plugins {
    id 'com.github.eerohele.dita-ot-gradle' version '0.6.0'
    id 'com.github.eerohele.saxon-gradle' version '0.7.0'
}

import com.github.eerohele.DitaOtTask
import com.github.eerohele.SaxonXsltTask

def getPropertyOrDefault(String name, def defaultValue) {
    hasProperty(name) ? findProperty(name) : defaultValue
}

String ditaHome = getPropertyOrDefault('ditaHome', projectDir.getParent())
String ditaHomeSrc = getPropertyOrDefault('ditaHomeSrc', ditaHome)
String configDir = "${ditaHomeSrc}/config"
String ditavalFile = "${projectDir}/platform.ditaval"
Boolean toolkitBuild = file("${projectDir}/../lib/dost.jar").exists()
String samplesDir = toolkitBuild ? "${ditaHome}/docsrc/samples" : "${projectDir}/samples"
String outputDir = getPropertyOrDefault('outputDir', toolkitBuild ? "${ditaHome}/doc" : "${projectDir}/out")

String toURI(String path) {
    file(path).toURI().toString()
}

ditaOt.dir ditaHome

task messages(type: SaxonXsltTask) {
    input "${configDir}/messages.xml"
    output "${projectDir}/topics/error-messages.xml"
    stylesheet "${projectDir}/resources/messages.xsl"
}

task params(type: SaxonXsltTask) {
    input "${configDir}/plugins.xml"
    output "${projectDir}/parameters/all-parameters.dita"
    stylesheet "${projectDir}/resources/params.xsl"
    parameters('output-dir.url': toURI('parameters'))
    outputs.dir "${projectDir}/parameters"
}

task extensionPoints(type: SaxonXsltTask) {
    input "${configDir}/plugins.xml"
    output "${projectDir}/extension-points/all-extension-points.dita"
    stylesheet "${projectDir}/resources/extension-points.xsl"
    parameters('output-dir.url': toURI('extension-points'))
    outputs.dir "${projectDir}/extension-points"
}

task generatePlatformFilter {
    ant.condition(property: 'platform', value: 'windows') {
        os(family: 'windows')
    }

    ant.condition(property: 'platform', value: 'mac' ) {
        os(family: 'mac')
    }

    ant.condition(property: 'platform', value: 'unix' ) {
        os(family: 'unix')
    }

    ant.echoxml(file: ditavalFile) {
        val {
            prop(action: 'include', att: 'platform', val: platform)
            prop(action: 'exclude', att: 'platform')
        }
    }
}

task generatePropertiesTemplate(type: SaxonXsltTask) {
    input "${configDir}/plugins.xml"
    output "${samplesDir}/properties/template.properties"
    stylesheet "${projectDir}/resources/properties-file.xsl"
}

task autoGenerate(dependsOn: [messages, params, extensionPoints, generatePlatformFilter, generatePropertiesTemplate]) {
    description 'Run tasks that generate content from resource files and the build environment.'
}

task pdf(type: DitaOtTask, dependsOn: autoGenerate) {
    input "${projectDir}/userguide-book.ditamap"
    output outputDir
    transtype 'pdf'
    filter "${projectDir}/resources/pdf.ditaval"

    properties {
        property(file: "${projectDir}/samples/properties/docs-build-pdf.properties")
    }
}

task html(type: DitaOtTask, dependsOn: autoGenerate) {
    input "${projectDir}/userguide.ditamap"
    output outputDir
    transtype 'html5'
    filter "${projectDir}/resources/html.ditaval"

    properties {
        property(file: "${projectDir}/samples/properties/docs-build-html5.properties")
    }
}

task htmlhelp(type: DitaOtTask, dependsOn: autoGenerate) {
    input "${projectDir}/userguide.ditamap"
    output outputDir
    transtype 'htmlhelp'
    filter ditavalFile

    properties {
        property(file: "${projectDir}/samples/properties/docs-build-htmlhelp.properties")
    }

    doLast {
        ant.move(todir: outputDir, failonerror: 'no') {
            fileset(dir: "${outputDir}/htmlhelp", includes: '*.chm')
        }

        ant.delete(dir: "${outputDir}/htmlhelp")
    }
}

task cleanUp {
    doLast {
        ant.delete(dir: outputDir)
    }
}

def commit = new ByteArrayOutputStream()

task gitMetadata {
  doLast {
    exec {
        workingDir = projectDir
        commandLine 'git'
        args = ['rev-parse', 'HEAD']
        standardOutput = commit
    }
  }
}

task site(type: DitaOtTask) {
    dependsOn 'messages', 'params', 'extensionPoints', 'gitMetadata'

    input file("${projectDir}/site.ditamap")
    output getPropertyOrDefault('outputDir', "${buildDir}/site")
    filter "${projectDir}/resources/site.ditaval"

    transtype 'org.dita-ot.html'

    properties {
        property(name: 'args.gen.task.lbl', value: 'YES')
        property(name: 'args.rellinks', value: 'noparent')
        property(name: 'commit', value: commit)
    }
}

task all(dependsOn: [pdf, html, htmlhelp])
task dist(dependsOn: [pdf, html])

defaultTasks 'dist'