364 lines
8.8 KiB
Python
364 lines
8.8 KiB
Python
|
|
from flask import Flask, request, jsonify, render_template_string, redirect, render_template
|
|
from flask_sqlalchemy import SQLAlchemy
|
|
from datetime import datetime, timezone, timedelta
|
|
|
|
app = Flask(__name__)
|
|
app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///rfid.db"
|
|
app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
|
|
|
|
db = SQLAlchemy(app)
|
|
|
|
# --------------------------------------------------
|
|
# MODELS
|
|
# --------------------------------------------------
|
|
|
|
class Student(db.Model):
|
|
id = db.Column(db.Integer, primary_key=True)
|
|
uid = db.Column(db.String(64), unique=True)
|
|
name = db.Column(db.String(128))
|
|
|
|
current_room = db.Column(db.String(64))
|
|
previous_room = db.Column(db.String(64))
|
|
expected_return = db.Column(db.String(64))
|
|
expected_room = db.Column(db.String(64))
|
|
state = db.Column(db.String(32), default="OUT")
|
|
|
|
last_scan = db.Column(db.DateTime)
|
|
last_reader = db.Column(db.String(64))
|
|
|
|
|
|
class Event(db.Model):
|
|
id = db.Column(db.Integer, primary_key=True)
|
|
uid = db.Column(db.String(64))
|
|
room = db.Column(db.String(64))
|
|
event_type = db.Column(db.String(64))
|
|
timestamp = db.Column(db.DateTime)
|
|
|
|
|
|
class Room(db.Model):
|
|
id = db.Column(db.Integer, primary_key=True)
|
|
room = db.Column(db.String(64), unique=True)
|
|
count = db.Column(db.Integer, default=0)
|
|
max = db.Column(db.Integer, default=2)
|
|
bathroom = db.Column(db.Boolean, default=True)
|
|
bathroom_id = db.Column(db.String)
|
|
|
|
|
|
class Anomaly(db.Model):
|
|
id = db.Column(db.Integer, primary_key=True)
|
|
uid = db.Column(db.String(64))
|
|
type = db.Column(db.String(64))
|
|
timestamp = db.Column(db.DateTime)
|
|
|
|
|
|
# --------------------------------------------------
|
|
# UTIL
|
|
# --------------------------------------------------
|
|
|
|
COOLDOWN = 5
|
|
|
|
def now():
|
|
return datetime.now()
|
|
|
|
|
|
def recent_scan(student):
|
|
if not student.last_scan:
|
|
return False
|
|
return (now() - student.last_scan).total_seconds() < COOLDOWN
|
|
|
|
|
|
# --------------------------------------------------
|
|
# MOVEMENT ENGINE
|
|
# --------------------------------------------------
|
|
|
|
def process_scan(student, room):
|
|
timestamp = now()
|
|
|
|
# duplicate suppression
|
|
if recent_scan(student) and student.last_reader == room:
|
|
return None
|
|
|
|
student.last_scan = timestamp
|
|
student.last_reader = room
|
|
|
|
event_type = "move"
|
|
|
|
# bathroom logic
|
|
if room.startswith("bathroom"):
|
|
if student.state != "IN_BATHROOM":
|
|
student.previous_room = student.current_room
|
|
student.current_room = room
|
|
student.state = "IN_BATHROOM"
|
|
student.expected_return = student.previous_room
|
|
event_type = "bathroom_enter"
|
|
else:
|
|
student.current_room = "hallway"
|
|
student.state = "IN_HALLWAY"
|
|
event_type = "bathroom_exit"
|
|
|
|
else:
|
|
# returning from bathroom
|
|
if student.state == "IN_HALLWAY" and student.expected_return == room:
|
|
student.expected_return = None
|
|
|
|
student.previous_room = student.current_room
|
|
student.current_room = room
|
|
student.state = "IN_ROOM"
|
|
|
|
db.session.add(Event(
|
|
uid=student.uid,
|
|
room=room,
|
|
event_type=event_type,
|
|
timestamp=timestamp
|
|
))
|
|
|
|
# anomaly detection
|
|
if student.expected_return and room != student.expected_return and student.state == "IN_HALLWAY":
|
|
db.session.add(Anomaly(
|
|
uid=student.uid,
|
|
type="WRONG_RETURN",
|
|
timestamp=timestamp
|
|
))
|
|
|
|
db.session.commit()
|
|
|
|
|
|
# --------------------------------------------------
|
|
# ROUTES
|
|
# --------------------------------------------------
|
|
|
|
@app.route("/scan", methods=["POST"])
|
|
def scan():
|
|
data = request.json
|
|
action = data["action"]
|
|
print(action)
|
|
student = Student.query.filter_by(uid=data["uid"]).first()
|
|
if not student:
|
|
student = Student(uid=data["uid"], name="Unknown")
|
|
db.session.add(student)
|
|
|
|
else:
|
|
student = Student.query.filter_by(uid=data["uid"]).first()
|
|
location = data["location_id"]
|
|
room = Room.query.filter_by(room=location).first()
|
|
student.last_reader = location
|
|
student.last_scan = now()
|
|
if action == "":
|
|
if student.state == "out" and "door" in location: # Entering school
|
|
student.state = "hallway"
|
|
if student.state == "hallway" and "door" in location: # Leaving school
|
|
student.state = "out"
|
|
if student.state == "hallway" and "classroom" in location: # Entering a classroom
|
|
