/* ###
 * IP: GHIDRA
 *
 * Licensed 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.
 */
apply plugin: 'eclipse'

apply from: 'gradle/root/eclipse.gradle'
apply from: "gradle/support/eclipseLauncher.gradle"
apply from: "gradle/support/loadApplicationProperties.gradle"


/***************************************************************************************
* Print current Gradle version and make sure the correct version of gradle is being used
***************************************************************************************/
import org.gradle.util.GradleVersion;
println "Gradle: " + GradleVersion.current().version
checkGradleVersion()

/***************************************************************************************
 * Define the location of JAVA_HOME
 ***************************************************************************************/
if (System.env.JAVA_HOME) {
	// Allow Gradle's default JAVA_HOME to be overridden by an environment variable we set
	project.ext.JAVA_HOME = System.env.JAVA_HOME;
}
else {
	project.ext.JAVA_HOME = "${System.properties.'java.home'}"
}

/***************************************************************************************
 * Make sure Gradle wasn't launched with a 32-bit Java...it can cause confusing errors
 ***************************************************************************************/
if ("32".equals(System.getProperty("sun.arch.data.model"))) {
	throw new GradleException("\n\n\t32-bit Java detected!  Please use 64-bit Java.\n\n");
}

/***************************************************************************************
 * Identify supported Python command
 ***************************************************************************************/
project.ext.SUPPORTED_PY_VERSIONS = ['3.12', '3.11', '3.10', '3.9']
project.ext.PYTHON3 = findPython3()

/*********************************************************************************
 *  Define the location of bin repo
 *********************************************************************************/
project.ext.GHIDRA_GROUP = "Z Ghidra"
project.ext.ROOT_PROJECT_DIR = projectDir.absolutePath
project.ext.BIN_REPO = file("${projectDir}/../ghidra.bin").absolutePath
project.ext.DEPS_DIR = file("${projectDir}/dependencies")

/*********************************************************************************
 *  Prevent forked Java processes from stealing focus
 *********************************************************************************/
allprojects {
	tasks.withType(JavaForkOptions) {
		jvmArgs '-Djava.awt.headless=true'
	}
}

/*********************************************************************************
 *  Use flat directory-style repository if flatRepo directory is present.
 *********************************************************************************/
def flatRepo = file("${DEPS_DIR}/flatRepo") 
if (flatRepo.isDirectory()) {
	allprojects {
		repositories {
			mavenLocal()
			mavenCentral()
			jcenter()
			flatDir name: "flat", dirs:["$flatRepo"]
		}
	}
}
else {	
	File f = file("ghidra.repos.config")
	if (!f.exists()) {
		throw new GradleException("\n\n\n\tUnable to find the local maven repo." +  
			"  Ensure you have created the ${flatRepo.getName()} directory or ${f.getName()} file.\n\n\n");
	}
}

/*********************************************************************************
 * Imports
 *  For these tasks to be available on all subprojects, this MUST be placed 
 *	after the "setupJava" configuration.
 *
 * Note: Distribution.gradle and distributionNew.gradle must not be applied at the
 * 		same time; they have tasks with the same name. The former is the 'old' way
 * 		of building (produces several zips) while the former produces only one. 
 * 		Eventually distribution.gradle will be removed entirely, but it is included
 *		here for the time being for those who need it.
 *********************************************************************************/
apply from: "GPL/utils.gradle"                // adds utilities used in both Ghidra and GPL projects
apply from: "GPL/nativePlatforms.gradle"      // adds native platform support
apply from: "gradle/root/test.gradle"         // adds tasks for running tests
apply from: "gradle/root/prepDev.gradle"      // adds prepDev task for each subproject
apply from: 'gradle/root/distribution.gradle' // adds zip tasks
apply from: 'gradle/root/usage.gradle'        // adds task documentation
apply from: "gradle/root/svg.gradle"          // adds task to process svg files
apply from: "gradle/root/jacoco.gradle"       // adds tasks for java code coverage


