// Builds a Ghidra Extension for a given Ghidra installation.
//
// An absolute path to the Ghidra installation directory must be supplied either by setting the 
// GHIDRA_INSTALL_DIR environment variable or Gradle project property:
//
//     > export GHIDRA_INSTALL_DIR=<Absolute path to Ghidra> 
//     > gradle
//
//         or
//
//     > gradle -PGHIDRA_INSTALL_DIR=<Absolute path to Ghidra>
//
// Gradle should be invoked from the directory of the project to build.  Please see the
// application.gradle.version property in <GHIDRA_INSTALL_DIR>/Ghidra/application.properties
// for the correction version of Gradle to use for the Ghidra installation you specify.

//----------------------START "DO NOT MODIFY" SECTION------------------------------
def ghidraInstallDir

if (System.env.GHIDRA_INSTALL_DIR) {
	ghidraInstallDir = System.env.GHIDRA_INSTALL_DIR
}
else if (project.hasProperty("GHIDRA_INSTALL_DIR")) {
	ghidraInstallDir = project.getProperty("GHIDRA_INSTALL_DIR")
}

if (ghidraInstallDir) {
	apply from: new File(ghidraInstallDir).getCanonicalPath() + "/support/buildExtension.gradle"
}
else {
	throw new GradleException("GHIDRA_INSTALL_DIR is not defined!")
}
//----------------------END "DO NOT MODIFY" SECTION-------------------------------

def DISTRIBUTION_DIR = file("dist")
def PATH_IN_ZIP = "${project.name}"

def getGitHash = {
    def stdout = new ByteArrayOutputStream()
    exec {
        commandLine 'git', 'rev-parse', '--short', 'HEAD'
        standardOutput = stdout
    }
    return stdout.toString().trim()
}

wrapper {
    gradleVersion = '7.5.1'
    distributionType = Wrapper.DistributionType.BIN
}

repositories {
    mavenCentral()
}

configurations {
    localDeps
}

dependencies {
    implementation fileTree(dir: ghidraInstallDir + '/Ghidra/Processors', include: "**/*.jar")
    localDeps group: 'org.lz4', name: 'lz4-java', version: '1.5.1'
    implementation configurations.localDeps
}

buildExtension {
    baseName "${project.name}-${project.version}-${getGitHash()}-Ghidra_${ghidra_version}".replace(' ', '_')
    extension 'zip'
    destinationDir DISTRIBUTION_DIR
    version ''
    
    // Make sure that we don't try to copy the same file with the same path into the
    // zip (this can happen!)
    duplicatesStrategy 'exclude'
    
    // This filtered property file copy must appear before the general 
    // copy to ensure that it is prefered over the unmodified file
    File propFile = new File(project.projectDir, "extension.properties")
    from (propFile) {
        String version = "${ghidra_version}"
        String name = "${project.name}"
        filter (org.apache.tools.ant.filters.ReplaceTokens, tokens: [extversion: version])
        filter (org.apache.tools.ant.filters.ReplaceTokens, tokens: [extname: name])
        into PATH_IN_ZIP
    }
    
    from (project.jar) {
        into PATH_IN_ZIP + "/lib"
    }

    // Copy lz4 and any other dependencies that only we rely on
    from (configurations.localDeps) {
        into PATH_IN_ZIP + "/lib"
    }
        
    from (project.projectDir) {
        exclude 'build/**'
        exclude '*.gradle'
        exclude 'certification.manifest'
        exclude 'dist/**'
        exclude 'bin/**'
        exclude 'lib/**'
        exclude 'gradle/**'
        exclude 'src/**'
        exclude '.git/**'
        exclude '.idea/**'
        exclude '.github/**'
        exclude '.gradle/**'
        exclude 'gradle/**'
        exclude 'gradlew'
        exclude 'gradlew.bat'
        exclude '.classpath'
        exclude '.project'
        exclude '.settings/**'
        exclude 'developer_scripts'
        exclude '.antProperties.xml'
        exclude 'eclipse/**'
        
        into PATH_IN_ZIP
    }

    doLast {
        println "\nCreated " + baseName + "." + extension + " in " + destinationDir
    }
}

tasks.withType(Copy).all { duplicatesStrategy 'exclude' }

jar {
   duplicatesStrategy(DuplicatesStrategy.EXCLUDE)
}