buildscript {
    repositories {
        google() // For Gradle 4.0+
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:8.2.1'
    }
}

apply plugin: 'com.android.application'

// Steam Frame build (./gradlew assembleFrame, see docs/STEAM_FRAME_VR.md).
// The Frame's Android container has no OpenXR loader broker, so the Khronos
// loader goes into the APK. It comes from Maven Central, gets checked against
// this hash and is unpacked into build/ (never committed). Quest builds don't
// touch any of this.
def khronosLoaderVersion = '1.1.63'
def khronosLoaderSha256 = '622419d2f6741c3443a3beb4779af0764318edd01830de967f24c741ebcded73'
def khronosLoaderDir = file("build/openxr-loader/${khronosLoaderVersion}")
def khronosLoaderSo = new File(khronosLoaderDir, 'libopenxr_loader.so')

def fetchKhronosLoader = tasks.register('fetchKhronosLoader') {
    outputs.file khronosLoaderSo
    doLast {
        def url = "https://repo1.maven.org/maven2/org/khronos/openxr/openxr_loader_for_android/${khronosLoaderVersion}/openxr_loader_for_android-${khronosLoaderVersion}.aar"
        def aar = new File(khronosLoaderDir, 'openxr_loader_for_android.aar')
        khronosLoaderDir.mkdirs()
        new URL(url).withInputStream { input -> aar.withOutputStream { it << input } }
        def digest = java.security.MessageDigest.getInstance('SHA-256')
        aar.eachByte(8192) { buf, len -> digest.update(buf, 0, len) }
        def sha = digest.digest().collect { String.format('%02x', it) }.join()
        if (sha != khronosLoaderSha256) {
            aar.delete()
            throw new GradleException("OpenXR loader AAR has the wrong SHA-256 (${sha}), expected ${khronosLoaderSha256}")
        }
        def zip = new java.util.zip.ZipFile(aar)
        try {
            def entry = zip.getEntry('jni/arm64-v8a/libopenxr_loader.so')
            if (entry == null) throw new GradleException('libopenxr_loader.so (arm64-v8a) is not in the loader AAR')
            zip.getInputStream(entry).withStream { input -> khronosLoaderSo.withOutputStream { it << input } }
        } finally {
            zip.close()
        }
        aar.delete()
    }
}

// Steam Frame build: the menu background tile with the Frame's button mapping on it. The release
// tile (800_1_a_loading.tga, Team Beef's art, git-ignored) has the Quest's help baked in, so
// tools/steam_frame/make_frame_tile.py makes a Frame one into build/frame-assets, and the frame build
// type's assets override the release one with it. Nothing generated is committed, and Quest and Pico
// builds don't see this. If the release tile or Python with Pillow and numpy is missing, the Frame
// APK still builds with the release tile, and this says so.
// Python is -PframePython, $FRAME_PYTHON, tools/steam_frame/.venv, or python3, in that order.
def frameAssetsDir = file('build/frame-assets')
def makeFrameTile = tasks.register('makeFrameTile') {
    doLast {
        delete frameAssetsDir      // never ship a stale tile after the source went away
        def venvPython = file('../../tools/steam_frame/.venv/bin/python')
        def python = project.findProperty('framePython') ?: System.getenv('FRAME_PYTHON') ?:
                (venvPython.exists() ? venvPython.absolutePath : 'python3')
        def status = -1
        try {
            status = exec {
                commandLine python, file('../../tools/steam_frame/make_frame_tile.py').absolutePath,
                        '--src', file('../../assets/background/800_1_a_loading.tga').absolutePath,
                        '--out', new File(frameAssetsDir, 'background/800_1_a_loading.tga').absolutePath
                ignoreExitValue = true
            }.exitValue
        } catch (Exception e) {
            logger.warn("Could not run ${python}: ${e.message}")
        }
        if (status != 0) {
            logger.warn('WARNING: no Frame menu tile, the Frame APK gets the release one (with the Quest button help). ' +
                    'See "Build" in docs/STEAM_FRAME_VR.md.')
        }
    }
}

android {

    namespace = "com.drbeef.lambda1vr"

