def main():
"""
Main module code.
"""
# pylint: disable=locally-disabled,too-many-branches
# Parse arguments
args = parse_args()
# Set logger
if args.vv:
logging.getLogger('').setLevel(logging.DEBUG)
logging.getLogger('sqlalchemy.engine').setLevel(logging.DEBUG)
elif args.verbose:
logging.getLogger('').setLevel(logging.INFO)
# sqlalchemy INFO level is way too loud, just stick with WARNING
logging.getLogger('sqlalchemy.engine').setLevel(logging.WARNING)
else:
logging.getLogger('').setLevel(logging.WARNING)
logging.getLogger('sqlalchemy.engine').setLevel(logging.WARNING)
# Init-config command
if args.cmd == "init-config":
flatisfy.config.init_config(args.output)
sys.exit(0)
else:
# Load config
if args.cmd == "build-data":
# Data not yet built, do not use it in config checks
config = flatisfy.config.load_config(args, check_with_data=False)
else:
config = flatisfy.config.load_config(args, check_with_data=True)
if config is None:
LOGGER.error("Invalid configuration. Exiting. "
"Run init-config before if this is the first time "
"you run Flatisfy.")
sys.exit(1)
# Purge command
if args.cmd == "purge":
cmds.purge_db(config)
return
# Build data files
try:
force = False
if args.cmd == "build-data":
force = True
data.preprocess_data(config, force=force)
LOGGER.info("Done building data!")
if args.cmd == "build-data":
sys.exit(0)
except flatisfy.exceptions.DataBuildError as exc:
LOGGER.error("%s", exc)
sys.exit(1)
# Fetch command
if args.cmd == "fetch":
# Fetch and filter flats list
fetched_flats = fetch.fetch_flats(config)
fetched_flats = cmds.filter_fetched_flats(config,
fetched_flats=fetched_flats,
fetch_details=True)
# Sort by cost
fetched_flats = {
k: tools.sort_list_of_dicts_by(v["new"], "cost")
for k, v in fetched_flats.items()
}
print(tools.pretty_json(fetched_flats))
return
# Filter command
elif args.cmd == "filter":
# Load and filter flats list
if args.input:
fetched_flats = fetch.load_flats_from_file(args.input, config)
fetched_flats = cmds.filter_fetched_flats(
config, fetched_flats=fetched_flats, fetch_details=False)
# Sort by cost
fetched_flats = {
k: tools.sort_list_of_dicts_by(v["new"], "cost")
for k, v in fetched_flats.items()
}
# Output to stdout
print(tools.pretty_json(fetched_flats))
else:
cmds.import_and_filter(config, load_from_db=True)
return
# Import command
elif args.cmd == "import":
cmds.import_and_filter(config, load_from_db=False)
return
# Serve command
elif args.cmd == "serve":
cmds.serve(config)
return
def import_and_filter(config, load_from_db=False, new_only=False):
"""
Fetch the available flats list. Then, filter it according to criteria.
Finally, store it in the database.
:param config: A config dict.
:param load_from_db: Whether to load flats from database or fetch them
using Woob.
:return: ``None``.
"""
# Fetch and filter flats list
past_flats = fetch.load_flats_from_db(config)
if load_from_db:
fetched_flats = past_flats
else:
fetched_flats = fetch.fetch_flats(config)
# Do not fetch additional details if we loaded data from the db.
flats_by_status = filter_fetched_flats(
config,
fetched_flats=fetched_flats,
fetch_details=(not load_from_db),
past_flats=past_flats if new_only else {},
)
# Create database connection
get_session = database.init_db(config["database"], config["search_index"])
new_flats = []
result = []
LOGGER.info("Merging fetched flats in database...")
