pattern.compile(".*, offset (?<offset>[0-9]+), length (?<length>[0-9]+)")
			val code = readFile(filename)
			for (String line : e.message.split("\n")) {
				val m = p.matcher(line)
				m.matches()
				val count = __occurrencesInString(code.subSequence(0, Integer.valueOf(m.group("offset"))).toString(),
					"\n")
				print(filename + " at line " + (count + 1) + ": ")
				println(line)
			}
			throw e
		}
	}

	def __occurrencesInString(String str, String findstr) {
		var lastIndex = 0
		var count = 0
		while (lastIndex != -1) {
			lastIndex = str.indexOf(findstr, lastIndex)
			if (lastIndex != -1) {
				count++
				lastIndex += findstr.length()
			}
		}
		return count
	}

}