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

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

    condition: qbs.targetOS.contains("android") &&
               qbs.toolchain && qbs.toolchain.contains("gcc")
    rpaths: ['$ORIGIN']

    property string toolchainDir: {
        if (qbs.toolchain && qbs.toolchain.contains("clang"))
            return "llvm-" + Android.ndk.toolchainVersionNumber;
        if (["x86", "x86_64"].contains(Android.ndk.abi))
            return Android.ndk.abi + "-" + Android.ndk.toolchainVersionNumber;
        return toolchainPrefix + Android.ndk.toolchainVersionNumber;
    }

    property string cxxStlBaseDir: FileInfo.joinPaths(Android.ndk.ndkDir, "sources", "cxx-stl")
    property string gabiBaseDir: FileInfo.joinPaths(cxxStlBaseDir, "gabi++")
    property string stlPortBaseDir: FileInfo.joinPaths(cxxStlBaseDir, "stlport")
    property string gnuStlBaseDir: FileInfo.joinPaths(cxxStlBaseDir, "gnu-libstdc++",
                                                      Android.ndk.toolchainVersionNumber)
    property string llvmStlBaseDir: FileInfo.joinPaths(cxxStlBaseDir, "llvm-libc++")
    property string stlBaseDir: {
        if (Android.ndk.appStl.startsWith("gabi++_"))
            return gabiBaseDir;
        else if (Android.ndk.appStl.startsWith("stlport_"))
            return stlPortBaseDir;
        else if (Android.ndk.appStl.startsWith("gnustl_"))
            return gnuStlBaseDir;
        else if (Android.ndk.appStl.startsWith("c++_"))
            return llvmStlBaseDir;
        return undefined;
    }

    property string stlLibsDir: {
        if (stlBaseDir) {
            var infix = Android.ndk.abi;
            if (Android.ndk.armMode === "thumb")
                infix = FileInfo.joinPaths(infix, "thumb");
            return FileInfo.joinPaths(stlBaseDir, "libs", infix);
        }
        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, staticLibraryPrefix + Android.ndk.appStl + staticLibrarySuffix)
        : undefined

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

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

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

    toolchainPrefix: {
        if (qbs.toolchain && qbs.toolchain.contains("clang"))
            return undefined;
        return toolchainTriple + "-";
    }

    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.buildVariant, Android.ndk.abi,
                                                      Android.ndk.armMode)

    linkerFlags: NdkUtils.commonLinkerFlags(Android.ndk.abi)

    platformDriverFlags: ["-no-canonical-prefixes"]

    libraryPaths: {
        var prefix = FileInfo.joinPaths(sysroot, "usr");
        var paths = [];
        if (Android.ndk.abi === "mips64" || Android.ndk.abi === "x86_64") // no lib64 for arm64-v8a
            paths.push(FileInfo.joinPaths(prefix, "lib64"));
        paths.push(FileInfo.joinPaths(prefix, "lib"));
        return paths;
    }

    dynamicLibraries: {
        var libs = ["c", "m"];
        if (sharedStlFilePath)
            libs.push(sharedStlFilePath);
        return libs;
    }
    staticLibraries: {
        var libs = ["gcc"];
        if (staticStlFilePath)
            libs.push(staticStlFilePath);
        return libs;
    }
    systemIncludePaths: {
        var includes = [];
        if (Android.ndk.useUnifiedHeaders) {
            // Might not be needed with Clang in a future NDK release
            includes.push(FileInfo.joinPaths(sysroot, "usr", "include", toolchainTriple));
        }
        if (Android.ndk.appStl === "system") {
            includes.push(FileInfo.joinPaths(cxxStlBaseDir, "system", "include"));
        } else if (Android.ndk.appStl.startsWith("gabi++")) {
            includes.push(FileInfo.joinPaths(gabiBaseDir, "include"));
        } else if (Android.ndk.appStl.startsWith("stlport")) {
            includes.push(FileInfo.joinPaths(stlPortBaseDir, "stlport"));
        } else if (Android.ndk.appStl.startsWith("gnustl")) {
            includes.push(FileInfo.joinPaths(gnuStlBaseDir, "include"));
            includes.push(FileInfo.joinPaths(gnuStlBaseDir, "libs", Android.ndk.abi, "include"));
            includes.push(FileInfo.joinPaths(gnuStlBaseDir, "include", "backward"));
        } else if (Android.ndk.appStl.startsWith("c++_")) {
            includes.push(FileInfo.joinPaths(llvmStlBaseDir, "libcxx", "include"));
            includes.push(FileInfo.joinPaths(llvmStlBaseDir + "abi", "libcxxabi", "include"));
        }
        return includes;
    }
    defines: {
        var list = ["ANDROID"];
        if (Android.ndk.useUnifiedHeaders) {
            // Might be superseded by an -mandroid-version or similar Clang compiler flag in future
            list.push("__ANDROID_API__=" + Android.ndk.platformVersion);
        }
        return list;
    }
    syslibroot: FileInfo.joinPaths(Android.ndk.ndkDir, "platforms",
                                   Android.ndk.platform, "arch-"
                                   + NdkUtils.abiNameToDirName(Android.ndk.abi))
    sysroot: !Android.ndk.useUnifiedHeaders
             ? syslibroot
             : 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";
        case "mips":
        case "mipsel":
            return "mipsel";
        case "mips64":
        case "mips64el":
            return "mips64el";
        }
    }