apply plugin: 'base'
clean {
	delete "$buildDir"
}

/*********************************************************************************
 * Throws a GradleException if the current Gradle version is outside of the supported
 * Gradle version range defined in application.properties.
 *
 * NOTE: This function is duplicated in buildExtension.gradle
 *********************************************************************************/
import org.gradle.util.GradleVersion;
def checkGradleVersion() {
	GradleVersion min = null;
	GradleVersion max = null;
	try {
		min = GradleVersion.version("${rootProject.GRADLE_MIN}")
	}
	catch (IllegalArgumentException e) {
		String defaultMin = "1.0"
		println "Invalid minimum Gradle version specified in application.properties...using ${defaultMin}"
		min = GradleVersion.version(defaultMin)
	}
	try {
		if (rootProject.GRADLE_MAX) {
			max = GradleVersion.version("${rootProject.GRADLE_MAX}")
		}
	}
	catch (IllegalArgumentException e) {
		println "Invalid maximum Gradle version specified in application.properties...ignoring"
	}
	String gradleRange = "at least ${min}"
	if (max) {
		gradleRange += " and less than ${max}"		
	}
	if (GradleVersion.current() < min || (max && GradleVersion.current() >= max)) {
		throw new GradleException("Requires ${gradleRange}, but was run with $gradle.gradleVersion")
	}
}


/*********************************************************************************
 * Identifies supported python3 command to be used when building and checks for pip install.
 * Although warnings may be produced no exception is thrown since python only required
 * for specific build tasks and is not required for prepdev
 *********************************************************************************/
def checkPythonVersion(String pyCmd) {
	try {
		def stdout = new ByteArrayOutputStream()
		exec {
			commandLine pyCmd, "-c", "import sys; print('{0}.{1}'.format(*sys.version_info))"
			standardOutput = stdout
			errorOutput = OutputStream.nullOutputStream()
		}
		def version = "$stdout".strip()
		return version
	}
	catch (Exception e) {
		return "ABSENT"
	}
}

def checkPip(String pyCmd) {
	try {
		def stdout = new ByteArrayOutputStream()
		exec {
			commandLine pyCmd, "-c", "import pip; print(pip.__version__)"
			standardOutput = stdout
			errorOutput = OutputStream.nullOutputStream()
		}
		def version = "$stdout".strip();
		if (version.length() == 0) {
			println("Warning: Python3 pip not installed (required for build)")
		}
		else {
			println("Python3 pip version: ${version}")
		}
		return version
	}
	catch (Exception e) {
		println("Warning: Python3 pip not installed (required for build)")
	}
}

def findPython3() {
	for (pyCmd in ['py', 'python3', 'python']) {
		def pyVer = checkPythonVersion(pyCmd)
		if (pyVer in SUPPORTED_PY_VERSIONS) {
			println("Python3 command:  ${pyCmd} (version ${pyVer})")
			checkPip(pyCmd)
			return pyCmd
		}
	}
	for (pyVer in SUPPORTED_PY_VERSIONS) {
		def pyCmd = "python${pyVer}"
		if (checkPythonVersion(pyCmd) in SUPPORTED_PY_VERSIONS) {
			println("Python3 command:  ${pyCmd}")
			checkPip(pyCmd)
			return pyCmd
		}
	}
	// Don't fail until task execution. Just let "python3" fail.
	// Force use of non-existent python3.9 instead of unsupported python version
	// which should fail if a python build is performed.
	println("Warning: Python3 command not found (required for build)")
	return 'python3.9'
}

/******************************************************************************************
 *
 * Utility methods used by multiple build.gradle files
 *
 *****************************************************************************************/	

/*********************************************************************************
 * Returns a relative path from the root (ghidra) to the project's directory.
 * This is used to determine where inside a zip file to place a particular artifact
 *  (we want them to all start at "Ghidra/...."
 *
 * ie: If we have the following:
 * 			project dir = /Users/<blah>/git/ghidra.master/ghidra/Ghidra/Features/Base
 *	 		root project = /Users/<blah>/git/ghidra.master/ghidra/Ghidra
 *
 *	 	Then the returned value will be:
 *	 		Ghidra/Features/Base 
 * 
 *  There are two special cases - Projects that live outside ghidra and projects
 *  that are extension projects.  Projects that live outside ghidra will
 *  have zip paths that make the project appear as if it did live in ghidra.
 *  Projects that extend other projects will appear as though they live in the project
 *  that they extend.  See the note at the top of the distribution.gradle file for more details.
 *********************************************************************************/
def getZipPath(Project p) {
	
