#!/usr/bin/env python3
# Copyright 2016 gRPC 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.
"""Definition of targets to build distribution packages."""

import os.path
import sys

sys.path.insert(0, os.path.abspath('..'))
import python_utils.jobset as jobset


def create_docker_jobspec(name,
                          dockerfile_dir,
                          shell_command,
                          environ={},
                          flake_retries=0,
                          timeout_retries=0):
    """Creates jobspec for a task running under docker."""
    environ = environ.copy()

    docker_args = []
    for k, v in list(environ.items()):
        docker_args += ['-e', '%s=%s' % (k, v)]
    docker_env = {
        'DOCKERFILE_DIR': dockerfile_dir,
        'DOCKER_RUN_SCRIPT': 'tools/run_tests/dockerize/docker_run.sh',
        'DOCKER_RUN_SCRIPT_COMMAND': shell_command,
        'OUTPUT_DIR': 'artifacts'
    }
    jobspec = jobset.JobSpec(
        cmdline=['tools/run_tests/dockerize/build_and_run_docker.sh'] +
        docker_args,
        environ=docker_env,
        shortname='build_package.%s' % (name),
        timeout_seconds=30 * 60,
        flake_retries=flake_retries,
        timeout_retries=timeout_retries)
    return jobspec


def create_jobspec(name,
                   cmdline,
                   environ=None,
                   cwd=None,
                   shell=False,
                   flake_retries=0,
                   timeout_retries=0,
                   cpu_cost=1.0):
    """Creates jobspec."""
    jobspec = jobset.JobSpec(cmdline=cmdline,
                             environ=environ,
                             cwd=cwd,
                             shortname='build_package.%s' % (name),
                             timeout_seconds=10 * 60,
                             flake_retries=flake_retries,
                             timeout_retries=timeout_retries,
                             cpu_cost=cpu_cost,
                             shell=shell)
    return jobspec


class CSharpPackage:
    """Builds C# packages."""

    def __init__(self, platform, unity=False):
        self.platform = platform
        self.unity = unity
        self.labels = ['package', 'csharp', self.platform]
        if unity:
            self.name = 'csharp_package_unity_%s' % self.platform
            self.labels += ['unity']
        else:
            self.name = 'csharp_package_nuget_%s' % self.platform
            self.labels += ['nuget']

    def pre_build_jobspecs(self):
        return []

    def build_jobspec(self, inner_jobs=None):
        del inner_jobs  # arg unused as there is little opportunity for parallelizing
        environ = {
            'GRPC_CSHARP_BUILD_SINGLE_PLATFORM_NUGET':
                os.getenv('GRPC_CSHARP_BUILD_SINGLE_PLATFORM_NUGET', '')
        }

        build_script = 'src/csharp/build_unitypackage.sh' if self.unity else 'src/csharp/build_nuget.sh'

        if self.platform == 'linux':
            return create_docker_jobspec(
                self.name,
                'tools/dockerfile/test/csharp_debian11_x64',
                build_script,
                environ=environ)
        else:
            repo_root = os.path.join(os.path.dirname(os.path.abspath(__file__)),
                                     '..', '..', '..')
            environ['EXTERNAL_GIT_ROOT'] = repo_root
            return create_jobspec(self.name, ['bash', build_script],
                                  environ=environ)

    def __str__(self):
        return self.name


class RubyPackage:
    """Collects ruby gems created in the artifact phase"""

    def __init__(self):
        self.name = 'ruby_package'
        self.labels = ['package', 'ruby', 'linux']

    def pre_build_jobspecs(self):
        return []

    def build_jobspec(self, inner_jobs=None):
        del inner_jobs  # arg unused as this step simply collects preexisting artifacts
        return create_docker_jobspec(
            self.name, 'tools/dockerfile/grpc_artifact_centos6_x64',
            'tools/run_tests/artifacts/build_package_ruby.sh')


class PythonPackage:
    """Collects python eggs and wheels created in the artifact phase"""

    def __init__(self):
        self.name = 'python_package'
        self.labels = ['package', 'python', 'linux']

    def pre_build_jobspecs(self):
        return []

    def build_jobspec(self, inner_jobs=None):
        del inner_jobs  # arg unused as this step simply collects preexisting artifacts
        # since the python package build does very little, we can use virtually
        # any image that has new-enough python, so reusing one of the images used
        # for artifact building seems natural.
        return create_docker_jobspec(
            self.name,
            'tools/dockerfile/grpc_artifact_python_manylinux2014_x64',
            'tools/run_tests/artifacts/build_package_python.sh',
            environ={'PYTHON': '/opt/python/cp39-cp39/bin/python'})


class PHPPackage:
    """Copy PHP PECL package artifact"""

    def __init__(self):
        self.name = 'php_package'
        self.labels = ['package', 'php', 'linux']

    def pre_build_jobspecs(self):
        return []

    def build_jobspec(self, inner_jobs=None):
        del inner_jobs  # arg unused as this step simply collects preexisting artifacts
        return create_docker_jobspec(
            self.name, 'tools/dockerfile/grpc_artifact_centos6_x64',
            'tools/run_tests/artifacts/build_package_php.sh')


def targets():
    """Gets list of supported targets"""
    return [
        CSharpPackage('linux'),
        CSharpPackage('linux', unity=True),
        CSharpPackage('macos'),
        CSharpPackage('windows'),
        RubyPackage(),
        PythonPackage(),
        PHPPackage()
    ]
