wp-cal-integration/main.py

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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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import os
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import sys
import yaml
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import logging
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import datetime
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try:
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from yaml import CLoader as Loader, CDumper as Dumper
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except ImportError:
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from yaml import Loader, Dumper
import click
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from adapters import *
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logger = logging.getLogger(f'wp_cal')
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class BaseConfig(dict):
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def __init__(self, file, defaults, overrides, *args, **kwargs):
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self._ex = None
self.file = file
self.defaults = defaults
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self.overrides = overrides
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super().__init__(*args, **kwargs)
try:
self._load()
except FileNotFoundError as ex:
self._ex = ex
def __repr__(self):
return super().__repr__()
def __str__(self):
return super().__str__()
def _load(self):
try:
if self.file == '-':
config = yaml.load(sys.stdin, Loader=Loader)
else:
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if os.stat(self.file).st_mode & 0o777 & ~0o600:
raise Exception('refusing to load insecure configuration file, file must have permission 0o600')
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with open(self.file) as fp:
config = yaml.load(fp, Loader=Loader)
if config is None:
config = {}
for k, v in config.items():
self[k] = v
finally:
for keylist, value in self.defaults:
d = self
for i, key in enumerate(keylist):
repl = value if (i == len(keylist) - 1) else {}
d[key] = d.get(key, repl)
d = d[key]
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for keylist, value in self.overrides:
d = self
for key in keylist[:-1]:
d[key] = d.get(key, {})
d = d[key]
d[keylist[-1]] = value
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def _save(self):
with open(self.file, 'w') as fp:
yaml.dump(self, fp, Dumper=Dumper)
def exception(self):
return self._ex
def load(self):
return self._load()
def save(self):
return self._save()
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class Config(BaseConfig):
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"""
The default configuration.
Keys:
.google.calendar_id: the id of the calendar to sync
.google.credentials: the json of the obtained credentials file
.google.token_file: where to save the login token
.wordpress.url: the base wordpress url
.wordpress.calendar.id: the id of the (wp-booking-system) calendar
.wordpress.calendar.name: the name of the calendar
.wordpress.calendar.translations: a dictionary of language <-> translation pairs (example: {"en": "Reservations"})
.wordpress.credentials.user: the user as which to log into wordpress
.wordpress.credentials.password: the users password
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.logging.level: one or more log levels of the form <module.submodule>:<level> seperated by a `,` (comma)
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.range: the range in the format <nnn><u>, where n are digits and u is the unit; valid units: 'smhdw' <-> seconds minutes hours days weeks
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"""
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def __init__(self, file, defaults, overrides, converters, *args, **kwargs):
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defaults += [
('google.calendar_id', '#TODO insert google calendar id'),
('google.credentials', {}),
('google.token_file', os.path.join(os.environ['HOME'], '.wp-cal-google-token')),
('wordpress.url', '#TODO insert url to wordpress site'),
('wordpress.calendar.id', '#TODO insert wp-booking-system calendar id'),
('wordpress.calendar.name', '#TODO insert calendar name'),
('wordpress.calendar.translations', {'en': '#TODO insert english translation'}),
('wordpress.credentials.user', '#TODO insert wordpress username'),
('wordpress.credentials.password', '#TODO insert wordpress password'),
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('logging.level', ':WARNING,wp_cal:INFO'),
('range', '365d'),
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]
defaults = [(x[0].split('.'), x[1]) for x in defaults]
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overrides = [(x[0].split('.'), x[1]) for x in overrides]
self.converters = converters
super().__init__(file, defaults, overrides, *args, **kwargs)
def value(self, k):
if isinstance(k, str):
sel = k.split('.')
elif isinstance(k, list):
sel = k
k = '.'.join(k)
else:
raise TypeError('invalid type for parameter k')
v = self
for s in sel:
v = v[s]
if k in self.converters:
return self.converters[k](v)
return v
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def range_str_to_timedelta(value):
valid_units = 'smhdw'
current_int = 0
values = {}
for c in value:
if c in '0123456789':
current_int *= 10
current_int += int(c)
elif c in valid_units:
if c in values:
logger.warning('unit %s already in values, overwriting', c)
values[c] = current_int
current_int = 0
c = 's'
if current_int != 0:
if c in values:
logger.warning('unit %s already in values, overwriting', c)
values['s'] = current_int
for valid_unit in valid_units:
values.setdefault(valid_unit, 0)
return datetime.timedelta(
seconds=values['s'],
minutes=values['m'],
hours=values['h'],
days=values['d'],
weeks=values['w']
)
def init_logging():
logging.getLogger().addHandler(
logging.StreamHandler(),
)
def set_logging_level(level: str):
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allowed_values = {'NOTSET', 'DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'}
log_levels = [x.split(':') for x in level.split(',')]
for module, level in log_levels:
module = module.strip() if module else None
level = level.strip().upper()
if level not in allowed_values:
raise ValueError(f'invalid log level, allowed values: {repr(allowed_values)}')
level = getattr(logging, level)
logging.getLogger(module).setLevel(level)
@click.command()
@click.option('--config', '-c', envvar='WP_CAL_CONFIG', default='-', help='The configuration file')
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@click.option('--dryrun', '-d', envvar='WP_CAL_DRYRUN', is_flag=True, help="Don't actually post any data, just show it")
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@click.option('--level', '-l', envvar='WP_CAL_LEVEL', default=None, help='The log level for the application')
@click.option('--range', '-r', envvar='WP_CAL_RANGE', default=None, help='The time range from start to start + range to synchronize events')
def main(config, dryrun, level, range):
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init_logging()
set_logging_level(level)
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config_overrides = [('logging.level', level), ('range', range)]
config_overrides = [x for x in config_overrides if x[1] is not None]
converters = {
'range': range_str_to_timedelta,
}
config = Config(config, [], config_overrides, converters)
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if config.exception():
logger.info('config not found, trying to generate template')
try:
config.save()
except Exception:
logger.exception('failed to generate template')
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else:
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logger.info('generated config at "%s"', config.file)
return
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set_logging_level(str(config.value('logging.level')))
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g = Google(
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config.value('google.calendar_id'),
credentials=config.value('google.credentials'),
token_file=config.value('google.token_file'),
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)
w = Wordpress(
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config.value('wordpress.url'),
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calendar_metadata=CalendarMetadata(
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id=config.value('wordpress.calendar.id'),
name=config.value('wordpress.calendar.name'),
translations=config.value('wordpress.calendar.translations'),
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),
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credentials=config.value('wordpress.credentials'),
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)
g.login()
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events = g.get_events(until=config.value('range'))
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logger.info("syncing %d events", len(events))
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if not w.login():
logger.info('failed to login to wordpress')
return 1
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if dryrun:
logger.info("dryrun; would post events: %s", events)
else:
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if not w.post_events(events, until=config.value('range')):
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logger.info('failed to post event data')
return 1
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logger.info("done")
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return 0
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if __name__ == '__main__':
main()