#!/usr/bin/env python

# coding=utf-8

from lxml import etree

from models import *

from optparse import OptionParser

from sqlalchemy import Table, Column, Integer, BigInteger, String, MetaData, \

    ForeignKey

from sqlalchemy.orm import sessionmaker, mapper

from sqlalchemy.sql import select

from utils import *

import datetime

import email.utils

import logging

import os

import os.path

import re

import re

import sys

import time

import uuid

#class TweetExclude(object):

#    def __init__(self, id):

#        self.id = id

#        

#    def __repr__(self):

#        return "<TweetExclude(id=%d)>" % (self.id)

def parse_date(date_str):

    ts = email.utils.parsedate_tz(date_str)

    return datetime.datetime(*ts[0:7])

def get_options():

    parser = OptionParser()

    parser.add_option("-f", "--file", dest="filename",

                      help="write export to file", metavar="FILE", default="project_enmi.ldt")

    parser.add_option("-d", "--database", dest="database",

                      help="Input database", metavar="DATABASE")

    parser.add_option("-s", "--start-date", dest="start_date",

                      help="start date", metavar="START_DATE")

    parser.add_option("-e", "--end-date", dest="end_date",

                      help="end date", metavar="END_DATE")

    parser.add_option("-I", "--content-file", dest="content_file",

                      help="Content file", metavar="CONTENT_FILE")

    parser.add_option("-c", "--content", dest="content",

                      help="Content url", metavar="CONTENT")

    parser.add_option("-V", "--video-url", dest="video",

                      help="video url", metavar="VIDEO")

    parser.add_option("-i", "--content-id", dest="content_id",

                      help="Content id", metavar="CONTENT_ID")

    parser.add_option("-x", "--exclude", dest="exclude",

                      help="file containing the id to exclude", metavar="EXCLUDE")

    parser.add_option("-C", "--color", dest="color",

                      help="Color code", metavar="COLOR", default="16763904")

    parser.add_option("-H", "--hashtag", dest="hashtag",

                      help="Hashtag", metavar="HASHTAG", default="enmi")                      

    parser.add_option("-D", "--duration", dest="duration", type="int",

                      help="Duration", metavar="DURATION", default=None)

    parser.add_option("-n", "--name", dest="name",

                      help="Cutting name", metavar="NAME", default=u"Tweets")

    parser.add_option("-R", "--replace", dest="replace", action="store_true",

                      help="Replace tweet ensemble", metavar="REPLACE", default=False)

    parser.add_option("-L", "--list-conf", dest="listconf",

                      help="list of file to process", metavar="LIST_CONF", default=None)

    set_logging_options(parser)

    return parser.parse_args()

if __name__ == "__main__" :

    (options, args) = get_options()

    set_logging(options)

    logging.debug("OPTIONS : " + repr(options))

    engine, metadata = setup_database('sqlite:///'+options.database, echo=((options.verbose-options.quiet)>0), create_all = False)        

    Session = sessionmaker()

    conn = engine.connect()

    try :

        session = Session(bind=conn)

        try : 

            metadata = MetaData(bind=conn)

            tweet_exclude_table = Table("tweet_exclude", metadata, Column('id', BigInteger, primary_key=True), prefixes=['TEMPORARY'])

            #mapper(TweetExclude, tweet_exclude_table)

            metadata.create_all()

            if options.exclude and os.path.exists(options.exclude):

                with open(options.exclude, 'r+') as f:

                    tei = tweet_exclude_table.insert()

                    for line in f:

                        conn.execute(tei.values(id=long(line.strip())))

            if options.listconf:

                parameters = []

                confdoc = etree.parse(options.listconf)

                for node in confdoc.xpath("/twitter_export/file"):

                    params = {}

                    for snode in node:

                        if snode.tag == "path":

                            params['content_file'] = snode.text

                        elif snode.tag == "start_date":

                            params['start_date'] = snode.text

                        elif snode.tag == "end_date":

                            params['end_date'] = snode.text

                        elif snode.tag == "duration":

