# Mycroft Server - Backend
# Copyright (C) 2019 Mycroft AI Inc
# SPDX-License-Identifier: 	AGPL-3.0-or-later
#
# This file is part of the Mycroft Server.
#
# The Mycroft Server is free software: you can redistribute it and/or
# modify it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.

"""Update skill.display table with skill information from repositories.

Download skill-metadata.json from the mycroft-skills-data GitHub repository.
Use the contents of the file to update the skill.display table which is
primarily for displaying skills in the marketplace.

The mycroft-skills-data repository has a branch for each major release of
Mycroft core containing the skills available in that release.
"""
import json
from os import environ

from selene.batch import SeleneScript
from selene.data.skill import SkillDisplay, SkillDisplayRepository, SkillRepository
from selene.util.github import download_repository_file, log_into_github

GITHUB_USER = environ["GITHUB_USER"]
GITHUB_PASSWORD = environ["GITHUB_PASSWORD"]
SKILL_DATA_GITHUB_REPO = "mycroft-skills-data"
SKILL_DATA_FILE_NAME = "skill-metadata.json"


class SkillDisplayUpdater(SeleneScript):
    def __init__(self):
        super(SkillDisplayUpdater, self).__init__(__file__)
        self.skill_display_data = None

    def _define_args(self):
        super(SkillDisplayUpdater, self)._define_args()
        self._arg_parser.add_argument(
            "--core-version",
            help="Version of Mycroft Core related to skill display data",
            required=True,
            type=str,
        )

    def _run(self):
        """Make it so."""
        self.log.info(
            "Updating skill display data for core version " + self.args.core_version
        )
        self._get_skill_display_data()
        self._update_skill_display_table()

    def _get_skill_display_data(self):
        """Use the GitHub API to retrieve the JSON file."""
        github_api = log_into_github(GITHUB_USER, GITHUB_PASSWORD)
        file_contents = download_repository_file(
            github_api,
            SKILL_DATA_GITHUB_REPO,
            self.args.core_version,
            SKILL_DATA_FILE_NAME,
        )
        self.skill_display_data = json.loads(file_contents)

    def _update_skill_display_table(self):
        skill_count = 0
        skill_repository = SkillRepository(self.db)
        display_repository = SkillDisplayRepository(self.db)
        for skill_name, skill_metadata in self.skill_display_data.items():
            skill_count += 1
            skill_id = skill_repository.ensure_skill_exists(skill_metadata["skill_gid"])

            # add the skill display row
            display_data = SkillDisplay(
                skill_id=skill_id,
                core_version=self.args.core_version,
                display_data=json.dumps(skill_metadata),
            )
            display_repository.upsert(display_data)

        self.log.info("updated {} skills".format(skill_count))


if __name__ == "__main__":
    SkillDisplayUpdater().run()
