import json, requests
from flask import Flask, request, session, render_template, redirect, url_for, Response, send_file
from flask_session import Session

from io import BytesIO

import logging
logger = logging.getLogger()

#logger.setLevel('DEBUG')
logger.setLevel('INFO')
#logger.setLevel('WARN')
#logger.setLevel('ERROR')
#logger.setLevel('CRITICAL')

from EagleEyev3 import *
from settings import config

logging.info(f"Using EagleEyev3 version {EagleEyev3.__version__}")


app = Flask(__name__)

SESSION_TYPE = 'filesystem'
app.config.from_object(__name__)
Session(app)

@app.route('/')
def index():

    if 'een' in session:
        een = session['een']
    else:
        een = EagleEyev3(config)
        session['een'] = een

    # using current_user as a proxy for an established valid session
    if een.access_token == None:
        base_url            = "https://auth.eagleeyenetworks.com/oauth2/authorize"
        path_url            = f"?client_id={een.client_id}&response_type=code&scope=vms.all&redirect_uri={een.redirect_uri}"
        return redirect(f"{base_url}{path_url}")
    
    # call this to check if session is actually valid
    check = een.get_current_user()
    if 'success' not in check or check['success'] == False:
        base_url            = "https://auth.eagleeyenetworks.com/oauth2/authorize"
        path_url            = f"?client_id={een.client_id}&response_type=code&scope=vms.all&redirect_uri={een.redirect_uri}"
        return redirect(f"{base_url}{path_url}")
    else:
        logging.info(f"{check['success']} - check get_current_user {een.current_user['email']} {een.access_token}")


    #logging.info(een.cameras)


    # this call could get expensive
    een.get_list_of_cameras()

    #logging.info(een.cameras)

    values = {
        "current_user": een.current_user,
        "cameras":      een.cameras
    }

    return render_template('index.html', template_values=values)


@app.route('/login_callback')
def login_callback():
    # This is getting the ?code= querystring value from the HTTP request.
    code = request.args.get('code')

    if 'een' in session:
        een = session['een']
    else:
        een = EagleEyev3(config)


    if (code):
        # use the include code parameter to complete login process
        oauth_object = een.login_tokens(code)
    

    return redirect(url_for('index'))


@app.route('/logout')
def logout():
    if 'een' in session:
        een = session['een']
        een.logout()

    session.pop('een')    

    return redirect(url_for('index'))


@app.route('/cameras')
def cameras():
    if 'een' in session:
        een = session['een']
    else:
        een = EagleEyev3(config)    

    een.get_list_of_cameras()

    values = {
        "current_user": een.current_user,
        "cameras":      een.cameras
    }

    return render_template('cameras_partial.html', template_values=values)


@app.route('/camera/<esn>/live_preview')
def camera_live_preivew(esn=None):
    if 'een' in session:
        een = session['een']
    else:
        een = EagleEyev3(config)    

    camera = een.get_camera_by_id(esn)
    res = camera.get_live_preview()

    if res:
        return send_file(BytesIO(res.content), mimetype='image/jpeg')
    else:
        return send_file('static/placeholder.png')


@app.route('/camera/<esn>')
def camera_detail(esn=None):
    if 'een' in session:
        een = session['een']
    else:
        een = EagleEyev3(config)    

    camera = een.get_camera_by_id(esn)
    camera.get_list_of_events(end_timestamp=een.time_before(ts=een.time_now(), hours=0), \
                            start_timestamp=een.time_before(ts=een.time_now(), hours=6) )

    values = {
        "current_user": een.current_user,
        "camera":       camera,
        "events":       camera.events['status']
    }

    return render_template('camera_detail_partial.html', template_values=values) 







if __name__ == '__main__':
    app.run(host=een.server_host, port=een.server_port)