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import qbs.File
import qbs.FileInfo
import qbs.ModUtils
import qbs.TextFile
import qbs.Utilities
import "../../modules/Android/ndk/utils.js" as NdkUtils
import 'gcc.js' as Gcc

LinuxGCC {
    Depends { name: "Android.ndk" }

    condition: qbs.targetOS.contains("android") && qbs.toolchain && qbs.toolchain.contains("llvm")
    priority: 2
    rpaths: [rpathOrigin]

    cxxLanguageVersion: "c++14"
    property string cxxStlBaseDir: FileInfo.joinPaths(Android.ndk.ndkDir, "sources", "cxx-stl")
    property string stlBaseDir: FileInfo.joinPaths(cxxStlBaseDir, "llvm-libc++")

    property string stlLibsDir: {
        if (stlBaseDir)
            return FileInfo.joinPaths(stlBaseDir, "libs", Android.ndk.abi);
        return undefined;
    }

    property string sharedStlFilePath: (stlLibsDir && Android.ndk.appStl.endsWith("_shared"))
        ? FileInfo.joinPaths(stlLibsDir, dynamicLibraryPrefix + Android.ndk.appStl + dynamicLibrarySuffix)
        : undefined
    property string staticStlFilePath: (stlLibsDir && Android.ndk.appStl.endsWith("_static"))
        ? FileInfo.joinPaths(stlLibsDir, NdkUtils.stlFilePath(staticLibraryPrefix, Android.ndk, staticLibrarySuffix))
        : undefined

    Group {
        name: "Android STL"
        condition: product.cpp.sharedStlFilePath && product.cpp.shouldLink
        files: product.cpp.sharedStlFilePath ? [product.cpp.sharedStlFilePath] : []
        fileTags: "android.stl"
    }

    Group {
        name: "gdbserver"
        condition: qbs.buildVariant !== "release" && product.cpp.shouldLink
        files: FileInfo.joinPaths(Android.ndk.ndkDir, "prebuilt",
                                  "android-" + NdkUtils.abiNameToDirName(Android.ndk.abi),
                                  "gdbserver", "gdbserver")
        fileTags: "android.gdbserver"
    }

    toolchainInstallPath: FileInfo.joinPaths(Android.ndk.ndkDir, "toolchains",
                                             "llvm", "prebuilt",
                                             Android.ndk.hostArch, "bin")

    property string toolchainTriple: [targetAbi === "androideabi" ? "arm" : targetArch,
                                      targetSystem, targetAbi].join("-")

    toolchainPrefix: undefined

    machineType: {
        if (Android.ndk.abi === "armeabi")
            return "armv5te";
        if (Android.ndk.abi === "armeabi-v7a")
            return "armv7-a";
    }

    qbs.optimization: targetAbi === "androideabi" ? "small" : base

    enableExceptions: Android.ndk.appStl !== "system"
    enableRtti: Android.ndk.appStl !== "system"

    commonCompilerFlags: NdkUtils.commonCompilerFlags(qbs.toolchain, qbs.buildVariant, Android.ndk)

    linkerFlags: NdkUtils.commonLinkerFlags(Android.ndk.abi);
    driverLinkerFlags: {
        var flags = ["-fuse-ld=lld", "-Wl,--exclude-libs,libgcc.a", "-Wl,--exclude-libs,libatomic.a"];
        if (Android.ndk.appStl.startsWith("c++") && Android.ndk.abi === "armeabi-v7a")
            flags = flags.concat(["-Wl,--exclude-libs,libunwind.a"]);
        return flags;
    }

    platformDriverFlags: ["-fdata-sections", "-ffunction-sections", "-funwind-tables",
                          "-fstack-protector-strong", "-no-canonical-prefixes"]

    libraryPaths: {
        var prefix = FileInfo.joinPaths(sysroot, "usr");
        var paths = [];
        if (Android.ndk.abi === "x86_64") // no lib64 for arm64-v8a
            paths.push(FileInfo.joinPaths(prefix, "lib64"));
        paths.push(FileInfo.joinPaths(prefix, "lib"));
        paths.push(stlLibsDir);
        return paths;
    }

    dynamicLibraries: {
        var libs = ["c", "m"];
        if (sharedStlFilePath)
            libs.push(FileInfo.joinPaths(stlLibsDir, NdkUtils.stlFilePath(dynamicLibraryPrefix, Android.ndk, dynamicLibrarySuffix)));
        return libs;
    }
    staticLibraries: staticStlFilePath
    systemIncludePaths: {
        var includes = [FileInfo.joinPaths(sysroot, "usr", "include", toolchainTriple)];
        if (Android.ndk.abi === "armeabi-v7a") {
            includes.push(FileInfo.joinPaths(Android.ndk.ndkDir, "sources", "android",
                                             "support", "include"));
        }
        includes.push(FileInfo.joinPaths(stlBaseDir, "include"));
        includes.push(FileInfo.joinPaths(stlBaseDir + "abi", "include"));
        return includes;
    }

    defines: {
        var list = ["ANDROID"];
        // Might be superseded by an -mandroid-version or similar Clang compiler flag in future
        list.push("__ANDROID_API__=" + Android.ndk.platformVersion);
        return list;
    }

    binutilsPath: FileInfo.joinPaths(Android.ndk.ndkDir, "toolchains", "llvm", "prebuilt",
                                     Android.ndk.hostArch, "bin");
    binutilsPathPrefix: "llvm-"
    syslibroot: FileInfo.joinPaths(Android.ndk.ndkDir, "platforms",
                                   Android.ndk.platform, "arch-"
                                   + NdkUtils.abiNameToDirName(Android.ndk.abi))
    sysroot: FileInfo.joinPaths(Android.ndk.ndkDir, "sysroot")

    targetArch: {
        switch (qbs.architecture) {
        case "arm64":
            return "aarch64";
        case "armv5":
        case "armv5te":
            return "armv5te";
        case "armv7a":
        case "x86_64":
            return qbs.architecture;
        case "x86":
            return "i686";
        }
    }

    targetVendor: "none"
    targetSystem: "linux"
    targetAbi: "android" + (["armeabi", "armeabi-v7a"].contains(Android.ndk.abi) ? "eabi" : "")

    endianness: "little"

    Rule {
        condition: shouldLink
        inputs: "dynamiclibrary"
        Artifact {
            filePath: FileInfo.joinPaths("stripped-libs", input.fileName)
            fileTags: "android.nativelibrary"
        }
        prepare: {
            var stripArgs = ["--strip-unneeded", "-o", output.filePath, input.filePath];
            var stripCmd = new Command(product.cpp.stripPath, stripArgs);
            stripCmd.description = "Stripping unneeded symbols from " + input.fileName;
            return stripCmd;
        }
    }

    _skipAllChecks: !shouldLink

    validate: {
        if (_skipAllChecks)
            return;
        var baseValidator = new ModUtils.PropertyValidator("qbs");
        baseValidator.addCustomValidator("architecture", targetArch, function (value) {
            return value !== undefined;
        }, "unknown Android architecture '" + qbs.architecture + "'.");

        var validator = new ModUtils.PropertyValidator("cpp");
        validator.setRequiredProperty("targetArch", targetArch);

        return baseValidator.validate() && validator.validate();
    }
}