Gradience/gradience/backend/preset_downloader.py

105 lines
3.3 KiB
Python

# preset_downloader.py
#
# Change the look of Adwaita, with ease
# Copyright (C) 2022 Gradience Team
#
# 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/>.
import os
import json
from gi.repository import GLib, Soup
from gradience.backend.globals import presets_dir
from gradience.backend.utils.common import to_slug_case
from gradience.backend.logger import Logger
logging = Logger()
class PresetDownloader:
def __init__(self):
# Open Soup3 session
self.session = Soup.Session()
def fetch_presets(self, repo) -> [dict, list]:
try:
request = Soup.Message.new("GET", repo)
body = self.session.send_and_read(request, None)
except GLib.GError as e:
if e.code == 1: # offline
logging.error("Failed to establish a new connection.", exc=e)
raise
else:
logging.error(f"Unhandled Libsoup3 GLib.GError error code {e.code}.", exc=e)
raise
try:
raw = json.loads(body.get_data())
except json.JSONDecodeError as e:
logging.error("Error while decoding JSON data.", exc=e)
raise
preset_dict = {}
url_list = []
for data in raw.items():
data = list(data)
data.insert(0, to_slug_case(data[0]))
url = data[2]
data.pop(2) # Remove preset URL from list
to_dict = iter(data)
# Convert list back to dict
preset_dict.update(dict(zip(to_dict, to_dict)))
url_list.append(url)
return preset_dict, url_list
def download_preset(self, name, repo_name, repo) -> None:
try:
request = Soup.Message.new("GET", repo)
body = self.session.send_and_read(request, None)
except GLib.GError as e:
if e.code == 1: # offline
logging.error("Failed to establish a new connection.", exc=e)
raise
else:
logging.error(f"Unhandled Libsoup3 GLib.GError error code {e.code}.", exc=e)
raise
try:
raw = json.loads(body.get_data())
except json.JSONDecodeError as e:
logging.error("Error while decoding JSON data.", exc=e)
raise
data = json.dumps(raw, indent=4)
try:
with open(
os.path.join(
presets_dir,
repo_name,
to_slug_case(name) + ".json",
),
"w",
encoding="utf-8",
) as f:
f.write(data)
f.close()
except OSError as e:
logging.error("Failed to write data to a file.", exc=e)
raise