def post(self):
"""
Ticket payment status query API
The body should be a JSON dictionary including the following attribute(s):
- `order_id`: `int`
**return**: A JSON dictionary with values:
- `code`: `int`, always equals to 0
- `result`: `str`, `paid` or `unpaid`
"""
session = DBSession()
try:
body = request.get_json()
order_id = body.get("order_id")
current_order: Order = session.query(Order).filter(
Order.order_id == order_id).first()
if current_order.order_status == "paid":
return jsonify(code=0, result="paid")
else:
return jsonify(code=0, result="unpaid")
except:
return jsonify(code=10, error='Query error')
finally:
session.close()
def post(self):
"""
Login API
The body should be a JSON dictionary including the following attribute(s):
- `username`: `str`
- `password`: `str`
**return**: A JSON dictionary with values:
- `code`: `int`, equals to 0 if login is successful
- `token`: `str` representing JWT token, shown if `code == 0`
- `error`: `str`, shown if `code != 0`
"""
session = DBSession()
try:
body = request.get_json()
user = session.query(User).filter(
User.username == body.get('username')).first()
if user is None:
return jsonify(error='Username not found', code=401)
authorized = user.check_password(body.get('password'))
if not authorized:
return jsonify(error='Wrong password', code=401)
expires = datetime.timedelta(days=1)
access_token = create_access_token(identity=str(user.user_id),
expires_delta=expires)
return jsonify(token=access_token, code=0)
except:
return jsonify(code=10, error='Login error')
finally:
session.close()
def post(self):
"""
Sign-up API
The body should be a JSON dictionary including the following attribute(s):
- `username`: `str`
- `real_name`: `str`
- `password`: `str`
- `id_card`: `str`
- `phone_number`: `str`
- `email`: `str`
**return**: A JSON dictionary with values:
- `code`: `int`, equals to 0 if sign-up is successful
- `error`: `str`, shown if `code != 0`
"""
session = DBSession()
try:
body = request.get_json()
if session.query(User).filter(
User.username == body.get('username')).first() is not None:
return jsonify(error='Username already exists', code=406)
new_user = User(**body)
new_user.hash_password()
session.add(new_user)
session.commit()
return jsonify(code=0)
except:
session.rollback()
return jsonify(code=10,
error='Unexpected error when creating user')
finally:
session.close()
def get(self):
"""
Train information query API
**argument**:
- `dep_station`: `str`
- `arv_station`: `str`
- `DG_only`: `boolean`
**return**: A JSON dictionary with values:
- `code`: `int`, always equals to 0
- `result`: `list` of dictionaries of train information:
- `train_name`: `str`
- `first_interval`: `int`
- `last_interval`: `int`
- `dep_station`: `str`
- `dep_time`: `str`
- `arv_station`: `str`
- `arv_time`: `str`
"""
session = DBSession()
try:
dep_place = '%' + urllib.parse.unquote(
request.args.get('dep_station')) + '%'
arv_place = '%' + urllib.parse.unquote(
request.args.get('arv_station')) + '%'
dg_only = urllib.parse.unquote(
request.args.get('DG_only')).lower() == 'true'
train_info_list = fuzzy_query(dep_place, arv_place, dg_only,
session)
return jsonify(result=train_info_list, code=0)
except:
return jsonify(code=10, error='Query error')
finally:
session.close()
def get(self):
"""
Payment API
**argument**:
- `order_id`: `int`
**return**:
`Purchase succeeded` or `Purchase failed` or `Already paid`
"""
session = DBSession()
try:
order_id = request.args.get('order_id')
current_order: Order = session.query(Order).filter(
Order.order_id == order_id).first()
if current_order.order_status == "paid":
return "Already paid"
current_order.order_status = "paid"
session.commit()
session.flush()
current_ticket: Ticket = session.query(Ticket).filter(
Ticket.ticket_id == current_order.ticket_id).first()
current_ticket.available = True
session.commit()
session.flush()
return "Purchase succeeded"
except:
session.rollback()
return "Purchase failed"
finally:
session.close()
def delete(self):
"""
Train line disable API, **JWT required**
The body should be a JSON dictionary including the following attribute(s):
**return**: A JSON dictionary with values:
- `code`: `int`, equals to 0 if deletion is successful
- `error`: `str`, shown if `code != 0`
- `result`: `str`, shown if `code == 0`
"""
session = DBSession()
try:
body = request.get_json()
train_name = body.get('train_name')
train = session.query(Train).filter(
Train.train_name == train_name,
Train.available == True).first()
if not train:
return jsonify(code=12, error='停用失败，线路不存在或已停用')
interval_list = session.query(Interval).filter(
Interval.train_id == train.train_id,
Interval.available == True).all()
for interval in interval_list:
interval.available = False
train.available = False
session.commit()
return jsonify(code=0, result='线路停用成功')
except:
traceback.print_exc()
session.rollback()
return jsonify(code=12, error='停用失败，请联系运维人员')
finally:
session.close()
def get(self):
"""
District information query API
**argument**:
- `province`: `str`, can be empty
- `city`: `str`, can be empty if province is not specified
