import org.gradle.internal.jvm.Jvm


plugins {
    id 'cpp-library'
    id 'base'
}

description = 'Master Password Algorithm Implementation'

artifacts {
    'default' task( type: Zip, 'archive' ) {
        // TODO: exclude lib files that are produced by the build.
        from 'lib'

        components.withType( ComponentWithRuntimeFile ) {
            if (isOptimized()) {
                from runtimeFile, {
                    into standardOperatingSystem( targetPlatform ) + '/' + standardArchitecture( targetPlatform )
                }
            }
        }
    }
}

library {
    baseName.set( 'mpw' )
    linkage.set( [Linkage.SHARED] )

    // Reconfigure the toolchain from C++ to C.
    toolChains {
        withType( VisualCpp ) {
            eachPlatform {
                cppCompiler.withArguments { addAll( ['/TC', '/MT', '/Ox', '/DMPW_SODIUM=1', '/DSODIUM_STATIC', '/DSODIUM_EXPORT='] ) }
            }
        }
        withType( GccCompatibleToolChain ) {
            eachPlatform {
                cppCompiler.withArguments { addAll( ['-x', 'c', '-O3', '-std=c11', '-Werror', '-DMPW_SODIUM=1'] ) }
            }
        }
    }

    // Cross-compile for these host platforms.
    // TODO: Cross-compiling, blocked by: https://github.com/gradle/gradle-native/issues/169 - CppLibraryPlugin.java:163
    operatingSystems.set( [objects.named( OperatingSystemFamily, OperatingSystemFamily.LINUX ),
                           objects.named( OperatingSystemFamily, OperatingSystemFamily.MAC_OS ),
                           objects.named( OperatingSystemFamily, OperatingSystemFamily.WINDOWS )] )

    components.withType( CppComponent ) {
        cppSource.from fileTree( 'src' )

        privateHeaders {
            // JDK for JNI support.
            from files( new File( Jvm.current().javaHome, 'include' ) ) { first().eachDir { from it } }
        }

        binaries.configureEach {
            def system = standardOperatingSystem( targetPlatform )

            project.dependencies {
                add( linkLibraries.name,
                     fileTree( "../../../lib/libsodium/build-${system}~/out/lib" ) )
            }

            archive.dependsOn project.tasks.maybeCreate( "build_libsodium-${system}", Exec.class ).configure {
                commandLine 'bash', '-x', "$rootDir/../lib/bin/build_libsodium-${system}"
                privateHeaders.from "$rootDir/../lib/libsodium/src/libsodium/include"
            }
            archive.dependsOn project.tasks.maybeCreate( "build_libjson-c-${system}", Exec.class ).configure {
                commandLine 'bash', '-x', "$rootDir/../lib/bin/build_libjson-c-${system}"
                privateHeaders.from "$rootDir/../lib/libjson-c/build-${system}~/out"
            }
        }
    }
}

static String standardOperatingSystem(NativePlatform platform) {
    OperatingSystem os = platform.getOperatingSystem()
    if (os.isWindows())
        return OperatingSystemFamily.WINDOWS

    else if (os.isMacOsX())
        return OperatingSystemFamily.MAC_OS

    else if (os.isLinux())
        return OperatingSystemFamily.LINUX

    // Other systems will need to use a Linux compatibility layer for now.
    return OperatingSystemFamily.LINUX
}

static String standardArchitecture(NativePlatform platform) {
    Architecture arch = platform.getArchitecture()
    if (arch.isArm())
        return 'arm'

    else if (arch.name.toLowerCase( Locale.ROOT ).startsWith( 'arm' ))
        return 'arm64'

    else if (arch.isAmd64())
        return 'x86_64'

    else if (arch.isI386())
        return 'x86'

    // Other systems will need to be compatible with the x86 architecture.
    return 'x86'
}