map_app.py

from flask import Flask, render_template
import os
from datetime import datetime
import requests


app = Flask(__name__)

# Enter your own bing maps api key
bing_maps_api_key = 'Au6Am6m_YLRyDRC4vQ94eTWBf4hqsGbG-e6GIeVcuoEOj9RVyGboeEdcy1lzCphk'

@app.route('/')
def map_page():
    # Initialize empty lists to store data
    violation_number = []
    velocity = []
    coordinates = []
    date = []
    time = []
    limit = []

    # Specify the file path on the flash drive
    # flash_drive_path = 'D:\\velocity_violations.txt'
    flash_drive_path = 'D:\\velocity_violations.txt'
    
    # Check if the file exists before trying to open it
    if os.path.exists(flash_drive_path):
        # Read coordinates, violation information, date, time, and velocity from the velocity violation file
        print('Pulling data from velocity_violations.txt directly from flash drive...')
        with open(flash_drive_path, 'r') as file:
            for l in file:
                line = l.strip()

                # Extract violation number from the line
                violation_start_index = line.find('#') + 1
                violation_end_index = line.find(':')
                violation_number.append(int(line[violation_start_index:violation_end_index]))

                # Extract coordinates from the line
                coord_start_ind = line.find('(') + 1
                coord_end_ind = line.find(')') 
                coordinate = line[coord_start_ind:coord_end_ind]
                coordinate = coordinate.replace(" ", "")
                coordinates.append(coordinate)

                # Extract date information from the line and format it
                d_start_index = line.find(':') + 2
                d_end_index = d_start_index + 10
                date_str = line[d_start_index:d_end_index]
                date_obj = datetime.strptime(date_str, '%Y-%m-%d')
                formatted_date = date_obj.strftime('%m/%d/%y')
                date.append(formatted_date)

                t_start_index = d_end_index + 1
                t_end_index = line.find('.')
                time_str = line[t_start_index:t_end_index]
                time_obj = datetime.strptime(time_str, '%H:%M:%S')
                formatted_time = time_obj.strftime('%I:%M:%S %p')
                time.append(formatted_time)

                # Extract velocity information from the line
                velocity_start_index = coord_end_ind + 3
                velocity_end_index = line.find(' m/s')
                mps_velocity = float(line[velocity_start_index:velocity_end_index])

                # Convert m/s velocity to miles per hour
                miph = mps_velocity * 60 * 60 / 1609.34
                miph = round(miph, 2)
                velocity.append(miph)

                # Use the Bing Maps API to get the speed limit
                speed_limit = get_speed_limit(coordinate)
                if speed_limit:
                    # Compare the recorded speed with the speed limit
                    if miph > speed_limit:
                        print(f"Speed limit exceeded: {miph} MPH in a {speed_limit} MPH zone")
                    limit.append(speed_limit)
                else:
                    limit.append(0)

                        

        # Pass data to the template for rendering
        return render_template('map.html', coordinates=coordinates, violation_number=violation_number, date=date, time=time, velocity=velocity, limit=limit)
    else:
        return "File not found on the specified flash drive path."
    
def get_speed_limit(coordinate):
    # Use the Bing Maps Roads API to get the speed limit for the given coordinate
    base_url = 'https://dev.virtualearth.net/REST/v1/Routes/SnapToRoad'
    params = {
        'key': bing_maps_api_key,
        'points': coordinate,
        'includeSpeedLimit': 'true',
        'speedUnit': 'MPH',
    }

    response = requests.get(base_url, params=params)
    data = response.json()

    print(data)

    if 'resourceSets' in data and data['resourceSets'] and 'resources' in data['resourceSets'][0]:
        # Extract speed limit from the response (assuming the first resource is the most relevant)
        speed_limit = data['resourceSets'][0]['resources'][0]['snappedPoints'][0]['speedLimit']
        print("Speed limit: ", speed_limit)
        return speed_limit
    else:
        # If speed limit information is not available, return None
        return None
    


if __name__ == '__main__':
    # Run the Flask application in debug mode
    app.run(debug=True)