- `district`: `str`, can be empty if city is not specified
**return**: A JSON dictionary with values:
- `code`: `int`, always equals to 0
- `result`: `list` of dictionaries of provinces/cities/districts:
- `province_name`/`city_name`/`district_name`/`station_name`: `str`
"""
session = DBSession()
try:
province_name = request.args.get('province')
city_name = request.args.get('city')
district_name = request.args.get('district')
if not province_name:
province_list = session.query(Province.province_name).all()
return jsonify(code=0,
result=list(
map(lambda x: dict(zip(x.keys(), x)),
province_list)))
elif not city_name:
city_list = session.query(City.city_name).join(Province, Province.province_id == City.province_id) \
.filter(Province.province_name == province_name).all()
return jsonify(code=0,
result=list(
map(lambda x: dict(zip(x.keys(), x)),
city_list)))
elif not district_name:
district_list = session.query(District.district_name) \
.join(City, City.city_id == District.city_id) \
.join(Province, Province.province_id == City.province_id) \
.filter(Province.province_name == province_name, City.city_name == city_name).all()
return jsonify(code=0,
result=list(
map(lambda x: dict(zip(x.keys(), x)),
district_list)))
else:
station_list = session.query(Station.station_name) \
.join(District, Station.district_id == District.district_id) \
.join(City, City.city_id == District.city_id) \
.join(Province, Province.province_id == City.province_id) \
.filter(Province.province_name == province_name,
City.city_name == city_name,
District.district_name == district_name,
Station.available == True) \
.all()
return jsonify(code=0,
result=list(
map(lambda x: dict(zip(x.keys(), x)),
station_list)))
except:
return jsonify(code=10, error='Query error')
finally:
session.close()
def test():
session = DBSession()
try:
arr = session.execute(func.test_func([1, 2, 3])).first()
print(arr)
print(dict(zip(arr.keys(), arr)))
finally:
session.close()
def wrapper(*args, **kwargs):
session = DBSession()
user_id = get_jwt_identity()
is_admin = session.query(
User.is_admin).filter(User.user_id == user_id).first()
session.close()
if is_admin[0]:
return fun(*args, **kwargs)
else:
return jsonify(code=10, error='该用户没有管理员权限，无法执行管理员操作')
def get(self):
"""
Available tickets query API
**return**: A JSON dictionary with values:
- `code`: `int`, always equals to 0
- `result`: `list` of dictionaries of ticket information:
- `seat_type_id`: `int`
- `seat_type_name`: `str`
- `left_cnt`: `int`
- `price`: `float`
"""
session = DBSession()
try:
train_name = urllib.parse.unquote(request.args.get('train_name'))
first_interval = int(
urllib.parse.unquote(request.args.get('first_interval')))
last_interval = int(
urllib.parse.unquote(request.args.get('last_interval')))
interval_list = get_interval_list(train_name, session)
first_index = session.query(interval_list.c.interval_no) \
.filter(interval_list.c.interval_id == first_interval) \
.first() \
.interval_no
last_index = session.query(interval_list.c.interval_no) \
.filter(interval_list.c.interval_id == last_interval) \
.first() \
.interval_no
price_list = session.query(Price.seat_type_id, func.sum(Price.price).label('price')) \
.join(interval_list, Price.interval_id == interval_list.c.interval_id) \
.filter(interval_list.c.interval_no <= last_index, interval_list.c.interval_no >= first_index) \
.group_by(Price.seat_type_id) \
.subquery()
seats_left = session.query(Seat.seat_type_id, SeatType.name, func.count().label('left_cnt')) \
.join(SeatType, SeatType.seat_type_id == Seat.seat_type_id) \
.join(Train, Train.train_id == Seat.train_id) \
.filter(Train.train_name == train_name,
func.cast(func.substring(Seat.occupied, first_index, last_index - first_index + 1),
BIGINT) == 0) \
.group_by(Seat.seat_type_id, SeatType.name) \
.subquery()
resp = session.query(seats_left.c.seat_type_id, seats_left.c.name.label('seat_type_name'),
seats_left.c.left_cnt, price_list.c.price) \
.join(price_list, price_list.c.seat_type_id == seats_left.c.seat_type_id) \
.all()
resp = list(
sorted(map(lambda x: dict(zip(x.keys(), x)), resp),
key=lambda x: x['seat_type_id']))
return jsonify(result=resp, code=0)
except:
return jsonify(code=10, error='Query error')
finally:
session.close()
def get(self):
session = DBSession()
try:
dep_station = urllib.parse.unquote(request.args.get('dep_station'))
arv_station = urllib.parse.unquote(request.args.get('arv_station'))
dg_only = urllib.parse.unquote(
request.args.get('DG_only')).lower() == 'true'
dep_train_info = session.query(Interval.train_id, Interval.dep_station) \
.join(Station, Interval.dep_station == Station.station_id) \
.filter(Station.station_name == dep_station) \
.subquery()
arv_train_info = session.query(Interval.train_id, Interval.arv_station) \
.join(Station, Interval.arv_station == Station.station_id) \
.filter(Station.station_name == arv_station) \
.subquery()
raw_train_info = session.query(Interval.train_id, Train.train_name,
func.min(Interval.interval_id).label('first_interval'),
func.max(Interval.interval_id).label('last_interval')) \
