import sys
import os
import logging
from flask import Flask, jsonify, send_from_directory, request
from dotenv import load_dotenv
from sqlalchemy.orm import sessionmaker, Session
from modules.driverHandler import DriverHandler
from modules.gpxInterpreter import GPXHandler
from modules.vehicleHandler import VehicleHandler
from modules.geoObjects import create_table, db_connect
from flask_cors import CORS, cross_origin

root = logging.getLogger()
root.setLevel(logging.DEBUG)

handler = logging.StreamHandler(sys.stdout)
handler.setLevel(logging.DEBUG)
formatter = logging.Formatter(
    '%(asctime)s - %(name)s - %(levelname)s - %(message)s')
handler.setFormatter(formatter)
root.addHandler(handler)

print("load environment")
load_dotenv()


print("create flask application")
app = Flask(__name__, static_folder='web/dist')
cors = CORS(app)  # allow CORS for all domains on all routes.
app.config['CORS_HEADERS'] = 'Content-Type'
app.logger.setLevel(logging.DEBUG)

print("initialize database")
engine = db_connect()
SessionFactory = sessionmaker(bind=engine)
session = SessionFactory()
create_table(engine)

print("initialize handlers")
gpxHandler = GPXHandler(session)
driverHandler = DriverHandler(session)
vehicleHandler = VehicleHandler(session)


@app.route('/')
@cross_origin()
def serve_vue_app():
    return send_from_directory(app.static_folder, 'index.html')


@app.route("/track", methods=['GET'])
@cross_origin()
def getTrack():

    if "start" in request.args and "end" in request.args or "track" in request.args:
        if "start" in request.args and "end" in request.args:
            # get tracks by filter
            start = request.args["start"]
            end = request.args["end"]
            try:
                return gpxHandler.getTracksInTime(start, request.args["end"]), 200
            except Exception as e:
                app.logger.debug(f"failed to search tracks error {
                                 e} values: start={start}, end={end}")
                return f"error {e}", 500

        elif "track" in request.args:
            # get track by id
            track = int(request.args["track"])
            try:
                return gpxHandler.getTrack(track), 200
            except Exception as e:
                app.logger.debug(f"fetching track {
                                 track} failed with error {e}")
                return f"error {e}", 500

        pass
    else:
        try:
            # gets all tracks as list
            return gpxHandler.getTracks()
        except Exception as e:
            app.logger.debug(f"fetching all tracks failed with error {e}")
            return f"error {e}", 500


@app.route("/driver", methods=['GET', 'POST'])
@cross_origin()
def handleDriverRoute():

    if request.method == "GET":
        if 'driver' in request.args:

            try:
                driver = driverHandler.getDriver(int(request.args["driver"]))
                return driver, 200
            except Exception as e:
                app.logger.debug(f"getting driver failed with error {e}")
                return "error" + " " + str(e), 500

        else:

            try:
                drivers = driverHandler.getDrivers()
                return drivers, 200
            except Exception as e:
                app.logger.debug(f"getting drivers failed with error {e}")
                return "error" + " " + str(e), 500

    elif request.method == "POST":

        # grabbing json from request
        data = request.get_json()
        app.logger.debug(f"json request payload: {data}")

        if "name" not in data:
            app.logger.debug(f"no driver name was found in request")
            return "missing name", 400

        app.logger.debug(f"driver name has passed check {data["name"]}")

        # handle creating vehicle
        try:
            app.logger.debug(f"json request name: {data["name"]}")
            driver = driverHandler.createDriver(data["name"])
            return jsonify({"name": driver.name, "id": driver.id}), 200

        except Exception as e:
            app.logger.debug(f"creating drivers failed with error {e}")
            return "error" + " " + str(e), 500


@app.route("/vehicle", methods=['GET', 'POST'])
@cross_origin()
def handleVehicleRoute():

    if request.method == "GET":
        if 'vehicle' in request.args:
            app.logger.debug(f"no vehicle id was found in request")
            vehicle = int(request.args["vehicle"])

            try:
                foundVehicle = vehicleHandler.getVehicle(vehicle)
                return foundVehicle, 200
            except Exception as e:
                app.logger.debug(f"getting vehicle {vehicle} failed with error {e}")
                return "error" + " " + str(e), 500

        else:

            try:
                foundVehicles = vehicleHandler.getVehicles()
                return foundVehicles, 200
            except Exception as e:
                app.logger.debug(f"getting all vehicles failed with error {e}")
                return "error" + " " + str(e), 500

    elif request.method == "POST":
        data = request.get_json()
        app.logger.debug(f"json request payload: {data}")

        if "name" not in data:
            return "missing name", 400

        name = data["name"]

        # handle creating vehicle
        try:
            vehicle = vehicleHandler.createVehicle(name)
            return jsonify({"id": vehicle.id, "name": vehicle.name}), 200

        except Exception as e:
            app.logger.debug(f"creating vehicle with name {name} failed with error {e}")
            return "error" + " " + str(e), 500


@app.route('/upload', methods=['POST'])
@cross_origin()
def uploadFile():
    if 'file' not in request.files:
        app.logger.debug("no file was found in clients request")
        return "no file provided", 400

    if request.args["routeName"] == '':
        app.logger.debug("client did not provide any name for uploaded route")
        return "no route name provided", 400

    file = request.files['file']
    if file.filename == '':
        app.logger.debug("filename was found empty")
        return "no file selected", 400

    try:
        app.logger.debug(f"attempting to parse file: {file.name}")
        gpxHandler.parse(file, request.args["routeName"])
        return "file stored succesfull", 200
    except Exception as e:
        app.logger.debug(f"storing gpx file failed with error {e}")
        return "error" + " " + str(e), 500


if __name__ == '__main__':
    app.run(debug=True)
    app.logger.debug("flask app started")