build.gradle

import com.google.googlejavaformat.java.Formatter
import com.google.googlejavaformat.java.JavaFormatterOptions

import java.nio.charset.StandardCharsets
import java.nio.file.Files
import java.nio.file.Path
import java.nio.file.Paths
import java.util.stream.Collectors

buildscript {
    ext.kotlin_version = '1.6.10'
    project.ext {
        compileSdk = 31
        buildTools = "31.0.0"
        minSdk = 26
        targetSdk = 28
        versionCode = 201
        versionName = "2.0.1-beta"
        packageName = "com.itsaky.androidide"

        javaSourceVersion = JavaVersion.VERSION_11
        javaTargetVersion = JavaVersion.VERSION_11
    }

    repositories {
        google()
        mavenLocal()
        mavenCentral()
        maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
        maven { url 'https://jitpack.io' }
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:7.1.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.googlejavaformat:google-java-format:1.15.0'
    }
}

//dependencies {
//    implementation 'com.google.googlejavaformat:google-java-format:1.15.0'
//}

subprojects {
    apply from: "${rootDir}/gradle/dependencies.gradle"

    project.afterEvaluate {
        tasks.register("checkTranslations", task -> {
            def php = new File("/usr/bin/php")
            if (!php.exists()) {
                project.logger.lifecycle("'${php.absolutePath}' not found. Skipping translation check.")
                return
            }

            def resDir = project.file("src/main/res")
            def strings = new File(resDir, "values/strings.xml")
            def reportDir = new File(project.rootProject.buildDir, "translation-reports")
            reportDir.delete()

            if (resDir.exists() && strings.exists()) {
                def translationDirs = resDir.listFiles((FileFilter) (file -> {
                    return file.isDirectory() && file.getName().startsWith("values-")
                }))
                for (def dir : translationDirs) {
                    final var translation = new File(dir, "strings.xml")
                    if (translation.exists()) {
                        def out = new File(reportDir, "${project.path.replace(':', '/')}/${dir.name}.txt")
                        if (!out.parentFile.exists()) {
                            out.parentFile.mkdirs()
                        }

                        if (out.exists()) {
                            out.delete()
                        }
                        out.createNewFile()

                        def result = exec {
                            ignoreExitValue true
                            standardOutput new FileOutputStream(out)
                            commandLine "${php.absolutePath}",
                                    "${project.rootProject.file(".tools/strings-check.php")}",
                                    "${strings.absolutePath}",
                                    "${translation.absolutePath}"
                        }

                        if (result.getExitValue() == 0) {
                            out.delete()
                        } else {
                            project.logger.lifecycle("Translation report for '${project.path}/${dir.name}' is written to '${out.absolutePath}'")
                        }

                    } else {
                        project.logger.info("No translation file specifed for '${dir.name}'. Skipping..")
                    }
                }
            } else {
                project.logger.info("Default strings.xml file does not exist for project '${project.name}'")
            }
        })
    }
}

allprojects {
    repositories {
        google()
        mavenLocal()
        mavenCentral()
        maven { url 'https://jitpack.io' }
    }
}

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

Collection<String> walkForSources(Path dir) {
    try {

        if (!Files.exists(dir)) {
            return Collections.emptySet()
        }

        return Files.walk(dir)
                .filter(path -> !Files.isDirectory(path))
                .filter(path -> Files.isReadable(path) && Files.isWritable(path))
                .map(path -> path.toFile())
                .map(file -> file.absolutePath)
                .filter(path -> path.endsWith(".java"))
                .filter(path -> !path.endsWith("_template.java"))
                .collect(Collectors.toSet())
    } catch (Throwable error) {
        getLogger().error("Could not walk directory for java sources: ${dir.toString()}", error)
        return Collections.emptySet()
    }
}

boolean doJavaFormat(Formatter formatter, String path) {
    try {
        final def file = Paths.get(path)
        final def content = Files.readAllBytes(file)
        final def utf8Decoded = new String(content, StandardCharsets.UTF_8.name())
        final def formatted = formatter.formatSource(utf8Decoded)
        if (utf8Decoded == formatted) {
            getLogger().info("{}: UP-TO-DATE", file)
            return true
        }

        byte[] utf8Encoded = formatted.getBytes(StandardCharsets.UTF_8.name())
        Files.write(file, utf8Encoded)
        println("${path}: Formatted successfully!")
        return true
    } catch (Throwable th) {
        getLogger().error("Failed to format ${path}", th)
        return false
    }
}

task formatJavaSources() {
    doLast {
        def jarName = "google-java-format-1.15.0-all-deps"
        def jar = rootProject.file(".tools/${jarName}.jar")

        if (!jar.exists()) {
            getLogger().info("google-java-format JAR file not found. Skipping format task...")
            return
        }

        boolean formattingChanges = false
        rootProject.subprojects.forEach(sub -> {
            def sources = walkForSources(sub.file("src/main/java").toPath())
            sources.addAll(walkForSources(sub.file("src/test/java").toPath()))

            final def formatter = new Formatter(
                    JavaFormatterOptions
                            .builder()
                            .style(JavaFormatterOptions.Style.AOSP)
                            .formatJavadoc(true)
                            .build()
            )

            for (def path : sources) {
                if (doJavaFormat(formatter, path)) {
                    formattingChanges = true
                }
            }
        })

        if (!formattingChanges) {
            getLogger().info("No formatting changes.")
            return
        }

        // ---------------- Stage Changes -------------------
        def out = new ByteArrayOutputStream()
        def exit = rootProject.exec {
            ignoreExitValue true
            standardOutput out
            errorOutput standardOutput
            commandLine "git", "add", "."
        }

        if (exit.exitValue != 0) {
            getLogger().error("Unable to stage changes. Process terminated with exit code ${exit.exitValue}")
            getLogger().error(out.toString())
            return
        }

        // ----------------- Commit Changes --------------------
        out = new ByteArrayOutputStream()
        exit = rootProject.exec {
            ignoreExitValue true
            standardOutput out
            errorOutput standardOutput
            commandLine "git", "commit", "-m", "[Gradle] Format java source code"
        }

        if (exit.exitValue == 0) {
            getLogger().info("Changes committed successfully.")
        } else {
            getLogger().error("Failed to commit changes. Process terminated with exit code ${exit.exitValue}")
            getLogger().error(out.toString())
        }
    }
}