.join(Train, Train.train_id == Interval.train_id) \
.join(dep_train_info, Interval.train_id == dep_train_info.c.train_id) \
.join(arv_train_info, Interval.train_id == arv_train_info.c.train_id) \
.filter(or_(Interval.dep_station == dep_train_info.c.dep_station,
Interval.arv_station == arv_train_info.c.arv_station)) \
.group_by(Interval.train_id, Train.train_name) \
.subquery()
dep_i = aliased(Interval, name='dep_i')
arv_i = aliased(Interval, name='arv_i')
dep_s = aliased(Station, name='dep_s')
arv_s = aliased(Station, name='arv_s')
train_info_list = session.query(raw_train_info.c.train_name,
raw_train_info.c.first_interval, raw_train_info.c.last_interval,
dep_s.station_name.label('dep_station'),
func.cast(dep_i.dep_datetime, String).label('dep_time'),
arv_s.station_name.label('arv_station'),
func.cast(arv_i.arv_datetime, String).label('arv_time')) \
.join(dep_i, dep_i.interval_id == raw_train_info.c.first_interval) \
.join(arv_i, arv_i.interval_id == raw_train_info.c.last_interval) \
.join(dep_s, dep_s.station_id == dep_i.dep_station) \
.join(arv_s, arv_s.station_id == arv_i.arv_station) \
.filter(dep_s.station_name == dep_station, arv_s.station_name == arv_station) \
.order_by(dep_i.dep_datetime) \
.all()
train_info_list = list(
filter(
lambda x: x['train_name'][0] in 'DG' if dg_only else True,
map(lambda x: dict(zip(x.keys(), x)), train_info_list)))
return jsonify(result=train_info_list, code=0)
finally:
session.close()
def patch(self):
"""
Station modification API, **JWT required**
The body should be a JSON dictionary including the following attribute(s):
- `city_name`: `str`
- `district_name`: `str`
- `station_name`: `str`
- `new_station_name`: `str`
**return**: A JSON dictionary with values
- `code`: `int`, equals to 0 if modification is successful
- `result`: `str` for success message, shown if `code == 0`
- `error`: `str`, shown if `code != 0`
"""
session = DBSession()
try:
body = request.get_json()
city_name = body.get('city_name')
district_name = body.get('district_name')
station_name = body.get('station_name')
new_station_name = body.get('new_station_name')
current_station: Station = session.query(Station).filter(
Station.station_name == station_name,
Station.available == True).first()
if not current_station:
return jsonify(code=1, error="站点不存在")
district = session.query(District).filter(
District.district_name == district_name).first()
if not district:
city = session.query(City).filter(
City.city_name == city_name).first()
new_district = District(district_name=district_name,
city_id=city.city_id)
session.add(new_district)
session.commit()
district = session.query(District).filter(
District.district_name == district_name).first()
current_station.district_id = district.district_id
if new_station_name:
current_station.station_name = new_station_name
session.commit()
return jsonify(code=0, result="修改成功")
except:
session.rollback()
return jsonify(code=1, error='修改失败')
finally:
session.close()
def get(self):
"""
Train information query API
**argument**:
- `train_name`: `str`
**return**: A JSON dictionary with values:
- `code`: `int`, always equals to 0
- `result`: `list` of dictionaries of passing station information:
- `id`: `int`
- `district`: `str`
- `station`: `str`
- `time`: `str`
"""
session = DBSession()
try:
train_name = request.args.get('train_name')
successive_train_rec = get_interval_list(train_name, session)
interval_list = session.query(successive_train_rec.c.interval_no.label('id'),
City.city_name.concat(',').concat(District.district_name).label('district'),
Station.station_name.label('station'),
func.cast(successive_train_rec.c.dep_datetime, String).label('time')) \
.join(Station, Station.station_id == successive_train_rec.c.dep_station) \
.join(District, Station.district_id == District.district_id) \
.join(City, District.city_id == City.city_id) \
.order_by(successive_train_rec.c.interval_id, Station.available == True) \
.all()
last_no = interval_list[-1].id
resp = list(map(lambda x: dict(zip(x.keys(), x)), interval_list))
last_station = session.query(func.cast(successive_train_rec.c.arv_datetime, String).label('time'),
City.city_name.concat(',').concat(District.district_name).label('district'),
Station.station_name.label('station'),
literal(last_no + 1).label('id')) \
.join(Station, Station.station_id == successive_train_rec.c.arv_station) \
.join(District, Station.district_id == District.district_id) \
.join(City, District.city_id == City.city_id) \
.filter(successive_train_rec.c.interval_no == last_no, Station.available == True) \
.first()
if last_station:
resp.append(dict(zip(last_station.keys(), last_station)))
return jsonify(result=resp, code=0)
except:
return jsonify(code=10, error='未找到线路')
finally:
session.close()
def patch(self):
"""
User information update API, **JWT required**
The body should be a JSON dictionary including the following attribute(s):
- `username`: `str`
- `password`: `str`
- `real_name`: `str`
- `email`: `str`
- `phone_number`: `str`
**return**: A JSON dictionary with values:
- `code`: `int`, equals to 0 if update is successful
