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import qbs
import qbs.File
import qbs.FileInfo
import qbs.ModUtils
import qbs.Probes
import qbs.TextFile

import "utils.js" as NdkUtils

Module {
    Depends { name: "cpp" }

    Probes.AndroidNdkProbe {
        id: ndkProbe
        environmentPaths: [ndkDir].concat(base)
    }

    readonly property string abi: NdkUtils.androidAbi(qbs.architecture)
    PropertyOptions {
        name: "abi"
        description: "Corresponds to the 'APP_ABI' variable in an Android.mk file."
        allowedValues: ["arm64-v8a", "armeabi", "armeabi-v7a", "mips", "mips64", "x86", "x86_64"]
    }

    property string appStl: "system"
    PropertyOptions {
        name: "stlType"
        description: "Corresponds to the 'APP_STL' variable in an Android.mk file."
        allowedValues: [
            "system", "gabi++_static", "gabi++_shared", "stlport_static", "stlport_shared",
            "gnustl_static", "gnustl_shared", "c++_static", "c++_shared"
        ]
    }

    property string toolchainVersion: latestToolchainVersion
    PropertyOptions {
        name: "toolchainVersion"
        description: "Corresponds to the 'NDK_TOOLCHAIN_VERSION' variable in an Android.mk file."
    }

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

    property bool hardFloat
    property string ndkDir: ndkProbe.path
    property string platform: "android-9"

    // Internal properties.
    property stringList availableToolchains: File.directoryEntries(
                                                 FileInfo.joinPaths(ndkDir, "toolchains"),
                                                 File.Dirs | File.NoDotAndDotDot)

    property stringList availableToolchainVersions: {
        var prefix = ["x86", "x86_64"].contains(abi) ? (abi + "-") : cpp.toolchainPrefix;
        if (qbs.toolchain.contains("clang"))
            prefix = "llvm-";

        var tcs = availableToolchains;
        var versions = [];
        for (var i = 0; i < tcs.length; ++i) {
            if (tcs[i].startsWith(prefix)) {
                var v = tcs[i].substr(prefix.length);
                var re = /^([0-9]+)\.([0-9]+)$/;
                if (v.match(re))
                    versions.push(v);
            }
        }

        // Sort by version number
        versions.sort(function (a, b) {
            var re = /^([0-9]+)\.([0-9]+)$/;
            a = a.match(re);
            a = {major: a[1], minor: a[2]};
            b = b.match(re);
            b = {major: b[1], minor: b[2]};
            if (a.major === b.major)
                return a.minor - b.minor;
            return a.major - b.major;
        });

        return versions;
    }

    property string latestToolchainVersion: availableToolchainVersions
                                            [availableToolchainVersions.length - 1]

    property int platformVersion: {
        if (platform) {
            var match = platform.match(/^android-([0-9]+)$/);
            if (match !== null) {
                return parseInt(match[1], 10);
            }
        }
    }

    property stringList abis: {
        var list = ["armeabi", "armeabi-v7a"];
        if (platformVersion >= 9)
            list.push("mips", "x86");
        if (platformVersion >= 21)
            list.push("arm64-v8a", "mips64", "x86_64");
        return list;
    }

    property string toolchainVersionNumber: {
        var prefix = "clang";
        if (toolchainVersion && toolchainVersion.startsWith(prefix))
            return toolchainVersion.substr(prefix.length);
        return toolchainVersion;
    }

    property stringList defines: ["ANDROID"]
    property string buildProfile: (abi === "armeabi-v7a" && hardFloat) ? (abi + "-hard") : abi
    property string cxxStlBaseDir: FileInfo.joinPaths(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++",
                                                      toolchainVersionNumber)
    property string llvmStlBaseDir: FileInfo.joinPaths(cxxStlBaseDir, "llvm-libc++")
    property string stlBaseDir: {
        if (appStl.startsWith("gabi++_"))
            return gabiBaseDir;
        else if (appStl.startsWith("stlport_"))
            return stlPortBaseDir;
        else if (appStl.startsWith("gnustl_"))
            return gnuStlBaseDir;
        else if (appStl.startsWith("c++_"))
            return llvmStlBaseDir;
        return undefined;
    }
    property string stlLibsDir: {
        if (stlBaseDir) {
            var infix = buildProfile;
            if (armMode === "thumb")
                infix = FileInfo.joinPaths(infix, "thumb");
            return FileInfo.joinPaths(stlBaseDir, "libs", infix);
        }
        return undefined;
    }

