BuildScripts/gradle/commonStaticAnalysis.gradle

apply plugin: 'cpd'
apply plugin: 'io.gitlab.arturbosch.detekt'

def getCpdTask
def getLintTask
def getKotlinDetektTasks

def appendError
def appendCpdErrors
def appendKotlinErrors
def appendLintErrors

repositories {
    maven { url "http://dl.bintray.com/touchin/touchin-tools" }
}

configurations {
    pngtastic
}

cpd {
    skipLexicalErrors = true
}

import org.apache.tools.ant.taskdefs.condition.Os

ext.getIdeaFormatTask = { isAndroidProject, sources ->
    def ideaPath = System.getenv("IDEA_HOME")
    if (ideaPath == null) {
        return tasks.create((isAndroidProject ? "android" : "server") + "donothing")
    }
    return tasks.create((isAndroidProject ? "android" : "server") + "IdeaFormat_$project.name", Exec) {
        def inspectionPath
        def params = ["-r", "-mask", "*.java,*.kt,*.xml"]
        for (String source : sources) {
            params.add(source)
        }

        if (Os.isFamily(Os.FAMILY_WINDOWS)) {
            inspectionPath = ['cmd', '/c', "\"${ideaPath}\\bin\\format.bat\" ${params.join(" ")}"]
        } else {
            inspectionPath = ["$ideaPath/bin/format.sh"]
        }
        commandLine inspectionPath
        if (!Os.isFamily(Os.FAMILY_WINDOWS)) {
            args = params
        }
    }
}

ext.getStaticAnalysisTaskNames = { isAndroidProject, sources, buildVariant ->
    def tasksNames = new ArrayList<String>()
    try {
        tasksNames.add(getCpdTask(isAndroidProject, sources))
        tasksNames.addAll(getKotlinDetektTasks())
        if (isAndroidProject) {
            tasksNames.add(getLintTask(buildVariant))
        }
    } catch (Exception exception) {
        println(exception.toString())
    }
    return tasksNames
}

ext.generateReport = { isAndroidProject ->
    StringBuilder consoleReport = new StringBuilder()
    consoleReport.append("STATIC ANALYSIS RESULTS:")
    def count = 0

    def previousCount = count
    count = appendCpdErrors(count, new File("${project.buildDir}/reports/cpd.xml"))
    if (count - previousCount > 0) {
        consoleReport.append("\nCPD: FAILED (" + (count - previousCount) + " errors)")
    } else {
        consoleReport.append("\nCPD: PASSED")
    }

    previousCount = count
    subprojects.forEach { subproject ->
        def reportFile = new File("${rootProject.buildDir}/reports/kotlin-detekt-${subproject.name}.xml")
        if (reportFile.exists()) {
            count = appendKotlinErrors(count, reportFile).toInteger()
        }
    }
    if (count - previousCount > 0) {
        consoleReport.append("\nKotlin-detekt: FAILED (" + (count - previousCount) + " errors)")
    } else {
        consoleReport.append("\nKotlin-detekt: PASSED")
    }

    if (isAndroidProject) {
        previousCount = count
        count = appendLintErrors(count, new File("${rootProject.buildDir}/reports/lint_report.xml"))
        if (count - previousCount > 0) {
            consoleReport.append("\nLint: FAILED (" + (count - previousCount) + " errors)")
        } else {
            consoleReport.append("\nLint: PASSED")
        }
    }

    if (count > 0) {
        consoleReport.append("\nOverall: FAILED (" + count + " errors)")
        throw new Exception(consoleReport.toString())
    } else {
        consoleReport.append("\nOverall: PASSED")
        println(consoleReport.toString())
    }
}

appendError = { number, analyzer, file, line, errorId, errorLink, description ->
    println("$number. $analyzer : $description ($errorId)\n\tat $file: $line")
}