- `error`: `str`, shown if `code != 0`
- `result`: `str`, shown if `code == 0`
"""
session = DBSession()
try:
body = request.get_json()
user_id = get_jwt_identity()
user = session.query(User).filter(User.user_id == user_id).first()
if user is None:
return jsonify(error='User not found', code=404)
if user.username != body.get('username'):
new_username = body.get('username')
if session.query(User).filter(
User.username == new_username).first() is not None:
return jsonify(error='Username already exists', code=406)
user.username = new_username
user.real_name = body.get('real_name')
user.email = body.get('email')
user.phone_number = body.get('phone_number')
new_password = body.get('password')
if new_password:
if 8 <= len(new_password) <= 30:
user.password = new_password
user.hash_password()
else:
session.rollback()
return jsonify(code=1, error='密码长度错误')
session.commit()
return jsonify(code=0, result='用户信息修改成功')
except:
session.rollback()
return jsonify(code=10, error='Update failed')
finally:
session.close()
def test():
session = DBSession()
try:
dep_place = '%南京%'
arv_place = '%西安%'
dg_only = True
dep_train_info = session.query(Interval.train_id, Interval.dep_station) \
.join(Station, Interval.dep_station == Station.station_id) \
.filter(Station.station_name.like(dep_place)) \
.subquery()
arv_train_info = session.query(Interval.train_id, Interval.arv_station) \
.join(Station, Interval.arv_station == Station.station_id) \
.filter(Station.station_name.like(arv_place)) \
.subquery()
raw_train_info = session.query(Interval.train_id, Train.train_name,
func.min(Interval.interval_id).label('first_interval'),
func.max(Interval.interval_id).label('last_interval')) \
.join(Train, Train.train_id == Interval.train_id) \
.join(dep_train_info, Interval.train_id == dep_train_info.c.train_id) \
.join(arv_train_info, Interval.train_id == arv_train_info.c.train_id) \
.filter(or_(Interval.dep_station == dep_train_info.c.dep_station,
Interval.arv_station == arv_train_info.c.arv_station)) \
.group_by(Interval.train_id, Train.train_name) \
.subquery()
dep_i = aliased(Interval, name='dep_i')
arv_i = aliased(Interval, name='arv_i')
dep_s = aliased(Station, name='dep_s')
arv_s = aliased(Station, name='arv_s')
train_info_list = session.query(raw_train_info.c.train_name,
raw_train_info.c.first_interval, raw_train_info.c.last_interval,
dep_s.station_name.label('dep_station'),
func.cast(dep_i.dep_datetime, String).label('dep_time'),
arv_s.station_name.label('arv_station'),
func.cast(arv_i.arv_datetime, String).label('arv_time')) \
.join(dep_i, dep_i.interval_id == raw_train_info.c.first_interval) \
.join(arv_i, arv_i.interval_id == raw_train_info.c.last_interval) \
.join(dep_s, dep_s.station_id == dep_i.dep_station) \
.join(arv_s, arv_s.station_id == arv_i.arv_station) \
.filter(dep_s.station_name.like(dep_place), arv_s.station_name.like(arv_place)) \
.order_by(dep_i.dep_datetime) \
.all()
train_info_list = list(filter(lambda x: x['train_name'][0] in 'DG' if dg_only else True,
map(lambda x: dict(zip(x.keys(), x)), train_info_list)))
return dict(result=train_info_list, code=0)
finally:
session.close()
def get(self):
"""
Transfer station query API
**argument**:
- `dep_station`: `str`
- `arv_station`: `str`
- `DG_only`: `boolean`
**return**: A JSON dictionary with values:
- `code`: `int`, always equals to 0
- `result`: `list` of dictionaries of station information:
- `stationName`: `str`
- `stationId`: `int`
"""
session = DBSession()
try:
dep_place = '%' + urllib.parse.unquote(
request.args.get('dep_station')) + '%'
arv_place = '%' + urllib.parse.unquote(
request.args.get('arv_station')) + '%'
dg_only = urllib.parse.unquote(
request.args.get('DG_only')).lower() == 'true'
resp = []
for transfer_station in QueryTransfer.transfer_list:
first_list = fuzzy_query(dep_place, transfer_station, dg_only,
session)
if first_list:
second_list = fuzzy_query(transfer_station, arv_place,
dg_only, session)
if second_list:
transfer_id = session.query(Station.station_id) \
.filter(Station.station_name == transfer_station, Station.available == True) \
.first() \
.station_id
resp.append(
dict(stationName=transfer_station,
stationId=transfer_id))
return jsonify(result=resp, code=0)
except:
return jsonify(code=10, error='Query error')
finally:
session.close()
def patch(self):
"""
Train line price information update API for administrator, **JWT required**
The body should be a JSON dictionary including the following attribute(s):
- `interval_id`: `int`
- `price`: `dict` containing:
- `seat_type_1`, `str`
- `seat_type_2`, `str`
- `seat_type_3`, `str`
- `seat_type_4`, `str`
- `seat_type_5`, `str`
- `seat_type_6`, `str`
- `seat_type_7`, `str`
**return**: A JSON dictionary with values:
- `code`: `int`, equals to 0 if update is successful
- `error`: `str`, shown if `code != 0`
- `result`: `str`, shown if `code == 0`
"""
session = DBSession()
try:
body = request.get_json()
for raw_id, raw_price in body.get('price').items():
seat_type_id = int(raw_id[-1])
obj_price: Price = session.query(Price) \