    // This is the name of the generated apk file, which will have
    // -debug.apk or -release.apk appended to it.
    // The filename doesn't effect the Android installation process.
    // Use only letters to remain compatible with the package name.
    project.archivesBaseName = "lambda1vr"

    defaultConfig {
        // Gradle replaces the manifest package with this value, which must
        // be unique on a system.  If you don't change it, a new app
        // will replace an older one.
        applicationId "com.drbeef." + project.archivesBaseName

        externalNativeBuild {
            ndk {
                abiFilters 'arm64-v8a'
            }
            ndkBuild {
                def numProcs = Runtime.runtime.availableProcessors()
                arguments "V=0", "-j$numProcs", "-C$project.buildDir.parent", "APP_PLATFORM=android-32", "NDK_TOOLCHAIN_VERSION=clang", "APP_STL=c++_static"
                abiFilters 'arm64-v8a'
            }
        }

        minSdkVersion 32
        targetSdkVersion 32

        // True only in the frame build type
        buildConfigField 'boolean', 'STEAM_FRAME', 'false'
    }

    buildFeatures {
        buildConfig true
    }

    externalNativeBuild {
        ndkBuild {
            path file('jni/Android.mk')
        }
    }

    signingConfigs {
        def keystorePath = (project.hasProperty('key.store')) ?
                new File(project.getProperty('key.store')) :
                project.file('android.debug.keystore')

        def keystorePassword = (project.hasProperty('key.store.password')) ?
                project.getProperty('key.store.password') : 'android'

        def keystoreKeyAlias = (project.hasProperty('key.alias')) ?
                project.getProperty('key.alias') : 'androiddebugkey'

        def keystoreKeyPassword = (project.hasProperty('key.alias.password')) ?
                project.getProperty('key.alias.password') : 'android'

        debug {
            storeFile keystorePath
            storePassword keystorePassword
            keyAlias keystoreKeyAlias
            keyPassword keystoreKeyPassword
            v2SigningEnabled true
        }

        release {
            storeFile keystorePath
            storePassword keystorePassword
            keyAlias keystoreKeyAlias
            keyPassword keystoreKeyPassword
            v2SigningEnabled true
        }
    }

    buildTypes {
        debug {
            signingConfig signingConfigs.debug
            debuggable true
            jniDebuggable true

            externalNativeBuild {
                ndkBuild {
                    arguments "NDK_DEBUG=1","USE_ASAN=1"
                }
            }
        }

        release {
            signingConfig signingConfigs.release
            debuggable false
            jniDebuggable false

            externalNativeBuild {
                ndkBuild {
                    arguments "NDK_DEBUG=0","USE_ASAN=0"
                }
            }
        }

        // Valve Steam Frame (Lepton, Android 11). Same as release, plus a
        // manifest overlay (src/frame) and L1VR_STEAM_FRAME for the native code.
        // Signed with the debug key, it's only sideloaded.
        frame {
            initWith release
            matchingFallbacks = ['release']
            applicationIdSuffix ".frame"
            versionNameSuffix "-frame"
            signingConfig signingConfigs.debug
            buildConfigField 'boolean', 'STEAM_FRAME', 'true'

            externalNativeBuild {
                ndkBuild {
                    arguments "L1VR_STEAM_FRAME=1", "APP_PLATFORM=android-30"
                }
            }
        }
    }

    sourceSets.frame {
        // generated by makeFrameTile, wins over the release tile in main
        assets.srcDir frameAssetsDir
    }

    sourceSets.main {
        manifest.srcFile 'AndroidManifest.xml'
        java.srcDirs = ['../../java']
        jniLibs.srcDir 'libs'
        res.srcDirs = ['../../res']
        assets.srcDirs = ['../../assets']
        jni.srcDirs = ['jni']
    }

    lintOptions {
        checkReleaseBuilds false
        disable 'ExpiredTargetSdkVersion'
    }

    //packagingOptions {
    //    exclude 'lib/arm64-v8a/libopenxr_loader.so'
    //}

    compileOptions {
        sourceCompatibility = '1.8'
        targetCompatibility = '1.8'
    }
    compileSdkVersion = 32
    buildToolsVersion = '29.0.3'

    ndkVersion '25.1.8937393'
}

// Lepton runs Android 11, the Quest build needs 12L (API 32)
androidComponents {
    beforeVariants(selector().withBuildType('frame')) { variantBuilder ->
        variantBuilder.minSdk = 30
    }
}

// The loader has to be there before ndk-build links against it
tasks.configureEach { task ->
    if (task.name in ['preBuild', 'preDebugBuild', 'preReleaseBuild', 'preFrameBuild']) {
        task.dependsOn fetchKhronosLoader
    }
    if (task.name == 'mergeFrameAssets') {
        task.dependsOn makeFrameTile
    }
}

dependencies {
    implementation "com.android.support:support-compat:28.0.0"
    implementation "com.android.support:support-core-utils:28.0.0"
    implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
}

repositories {
    google()
}

// Workaround to fix issue in Android Studio Chipmunk 2021.2.1 and later
// where opening a project would result in a 'prepareKotlinBuildScriptModel'
// not found error
if (!tasks.findByName("prepareKotlinBuildScriptModel")) {
    tasks.register("prepareKotlinBuildScriptModel") {}
}