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

    property string gdbserverFileName: "gdbserver"

    property string armMode: abi.startsWith("armeabi")
            ? (qbs.buildVariant === "debug" ? "arm" : "thumb")
            : undefined;
    PropertyOptions {
        name: "armModeType"
        description: "Determines the instruction set for armeabi configurations."
        allowedValues: ["arm", "thumb"]
    }

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

    cpp.toolchainPrefix: {
        if (qbs.toolchain && qbs.toolchain.contains("clang"))
            return undefined;
        return [cpp.targetAbi === "androideabi" ? "arm" : cpp.targetArch,
                                                  cpp.targetSystem, cpp.targetAbi].join("-") + "-";
    }

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

    cpp.enableExceptions: appStl !== "system"
    cpp.enableRtti: appStl !== "system"

    cpp.commonCompilerFlags: NdkUtils.commonCompilerFlags(qbs.buildVariant, abi, hardFloat, armMode)

    cpp.linkerFlags: NdkUtils.commonLinkerFlags(abi, hardFloat)

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

    cpp.dynamicLibraries: {
        var libs = ["c"];
        if (!hardFloat)
            libs.push("m");
        if (sharedStlFilePath)
            libs.push(sharedStlFilePath);
        return libs;
    }
    cpp.staticLibraries: {
        var libs = ["gcc"];
        if (hardFloat)
            libs.push("m_hard");
        if (staticStlFilePath)
            libs.push(staticStlFilePath);
        return libs;
    }
    cpp.systemIncludePaths: {
        var includes = [];
        if (appStl === "system") {
            includes.push(FileInfo.joinPaths(cxxStlBaseDir, "system", "include"));
        } else if (appStl.startsWith("gabi++")) {
            includes.push(FileInfo.joinPaths(gabiBaseDir, "include"));
        } else if (appStl.startsWith("stlport")) {
            includes.push(FileInfo.joinPaths(stlPortBaseDir, "stlport"));
        } else if (appStl.startsWith("gnustl")) {
            includes.push(FileInfo.joinPaths(gnuStlBaseDir, "include"));
            includes.push(FileInfo.joinPaths(gnuStlBaseDir, "libs", buildProfile, "include"));
            includes.push(FileInfo.joinPaths(gnuStlBaseDir, "include", "backward"));
        } else if (appStl.startsWith("c++_")) {
            includes.push(FileInfo.joinPaths(llvmStlBaseDir, "libcxx", "include"));
            includes.push(FileInfo.joinPaths(llvmStlBaseDir + "abi", "libcxxabi", "include"));
        }
        return includes;
    }
    cpp.defines: {
        var list = defines;
        if (hardFloat)
            list.push("_NDK_MATH_NO_SOFTFP=1");
        return list;
    }
    cpp.sysroot: FileInfo.joinPaths(ndkDir, "platforms", platform,
                                    "arch-" + NdkUtils.abiNameToDirName(abi))

    cpp.targetArch: {
        if (qbs.architecture === "arm64")
            return "aarch64";
        if (qbs.architecture === "armv5")
            return qbs.architecture + "te";
        if (qbs.architecture === "x86")
            return "i686";
        return qbs.architecture;
    }

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

    Rule {
        inputs: ["dynamiclibrary"]
        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"]
                });
            }
            var stlFilePath = ModUtils.moduleProperty(product, "sharedStlFilePath");
            if (stlFilePath)
                artifacts.push({filePath: "android.stl-info.txt", fileTags: ["android.stl-info"]});
            return artifacts;
        }

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