.filter(Price.interval_id == body.get('interval_id'),
Price.seat_type_id == seat_type_id) \
.first()
if obj_price:
price = float(raw_price)
if price > 0:
obj_price.price = price
else:
raise Exception('')
session.commit()
return jsonify(code=0, result='修改成功')
except:
session.rollback()
traceback.print_exc()
return jsonify(code=10, error='修改失败')
finally:
session.close()
def get(self):
"""
User information query API, **JWT required**
**return**: A JSON dictionary with values:
- `code`: `int`, equals to 0 if query is successful
- `result`: `dict` containing user information, shown if `code == 0`
- `error`: `str`, shown if `code != 0`
"""
session = DBSession()
try:
user_id = get_jwt_identity()
user = session.query(User).filter(User.user_id == user_id).first()
if user is None:
return jsonify(error='User not found', code=404)
return jsonify(result=user.to_dict(), code=0)
except:
return jsonify(code=10, error='User information query error')
finally:
session.close()
def get(self):
"""
User existence check API (check by username)
**argument**:
- `username`: `str`
**return**: A JSON dictionary with values:
- `code`: `int`, always equals to 0
- `result`: `boolean` indicating if the user exists
"""
session = DBSession()
try:
username = request.args.get('username')
user = session.query(User).filter(
User.username == username).first()
return jsonify(result=(user is None), code=0)
except:
return jsonify(code=10, error='Query error')
finally:
session.close()
def get(self):
"""
Geographic position query API
**argument**:
- `geo_name`: `str`
**return**: A JSON dictionary with values:
- `code`: `int`, always equals to 0
- `result`: `list` of dictionaries of position information:
- `province`: `str`
- `city`: `str`
- `district`: `str`
- `station`: `str`
"""
session = DBSession()
try:
geo_name = request.args.get('geo_name')
stations = session.query(Province.province_name.label('province'),
City.city_name.label('city'),
District.district_name.label('district'),
Station.station_name.label('station')) \
.join(District, Station.district_id == District.district_id) \
.join(City, District.city_id == City.city_id) \
.join(Province, Province.province_id == City.province_id) \
.filter(or_(Station.station_name.like('%' + geo_name + '%'),
District.district_name.like('%' + geo_name + '%'),
City.city_name.like('%' + geo_name + '%'),
Province.province_name.like('%' + geo_name + '%')),
Station.available == True) \
.all()
resp = [dict(zip(station.keys(), station)) for station in stations]
return jsonify(result=resp, code=0)
except:
return jsonify(code=10, error='Query error')
finally:
session.close()
def delete(self):
"""
Station deletion API, **JWT required**
The body should be a JSON dictionary including the following attribute(s):
- `station_name`: `str`
**return**: A JSON dictionary with values
- `code`: `int`, equals to 0 if deletion is successful
- `result`: `str` for success message, shown if `code == 0`
- `error`: `str`, shown if `code != 0`
"""
session = DBSession()
try:
body = request.get_json()
station_name = body.get('station_name')
# Find if the station exists
station: Station = session.query(Station).filter(
Station.station_name == station_name,
Station.available == True).first()
if not station:
return jsonify(code=1, error="站点不存在或已删除")
# Check if the station has train passing
interval = session.query(Interval).filter(
or_(Interval.dep_station == station.station_id,
Interval.arv_station == station.station_id)).first()
if interval:
return jsonify(code=2, error="站点仍有火车经过")
station.available = False
session.commit()
return jsonify(code=0, result="删除成功")
except:
session.rollback()
return jsonify(code=10, error='操作失败，请联系运维人员')
finally:
session.close()
def post(self):
"""
Station addition API, **JWT required**
The body should be a JSON dictionary including the following attribute(s):
- `province_name`: `str`
- `city_name`: `str`
- `district_name`: `str`
- `station_name`: `str`
**return**: A JSON dictionary with values
- `code`: `int`, equals to 0 if addition is successful
- `result`: `str` for success message, shown if `code == 0`
- `error`: `str`, shown if `code != 0`
"""
session = DBSession()
try:
body = request.get_json()
province_name = body.get('province_name')
city_name = body.get('city_name')
district_name = body.get('district_name')
station_name = body.get('station_name')
station = session.query(Station) \
.filter(Station.station_name == station_name) \
.first()
exist_flag = False
if station:
if station.available:
return jsonify(code=1, error="站点已存在！")
else:
district = session.query(District) \
.filter(District.district_id == station.district_id) \
.first()
if district.district_name == district_name:
station.available = True
session.commit()
return jsonify(code=0,
result='站点{}添加成功'.format(station_name))
exist_flag = True
province = session.query(Province).filter(
Province.province_name == province_name).first()
if province is None:
new_province = Province(province_name=province_name)
session.add(new_province)
session.commit()
province = session.query(Province).filter(
