# 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
from enum import Enum, auto

from .gn import GnBuilder


class Efr32App(Enum):
    LIGHT = auto()
    LOCK = auto()
    SWITCH = auto()
    WINDOW_COVERING = auto()
    UNIT_TEST = auto()

    def ExampleName(self):
        if self == Efr32App.LIGHT:
            return 'lighting-app'
        elif self == Efr32App.LOCK:
            return 'lock-app'
        elif self == Efr32App.SWITCH:
            return 'light-switch-app'
        elif self == Efr32App.WINDOW_COVERING:
            return 'window-app'
        else:
            raise Exception('Unknown app type: %r' % self)

    def AppNamePrefix(self):
        if self == Efr32App.LIGHT:
            return 'chip-efr32-lighting-example'
        elif self == Efr32App.LOCK:
            return 'chip-efr32-lock-example'
        elif self == Efr32App.SWITCH:
            return 'chip-efr32-light-switch-example'
        elif self == Efr32App.WINDOW_COVERING:
            return 'chip-efr32-window-example'
        elif self == Efr32App.UNIT_TEST:
            return 'chip-efr32-device_tests'
        else:
            raise Exception('Unknown app type: %r' % self)

    def FlashBundleName(self):
        if self == Efr32App.LIGHT:
            return 'lighting_app.flashbundle.txt'
        elif self == Efr32App.LOCK:
            return 'lock_app.flashbundle.txt'
        elif self == Efr32App.SWITCH:
            return 'light_switch_app.flashbundle.txt'
        elif self == Efr32App.WINDOW_COVERING:
            return 'window_app.flashbundle.txt'
        elif self == Efr32App.UNIT_TEST:
            return 'efr32_device_tests.flashbundle.txt'
        else:
            raise Exception('Unknown app type: %r' % self)

    def BuildRoot(self, root):
        if self == Efr32App.UNIT_TEST:
            return os.path.join(root, 'src', 'test_driver', 'efr32')
        if self == Efr32App.LIGHT:
            return os.path.join(root, 'examples', self.ExampleName(), 'silabs/efr32')
        else:
            return os.path.join(root, 'examples', self.ExampleName(), 'efr32')


class Efr32Board(Enum):
    BRD4161A = 1
    BRD4163A = 2
    BRD4164A = 3
    BRD4166A = 4
    BRD4170A = 5
    BRD4186A = 6
    BRD4187A = 7
    BRD4304A = 8
    BRD4187C = 9

    def GnArgName(self):
        if self == Efr32Board.BRD4161A:
            return 'BRD4161A'
        elif self == Efr32Board.BRD4163A:
            return 'BRD4163A'
        elif self == Efr32Board.BRD4164A:
            return 'BRD4164A'
        elif self == Efr32Board.BRD4166A:
            return 'BRD4166A'
        elif self == Efr32Board.BRD4170A:
            return 'BRD4170A'
        elif self == Efr32Board.BRD4186A:
            return 'BRD4186A'
        elif self == Efr32Board.BRD4187A:
            return 'BRD4187A'
        elif self == Efr32Board.BRD4304A:
            return 'BRD4304A'
        elif self == Efr32Board.BRD4187C:
            return 'BRD4187C'
        else:
            raise Exception('Unknown board #: %r' % self)


class Efr32Builder(GnBuilder):

    def __init__(self,
                 root,
                 runner,
                 app: Efr32App = Efr32App.LIGHT,
                 board: Efr32Board = Efr32Board.BRD4161A,
                 enable_rpcs: bool = False,
                 enable_ota_requestor: bool = False,
                 enable_sed: bool = False,
                 enable_low_power: bool = False
                 ):
        super(Efr32Builder, self).__init__(
            root=app.BuildRoot(root),
            runner=runner)
        self.app = app
        self.extra_gn_options = ['silabs_board="%s"' % board.GnArgName()]

        if enable_rpcs:
            self.extra_gn_options.append('is_debug=false import("//with_pw_rpc.gni")')

        if enable_ota_requestor:
            self.extra_gn_options.append('chip_enable_ota_requestor=true')

        if enable_sed:
            self.extra_gn_options.append('enable_sleepy_device=true chip_openthread_ftd=false')

        if enable_low_power:
            self.extra_gn_options.append(
                'chip_build_libshell=false enable_openthread_cli=false show_qr_code=false disable_lcd=true')

    def GnBuildArgs(self):
        return self.extra_gn_options

    def build_outputs(self):
        items = {}
        for extension in ["out", "out.map", "hex"]:
            name = '%s.%s' % (self.app.AppNamePrefix(), extension)
            items[name] = os.path.join(self.output_dir, name)

        if self.app == Efr32App.UNIT_TEST:
            # Include test runner python wheels
            for root, dirs, files in os.walk(os.path.join(self.output_dir, 'chip_nl_test_runner_wheels')):
                for file in files:
                    items["chip_nl_test_runner_wheels/" +
                          file] = os.path.join(root, file)

        # Figure out flash bundle files and build accordingly
        with open(os.path.join(self.output_dir, self.app.FlashBundleName())) as f:
            for line in f.readlines():
                name = line.strip()
                items['flashbundle/%s' %
                      name] = os.path.join(self.output_dir, name)

        return items