app.py

from flask import Flask, render_template, request
import text

app = Flask(__name__)

@app.route('/')
@app.route('/home')
def home():
    return render_template("index.html")

@app.route('/map',methods=['get'])
def map():
    starting_point = request.args.get('starting_point')
    arrival_point = request.args.get('arrival_point')

    map_graph = text.get_map_graph()

    if len(starting_point) > 1:
        start_direction = starting_point[1]
        if not start_direction in ("E","W","S","N"):
            starting_point = text.convert_text(starting_point)

    if len(arrival_point) > 1:
        finish_direction = arrival_point[1]
        if not finish_direction in ("E","W","S","N"):
            arrival_point = text.convert_text(arrival_point)
    
    if (not starting_point in map_graph or not arrival_point in map_graph):
        return render_template("not_found_error.html")

    if (starting_point == arrival_point):
        return render_template("same_point_error.html")

    route = text.map_text(starting_point,arrival_point)
    
    return render_template("service.html", route=route, route_length=len(route))

@app.route('/credit')
def credit():
    return render_template("credit.html")

if __name__ == '__main__':
    app.run(debug=True)