index.gradle

apply plugin: 'java'
apply plugin: 'groovy'

import groovy.json.*
import org.ajoberstar.grgit.*
import org.ajoberstar.grgit.exception.GrgitException

group = 'org.terasology'
version = '0.1.0'

def uploader = new Person(name: "Gooey", email: "gooey@terasology.org")
def creds = new Credentials(username: indexerUsername, password: indexerPassword)

def repoPath = project.file('module-index')
def repo;        // will be set in syncRepo

buildscript {
    repositories {
        // External libs - jcenter is Bintray and is supposed to be a superset of Maven Central, but do both just in case
        jcenter()
        mavenCentral()
    }

    dependencies {
        classpath 'org.ajoberstar:gradle-git:0.9.0'
    }
}

task syncRepo() << {

    try {
        logger.lifecycle("Opening repository $repoPath")
        repo = Grgit.open(repoPath, creds)

        logger.lifecycle("Performing pull..")
        repo.pull(rebase: false)
    } catch (Exception e) {
        // TODO: find a better way to test if the repo exists
        logger.lifecycle(e.message)
        logger.lifecycle("Cloning repository $repoPath")
        repo = Grgit.clone(dir: repoPath, uri: 'https://github.com/Terasology/Index.git', credentials: creds)
    }
}

task updateModuleInfo(type: Copy, dependsOn: syncRepo) {

    def targetFolder = "modules/$project.name"
    def fname = 'module.txt'

    from fname
    into "module-index/$targetFolder"

    doLast {
        repo.add(patterns: ["$targetFolder/$fname"])
    }
}

task updateIndexFile(dependsOn: syncRepo) {

    mustRunAfter updateModuleInfo

    // TODO: define inputs/outputs

    def repoRoot = repoPath;
    def modFolder = new File(repoRoot, 'modules')
    def modFiles = fileTree(modFolder) {
        include '**/module.txt'
    }

    def indexFile = file("$repoRoot/README.md")

    doLast {

        logger.info("Searching folder $modFolder")


        logger.lifecycle("Updating $indexFile")

        indexFile.text = '# Index\n\n'
        indexFile.text += '| ID | Version | Name | Author\n'
        indexFile.text += '|----|---------|------|-------\n'

        for (File file : modFiles.files) {
            def content = file.text
            def json = new JsonSlurper().parseText(content)
            indexFile.text += "| $json.id | $json.version | $json.displayName | $json.author |\n"
        }

        repo.add(patterns: [indexFile.name])
    }
}

task updateRepo(dependsOn: [updateModuleInfo, updateIndexFile]) << {
    // check for changes to avoid empty commits
    def changes = repo.status().staged.allChanges

    if (!changes.isEmpty()) {

        logger.lifecycle("Committing changes in $changes")

        repo.commit(author: uploader, committer: uploader, message: "Updating module info for $project.name")
        repo.push()
        logger.lifecycle("Pushed commits to remote")

    } else {
        logger.lifecycle("No files have been staged - skipping commit process")
    }
}