feat: ✨ implemented pwa capabillities and refactored lots of backend things

app.py

@@ -1,20 +1,59 @@
+from gpxInterpreter import GPXHandler
 from dotenv import load_dotenv
-from flask import Flask, send_from_directory, jsonify, session, request
+from flask import Flask, send_from_directory, jsonify, request
+from sqlalchemy                 import create_engine
+from sqlalchemy.orm             import sessionmaker
 
-print("load environment")
-load_dotenv()
+Session: Session
+app: any
 
-print("create flask application")
-app = Flask(__name__, static_folder='web/dist')
+def entry():
+    print("load environment")
+    load_dotenv()
 
+    print("create flask application")
+    app = Flask(__name__, static_folder='web/dist')
+
+    # TODO: all the sqlalchemy stuff should be moved out of app.py
+    Base = declarative_base()
+
+    def db_connect(connectionPath):
+        return create_engine(connectionPath, poolclass=NullPool)
+
+    Base.metadata.create_all(db_connect)
+    session = sessionmaker(bind=db_connect())()
+
+    # handler class for all gpx files
+    # handles parsing files and interacting with database
+    gpxHandler = GPXHandler(session)
+    
+    app.run(debug=True)
+
+# TODO: move functional parts out to api package if not handled by other classes
 @app.route('/')
 def serve_vue_app():
     return send_from_directory(app.static_folder, 'index.html')
 
+@app.route("/route", method=['GET'])
+def getRoute():
+    # TODO: will contact gpx handler to get geoJSON from 
+    return "not implemented", 500
+    
 @app.route('/upload', methods=['POST'])
-def upload_file():
-    file = request.files['file']
+def uploadFile():
+    if 'file' not in request.files:
+        return "no file provided", 400
 
+    file = request.files['file']
+    if file.filename == '':
+        return "no file selected", 400
+
+    try:
+        gpx_handler = GPXHandler(file.stream)
+        gpx_handler.parse()
+        return "file stored succesfull", 200
+    except Exception as e:
+        return "error" + " " + str(e), 500
 
 if __name__ == '__main__':
-    app.run(debug=True)
+    entry()