# Copyright (c) 2022 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 logging
import os
import shlex

from .type_definitions import IdlFileType, InputIdlFile

log = logging.getLogger(__name__)

CODEGEN_PY_PATH = os.path.abspath(os.path.join(
    os.path.dirname(__file__), '..', 'codegen.py'))


class CodegenTarget:
    """A target that uses `scripts/codegen.py` to generate files."""

    def __init__(self, idl: InputIdlFile, generator: str, sdk_root: str, runner, options=[]):
        self.idl = idl
        self.generator = generator
        self.sdk_root = sdk_root
        self.runner = runner
        self.options = options

        if idl.file_type != IdlFileType.MATTER:
            raise Exception(
                f"Can only code generate for `*.matter` input files, not for {idl}")

    def Generate(self, output_root: str):
        '''Runs codegen.py to generate in the specified directory'''

        output_dir = os.path.join(
            output_root, self.idl.pregen_subdir, self.generator)

        log.info("Generating: '%s:%s' into '%s'", self.generator, self.idl.full_path, output_dir)

        cmd = [
            CODEGEN_PY_PATH,
            '--log-level', 'fatal',
            '--generator', self.generator,
            '--output-dir', output_dir,
        ]
        for option in self.options:
            cmd.append("--option")
            cmd.append(option)

        cmd.append(self.idl.full_path)

        log.debug("Executing: %s", shlex.join(cmd))
        self.runner.run(cmd)


class CodegenJavaJNIPregenerator:
    """Pregeneration logic for "java" codegen.py outputs"""

    def __init__(self, sdk_root):
        self.sdk_root = sdk_root

    def Accept(self, idl: InputIdlFile):
        # Java is highly specific, a single path is acceptable for codegen
        return idl.relative_path == "src/controller/data_model/controller-clusters.matter"

    def CreateTarget(self, idl: InputIdlFile, runner):
        return CodegenTarget(sdk_root=self.sdk_root, idl=idl, generator="java-jni", runner=runner)


class CodegenJavaClassPregenerator:
    """Pregeneration logic for "java" codegen.py outputs"""

    def __init__(self, sdk_root):
        self.sdk_root = sdk_root

    def Accept(self, idl: InputIdlFile):
        # Java is highly specific, a single path is acceptable for dynamic
        # bridge codegen
        return idl.relative_path == "src/controller/data_model/controller-clusters.matter"

    def CreateTarget(self, idl: InputIdlFile, runner):
        return CodegenTarget(sdk_root=self.sdk_root, idl=idl, generator="java-class", runner=runner)


class CodegenCppAppPregenerator:
    """Pregeneration logic for "cpp-app" codegen.py outputs"""

    def __init__(self, sdk_root):
        self.sdk_root = sdk_root

    def Accept(self, idl: InputIdlFile):
        if idl.file_type != IdlFileType.MATTER:
            return False

        if '/lib/format/' in idl.relative_path:
            return False

        # we should not be checked for these, but verify just in case
        return '/tests/' not in idl.relative_path

    def CreateTarget(self, idl: InputIdlFile, runner):
        return CodegenTarget(sdk_root=self.sdk_root, idl=idl, generator="cpp-app", runner=runner)


class CodegenCppProtocolsTLVMetaPregenerator:
    """Pregeneration logic for "cpp-app" codegen.py outputs"""

    def __init__(self, sdk_root):
        self.sdk_root = sdk_root

    def Accept(self, idl: InputIdlFile):
        return (idl.file_type == IdlFileType.MATTER) and idl.relative_path.endswith('/protocol_messages.matter')

    def CreateTarget(self, idl: InputIdlFile, runner):
        return CodegenTarget(sdk_root=self.sdk_root, idl=idl, generator="cpp-tlvmeta", options=["table_name:protocols_meta"], runner=runner)


class CodegenCppClustersTLVMetaPregenerator:
    """Pregeneration logic for "cpp-app" codegen.py outputs"""

    def __init__(self, sdk_root):
        self.sdk_root = sdk_root

    def Accept(self, idl: InputIdlFile):
        return (idl.file_type == IdlFileType.MATTER) and idl.relative_path.endswith('/controller-clusters.matter')

    def CreateTarget(self, idl: InputIdlFile, runner):
        return CodegenTarget(sdk_root=self.sdk_root, idl=idl, generator="cpp-tlvmeta", options=["table_name:clusters_meta"], runner=runner)