# Copyright (c) 2021 Project CHIP Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import os
import shlex
from enum import Enum, auto

from .builder import Builder


class AndroidBoard(Enum):
    ARM = auto()
    ARM64 = auto()
    X64 = auto()
    X86 = auto()
    AndroidStudio_ARM = auto()
    AndroidStudio_ARM64 = auto()
    AndroidStudio_X64 = auto()
    AndroidStudio_X86 = auto()

    def TargetCpuName(self):
        if self == AndroidBoard.ARM or self == AndroidBoard.AndroidStudio_ARM:
            return "arm"
        elif self == AndroidBoard.ARM64 or self == AndroidBoard.AndroidStudio_ARM64:
            return "arm64"
        elif self == AndroidBoard.X64 or self == AndroidBoard.AndroidStudio_X64:
            return "x64"
        elif self == AndroidBoard.X86 or self == AndroidBoard.AndroidStudio_X86:
            return "x86"
        else:
            raise Exception("Unknown board type: %r" % self)

    def AbiName(self):
        if self.TargetCpuName() == "arm":
            return "armeabi-v7a"
        elif self.TargetCpuName() == "arm64":
            return "arm64-v8a"
        elif self.TargetCpuName() == "x64":
            return "x86_64"
        elif self.TargetCpuName() == "x86":
            return "x86"
        else:
            raise Exception("Unknown board type: %r" % self)

    def IsIde(self):
        if (
            self == AndroidBoard.AndroidStudio_ARM
            or self == AndroidBoard.AndroidStudio_ARM64
            or self == AndroidBoard.AndroidStudio_X64
            or self == AndroidBoard.AndroidStudio_X86
        ):
            return True
        else:
            return False


class AndroidApp(Enum):
    CHIP_TOOL = auto()
    CHIP_TEST = auto()
    TV_SERVER = auto()
    TV_CASTING_APP = auto()
    JAVA_MATTER_CONTROLLER = auto()

    def AppName(self):
        if self == AndroidApp.CHIP_TOOL:
            return "CHIPTool"
        elif self == AndroidApp.CHIP_TEST:
            return "CHIPTest"
        elif self == AndroidApp.TV_SERVER:
            return "tv-server"
        elif self == AndroidApp.TV_CASTING_APP:
            return "tv-casting"
        else:
            raise Exception("Unknown app type: %r" % self)

    def AppGnArgs(self):
        gn_args = {}

        if self == AndroidApp.TV_SERVER:
            gn_args["chip_config_network_layer_ble"] = False
        elif self == AndroidApp.TV_CASTING_APP:
            gn_args["chip_config_network_layer_ble"] = False
        return gn_args

    def ExampleName(self):
        if self == AndroidApp.TV_SERVER:
            return "tv-app"
        elif self == AndroidApp.TV_CASTING_APP:
            return "tv-casting-app"
        else:
            return None

    def Modules(self):
        if self == AndroidApp.TV_SERVER:
            return ["platform-app", "content-app"]
        else:
            return None


class AndroidProfile(Enum):
    RELEASE = auto()
    DEBUG = auto()

    @property
    def ProfileName(self):
        if self == AndroidProfile.RELEASE:
            return 'release'
        elif self == AndroidProfile.DEBUG:
            return 'debug'
        else:
            raise Exception('Unknown profile type: %r' % self)


class AndroidBuilder(Builder):
    def __init__(self,
                 root,
                 runner,
                 board: AndroidBoard,
                 app: AndroidApp,
                 profile: AndroidProfile = AndroidProfile.DEBUG):
        super(AndroidBuilder, self).__init__(root, runner)
        self.board = board
        self.app = app
        self.profile = profile

    def validate_build_environment(self):
        for k in ["ANDROID_NDK_HOME", "ANDROID_HOME"]:
            if k not in os.environ:
                raise Exception(
                    "Environment %s missing, cannot build android libraries" % k
                )

        # SDK manager must be runnable to 'accept licenses'
        sdk_manager = os.path.join(
            os.environ["ANDROID_HOME"], "tools", "bin", "sdkmanager"
        )

        # New SDK manager at cmdline-tools/latest/bin/
        new_sdk_manager = os.path.join(
            os.environ["ANDROID_HOME"], "cmdline-tools", "latest", "bin", "sdkmanager"
        )
        if not (
            os.path.isfile(sdk_manager) and os.access(sdk_manager, os.X_OK)
        ) and not (
            os.path.isfile(new_sdk_manager) and os.access(
                new_sdk_manager, os.X_OK)
        ):
            raise Exception(
                "'%s' and '%s' is not executable by the current user"
                % (sdk_manager, new_sdk_manager)
            )