Province.province_name == province_name).first()
city = session.query(City).filter(
City.city_name == city_name).first()
if city is None:
new_city = City(city_name=city_name,
province_id=province.province_id)
session.add(new_city)
session.commit()
city = session.query(City).filter(
City.city_name == city_name).first()
district = session.query(District).filter(
District.district_name == district_name).first()
if district is None:
new_district = District(district_name=district_name,
city_id=city.city_id)
session.add(new_district)
session.commit()
district = session.query(District).filter(
District.district_name == district_name).first()
if exist_flag:
station.district_id = district.district_id
station.available = True
else:
station = Station(station_name=station_name,
district_id=district.district_id)
session.add(station)
session.commit()
return jsonify(code=0, result='站点{}添加成功'.format(station_name))
except:
traceback.print_exc()
session.rollback()
return jsonify(code=1, error='添加失败，站点已存在或地址信息有误。')
finally:
session.close()
def post(self):
"""
Train order API, **JWT required**
**return**: A JSON dictionary with values:
- `code`: `int`, equals to 0 if order is successful
- `result`: `dict` with values, shown if `code == 0`:
- `order_id`: `int`
- `error`: `str`, shown if `code != 0`
"""
session = DBSession()
try:
user_id = get_jwt_identity()
body = request.get_json()
first_interval = int(body.get('first_interval'))
last_interval = int(body.get('last_interval'))
seat_class = body.get('seat_class')
train_name = body.get('train_name')
# successive_train_rec = get_interval_list(train_name, session)
interval_list = get_interval_list(train_name, session)
# interval_list = session.query(successive_train_rec.c.interval_id) \
# .order_by(successive_train_rec.c.interval_id) \
# .all()
first_index = session.query(interval_list.c.interval_no) \
.filter(interval_list.c.interval_id == first_interval) \
.first() \
.interval_no
last_index = session.query(interval_list.c.interval_no) \
.filter(interval_list.c.interval_id == last_interval) \
.first() \
.interval_no
seat = session.query(Seat) \
.join(Train, Train.train_id == Seat.train_id) \
.filter(Train.train_name == train_name,
Seat.seat_type_id == seat_class,
func.cast(func.substring(Seat.occupied, first_index, last_index - first_index + 1),
BIGINT) == 0) \
.first()
if seat is None:
return jsonify(code=404, error='当前区间无余票！')
seat.occupied = bin(
int(seat.occupied, 2)
| int('1' * (last_index - first_index + 1), 2) <<
(40 - last_index))[2:].zfill(40)
new_ticket = Ticket(first_interval=first_interval,
last_interval=last_interval,
seat_id=seat.seat_id,
available=False)
session.add(new_ticket)
session.commit()
session.flush()
price = session.query(func.sum(Price.price).label('price')) \
.join(interval_list, Price.interval_id == interval_list.c.interval_id) \
.filter(Price.seat_type_id == seat_class, interval_list.c.interval_no <= last_index,
interval_list.c.interval_no >= first_index) \
.first()
new_order = Order(order_status='unpaid',
user_id=user_id,
ticket_id=new_ticket.ticket_id,
price=price)
session.add(new_order)
session.commit()
session.flush()
return jsonify(code=0, result={'order_id': new_order.order_id})
except:
session.rollback()
return jsonify(code=10, error='订票失败')
finally:
session.close()
def post(self):
"""
Train line creation API, **JWT required**
The body should be a JSON dictionary including the following attribute(s):
- `train_name`: `str`
- `line`: `list` of dictionaries containing:
- `dep_station`: `str`
- `arv_station`: `str`
- `dep_time`: `str`
- `arv_time`: `str`
- `price`: `dict` containing at least one of:
- `seat_type_1`, `str`
- `seat_type_2`, `str`
- `seat_type_3`, `str`
- `seat_type_4`, `str`
- `seat_type_5`, `str`
- `seat_type_6`, `str`
- `seat_type_7`, `str`
**return**: A JSON dictionary with values:
- `code`: `int`, equals to 0 if creation is successful
- `error`: `str`, shown if `code != 0`
- `result`: `str`, shown if `code == 0`
"""
session = DBSession()
try:
body = request.get_json()
train_name = body.get('train_name')
if not train_name:
return jsonify(code=11, error='火车名为空')
train: Train = session.query(Train).filter(
Train.train_name == train_name).first()
if train:
return jsonify(code=11, error='火车名已存在！')
new_train = Train(train_name=train_name)
session.add(new_train)
session.commit()
session.flush()
train_id = new_train.train_id
interval_id_list = []
interval_list = body.get('line')
seat_type_list = []
for interval_info in interval_list:
dep_station = session.query(Station.station_id) \
.filter(Station.station_name == interval_info['dep_station'], Station.available == True) \
.first() \
.station_id
arv_station = session.query(Station.station_id) \
.filter(Station.station_name == interval_info['arv_station'], Station.available == True) \
.first() \
.station_id
dep_datetime = None
arv_datetime = None
if 'dep_time' in interval_info.keys(
) and interval_info['dep_time']:
dep_datetime = time(
*list(map(int, interval_info['dep_time'].split(':'))))
if 'arv_time' in interval_info.keys(
) and interval_info['arv_time']:
