
# -*- coding: utf-8 -*-
#
# Copyright © 2012 - 2018 Michal Čihař <michal@cihar.com>
#
# This file is part of Weblate <https://weblate.org/>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
#
"""Hook scripts handling"""

import subprocess
from weblate.trans.util import get_clean_env


def run_post_push_script(component):
    """Run post push hook"""
    run_hook(component, None, component.post_push_script)


def run_post_update_script(component, previous_head):
    """Run post update hook"""
    run_hook(
        component, None, component.post_update_script,
        env={'WL_PREVIOUS_HEAD': previous_head}
    )


def run_pre_commit_script(component, translation, filename):
    """Pre commit hook"""
    run_hook(
        component, translation, component.pre_commit_script, args=[filename]
    )


def run_post_commit_script(component, translation, filename):
    """Post commit hook"""
    run_hook(
        component, translation, component.post_commit_script, args=[filename]
    )


def run_post_add_script(component, translation, filename):
    """Post add hook"""
    run_hook(
        component, translation, component.post_add_script, args=[filename]
    )


def run_hook(component, translation, script, env=None, args=None):
    """Generic script hook executor."""
    if not script:
        return True
    command = [script]
    if args:
        command.extend(args)
    if component.is_repo_link:
        target = component.linked_subproject
    else:
        target = component
    environment = {
        'WL_VCS': target.vcs,
        'WL_REPO': target.repo,
        'WL_PATH': target.full_path,
        'WL_FILEMASK': component.filemask,
        'WL_TEMPLATE': component.template,
        'WL_NEW_BASE': component.new_base,
        'WL_FILE_FORMAT': component.file_format,
        'WL_BRANCH': component.branch,
    }
    if translation:
        environment['WL_LANGUAGE'] = translation.language_code
    if env is not None:
        environment.update(env)
    try:
        subprocess.check_call(
            command,
            env=get_clean_env(environment),
            cwd=component.full_path,
        )
        return True
    except (OSError, subprocess.CalledProcessError) as err:
        component.log_error(
            'failed to run hook script %s: %s',
            script,
            err
        )
        return False
