import subprocess
import requests
from lxml import html
from flask import Flask, request, jsonify
import json
import os

app = Flask(__name__)

def start_service():
    command = "systemctl start timelapse.service"
    try:
        # Run the command using subprocess.run()
        process = subprocess.Popen(command, shell=True)
        
    except subprocess.CalledProcessError as e:
        return {"Error": e.strip('\n')}

    command = "systemctl status timelapse.service | grep Active | cut -d ':' -f 2- | cut -b 2-"
    try:
        # Run the command using subprocess.run()
        result = subprocess.run(command, shell=True, check=True, capture_output=True, text=True)
        return {"Message": result.stdout.strip('\n')}
        
    except subprocess.CalledProcessError as e:
        return {"Error": e.strip('\n')}
        
def stop_service():
    command = "systemctl stop timelapse.service"
    try:
        # Run the command using subprocess.run()
        process = subprocess.Popen(command, shell=True)
        
    except subprocess.CalledProcessError as e:
        return {"Error": e.strip('\n')}

    command = "systemctl status timelapse.service | grep Active | cut -d ':' -f 2- | cut -b 2-"
    try:
        # Run the command using subprocess.run()
        result = subprocess.run(command, shell=True, check=True, capture_output=True, text=True)
        return {"Message": result.stdout.strip('\n')}        
    except subprocess.CalledProcessError as e:
        return {"Error": e.strip('\n')}

def service_status():
    command = "systemctl status timelapse.service | grep Active | cut -d ':' -f 2- | cut -b 2-"
    try:
        # Run the command using subprocess.run()
        result = subprocess.run(command, shell=True, check=True, capture_output=True, text=True)
        command = "systemctl status timelapse.service | grep Active | cut -d ':' -f 2 | cut -d ' ' -f 2"
        status = subprocess.run(command, shell=True, check=True, capture_output=True, text=True)
        return {"Message": result.stdout.strip('\n'), "Status": status.stdout.strip('\n')}        
    except subprocess.CalledProcessError as e:
        return {"Error": e.strip('\n')}

def read_gps_data_file():
    # Define the path to your file. This is a relative path example. Adjust it as needed.
    file_path = '{{ gps_service_directory }}/gps_data'

    if os.path.exists(file_path):
        with open(file_path, 'r') as file:        
            lines = file.readlines()
            
            # Assuming the data is in a specific format, you can parse it accordingly
            lat = lines[0].split(':')[1]
            lon = lines[1].split(':')[1]
            speed = lines[2].split(':')[1] 

            try:
                lat = float(lat.strip('\n'))
                lon = float(lon.strip('\n'))
                speed = float(speed.strip('\n')) * 0.62
            except:
                lat = 0
                lon = 0
                speed = 0

            # Round latitude and longitude to 5 decimal places at most
            lat_rounded = round(lat, 3)
            lon_rounded = round(lon, 3)
            speed_rounded = round(speed, 1)
            data = {
                "lat": lat_rounded,
                "lon": lon_rounded,
                "speed": speed_rounded
            }
    else:
        data = {
            "lat": 37.548,
            "lon": -121.961,
            "speed": 0
        }

    return jsonify(data)

@app.route('/return_gps', methods=['GET'])
def return_gps():
    return read_gps_data_file()

@app.route('/start', methods=['GET'])
def start():
    try:
        return jsonify(start_service())
    except ValueError as e:
        print(e)
        return jsonify({'error': e}), 400

@app.route('/stop', methods=['GET'])
def stop():
    try:
        return jsonify(stop_service())
    except ValueError as e:
        print(e)
        return jsonify({'error': e}), 400

@app.route('/status', methods=['GET'])
def status():
    try:
        return jsonify(service_status())
    except ValueError as e:
        print(e)
        return jsonify({'error': e}), 400

@app.route('/test', methods=['GET'])
def test():
    return jsonify({'message': 'Hello there'})

if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0', port=5000)