arv_datetime = time(
*list(map(int, interval_info['arv_time'].split(':'))))
new_interval = Interval(train_id=train_id,
dep_station=dep_station,
arv_station=arv_station,
dep_datetime=dep_datetime,
arv_datetime=arv_datetime)
session.add(new_interval)
session.commit()
session.flush()
interval_id = new_interval.interval_id
interval_id_list.append(interval_id)
price_dict = interval_info['price']
for k, v in price_dict.items():
seat_type_id = int(k[-1])
if seat_type_id not in seat_type_list:
seat_type_list.append(seat_type_id)
if not v:
continue
seat_price = max(0.01, abs(float(v)))
new_price = Price(interval_id=interval_id,
seat_type_id=seat_type_id,
price=seat_price)
session.add(new_price)
session.commit()
session.execute(func.add_seats(seat_type_list, train_id))
for index, interval_id in enumerate(interval_id_list):
interval = session.query(Interval).filter(
Interval.interval_id == interval_id).first()
interval.next_id = interval_id_list[
index + 1] if index < len(interval_id_list) - 1 else None
interval.prev_id = interval_id_list[index -
1] if index > 0 else None
session.commit()
return jsonify(code=0, result='线路添加成功')
except:
traceback.print_exc()
session.rollback()
return jsonify(code=12, error='添加失败，请检查输入是否合法')
finally:
session.close()
def delete(self):
"""
Ticket refund API, **JWT required**
**return**: A JSON dictionary with values:
- `code`: `int`, equals to 0 if deletion is successful
- `result`: `str`, shown if `code == 0`
- `error`: `str`, shown if `code != 0`
"""
session = DBSession()
try:
user_id = get_jwt_identity()
body = request.get_json()
order_id = body.get('order_id')
# The delete function is to set the order status "cancelled", set ticket available false,
# and released the occupied seat.
current_order: Order = session.query(Order).filter(
Order.order_id == order_id).first()
# print(current_order.user_id, user_id)
if int(user_id) != int(current_order.user_id):
return jsonify(code=100, error='非法退票操作！')
current_order.order_status = "cancelled"
session.commit()
session.flush()
current_ticket: Ticket = session.query(Ticket).filter(
Ticket.ticket_id == current_order.ticket_id).first()
current_ticket.available = False
session.commit()
session.flush()
first_interval = current_ticket.first_interval
last_interval = current_ticket.last_interval
current_seat: Seat = session.query(Seat).filter(
Seat.seat_id == current_ticket.seat_id).first()
train_id = session.query(Train.train_id).join(
Interval, Interval.train_id == Train.train_id).filter(
Interval.interval_id == first_interval,
Interval.available == True,
Train.available == True).first()
# Here to release the seat
train_name = session.query(Train.train_name).filter(
Train.train_id == train_id,
Train.available == True).first().train_name
interval_list = get_interval_list(train_name, session)
# successive_train_rec = get_interval_list(train_name, session)
# interval_list = session.query(successive_train_rec.c.interval_id) \
# .order_by(successive_train_rec.c.interval_id) \
# .all()
first_index = session.query(interval_list.c.interval_no) \
.filter(interval_list.c.interval_id == first_interval) \
.first() \
.interval_no
last_index = session.query(interval_list.c.interval_no) \
.filter(interval_list.c.interval_id == last_interval) \
.first() \
.interval_no
current_seat.occupied = bin(
int(current_seat.occupied, 2)
& int('0' * (last_index - first_index + 1), 2) <<
(40 - last_index))[2:].zfill(40)
session.commit()
session.flush()
return jsonify(code=0, result="操作成功，票已失效")
except:
session.rollback()
return jsonify(code=10, error='操作失败，请联系管理员')
finally:
session.close()
def get(self):
"""
Purchased tickets query API, **JWT required**
**return**: A JSON dictionary with values:
- `code`: `int`, always equals to 0
- `result`: `list` of dictionaries of ticket information:
- `orderId`: `int`
- `price`: `str`
- `orderStatus`: `str`
- `ticketId`: `str`
- `name`: `str`
- `idCard`: `str`
- `trainName`: `str`
- `carriageNumber`: `str`
- `seat`: `str`
- `seatNumber`: `str`
- `seatClass`: `str`
- `departStation`: `str`
- `departStationEnglish`: `str`
- `arrivalStation`: `str`
- `arrivalStationEnglish`: `str`
- `time`: `str`
- `realOrderId`: `str`
- `checkEnter`: `str`
"""
session = DBSession()
try:
user_id = get_jwt_identity()
dep_i = aliased(Interval, name='dep_i')
arv_i = aliased(Interval, name='arv_i')
dep_s = aliased(Station, name='dep_s')
arv_s = aliased(Station, name='arv_s')
tickets = list(
map(
lambda x: dict(zip(x.keys(), x)),
session.query(
Order.order_id.label('orderId'), Order.price,
Order.order_status.label('orderStatus'),
Ticket.ticket_id.label('ticketId'),
User.real_name.label('name'),
User.id_card.label('idCard'),
Train.train_name.label('trainName'),
Seat.carriage_number.label('carriageNumber'),
Seat.seat_number.label('seatNumber'),
SeatType.name.label('seatClass'),
dep_s.station_name.label('departStation'),
arv_s.station_name.label('arrivalStation'),
func.cast(
dep_i.dep_datetime, String).label('time')).join(
Ticket,
Ticket.ticket_id == Order.ticket_id).join(
User, User.user_id == Order.user_id).