        # In order to accept a license, the licenses folder is updated with the hash of the
        # accepted license
        android_home = os.environ["ANDROID_HOME"]
        licenses = os.path.join(android_home, "licenses")
        if not os.path.exists(licenses):
            # Initial install may not have licenses at all
            if not os.access(android_home, os.W_OK):
                raise Exception(
                    "'%s' is NOT writable by the current user (needed to create licenses folder for accept)"
                    % android_home
                )

        elif not os.access(licenses, os.W_OK):
            raise Exception(
                "'%s' is NOT writable by the current user (needed to accept licenses)"
                % licenses
            )

    def copyToSrcAndroid(self):
        # JNILibs will be copied as long as they reside in src/main/jniLibs/ABI:
        #    https://developer.android.com/studio/projects/gradle-external-native-builds#jniLibs
        # to avoid redefined in IDE mode, copy to another place and add that path in build.gradle

        # We do NOT use python builtins for copy, so that the 'execution commands' are available
        # when using dry run.
        jnilibs_dir = os.path.join(
            self.root,
            "examples/android/",
            self.app.AppName(),
            "app/libs/jniLibs",
            self.board.AbiName(),
        )
        libs_dir = os.path.join(
            self.root, "examples/android/", self.app.AppName(), "app/libs"
        )
        self._Execute(
            ["mkdir", "-p", jnilibs_dir], title="Prepare Native libs " + self.identifier
        )

        # TODO: Runtime dependencies should be computed by the build system rather than hardcoded
        # GN supports getting these dependencies like:
        #   gn desc out/android-x64-chip_tool/ //src/controller/java runtime_deps
        #   gn desc out/android-x64-chip_tool/ //src/setup_payload/java runtime_deps
        # However  this assumes that the output folder has been populated, which will not be
        # the case for `dry-run` executions. Hence this harcoding here.
        #
        #   If we unify the JNI libraries, libc++_shared.so may not be needed anymore, which could
        # be another path of resolving this inconsistency.
        for libName in [
            "libCHIPController.so",
            "libc++_shared.so",
        ]:
            self._Execute(
                [
                    "cp",
                    os.path.join(
                        self.output_dir, "lib", "jni", self.board.AbiName(), libName
                    ),
                    os.path.join(jnilibs_dir, libName),
                ]
            )

        jars = {
            "CHIPController.jar": "src/controller/java/CHIPController.jar",
            "OnboardingPayload.jar": "src/controller/java/OnboardingPayload.jar",
            "AndroidPlatform.jar": "src/platform/android/AndroidPlatform.jar",
            "libCHIPTlv.jar": "src/controller/java/libCHIPTlv.jar",
        }

        for jarName in jars.keys():
            self._Execute(
                [
                    "cp",
                    os.path.join(self.output_dir, "lib", jars[jarName]),
                    os.path.join(libs_dir, jarName),
                ]
            )

    def copyToExampleApp(self, jnilibs_dir, libs_dir, libs, jars):
        self._Execute(
            ["mkdir", "-p", jnilibs_dir], title="Prepare Native libs " + self.identifier
        )

        for libName in libs:
            self._Execute(
                [
                    "cp",
                    os.path.join(
                        self.output_dir, "lib", "jni", self.board.AbiName(), libName
                    ),
                    os.path.join(jnilibs_dir, libName),
                ]
            )

        for jarName in jars.keys():
            self._Execute(
                [
                    "cp",
                    os.path.join(self.output_dir, "lib", jars[jarName]),
                    os.path.join(libs_dir, jarName),
                ]
            )

    def gradlewBuildSrcAndroid(self):
        # App compilation
        self._Execute(
            [
                "%s/examples/android/%s/gradlew" % (
                    self.root, self.app.AppName()),
                "-p",
                "%s/examples/android/%s" % (self.root, self.app.AppName()),
                "-PmatterBuildSrcDir=%s" % self.output_dir,
                "-PmatterSdkSourceBuild=false",
                "-PbuildDir=%s" % self.output_dir,
                "assembleDebug",
            ],
            title="Building APP " + self.identifier,
        )

    def gradlewBuildExampleAndroid(self):