appendKotlinErrors = { count, checkstyleFile ->
    def rootNode = new XmlParser().parse(checkstyleFile)
    for (def fileNode : rootNode.children()) {
        if (!fileNode.name().equals("file")) {
            continue
        }

        for (def errorNode : fileNode.children()) {
            if (!errorNode.name().equals("error")) {
                continue
            }
            count++

            appendError(count, "Detekt", fileNode.attribute("name"), errorNode.attribute("line"), errorNode.attribute("source"), "", errorNode.attribute("message"))
        }
    }
    return count
}

appendCpdErrors = { count, cpdFile ->
    def rootNode = new XmlParser().parse(cpdFile)
    for (def duplicationNode : rootNode.children()) {
        if (!duplicationNode.name().equals("duplication")) {
            continue
        }
        count++

        def duplicationIndex = 0

        String duplicationPoints = ""
        for (def filePointNode : duplicationNode.children()) {
            if (filePointNode.name().equals("file")) {
                def file = filePointNode.attribute("path")
                def line = filePointNode.attribute("line")
                duplicationPoints += "\n " + file + ":" + line
                duplicationIndex++
            }
        }
        println("$count CPD: code duplication $duplicationPoints")
    }
    return count
}

appendLintErrors = { count, lintFile ->
    def rootNode = new XmlParser().parse(lintFile)
    for (def issueNode : rootNode.children()) {
        if (!issueNode.name().equals("issue")
                || !issueNode.attribute("severity").equals("Error")) {
            continue
        }
        for (def locationNode : issueNode.children()) {
            if (!locationNode.name().equals("location")) {
                continue
            }
            count++
            appendError(count, "Lint", locationNode.attribute("file"), locationNode.attribute("line"),
                    issueNode.attribute("id"), issueNode.attribute("explanation"), issueNode.attribute("message"))
        }
    }
    return count
}

getCpdTask = { isAndroidProject, sources ->
    def taskName = (isAndroidProject ? "android" : "server") + "cpd_${rootProject.name}"
    def task = tasks.findByName(taskName)
    if (task == null) {
        task = tasks.create(taskName, tasks.findByName('cpdCheck').getClass().getSuperclass()) {
            minimumTokenCount = 60
            source = files(sources)
            ignoreFailures = true
            reports {
                xml {
                    enabled = true
                    destination = file("${rootProject.buildDir}/reports/cpd.xml")
                }
            }
        }
    }
    return task.path
}

getLintTask = { buildVariant ->
    def appProject = subprojects.find { it.plugins.hasPlugin("com.android.application") }
    def lintTaskPath
    if (buildVariant != null) {
        lintTaskPath = ":${appProject.name}:lint${buildVariant.name.capitalize()}"
    } else {
        def lintDebugTasks = appProject.tasks.matching { it.getName().contains("lint") && it.getName().contains("Debug") }
        lintTaskPath = lintDebugTasks.first().path
    }
    if (lintTaskPath == null) {
        throw IllegalStateException("Unable to find lint debug task for build variant: ${buildVariant}")
    }
    return lintTaskPath
}

getKotlinDetektTasks = {
    subprojects
            .findResults { it.tasks.findByName("detekt")?.path }
            .findAll { !it.contains(":libs") }
}

task optimizePng {
    doFirst {
        def jarArgs = new ArrayList<String>()
        jarArgs.add(configurations.pngtastic.asPath)
        def relatedPathIndex = "${rootDir}".length() + 1
        for (def file : fileTree(dir: "${rootDir}", include: '**/src/**/res/drawable**/*.png')) {
            jarArgs.add(file.absolutePath.substring(relatedPathIndex))
        }
        for (def file : fileTree(dir: "${rootDir}", include: '**/src/**/res/mipmap**/*.png')) {
            jarArgs.add(file.absolutePath.substring(relatedPathIndex))
        }
        javaexec { main = "-jar"; args = jarArgs; workingDir = file("${rootDir}") }
    }
}

dependencies {
    pngtastic 'com.github.depsypher:pngtastic:1.2'
}