join(Seat, Seat.seat_id == Ticket.seat_id).join(
SeatType,
SeatType.seat_type_id == Seat.seat_type_id).join(
dep_i,
dep_i.interval_id == Ticket.first_interval).join(
arv_i,
arv_i.interval_id == Ticket.last_interval).
join(Train,
Train.train_id == dep_i.train_id).join(
dep_s,
dep_s.station_id == dep_i.dep_station).join(
arv_s,
arv_s.station_id == arv_i.arv_station).filter(
Order.user_id == user_id,
Train.available == True,
dep_s.available == True,
arv_s.available == True,
dep_i.available == True,
arv_i.available == True).order_by(
desc(Order.order_timestamp)).all()))
for t in tickets:
t['departStationEnglish'] = ''.join(
map(lambda x: x[0].upper() + x[1:],
lazy_pinyin(t['departStation'], style=Style.NORMAL)))
t['arrivalStationEnglish'] = ''.join(
map(lambda x: x[0].upper() + x[1:],
lazy_pinyin(t['arrivalStation'], style=Style.NORMAL)))
t['realOrderId'] = t['orderId']
t['orderId'] = str(t['orderId']).zfill(21)
t['ticketId'] = 'Z' + str(t['ticketId']).zfill(9)
t['price'] = '￥{:.2f} 南方铁路售'.format(t['price'])
t['checkEnter'] = "9¾"
if t['seatNumber'].endswith('铺'):
t['seat'] = '{:02d}车{}'.format(
t['carriageNumber'], t['seatNumber'][:-2].zfill(3))
else:
t['seat'] = '{:02d}车{}座'.format(t['carriageNumber'],
t['seatNumber'].zfill(3))
# # 现在这个API是假的
# ticket = [{
# "trainName": 'G456', [x]
# "checkEnter": 'A12', [ ] # 不要了
# "seat": '01车01F座', [x]
# "seatClass": '二等座', [x]
# "departStation": '镇江', [x]
# "departStationEnglish": 'Zhenjiang', [x]
# "arrivalStation": '南京', [x]
# "arrivalStationEnglish": 'Nanjing', [x]
# "price": '￥29.5 南方铁路售', [x]
# "time": '2020年4月18日 07:14', [x]
# "name": '石文轩', [x]
# "idCard": '3211011999****6317', [x]
# "orderId": '123456789098765432101', [x]
# "ticketId": 'Z123456789' [x]
# }] * 4
return jsonify(code=0, ticket=tickets)
except:
return jsonify(code=10, error='Query error')
finally:
session.close()
def get(self):
"""
Train line information query API for administrator, **JWT required**
**argument**:
- `train_name`: `str`
**return**: A JSON dictionary with values:
- `code`: `int`, equals to 0 if query is successful
- `error`: `str`, shown if `code != 0`
- `result`: `dict` containing:
- `available`: `boolean`
- `line`: `list` of dictionaries of interval information:
- `interval_id`: `int`
- `interval_no`： `int`
- `train_name`: `str`
- `dep_station`: `str`
- `arv_station`: `str`
- `dep_datetime`: `str`
- `arv_datetime`: `str`
- `price`: `dict` containing:
- `seat_type_1`, `str`
- `seat_type_2`, `str`
- `seat_type_3`, `str`
- `seat_type_4`, `str`
- `seat_type_5`, `str`
- `seat_type_6`, `str`
- `seat_type_7`, `str`
"""
session = DBSession()
try:
train_name = request.args.get('train_name')
interval_list = get_interval_list(train_name, session, True)
available = session.query(Train.available).filter(
Train.train_name == train_name).first().available
dep_s = aliased(Station, name='dep_s')
arv_s = aliased(Station, name='arv_s')
res_list = session.query(interval_list.c.interval_id, interval_list.c.interval_no, Train.train_name,
dep_s.station_name.label('dep_station'), arv_s.station_name.label('arv_station'),
func.cast(interval_list.c.dep_datetime, String).label('dep_datetime'),
func.cast(interval_list.c.arv_datetime, String).label('arv_datetime'), ) \
.join(Train, Train.train_id == interval_list.c.train_id) \
.join(dep_s, dep_s.station_id == interval_list.c.dep_station) \
.join(arv_s, arv_s.station_id == interval_list.c.arv_station) \
.order_by(interval_list.c.interval_no) \
.all()
res_list = list(map(lambda x: dict(zip(x.keys(), x)), res_list))
for i in res_list:
i['price'] = dict(
zip(map(lambda x: 'seat_type_' + str(x), range(1, 8)),
['x'] * 7))
price_list = session.query(Price).filter(
Price.interval_id == i['interval_id']).all()
i['price'].update(
dict(
map(
lambda x: ('seat_type_{}'.format(x.seat_type_id),
'{:.2f}'.format(x.price)), price_list)))
return jsonify(code=0,
result={
'line': res_list,
'available': available
})
except:
traceback.print_exc()
return jsonify(code=10, error='Query error')
finally:
session.close()