/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import android.support.LibraryVersions
import org.gradle.internal.os.OperatingSystem

def root = ext.supportRootFolder
ext.inAppToolkitProject = rootProject.name == "app-toolkit"

if (ext.inAppToolkitProject) {
    apply from: "${ext.supportRootFolder}/buildSrc/init.gradle"
    init.setSdkInLocalPropertiesFile()
}

def checkoutRoot = "${root}/../.."
ext.checkoutRoot = checkoutRoot
ext.prebuiltsRoot = "$checkoutRoot/prebuilts"
ext.prebuiltsRootUri = "file://${prebuiltsRoot}"

final String platform = OperatingSystem.current().isMacOsX() ? 'darwin' : 'linux'
final String fullSdkPath = new File("${checkoutRoot}/prebuilts/fullsdk-${platform}").getCanonicalPath()
System.setProperty('android.home', fullSdkPath)
File props = file("local.properties")
props.write "sdk.dir=${fullSdkPath}"

def buildDir
def distDir
def supportLibBuildDir

if (ext.runningInBuildServer) {
    supportLibBuildDir = new File(System.env.OUT_DIR + '/gradle/frameworks/support/build').getCanonicalFile();
    buildDir = new File(System.env.OUT_DIR + '/gradle/frameworks/app-toolkit/build').getCanonicalFile()
    distDir = new File(System.env.DIST_DIR).getCanonicalFile()
} else {
    supportLibBuildDir = file("${checkoutRoot}/out/host/gradle/frameworks/support/build")
    buildDir = file("${checkoutRoot}/out/host/gradle/frameworks/app-toolkit/build")
    distDir = file("${checkoutRoot}/out/dist")
}

def localMavenRepo = "file://${new File(buildDir, "flatfoot_repo").absolutePath}"
ext.testApkDistOut = distDir
ext.testResultsDistDir = new File(distDir, "host-test-reports")
ext.localMavenRepo = localMavenRepo
file(localMavenRepo).delete()
file(localMavenRepo).mkdirs()

ext.repoNames += ["file://${new File(supportLibBuildDir, "support_repo").absolutePath}"]

apply from: "${ext.supportRootFolder}/app-toolkit/dependencies.gradle"

// repository creation task
def buildServerAnchorTask = rootProject.tasks.create(name : "runBuildServerCompilationTasks",
    description: "Anchor task for everything we want to run in build server.")

if (ext.inAppToolkitProject) {
    // always build offline docs for flatfoot specific builds.
    ext.docs.dac = [
            libraryroot: "android/arch",
            dataname: "ARCH_DATA"
    ]
    repos.addMavenRepositories(repositories)
    init.setupRepoOutAndBuildNumber()
    init.configureSubProjects()
    init.setupRelease()
    init.enableDoclavaAndJDiff(this)
    rootProject.tasks["generateDocs"].exclude '**/R.java'
}


// flatfoot docs
def zipFlatfootDocsTask = rootProject.tasks.create(name : "createFlatfootDocsArchive", type : Zip) {
    from rootProject.docsDir
    destinationDir distDir
    baseName = "flatfoot-docs"
}

buildServerAnchorTask.dependsOn zipFlatfootDocsTask
zipFlatfootDocsTask.dependsOn rootProject.tasks["generateDocs"]
buildServerAnchorTask.dependsOn createDiffArchive
buildServerAnchorTask.dependsOn createArchive

rootProject.ext.flatfootProjectGroups = [
        "room" : "android.arch.persistence.room",
        "persistence" : "android.arch.persistence",
        "lifecycle" : "android.arch.lifecycle",
        "arch" : "android.arch.core",
        "paging" : "android.arch.paging",
        "navigation" : "android.arch.navigation"]

subprojects {
    repos.addMavenRepositories(project.repositories)
    if (project.name == 'doclava' || project.name == 'jdiff') {
        project.tasks.whenTaskAdded { task ->
            if (task instanceof org.gradle.api.tasks.testing.Test) {
                task.enabled = false
            }
        }
        return
    }

    def projectPath = project.getPath().split(":")
    def mavenGroup = projectPath[1]
    def finalGroup = rootProject.flatfootProjectGroups[mavenGroup]

    if (finalGroup == null) {
        return
    }
    if (projectPath.size() == 2) {// root project.
        return
    }
    project.group = finalGroup

    if (project.getPath().contains("integration-tests")) {
        // disable upload tasks
        project.tasks.whenTaskAdded { task ->
            if (task instanceof Upload || task.name == "generateSourceProps") {
                task.enabled = false
            }
        }
    } else {
        def checkApi = project.tasks.create("checkVersion") {
            doFirst {
                if (project.version == null
                        || project.version == LibraryVersions.SUPPORT_LIBRARY.toString()) {
                    throw new GradleException("bad version for $project with $project.version")
                }
            }
        }

