build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext.kotlin_version = '1.3.10'

    ext.library = [
        version: '0.12.1'
    ]

    ext.build = [
        compileSdkVersion: 27,
        targetSdkVersion: 27,
        minSdkVersion: 21, // So that we can publish for aarch64.
    ]

    repositories {
        google()
        jcenter()
        maven {
            url "https://plugins.gradle.org/m2/"
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // Publish.
        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4'
        classpath 'digital.wup:android-maven-publish:3.6.2'

        classpath 'gradle.plugin.org.mozilla.rust-android-gradle:plugin:0.8.0'

        // Yes, this is unusual.  We want to access some host-specific
        // computation at build time.
        classpath 'net.java.dev.jna:jna:4.5.2'

        // Downloading libs/ archives from Taskcluster.
        classpath 'de.undercouch:gradle-download-task:3.4.3'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

apply plugin: 'de.undercouch.download'

allprojects {
    repositories {
        google()
        jcenter()
    }
}

subprojects {
    apply plugin: 'digital.wup.android-maven-publish'

    // This allows to invoke Gradle like `./gradlew publishToRootProjectBuildDir` (equivalent to
    // `./gradlew publish`) and also `./gradlew publishToProjectBuildDir`.
    publishing {
        repositories {
            maven {
                name = "rootProjectBuildDir"
                url "file://${project.rootProject.buildDir}/maven"
            }
            maven {
                name = "projectBuildDir"
                url "file://${project.buildDir}/maven"
            }
        }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

// Avoid Gradle namespace collision.  This is here, rather than in `buildscript
// { ... }`, to avoid issues with importing.
import com.sun.jna.Platform as DefaultPlatform

// This is the output `git rev-parse HEAD:libs`.  We could discover this automatically, but
// let's keep things simple and bump this manually for a while.  If and when we grow SNAPSHOT
// support on maven.mozilla.org, we can invest in a better approach for versioning these
// prerequisite libraries.
//
// Set this to `= null` in order to use libs from the source directory.
ext.libsGitSha = '378c2052c0d04ec52d9de9ac949e568ba71c69a4'

if (rootProject.ext.libsGitSha != null) {
    task downloadAndroidLibs(type: Download) {
        src "https://index.taskcluster.net/v1/task/project.application-services.application-services.build.libs.android.${rootProject.ext.libsGitSha}/artifacts/public/target.tar.gz"
        dest new File(buildDir, "libs.android.${rootProject.ext.libsGitSha}.tar.gz")

        doFirst {
            if (it.dest.exists()) {
                throw new StopExecutionException("File to download already exists: ${it.dest.path}")
            }
        }
        overwrite true
    }

    task untarAndroidLibs(dependsOn: downloadAndroidLibs, type: Copy) {
        from tarTree(downloadAndroidLibs.dest)
        into rootProject.buildDir
    }

    task downloadDesktopLibs(type: Download) {
        src {
            switch (DefaultPlatform.RESOURCE_PREFIX) {
                case 'darwin':
                    return "https://index.taskcluster.net/v1/task/project.application-services.application-services.build.libs.desktop.macos.${rootProject.ext.libsGitSha}/artifacts/public/target.tar.gz"
                case 'linux-x86-64':
                    return "https://index.taskcluster.net/v1/task/project.application-services.application-services.build.libs.desktop.linux.${rootProject.ext.libsGitSha}/artifacts/public/target.tar.gz"
                case 'win32-x86-64':
                    return "https://index.taskcluster.net/v1/task/project.application-services.application-services.build.libs.desktop.win32-x86-64.${rootProject.ext.libsGitSha}/artifacts/public/target.tar.gz"
                default:
                    throw new GradleException("Unknown host platform '${DefaultPlatform.RESOURCE_PREFIX}'.  " +
                                              "Set `ext.libsGitSha = null` in ${rootProject.rootDir}/build.gradle and build your own libs.  " +
                                              "If you don't want to build your own libs for Android, you can untar\n\n${downloadAndroidLibs.src}\n\nat top-level to populate `libs/android/`.  " +
                                              "You'll need build your own libs for your host platform in order to be able to build and run unit tests.")
            }
        }

        dest {
            switch (DefaultPlatform.RESOURCE_PREFIX) {
                case 'darwin':
                    return new File(buildDir, "libs.desktop.macos.${rootProject.ext.libsGitSha}.tar.gz")
                case 'linux-x86-64':
                    return new File(buildDir, "libs.desktop.linux.${rootProject.ext.libsGitSha}.tar.gz")
                case 'win32-x86-64':
                    return new File(buildDir, "libs.desktop.win32-x86-64.${rootProject.ext.libsGitSha}.tar.gz")
                default:
                    throw new GradleException("Unknown host platform '${DefaultPlatform.RESOURCE_PREFIX}'.  " +
                                              "Set `ext.libsGitSha = null` in ${rootProject.rootDir}/build.gradle and build your own libs.")
            }
        }

        doFirst {
            if (it.dest.exists()) {
                throw new StopExecutionException("File to download already exists: ${it.dest.path}")
            }
        }
        overwrite true
    }

    task untarDesktopLibs(dependsOn: downloadDesktopLibs, type: Copy) {
        from tarTree(downloadDesktopLibs.dest)
        into rootProject.buildDir
    }

    subprojects { project ->
        afterEvaluate {
            android.libraryVariants.all { v ->
                def task = v.preBuild
                task.dependsOn(rootProject.untarAndroidLibs)
                task.dependsOn(rootProject.untarDesktopLibs)
            }
        }
    }
}

// Configure some environment variables, per toolchain, that will apply during
// the Cargo build.  We assume that the `libs/` directory has been populated
// before invoking Gradle (or Cargo).
ext.cargoExec = { spec, toolchain ->
    spec.environment("OPENSSL_STATIC", "1")

    // Use in-tree libs from the source directory in CI or if the git SHA is unset; otherwise use
    // downloaded libs.
    def libsRootDir = (System.getenv('CI') || ext.libsGitSha == null) ? rootProject.rootDir : rootProject.buildDir

    spec.environment("OPENSSL_DIR",           new File(libsRootDir, "libs/${toolchain.folder}/openssl").absolutePath)
    spec.environment("SQLCIPHER_LIB_DIR",     new File(libsRootDir, "libs/${toolchain.folder}/sqlcipher/lib").absolutePath)
    spec.environment("SQLCIPHER_INCLUDE_DIR", new File(libsRootDir, "libs/${toolchain.folder}/sqlcipher/include").absolutePath)
}

task zipMavenArtifacts(type: Zip) {
    from "${project.buildDir}/maven"

    include '**/*.aar'
    include '**/*.jar'
    include '**/*.pom'
    include '**/*.md5'
    include '**/*.sha1'

    // Metadata is generated by maven.mozilla.org directly
    exclude '**/*maven-metadata.xml*'

    archiveName "target.maven.zip"
    includeEmptyDirs = false
    destinationDir(file("${project.buildDir}"))
}