/* ###
 * 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.
 */
/*****************************************************************************************
	This file is a "mix-in" gradle script that individual gradle projects should include if they 
	have content for the Ghidra help system. A gradle project can include help support by adding
	the following to its build.gradle file.
	
		apply from: "$rootProject.projectDir/gradle/helpProject.gradle"
		
	Clients can register dependencies on other help modules by using the 
	'helpPath' configuration, like so:
	
		helpPath project(path: ":Base", configuration: 'helpPath')
		
	This example will put into the 'helpPath' configuration the project path of 
	'Base', using the value of it's 'helpPath' configuration.  This brings us to the next
	point--'helpPath' gets updated when the jar file is built to include the path of 
	the generated jar file.  This allows future clients of a given help module to get 
	the jar file path of that help module's output.
	
 *****************************************************************************************/
// The help modules must be configured first so that we can reference its runtime classpath

configurations {
	// The Help Build System takes optional paths to resolve dependencies.  Build files
	// that use this 'script plugin' may put project paths into this variable. 
	helpPath
}

artifacts {
	// The helpPath is updated to include the jar file output of the help build.
	helpPath jar
}

sourceSets {
	helpIndex {
		java {
		}
	}
	main {
		resources {
			srcDir 'src/main/help'
			srcDir 'build/help/main'
		}
	}
}

dependencies {
	helpIndexImplementation "javax.help:javahelp:2.0.05"
	helpIndexImplementation project(':Help')
}

// Task for calling the java help indexer, which creates a searchable index of the 
// help contents.
task indexHelp(type: JavaExec) {	

	group "private"
	description "indexes the helps files for this module.  [gradle/helpProject.gradle]"


	File helpRootDir = file('src/main/help/help')		
	File outputFile = file("build/help/main/help/${project.name}_JavaHelpSearch")	

	dependsOn configurations.helpPath

	inputs.dir helpRootDir
	outputs.dir outputFile
	
	classpath = sourceSets.helpIndex.runtimeClasspath
	
	mainClass = 'com.sun.java.help.search.Indexer'

	// tell the indexer where send its output	
	args '-db', outputFile.absolutePath

	// The index has a config file parameter.  The only thing we use in the config file
	// is a root directory path that should be stripped off all the help references to
	// make them relative instead of absolute	
	File configFile = file('build/helpconfig')	

	// gather up all the help files into a file collection
	FileTree helpFiles = fileTree('src/main/help') {
		include '**/*.htm'
		include '**/*.html'
	}
		
	// pass the config file we created as an argument to the indexer
	args '-c',"$configFile"	


	doFirst {
	
		if (helpFiles.isEmpty()) {
			// must have help to index
			throw new GradleException("No help files found")
		}
	
		// create the config file when the task runs and not during configuration.
		configFile.parentFile.mkdirs();
		configFile.write "IndexRemove ${helpRootDir.absolutePath}" + File.separator + "\n"
		
		// for each help file that was found, add it as an argument to the indexer
		helpFiles.each { File file ->
			args "${file.absolutePath}"
		}	
	}
}

// Task for building Ghidra help files 
// 		- depends on the output from the help indexer
task buildHelp(type: JavaExec, dependsOn: indexHelp) {
	group rootProject.GHIDRA_GROUP
	description "      Builds the help for this module.  [gradle/helpProject.gradle]\n"	

	File helpRootDir = file('src/main/help/help')	
	File outputDir = file('build/help/main/help')

	inputs.dir helpRootDir
	outputs.dir outputDir

	mainClass = 'help.GHelpBuilder'
	
	args '-n', "${project.name}"	 		// use the module's name for the help file name
	
	args '-o', "${outputDir.absolutePath}"	// set the output directory arg

	
	// args '-debug' // print debug info

	doFirst {		
		// this modules runtime classpath (contains jhall.jar)
		classpath project(':Help').sourceSets.main.runtimeClasspath		
	
		configurations.helpPath.each { 
			args "-hp"
			args "${it.absolutePath}"
		}
		
		// The help dir to process.  This needs to be the last argument to the process, 
		// thus, this is why it is inside of this block
		args "${helpRootDir.absolutePath}"	
	}

}


// Task for finding unused images that are not referenced from Ghidra help files 
task findUnusedHelp(type: JavaExec) {
	group rootProject.GHIDRA_GROUP
	description "      Finds unused help images for this module.  [gradle/helpProject.gradle]\n"	

	File helpRootDir = file('src/main/help/help')	
	File outputDir = file('build/help/main/help')

	dependsOn configurations.helpPath

	inputs.dir helpRootDir

	mainClass = 'help.validator.UnusedHelpImageFileFinder'

	// args '-debug' // print debug info

	doFirst {		
		classpath project(':Help').sourceSets.main.runtimeClasspath		
	
		// the current help dir to process
		args "-hp"
		args "${helpRootDir.absolutePath}"	
	}

}



// include the help into the module's jar
jar {
    duplicatesStrategy 'exclude'
	from "build/help/main"		// include the generated help index files
	from "src/main/help"		// include the help source files
}

// build the help whenever this module's jar file is built
processResources.dependsOn buildHelp
jar.dependsOn buildHelp


// make sure generated help directories exist during prepdev so that the directories are created and 
// eclipse doesn't complain about missing src directories.
rootProject.prepDev.dependsOn buildHelp