                            params['duration'] = int(snode.text)

                    parameters.append(params)

            else:                        

                parameters = [{

                    'start_date': options.start_date,

                    'end_date' : options.end_date,

                    'duration' : options.duration,

                    'content_file' : otions.content_file

                }]

            for params in parameters:

                logging.debug("PARAMETERS " + repr(params))

                start_date_str = params.get("start_date",None)

                end_date_str = params.get("end_date", None)

                duration = params.get("duration", None)

                content_file = params.get("content_file", None)

                start_date = parse_date(start_date_str) 

                ts = time.mktime(start_date.timetuple())

                if end_date_str:

                    end_date = parse_date(end_date_str)

                    te = time.mktime(end_date.timetuple())

                else:

                    te = ts + duration

                    end_date = start_date + datetime.timedelta(seconds=duration)

                query_res = session.query(Tweet).join(EntityHashtag).join(Hashtag).filter(~Tweet.id.in_(select([tweet_exclude_table.c.id]))).filter(Hashtag.text.contains(options.hashtag)).filter(Tweet.created_at >=  start_date).filter(Tweet.created_at <=  end_date).all()

                root = None

                ensemble_parent = None

                if content_file and os.path.exists(content_file):

                    doc = etree.parse(content_file)

                    root = doc.getroot()

                    ensemble_parent = root.xpath("//ensembles")[0]

                else:

                    root = etree.Element(u"iri")

                    project = etree.SubElement(root, u"project", {u"abstract":u"Twitter comments on ENMI",u"title":u"Twitter comments on ENMI 2009", u"user":u"IRI Web", u"id":unicode(uuid.uuid4())})

                    medias = etree.SubElement(root, u"medias")

                    media = etree.SubElement(medias, u"media", {u"pict":u"", u"src":unicode(options.content), u"video":unicode(options.video), u"id":unicode(options.content_id), u"extra":u""})

                    annotations = etree.SubElement(root, u"annotations")    

                    content = etree.SubElement(annotations, u"content", {u"id":unicode(options.content_id)})

                    ensemble_parent = content

                if options.replace:

                    for ens in ensemble_parent.iterchildren(tag=u"ensemble"):

                        if ens.get("id","").startswith("tweet_"):

                            ensemble_parent.remove(ens)

                ensemble = etree.SubElement(ensemble_parent, u"ensemble", {u"id":u"tweet_" + unicode(uuid.uuid4()), u"title":u"Ensemble Twitter", u"author":u"IRI Web", u"abstract":u"Ensemble Twitter pour ENMI 2009"})

                decoupage = etree.SubElement(ensemble, u"decoupage", {u"id": unicode(uuid.uuid4()), u"author": u"IRI Web"})

                etree.SubElement(decoupage, u"title").text = unicode(options.name)

                etree.SubElement(decoupage, u"abstract").text = unicode(options.name)

                elements = etree.SubElement(decoupage, u"elements")

                for tw in query_res:

                    tweet_ts_dt = tw.created_at

                    tweet_ts = int(time.mktime(tweet_ts_dt.timetuple()))

                    tweet_ts_rel = (tweet_ts-ts) * 1000

                    username = None

                    if tw.user is not None:

                        username = tw.user.name

                    if not username:

                        username = "anon."

                    element = etree.SubElement(elements, u"element" , {u"id":unicode(uuid.uuid4())+u"-"+unicode(tw.id), u"color":unicode(options.color), u"author":unicode(username), u"date":unicode(tweet_ts_dt.strftime("%Y/%m/%d")), u"begin": unicode(tweet_ts_rel), u"dur":u"0", u"src":u""})

                    etree.SubElement(element, u"title").text = unicode(username) + u": " + unicode(tw.text)

                    etree.SubElement(element, u"abstract").text = unicode(tw.text)

                    tags_node = etree.SubElement(element, u"tags")

                    for entity in tw.entity_list:

                        if entity.type == u'entity_hashtag': 

                            etree.SubElement(tags_node,u"tag").text = entity.hashtag.text

                    meta_element = etree.SubElement(element, u'meta')

                    polemics_element = etree.Element(u'polemics')

                    polemic_added = False

                    for m in re.finditer("(\+\+|\-\-|\?\?|\=\=)",tw.text):

                        polemic_added = True

                        pol_link = {

                            '++' : u'OK',

                            '--' : u'KO',

                            '??' : u'Q',

                            '==' : u'REF'}[m.group(1)]

                        etree.SubElement(polemics_element, u'polemic').text = pol_link

                    if polemic_added:

                        meta_element.append(polemics_element)

                if content_file and os.path.exists(content_file):

                    dest_file_name = content_file 

                else:

                    dest_file_name = options.filename

                logging.debug("WRITE : " + dest_file_name)

                output = open(content_file, "w")

                output.write(etree.tostring(root, encoding="utf-8", method="xml", pretty_print=True, xml_declaration=True))

                output.flush()

                output.close()

        finally:

            session.close()

    finally:

        conn.close()