/*
	This gradle file is a 'script plugin'.  That is, a script that provides features 
	meant to be used by other build files via an 'apply' call like so:
	
		apply from: "$rootProject.projectDir/gradleScripts/buildHelp.gradle"
		
	This call will pull in the tasks in this file.   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.
	
*/
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 {
	helpIndexCompile "javax.help:javahelp:2.0.05"
}

// 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.  [gradleScripts/buildHelp.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
	
	main = '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.  [gradleScripts/buildHelp.gradle]\n"	


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

	inputs.dir helpRootDir
	outputs.dir outputDir

	// this modules runtime classpath (contains jhall.jar)
	classpath = project(':Help').sourceSets.main.runtimeClasspath		

	main = '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 {		
	
		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}"	
	}

}

// include the help into the module's jar
jar {
	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
jar.dependsOn 'buildHelp'