        # Example compilation
        if self.app.Modules():
            for module in self.app.Modules():
                self._Execute(
                    [
                        "%s/examples/%s/android/App/gradlew"
                        % (self.root, self.app.ExampleName()),
                        "-p",
                        "%s/examples/%s/android/App/"
                        % (self.root, self.app.ExampleName()),
                        "-PmatterBuildSrcDir=%s" % self.output_dir,
                        "-PmatterSdkSourceBuild=false",
                        "-PbuildDir=%s/%s" % (self.output_dir, module),
                        ":%s:assembleDebug" % module,
                    ],
                    title="Building Example %s, module %s" % (
                        self.identifier, module),
                )
        else:
            self._Execute(
                [
                    "%s/examples/%s/android/App/gradlew"
                    % (self.root, self.app.ExampleName()),
                    "-p",
                    "%s/examples/%s/android/App/" % (self.root,
                                                     self.app.ExampleName()),
                    "-PmatterBuildSrcDir=%s" % self.output_dir,
                    "-PmatterSdkSourceBuild=false",
                    "-PbuildDir=%s" % self.output_dir,
                    "assembleDebug",
                ],
                title="Building Example " + self.identifier,
            )

    def generate(self):
        self._Execute(
            ["python3", "third_party/android_deps/set_up_android_deps.py"],
            title="Setting up Android deps through Gradle",
        )

        self._Execute(
            ["third_party/java_deps/set_up_java_deps.sh"],
            title="Setting up Java deps",
        )

        if not os.path.exists(self.output_dir):
            # NRF does a in-place update  of SDK tools
            if not self._runner.dry_run:
                self.validate_build_environment()

            gn_args = {}
            gn_args["target_os"] = "android"
            gn_args["target_cpu"] = self.board.TargetCpuName()
            gn_args["android_ndk_root"] = os.environ["ANDROID_NDK_HOME"]
            gn_args["android_sdk_root"] = os.environ["ANDROID_HOME"]
            if self.profile != AndroidProfile.DEBUG:
                gn_args["is_debug"] = False
            gn_args.update(self.app.AppGnArgs())

            args_str = ""
            for key, value in gn_args.items():
                if type(value) == bool:
                    if value:
                        args_str += "%s=true " % (key)
                    else:
                        args_str += "%s=false " % (key)
                else:
                    args_str += '%s="%s" ' % (key, shlex.quote(value))
            args = "--args=%s" % (args_str)

            gn_gen = [
                "gn",
                "gen",
                "--check",
                "--fail-on-unused-args",
                self.output_dir,
                args,
            ]

            exampleName = self.app.ExampleName()
            if exampleName is not None:
                gn_gen += ["--root=%s/examples/%s/android/" %
                           (self.root, exampleName)]

            if self.board.IsIde():
                gn_gen += [
                    "--ide=json",
                    "--json-ide-script=//scripts/examples/gn_to_cmakelists.py",
                ]

            self._Execute(gn_gen, title="Generating " + self.identifier)

            new_sdk_manager = os.path.join(
                os.environ["ANDROID_HOME"],
                "cmdline-tools",
                "latest",
                "bin",
                "sdkmanager",
            )
            if os.path.isfile(new_sdk_manager) and os.access(new_sdk_manager, os.X_OK):
                self._Execute(
                    ["bash", "-c", "yes | %s --licenses >/dev/null" %
                        new_sdk_manager],
                    title="Accepting NDK licenses @ cmdline-tools",
                )
            else:
                sdk_manager = os.path.join(
                    os.environ["ANDROID_HOME"], "tools", "bin", "sdkmanager"
                )
                self._Execute(
                    ["bash", "-c", "yes | %s --licenses >/dev/null" % sdk_manager],
                    title="Accepting NDK licenses @ tools",
                )

    def stripSymbols(self):
        output_libs_dir = os.path.join(
            self.output_dir,
            "lib",
            "jni",
            self.board.AbiName())
        for lib in os.listdir(output_libs_dir):
            if (lib.endswith(".so")):
                self._Execute(
                    ["llvm-strip",
                     "-s",
                     os.path.join(output_libs_dir, lib)
                     ],
                    "Stripping symbols from " + lib
                )

    def _build(self):
        if self.board.IsIde():
            # App compilation IDE
            # TODO: Android Gradle with module and -PbuildDir= will caused issue, remove -PbuildDir=
            self._Execute(
                [
                    "%s/examples/android/%s/gradlew" % (
                        self.root, self.app.AppName()),
                    "-p",
                    "%s/examples/android/%s" % (self.root, self.app.AppName()),
                    "-PmatterBuildSrcDir=%s" % self.output_dir,
                    "-PmatterSdkSourceBuild=true",
                    "-PmatterSourceBuildAbiFilters=%s" % self.board.AbiName(),
                    "assembleDebug",
                ],
                title="Building APP " + self.identifier,
            )
        else:
            self._Execute(
                ["ninja", "-C", self.output_dir],
                title="Building JNI " + self.identifier,
            )

