#!/usr/bin/python
# -*- coding: utf-8 -*-

#from __future__ import with_statement
import cgitb
cgitb.enable()
import sys, os, cgi, json, codecs, time

#activate_this = os.path.join(os.path.dirname(__file__), 'venv/bin/activate_this.py')
#execfile(activate_this, dict(__file__=activate_this))


def main():
	"""Main CGI handler."""
	# Print JSON header
	print_header()

	# Convert form fields to regular dictionary
	form = dict((field, cgi.FieldStorage().getvalue(field)) for field in cgi.FieldStorage().keys())

	# Get input values + analyze text
	#if "complexity" in form:

	if form.get("command", "") == "complexity":
		pass
	elif form.get("command", "") == "log":
		timestamp = "\n" + time.strftime("%H:%M:%S") + "\n"
		text_to_log = timestamp + form.get("text", "") #.decode("utf-8")
		log_type =  form.get("log_type", "exe_linguists")
		if text_to_log and log_type in ["exe_linguists"]:
			log_file = "logs/%s.txt" % log_type
			with codecs.open(log_file, "a") as f:
				os.chmod(log_file, 0o664)
				f.write(str(text_to_log))
			complexity_analysis = json.dumps({"result":"Result logged.","code":202})
		else:
			complexity_analysis = json.dumps({"Error":"Wrong value for 'log_type'. Available options: exe_linguists","code":400})

	else:
		complexity_analysis = json.dumps({"Error":"Unknown or missing command. Command option(s): complexity, log","code":501})
	print_object(json.loads(complexity_analysis), form)

def print_header():
	"""Prints the JSON header."""
	print "Content-Type: application/json"
	print "Access-Control-Allow-Origin: *"
	print "Access-Control-Allow-Methods: POST, GET, OPTIONS"
	print "Access-Control-Allow-Headers: Content-Type"
	print


def print_object(obj, form):
	"""Prints an object in JSON format.
	The CGI form can contain optional parameters 'callback' and 'indent'
	which change the output format.
	"""
	callback = form.get("callback")
	if callback: print callback + "(",
	try:
		indent = int(form.get("indent"))
		print json.dumps(obj, sort_keys=True, indent=indent),
	except:
		print json.dumps(obj, separators=(",",":"))
	if callback: print ")",
	print

if __name__ == "__main__":
	main()