launch.py

'''
Combined App
start date: 1.1.19
author: Nikhil VJ
Created for work on TSRTC Hyderabad bus routes
'''

print('\nPayanam')
print('Starting up the program, loading dependencies, please wait...\n\n')

import datetime
import json, xmltodict
import os, sys, webbrowser, signal # signal: for catching Ctrl+C and exiting gracefully.
import shutil # for copying etc
import time, datetime
from collections import OrderedDict
from math import sin, cos, sqrt, atan2, radians
import zipfile, zlib
import uuid

import pandas as pd
import tornado.ioloop, tornado.web
from tornado import escape

# for fuzzy search
import jellyfish as jf

import requests, platform # used to log user stats
requests.packages.urllib3.disable_warnings() # suppress warning messages like "InsecureRequestWarning: Unverified HTTPS request is being made." from https://stackoverflow.com/a/44850849/4355695

import gtfs_common as gtfsC

# setting constants
root = os.path.dirname(__file__) # needed for tornado and all other paths, prog should work even if called from other working directory.
startPage = 'index.html' # change the starting page as per needs.

routesFolder = os.path.join(root,'routes')
lockFolder = os.path.join(root,'locked-routes')
timeFolder = os.path.join(root,'timings')
logFolder = os.path.join(root,'logs')
configFolder = os.path.join(root,'config')
reportsFolder = os.path.join(root,'reports')
databankFolder = os.path.join(root,'databank')
backupsFolder = os.path.join(root,'backups')
uploadFolder = os.path.join(root,'uploads')

configFile = 'config.json'
accessFile = 'access.csv'
accessRanking = ["VIEW","MAPPER","DATAENTRY","REVIEW","ADMIN"]

# paths were you must not tread.. see "MyStaticFileHandler" class in apy.py
forbiddenPaths = []
forbiddenEndings = ['.py','access.csv']
debugMode = False # using this flag at various places to do or not do things based on whether we're in development or production

try:
    configRules = json.load(open(os.path.join(configFolder,configFile)), object_pairs_hook=OrderedDict)
    # hey gotta load this is as OrderedDict
except FileNotFoundError:
    configRules = {}

# create folders if they don't exist
for folder in [routesFolder, lockFolder, logFolder, configFolder, reportsFolder, databankFolder, backupsFolder, uploadFolder]:
    os.makedirs(folder, exist_ok=True)

exec(open(os.path.join(root,"functions.py"), encoding='utf8').read())
exec(open(os.path.join(root,"api.py"), encoding='utf8').read())

logmessage('Loaded dependencies, starting program.')

def make_app():
    return tornado.web.Application([
        (r"/API/loadJsonsList", loadJsonsList),
        (r"/API/loadJson", loadJson),
        (r"/API/GPXUpload", GPXUpload),
        (r"/API/routeSuggest", routeSuggest),
        (r"/API/routeLock", routeLock),
        (r"/API/bulkSuggest", bulkSuggest),
        (r"/API/keyCheck", keyCheck),
        # (r"/API/catchJumpers", catchJumpers),
        (r"/API/routeEntry", routeEntry),
        (r"/API/reconcile", reconcile),
        (r"/API/getRouteLine", getRouteLine),
        (r"/API/removeAutoMappingAPI", removeAutoMappingAPI),
        (r"/API/timings", timings),
        (r"/API/unLock", unLock),
        (r"/API/depotsList", depotsList),
        (r"/API/importGTFS", importGTFS),
        #(r"/API/allStops", allStops),
        # (r"/(.*)", tornado.web.StaticFileHandler, {"path": root, "default_filename": startPage})
        (r"/(.*)", MyStaticFileHandler, {"path": root, "default_filename": startPage})
    ])


# for catching Ctrl+C and exiting gracefully. From https://nattster.wordpress.com/2013/06/05/catch-kill-signal-in-python/
def signal_term_handler(signal, frame):
    # to do: Make this work in windows, ra!
    logmessage('\nClosing Program.\nThank you for using this program. Feedback : nikhil.js [at] gmail.com')
    sys.exit(0)

if __name__ == "__main__":
    signal.signal(signal.SIGINT, signal_term_handler)
    app = make_app()
    portnum = 5050
    while True: # loop to increment the port number till we find one that isn't occupied
        try:
            port = int(os.environ.get("PORT", portnum))
            app.listen(port)
            break
        except OSError:
            portnum += 1
            if portnum > 9999: 
                logmessage('Can\'t launch as no port number from 5000 through 9999 is free.')
                sys.exit()

    thisURL = "http://localhost:" + str(port)
    if configRules.get('openBrowser') : 
        webbrowser.open(thisURL)
        logmessage("\n\nOpen {} in your Web Browser if you don't see it opening automatically in 5 seconds.\n\nNote: If this is through docker, then it's not going to auto-open in browser, don't wait.".format(thisURL))
    else:
        logmessage(f"\n\nOpen {thisURL} in your Web Browser")
    
    tornado.ioloop.IOLoop.current().start()