Add features to see all reachable cities
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ba3bef3d27
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27
app.py
27
app.py
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@ -18,13 +18,11 @@ from tqdm import tqdm
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import config
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app = Flask(__name__)
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cli = AppGroup('tgvmax', help="Manage the TGVMax dataset.")
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app.cli.add_command(cli)
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app.config |= config.FLASK_CONFIG
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db = SQLAlchemy(app)
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@ -78,7 +76,8 @@ def update_dataset():
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modified_date = datetime.fromisoformat(info['dateModified'])
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utc = timezone('UTC')
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last_modified = datetime.utcfromtimestamp(os.path.getmtime('tgvmax.csv')).replace(tzinfo=utc) if os.path.isfile('tgvmax.csv') else datetime(1, 1, 1, tzinfo=utc)
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last_modified = datetime.utcfromtimestamp(os.path.getmtime('tgvmax.csv')).replace(tzinfo=utc) if os.path.isfile(
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'tgvmax.csv') else datetime(1, 1, 1, tzinfo=utc)
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if last_modified < modified_date:
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print("Updating tgvmax.csv…")
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@ -156,7 +155,7 @@ def parse_trains(flush: bool = False):
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db.session.commit()
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def find_routes(day: date, origin: str, destination: str):
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def find_routes(day: date, origin: str, destination: str | None):
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trains = db.session.query(Train).filter_by(day=day, tgvmax=True).all()
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trains.sort(key=lambda train: train.dep)
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@ -164,9 +163,9 @@ def find_routes(day: date, origin: str, destination: str):
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# For better results later, fetch all trains from the origin or to the destination
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# This is not exhaustive, but can be a good approximation
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queue_routes(day, origin=origin)
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if destination:
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queue_routes(day, destination=destination)
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explore = []
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per_arr_explore = {}
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valid_routes = []
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@ -180,7 +179,6 @@ def find_routes(day: date, origin: str, destination: str):
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# We hope that we have a direct train
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valid_routes.append(it)
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else:
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explore.append(it)
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per_arr_explore.setdefault(train.dest, [])
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per_arr_explore[train.dest].append(it)
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continue
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@ -201,11 +199,10 @@ def find_routes(day: date, origin: str, destination: str):
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# Goal is achieved
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valid_routes.append(new_it)
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else:
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explore.append(new_it)
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per_arr_explore.setdefault(train.dest, [])
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per_arr_explore[train.dest].append(new_it)
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return valid_routes
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return {destination: valid_routes} if destination else per_arr_explore
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def queue_route(day: date | datetime, origin: str, destination: str, verbose: bool = False):
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@ -303,7 +300,7 @@ def process_queue(number: int):
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req.expiration_time += timedelta(hours=3) # By default 5 minutes, extend it to 3 hours to be safe
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db.session.add(req)
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db.session.query(Train).filter_by(day=req.day, orig_iata=req.origin, dest_iata=req.destination)\
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db.session.query(Train).filter_by(day=req.day, orig_iata=req.origin, dest_iata=req.destination) \
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.update(dict(tgvmax=False, remaining_seats=-1))
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for proposal in data['proposals']:
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@ -345,8 +342,13 @@ def get_routes(day: date | str, origin: str, destination: str):
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if isinstance(day, str):
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day = date.fromisoformat(day)
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if destination == 'undefined':
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destination = None
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routes = find_routes(day, origin, destination)
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return [
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return {
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city: [
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[{
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'origin': tr.orig,
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'origin_iata': tr.orig_iata,
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@ -356,8 +358,9 @@ def get_routes(day: date | str, origin: str, destination: str):
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'arrival': tr.arr.isoformat(),
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'number': tr.number,
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'free_seats': tr.remaining_seats,
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} for tr in route] for route in routes
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]
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} for tr in route] for route in city_routes
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] for city, city_routes in routes.items()
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}
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if __name__ == '__main__':
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@ -78,27 +78,34 @@
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let result_elem = document.getElementById('result')
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document.getElementById('form').addEventListener('submit', () => {
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result_elem.innerHTML = 'Chargement…'
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fetch('/api/routes/' + day_elem.value + '/' + origin_elem.value + '/' + destination_elem.value + '/')
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fetch('/api/routes/' + day_elem.value + '/' + origin_elem.value + '/' + (destination_elem.value || 'undefined') + '/')
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.then(resp => resp.json())
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.then(routes => {
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console.log(routes)
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result_elem.innerHTML = ''
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let city_elem = document.createElement('ul')
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result_elem.appendChild(city_elem)
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for (let city in routes) {
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let city_routes = routes[city]
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let city_name_elem = document.createElement('li')
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city_name_elem.textContent = city + " :"
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city_elem.appendChild(city_name_elem)
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let routes_elem = document.createElement('ul')
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result_elem.appendChild(routes_elem)
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for (let route in routes) {
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route = routes[route]
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console.log(route)
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city_elem.appendChild(routes_elem)
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for (let route of city_routes) {
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let route_elem = document.createElement('li')
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routes_elem.appendChild(route_elem)
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let text = route[0].origin
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for (let train in route) {
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train = route[train]
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console.log(train)
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for (let train of route) {
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text += " (" + train.departure + ") --> (" + train.arrival + ") " + train.destination + ", "
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}
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route_elem.textContent = text
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}
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}
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})
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})
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</script>
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