            exampleName = self.app.ExampleName()
            if exampleName is None:
                self.copyToSrcAndroid()
                self.gradlewBuildSrcAndroid()
            elif exampleName == "tv-casting-app":
                jnilibs_dir = os.path.join(
                    self.root,
                    "examples/",
                    self.app.ExampleName(),
                    "android/App/app/libs/jniLibs",
                    self.board.AbiName(),
                )

                libs_dir = os.path.join(
                    self.root, "examples/", self.app.ExampleName(), "android/App/app/libs"
                )

                libs = ["libc++_shared.so", "libTvCastingApp.so"]

                jars = {
                    "AndroidPlatform.jar": "third_party/connectedhomeip/src/platform/android/AndroidPlatform.jar",
                    "CHIPAppServer.jar": "third_party/connectedhomeip/src/app/server/java/CHIPAppServer.jar",
                    "TvCastingApp.jar": "TvCastingApp.jar",
                }

                self.copyToExampleApp(jnilibs_dir, libs_dir, libs, jars)
                self.gradlewBuildExampleAndroid()
            elif exampleName == "tv-app":
                jnilibs_dir = os.path.join(
                    self.root,
                    "examples/",
                    self.app.ExampleName(),
                    "android/App/app/libs/jniLibs",
                    self.board.AbiName(),
                )

                libs_dir = os.path.join(
                    self.root, "examples/", self.app.ExampleName(), "android/App/app/libs"
                )

                libs = ["libc++_shared.so", "libTvApp.so"]

                jars = {
                    "OnboardingPayload.jar": "third_party/connectedhomeip/src/controller/java/OnboardingPayload.jar",
                    "AndroidPlatform.jar": "third_party/connectedhomeip/src/platform/android/AndroidPlatform.jar",
                    "CHIPAppServer.jar": "third_party/connectedhomeip/src/app/server/java/CHIPAppServer.jar",
                    "TvApp.jar": "TvApp.jar",
                }

                self.copyToExampleApp(jnilibs_dir, libs_dir, libs, jars)
                self.gradlewBuildExampleAndroid()

            if (self.profile != AndroidProfile.DEBUG):
                self.stripSymbols()

    def build_outputs(self):
        if self.board.IsIde():
            outputs = {
                self.app.AppName()
                + "-debug.apk": os.path.join(
                    self.root,
                    "examples/android",
                    self.app.AppName(),
                    "app/build/outputs/apk/debug/app-debug.apk",
                )
            }
        elif self.app.ExampleName() is not None:
            if self.app == AndroidApp.TV_SERVER:
                outputs = {
                    "tv-sever-platform-app-debug.apk": os.path.join(
                        self.output_dir, "platform-app", "outputs", "apk", "debug", "platform-app-debug.apk"
                    ),
                    "tv-sever-content-app-debug.apk": os.path.join(
                        self.output_dir, "content-app", "outputs", "apk", "debug", "content-app-debug.apk"
                    )
                }
            else:
                outputs = {
                    self.app.AppName() + "app-debug.apk": os.path.join(
                        self.output_dir, "outputs", "apk", "debug", "app-debug.apk"
                    )
                }
        else:
            outputs = {
                self.app.AppName() + "app-debug.apk": os.path.join(
                    self.output_dir, "outputs", "apk", "debug", "app-debug.apk"
                ),
                "CHIPController.jar": os.path.join(
                    self.output_dir, "lib", "src/controller/java/CHIPController.jar"
                ),
                "libCHIPTlv.jar": os.path.join(
                    self.output_dir, "lib", "src/controller/java/libCHIPTlv.jar"
                ),
                "AndroidPlatform.jar": os.path.join(
                    self.output_dir, "lib", "src/platform/android/AndroidPlatform.jar"
                ),
                "OnboardingPayload.jar": os.path.join(
                    self.output_dir,
                    "lib",
                    "src/controller/java/OnboardingPayload.jar",
                ),
                "jni/%s/libCHIPController.so"
                % self.board.AbiName(): os.path.join(
                    self.output_dir,
                    "lib",
                    "jni",
                    self.board.AbiName(),
                    "libCHIPController.so",
                ),
                "jni/%s/libc++_shared.so"
                % self.board.AbiName(): os.path.join(
                    self.output_dir,
                    "lib",
                    "jni",
                    self.board.AbiName(),
                    "libc++_shared.so",
                ),
            }

        return outputs