        project.tasks.whenTaskAdded { task ->
            if (task instanceof Upload) {
                task.dependsOn checkApi
            }
        }
    }

    project.plugins.whenPluginAdded { plugin ->
        def isAndroidLibrary = "com.android.build.gradle.LibraryPlugin"
                .equals(plugin.class.name)
        def isJavaLibrary = "org.gradle.api.plugins.JavaPlugin".equals(plugin.class.name)
        if (isAndroidLibrary) {
            // it is an android lib, enable sources.
            def sourcesTask = project.tasks.create(name: "sourcesJar", type : Jar) {
                classifier = 'sources'
                from android.sourceSets.main.getJava().getSrcDirs()
            }
            project.artifacts {
                archives sourcesTask
            }
            project.android.defaultConfig {
                // Update the version meta-data in each Manifest.
                addManifestPlaceholders(["version" : project.version])
            }
        } else if(isJavaLibrary && project.name == "common") {
            // it is a shared lib, enable sources.
            def sourcesTask = project.tasks.create(name: "sourcesJar", type : Jar) {
                classifier = 'sources'
                from sourceSets.main.allSource
            }
            project.artifacts {
                archives sourcesTask
            }
        }
    }

    project.tasks.whenTaskAdded { task ->
        if (task.name.startsWith("assembleAndroidTest")) {
            buildServerAnchorTask.dependsOn task
        }
        if (task.name.startsWith("assembleDebug")) {
            buildServerAnchorTask.dependsOn task
        }
    }
}

def createKotlinCheckstyle(Project project) {
    def fs = files();
    if (project.sourceSets.hasProperty('main')) {
        fs += files(project.sourceSets.main.allJava.srcDirs.collect { fileTree(it) })
    }
    if (project.sourceSets.hasProperty('test')) {
        fs += files(project.sourceSets.test.allJava.srcDirs.collect { fileTree(it) })
    }
    if (project.hasProperty('android')) {
        fs += files(project.android.sourceSets.main.java.getSrcDirs().collect {fileTree(it)})
        fs += files(project.android.sourceSets.test.java.getSrcDirs().collect {fileTree(it)})
        fs += files(project.android.sourceSets.androidTest.java.getSrcDirs().collect {fileTree(it)})
    }
    fs = fs.filter{file -> file.name.endsWith(".kt")}
    def kotlinCheckstyle = createCheckstyleTask(project, 'checkstyleKotlin',
            "${project.rootProject.ext.supportRootFolder}/app-toolkit/kotlin-checkstyle.xml",
            fs.files)

    project.tasks.findByName("check").dependsOn(kotlinCheckstyle)
    // poor man's line length check
    def lineCheck = project.tasks.create(name : "lineLengthCheck") {
        fs.each { sourceDir ->
                  fileTree(dir : sourceDir, include : "**/*.kt").each{ file ->
                      file.readLines().eachWithIndex { line, index ->
                          if (line.size() > 100) {
                              project.logger.error("line too long: file: $file" +
                                      " index:$index line: $line")
                          }
                      }
                  }
        }
    }
    kotlinCheckstyle.dependsOn(lineCheck)
}

def createAndroidCheckstyle(Project project) {
    def fs = files()
    if (project.hasProperty('android')) {
        fs += files(project.android.sourceSets.main.java.getSrcDirs().collect {fileTree(it)})
    }
    if (project.sourceSets.hasProperty('main')) {
        fs += files(project.sourceSets.main.allJava)
    }
    fs = fs.filter{file -> file.name.endsWith(".java")}

    def checkStyle = createCheckstyleTask(project, 'checkstyleAndroid',
            "${project.rootProject.ext.checkoutRoot}/prebuilts/checkstyle/android-style.xml",
            fs.files)
    project.tasks.findByName("check").dependsOn(checkStyle)
}

def createCheckstyleTask(project, taskName, configFile, inputFiles) {
    def arguments = ['-c', configFile]
    arguments.addAll(inputFiles)
    def checkStyle = project.tasks.create(name : taskName, type: JavaExec) {
        inputs.files(inputFiles).skipWhenEmpty()
        main = "com.puppycrawl.tools.checkstyle.Main"
        args = arguments
        classpath = files(file("${project.rootProject.ext.checkoutRoot}/prebuilts/checkstyle/checkstyle.jar").path)
    }
    return checkStyle;
}

ext.createKotlinCheckstyle = this.&createKotlinCheckstyle
ext.createAndroidCheckstyle = this.&createAndroidCheckstyle