	String path = getGhidraRelativePath(p)
		
	// if the project has been defined as an "extension" to another project, change its
	// zip path to the path of its "base" project.  A project is an extension if it has
	// defined an "extendsFromProject" property.
	
	if (p.hasProperty('extendsFromProject')) {
		Project baseProject = p.extendsFromProject
		path = getGhidraRelativePath(baseProject);
	}
	
	if (p.hasProperty("pathExtension")) {
		path = path + "/" + p.pathExtension
	}

	return path
}

def getBaseProjectName(Project p) {
	if (p.hasProperty('extendsFromProject')) {
		Project baseProject = p.extendsFromProject
		return baseProject.name
	}
	
	return p.name
}

/*********************************************************************************
 * Returns the current date formatted as yyyyMMdd.
 *********************************************************************************/
def getCurrentDate() {

	def date = new Date()
	def formattedDate = date.format('yyyyMMdd')
	return formattedDate
}

/*********************************************************************************
 * Returns the current date/time formatted as yyyyMMdd-HHmm.
 *********************************************************************************/
def getCurrentDateTime() {

	def date = new Date()
	def formattedDate = date.format('yyyyMMdd-HHmm')
	return formattedDate
}

/*********************************************************************************
 * Returns the current date/time formatted as yyyy-MMM-dd HHmm z.
 *********************************************************************************/
def getCurrentDateTimeLong() {

	def date = new Date()
	def formattedDate = date.format('yyyy-MMM-dd HHmm z')
	return formattedDate
}

/*********************************************************************************
 * Returns a list of all the external library paths declared as dependencies for the 
 *         given project  
 *
 *********************************************************************************/
List<String> getExternalRuntimeDependencies(Project project) {
	List<String> list = new ArrayList<String>()

	if (project.configurations.find { it.name == 'api' }) {
		list.addAll(getExternalRuntimeDependencies(project, project.configurations.api));
	}
	if (project.configurations.find { it.name == 'implementation' }) {
		list.addAll(getExternalRuntimeDependencies(project, project.configurations.implementation));
	}
	if (project.configurations.find { it.name == 'runtimeOnly' }) {
		list.addAll(getExternalRuntimeDependencies(project, project.configurations.runtimeOnly));
	}

	return list
}

List<String> getExternalRuntimeDependencies(Project project, Configuration configuration) {
	List<String> list = new ArrayList<>();
	configuration.dependencies.each { dep ->

		// if the dependency is an external jar
		if (dep instanceof ExternalDependency) { 	
			String name = dep.getName()
			Set<String> classifiers = dep.artifacts.classifier
			String group = dep.getGroup()
			String version = dep.getVersion()	
			String searchString = name

			if (version != null) {
				searchString = name+"-"+version;
			}

			if (!classifiers.empty) {
				String cls = classifiers.first()
				if (cls != null) {
					searchString+= "-$cls"
				}
			}
			// search for the dependency in the runtime class path
			String depPath = project.configurations.runtimeClasspath.find {
				it.name.contains(searchString)
			}

			if (depPath == null) {
				println("****************DID NOT FIND DEPENDENCY: name = "+name+" version = "+version)
			}
			// if we found the path, then add it to the list
			if (depPath) {
				list.add(depPath)
			}
		}	
	}
	return list;
}



/******************************************************************************************
 * 
 * Creates a file that lists the libraries used by each module.
 *
 ******************************************************************************************/
String generateLibraryDependencyMapping() {
	File libsFile = file("$buildDir/libraryDependencies.txt")
	
	// Check to make sure the build folder exists - if it doesn't, the 'libsFile.withWriter'
	// call (below) will fail miserably.
	def buildFolder = file ("$buildDir")
	if (!buildFolder.exists()) {
		buildFolder.mkdirs()
	}
	
	libsFile.withWriter { out ->
		subprojects { p ->
			p.plugins.withType(JavaPlugin) {
				List<String> libs = getExternalRuntimeDependencies(p);
				if (libs != null) {
					out.println "Module: $p.name"
					libs.each { path ->
						out.println "\t$path"
					}
				}
			}
		}
	}
	return libsFile.absolutePath
}

task allSleighCompile {
}