# Flatten the flats_by_status dict
flatten_flats_by_status = collections.defaultdict(list)
for flats in flats_by_status.values():
for status, flats_list in flats.items():
flatten_flats_by_status[status].extend(flats_list)
with get_session() as session:
# Set is_expired to true for all existing flats.
# This will be set back to false if we find them during importing.
for flat in session.query(flat_model.Flat).all():
flat.is_expired = True
for status, flats_list in flatten_flats_by_status.items():
# Build SQLAlchemy Flat model objects for every available flat
flats_objects = {flat_dict["id"]: flat_model.Flat.from_dict(flat_dict) for flat_dict in flats_list}
if flats_objects:
# If there are some flats, try to merge them with the ones in
# db
existing_flats_queries = session.query(flat_model.Flat).filter(
flat_model.Flat.id.in_(flats_objects.keys())
)
for each in existing_flats_queries.all():
# For each flat to merge, take care not to overwrite the
# status if the user defined it
flat_object = flats_objects[each.id]
if each.status in flat_model.AUTOMATED_STATUSES:
flat_object.status = getattr(flat_model.FlatStatus, status)
else:
flat_object.status = each.status
# Every flat we fetched isn't expired
flat_object.is_expired = False
# For each flat already in the db, merge it (UPDATE)
# instead of adding it
session.merge(flats_objects.pop(each.id))
# For any other flat, it is not already in the database, so we can
# just set the status field without worrying
for flat in flats_objects.values():
flat.status = getattr(flat_model.FlatStatus, status)
if flat.status == flat_model.FlatStatus.new:
new_flats.append(flat)
result.append(flat.id)
session.add_all(flats_objects.values())
if config["send_email"]:
email.send_notification(config, new_flats)
LOGGER.info(f"Found {len(result)} new flats.")
# Touch a file to indicate last update timestamp
ts_file = os.path.join(config["data_directory"], "timestamp")
with open(ts_file, "w"):
os.utime(ts_file, None)
LOGGER.info("Done!")
return result
def import_and_filter(config, load_from_db=False):
"""
Fetch the available flats list. Then, filter it according to criteria.
Finally, store it in the database.
:param config: A config dict.
:param load_from_db: Whether to load flats from database or fetch them
using WebOOB.
:return: ``None``.
"""
# Fetch and filter flats list
if load_from_db:
fetched_flats = fetch.load_flats_from_db(config)
else:
fetched_flats = fetch.fetch_flats(config)
# Do not fetch additional details if we loaded data from the db.
flats_by_status = filter_fetched_flats(config,
fetched_flats=fetched_flats,
fetch_details=(not load_from_db))
# Create database connection
get_session = database.init_db(config["database"], config["search_index"])
new_flats = []
LOGGER.info("Merging fetched flats in database...")
# Flatten the flats_by_status dict
flatten_flats_by_status = collections.defaultdict(list)
for flats in flats_by_status.values():
for status, flats_list in flats.items():
flatten_flats_by_status[status].extend(flats_list)
with get_session() as session:
for status, flats_list in flatten_flats_by_status.items():
# Build SQLAlchemy Flat model objects for every available flat
flats_objects = {
flat_dict["id"]: flat_model.Flat.from_dict(flat_dict)
for flat_dict in flats_list
}
if flats_objects:
# If there are some flats, try to merge them with the ones in
# db
existing_flats_queries = session.query(flat_model.Flat).filter(
flat_model.Flat.id.in_(flats_objects.keys()))
for each in existing_flats_queries.all():
# For each flat to merge, take care not to overwrite the
# status if the user defined it
flat_object = flats_objects[each.id]
if each.status in flat_model.AUTOMATED_STATUSES:
flat_object.status = getattr(flat_model.FlatStatus,
status)
else:
flat_object.status = each.status
# For each flat already in the db, merge it (UPDATE)
# instead of adding it
session.merge(flats_objects.pop(each.id))
# For any other flat, it is not already in the database, so we can
# just set the status field without worrying
for flat in flats_objects.values():
flat.status = getattr(flat_model.FlatStatus, status)
if flat.status == flat_model.FlatStatus.new:
new_flats.append(flat)
session.add_all(flats_objects.values())
if config["send_email"]:
email.send_notification(config, new_flats)
LOGGER.info("Done!")
