Grammalecte  Check-in [0c8e86b8c7]

 #!/usr/bin/env python3

"""
Grammalecte server: grammar checker
"""

import sys
import argparse
import json
import traceback
import time

from grammalecte.bottle import Bottle, run, request, response #, template, static_file

import grammalecte
import grammalecte.text as txt
from grammalecte.graphspell.echo import echo


HOMEPAGE = """

"""


TESTPAGE = False


def genUserId ():
    "generator: returns id as string for users"
    i = 0
    while True:
        yield str(i)
        i += 1


app = Bottle()

# GET
@app.route("/")
def mainPage ():
    "page for testing purpose"
    if TESTPAGE:
        return HOMEPAGE
        #return template("main", {})
    return SADLIFEOFAMACHINE

@app.route("/get_options/fr")
def listOptions ():
    "returns grammar options in a text JSON format"
    sUserId = request.cookies.user_id
    dOptions = dUser[sUserId]["gc_options"]  if sUserId and sUserId in dUser  else dGCOptions
    return '{ "values": ' + json.dumps(dOptions) + ', "labels": ' + json.dumps(gce.getOptionsLabels("fr"), ensure_ascii=False) + ' }'


# POST
@app.route("/gc_text/fr", method="POST")
def gcText ():
    "parse text and returns errors in a JSON text format"
    #if len(lang) != 2 or lang != "fr":
    #    abort(404, "No grammar checker available for lang “" + str(lang) + "”")
    bComma = False
    dOptions = None
    sError = ""
    if request.cookies.user_id:
        if request.cookies.user_id in dUser:
            dOptions = dUser[request.cookies.user_id].get("gc_options", None)
            response.set_cookie("user_id", request.cookies.user_id, path="/", max_age=86400) # we renew cookie for 24h
        else:
            response.delete_cookie("user_id", path="/")
    if request.forms.options:
        try:
            dOptions = dict(dGCOptions)  if not dOptions  else dict(dOptions)
            dOptions.update(json.loads(request.forms.options))
        except (TypeError, json.JSONDecodeError):
            sError = "request options not used"
    sJSON = '{ "program": "grammalecte-fr", "version": "'+gce.version+'", "lang": "'+gce.lang+'", "error": "'+sError+'", "data" : [\n'
    for i, sText in enumerate(txt.getParagraph(request.forms.text), 1):
        if bool(request.forms.tf):
            sText = oTextFormatter.formatText(sText)
        sText = oGrammarChecker.generateParagraphAsJSON(i, sText, dOptions=dOptions, bEmptyIfNoErrors=True, bReturnText=bool(request.forms.tf))
        if sText:
            if bComma:
                sJSON += ",\n"
            sJSON += sText
            bComma = True
    sJSON += "\n]}\n"
    return sJSON

@app.route("/set_options/fr", method="POST")
def setOptions ():
    "set grammar options for current user"
    if request.forms.options:
        sUserId = request.cookies.user_id  if request.cookies.user_id  else next(userGenerator)
        dOptions = dUser[sUserId]["gc_options"]  if sUserId in dUser  else dict(dGCOptions)
        try:
            dOptions.update(json.loads(request.forms.options))
            dUser[sUserId] = { "time": int(time.time()), "gc_options": dOptions }
            response.set_cookie("user_id", sUserId, path="/", max_age=86400) # 24h
            return json.dumps(dUser[sUserId]["gc_options"])
        except (KeyError, json.JSONDecodeError):
            traceback.print_exc()
            return '{"error": "options not registered"}'
    return '{"error": "no options received"}'

@app.route("/reset_options/fr", method="POST")
def resetOptions ():
    "default grammar options"
    if request.cookies.user_id and request.cookies.user_id in dUser:
        del dUser[request.cookies.user_id]
    return "done"

@app.route("/format_text/fr", method="POST")
def formatText ():
    "apply the text formatter and returns text"
    return oTextFormatter.formatText(request.forms.text)

#@app.route('/static/<filepath:path>')
#def server_static (filepath):
#    return static_file(filepath, root='./views/static')


def purgeUsers ():
    "delete user options older than n hours"
    try:
        nNowMinusNHours = int(time.time()) - (int(request.forms.hours) * 60 * 60)
        for nUserId, dValue in dUser.items():
            if dValue["time"] < nNowMinusNHours:
                del dUser[nUserId]
        return True
    except KeyError:
        traceback.print_exc()
        return False


# ERROR
@app.error(404)
def error404 (error):
    "404 error page"
    return 'Error 404.<br/>' + str(error)


# initialisation
oGrammarChecker = grammalecte.GrammarChecker("fr", "Server")
oSpellChecker = oGrammarChecker.getSpellChecker()
oLexicographer = oGrammarChecker.getLexicographer()
oTextFormatter = oGrammarChecker.getTextFormatter()
gce = oGrammarChecker.getGCEngine()

dGCOptions = gce.getOptions()
dUser = {}
userGenerator = genUserId()


def main (sHost="localhost", nPort=8080, dOptions=None, bTestPage=False):
    "start server"
    global dGCOptions
    global TESTPAGE
    global HOMEPAGE

    if bTestPage:
        TESTPAGE = True
        HOMEPAGE = HOMEPAGE.replace("{SERVER_PORT}", str(nPort))

    if xArgs.opt_on  or  xArgs.opt_off:
        dOpt = {}
        if xArgs.opt_on:
            dOpt = { opt:True  for opt in xArgs.opt_on }
        if xArgs.opt_off:
            dOpt.update({ opt:False  for opt in xArgs.opt_off })

    main(xArgs.host or "localhost", \
         xArgs.port or 8080, \
         dOpt,
         xArgs.test_page)