student.current_room = location
|
|
student.state = "in class"
|
|
room.count = room.count + 1
|
|
if student.state == "in class" and "classroom" in location: # leaving a classroom should also have time check when schedules are implemtned if time is wrong do an anomaly
|
|
student.state = "hallway"
|
|
room.count = room.count - 1
|
|
# anomaly
|
|
|
|
|
|
|
|
elif action == "bathroom" :
|
|
room.bathroom = False
|
|
student.state = "hallway"
|
|
student.expected_room = room.bathroom_id
|
|
student.expected_return = location
|
|
|
|
|
|
|
|
db.session.commit()
|
|
|
|
return jsonify({"status": "ok"})
|
|
|
|
@app.route("/lights/bathroom/<id>", methods=["GET"])
|
|
def lightsBathroom(id):
|
|
|
|
room = Room.query.filter_by(room=id).first()
|
|
bathroom = Room.query.filter_by(room=room.bathroom_id).first()
|
|
if not room:
|
|
room = Room(room=id)
|
|
db.session.add(room)
|
|
db.session.commit()
|
|
if (room.bathroom and bathroom.count < bathroom.max):
|
|
code = 202
|
|
else:
|
|
code = 200
|
|
|
|
|
|
return jsonify({"status": "ok"}), code
|
|
# --------------------------------------------------
|
|
# ADMIN DASHBOARD
|
|
# --------------------------------------------------
|
|
|
|
@app.route("/admin")
|
|
def admin():
|
|
return render_template("admin/index.html")
|
|
|
|
|
|
@app.route("/admin/students")
|
|
def admin_students():
|
|
students = Student.query.all()
|
|
return render_template(
|
|
"admin/students.html",
|
|
students=students
|
|
)
|
|
|
|
|
|
@app.route("/admin/unknown")
|
|
def admin_unknown():
|
|
|
|
students = Student.query.all()
|
|
|
|
return render_template(
|
|
"admin/unknown_cards.html",
|
|
students=students
|
|
)
|
|
|
|
|
|
@app.route("/admin/rooms")
|
|
def admin_rooms():
|
|
|
|
rooms = Room.query.all()
|
|
|
|
return render_template(
|
|
"admin/rooms.html",
|
|
rooms=rooms
|
|
)
|
|
|
|
|
|
@app.route("/admin/anomalies")
|
|
def admin_anomalies():
|
|
|
|
anomalies = Anomaly.query.order_by(
|
|
Anomaly.timestamp.desc()
|
|
).all()
|
|
|
|
return render_template(
|
|
"admin/anomalies.html",
|
|
anomalies=anomalies
|
|
)
|
|
|
|
@app.route("/admin/student/assign", methods=["POST"])
|
|
def assign_student():
|
|
|
|
uid = request.form["uid"]
|
|
name = request.form["name"]
|
|
|
|
student = Student.query.filter_by(
|
|
uid=uid
|
|
).first()
|
|
|
|
student.name = name
|
|
|
|
db.session.commit()
|
|
|
|
return admin_unknown()
|
|
|
|
@app.route("/admin/student/merge", methods=["POST"])
|
|
def merge_student():
|
|
|
|
old_uid = request.form["old_uid"]
|
|
new_uid = request.form["new_uid"]
|
|
|
|
old_student = Student.query.filter_by(
|
|
uid=old_uid
|
|
).first()
|
|
|
|
new_student = Student.query.filter_by(
|
|
uid=new_uid
|
|
).first()
|
|
|
|
if not old_student or not new_student:
|
|
return "Missing student", 404
|
|
|
|
# move all events
|
|
|
|
events = Event.query.filter_by(
|
|
uid=new_uid
|
|
).all()
|
|
|
|
for e in events:
|
|
e.uid = old_uid
|
|
|
|
db.session.delete(new_student)
|
|
|
|
db.session.commit()
|
|
|
|
return admin_unknown()
|
|
|
|
@app.route(
|
|
"/admin/room/update/<int:id>",
|
|
methods=["POST"]
|
|
)
|
|
def update_room(id):
|
|
|
|
room = Room.query.get(id)
|
|
|
|
room.max = int(
|
|
request.form["max"]
|
|
)
|
|
|
|
room.bathroom_id = request.form[
|
|
"bathroom_id"
|
|
]
|
|
|
|
room.tracks_bathroom = (
|
|
"tracks_bathroom"
|
|
in request.form
|
|
)
|
|
|
|
db.session.commit()
|
|
|
|
return admin_rooms()
|
|
# --------------------------------------------------
|
|
# TEACHER DASHBOARD
|
|
# --------------------------------------------------
|
|
|
|
TEACHER_HTML = """
|
|
<!doctype html>
|
|
<html>
|
|
<head>
|
|
<script src="https://unpkg.com/htmx.org"></script>
|
|
<script src="https://cdn.tailwindcss.com"></script>
|
|
</head>
|
|
<body class="bg-blue-950 text-white p-6">
|
|
|
|
<h1 class="text-2xl font-bold">Teacher Dashboard</h1>
|
|
|
|
<div hx-get="/teacher/class" hx-trigger="load, every 3s" hx-swap="innerHTML"></div>
|
|
|
|
</body>
|
|
</html>
|
|
"""
|
|
|
|
@app.route("/teacher")
|
|
def teacher():
|
|
return TEACHER_HTML
|
|
|
|
|
|
@app.route("/teacher/class")
|
|
def teacher_class():
|
|
students = Student.query.all()
|
|
|
|
html = ""
|
|
for s in students:
|
|
html += f"""
|
|
<div class='bg-blue-900 p-3 m-2 rounded'>
|
|
{s.name} - {s.current_room} - {s.state}
|
|
</div>
|
|
"""
|
|
|
|
return html
|
|
|
|
|
|
# --------------------------------------------------
|
|
# INIT
|
|
# --------------------------------------------------
|
|
|
|
if __name__ == "__main__":
|
|
with app.app_context():
|
|
db.create_all()
|
|
app.run(host="0.0.0.0", port=5000, debug=True)
|