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

    endianness: "little"

    Rule {
        inputs: ["android.unstripped-stl"]
        Artifact {
            filePath: FileInfo.joinPaths("stripped-libs", input.fileName);
            fileTags: ["android.stripped-stl"]
        }
        prepare: {
            var args = ["--strip-unneeded", "-o", output.filePath, input.filePath];
            var cmd = new Command(product.cpp.stripPath, args);
            cmd.description = "stripping " + input.fileName;
            return [cmd];
        }
    }

    Rule {
        inputs: ["dynamiclibrary"]
        explicitlyDependsOn: ["android.stripped-stl"];
        outputFileTags: ["android.nativelibrary", "android.gdbserver-info", "android.stl-info"]
        outputArtifacts: {
            var artifacts = [{
                    filePath: FileInfo.joinPaths("stripped-libs",
                                                 inputs["dynamiclibrary"][0].fileName),
                    fileTags: ["android.nativelibrary"]
            }];
            if (product.moduleProperty("qbs", "buildVariant") === "debug") {
                artifacts.push({
                        filePath: "android.gdbserver-info.txt",
                        fileTags: ["android.gdbserver-info"]
                });
            }
            if (explicitlyDependsOn["android.stripped-stl"])
                artifacts.push({filePath: "android.stl-info.txt", fileTags: ["android.stl-info"]});
            return artifacts;
        }

        prepare: {
            var copyCmd = new JavaScriptCommand();
            copyCmd.silent = true;
            copyCmd.sourceCode = function() {
                File.copy(inputs["dynamiclibrary"][0].filePath,
                          outputs["android.nativelibrary"][0].filePath);
                var arch = product.moduleProperty("Android.ndk", "abi");
                var destDir = FileInfo.joinPaths("lib", arch);
                if (product.moduleProperty("qbs", "buildVariant") === "debug") {
                    arch = NdkUtils.abiNameToDirName(arch);
                    var srcPath = FileInfo.joinPaths(
                        product.moduleProperty("Android.ndk", "ndkDir"),
                                "prebuilt/android-" + arch, "gdbserver/gdbserver");
                    var targetPath = FileInfo.joinPaths(destDir,
                        product.moduleProperty("Android.ndk", "gdbserverFileName"));
                    var infoFile = new TextFile(outputs["android.gdbserver-info"][0].filePath,
                                                TextFile.WriteOnly);
                    infoFile.writeLine(srcPath);
                    infoFile.writeLine(targetPath);
                    infoFile.close();
                }
                var strippedStlList = explicitlyDependsOn["android.stripped-stl"];
                if (strippedStlList) {
                    var srcPath = strippedStlList[0].filePath;
                    var targetPath = FileInfo.joinPaths(destDir, FileInfo.fileName(srcPath));
                    var infoFile = new TextFile(outputs["android.stl-info"][0].filePath,
                                                TextFile.WriteOnly);
                    infoFile.writeLine(srcPath);
                    infoFile.writeLine(targetPath);
                    infoFile.close();
                }
            }
            var stripArgs = ["--strip-unneeded", outputs["android.nativelibrary"][0].filePath];
            var stripCmd = new Command(product.moduleProperty("cpp", "stripPath"), stripArgs);
            stripCmd.description = "Stripping unneeded symbols from "
                    + outputs["android.nativelibrary"][0].fileName;
            return [copyCmd, stripCmd];
        }
    }

    validate: {
        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();
    }
}
