dark_web_forums/Forums/Initialization/prepare_parser.py

__author__ = 'DarkWeb'

import codecs
import glob
import os, re
import shutil
from psycopg2.extras import RealDictCursor

from Forums.DB_Connection.db_connection import *
from Forums.BestCardingWorld.parser import *

from Forums.Classifier.classify_product import predict
# from DarkWebMining_Sample.Forums.Classifier.classify_product import predict_semi

# controls the log id
nError = 0

# determines if forum is russian, not really used now but maybe later
def isRussianForum(forum):

    with open('russian_forums.txt') as f:
        forums = f.readlines()

    result = False
    for iforum in forums:

        iforum = iforum.replace('\n','')
        if iforum == forum:
            result = True
            break

    return result


#tries to match description pages to listing pages by using a key made for every description page and every link in  listing page
#once verified and matched, the info is merged into a 'rec', which is returned
#@param: detPage is a list of keys of valid pages, rec is the row of data of an instance
#return: rec, row of data, that may have additional data added on after matching description to listing page
def mergePages(rmm, rec):

    # key = u"Top:" + rec[1].upper().strip() + u" User:" + rec[5].upper().strip()
    # key = rec[16]

    print ("----------------- Matched: " + rec[3] + "--------------------")

    if rmm[9] != "-1":         # image_user
        rec[9] = rmm[9]
    rec[10] = rmm[1]
    rec[11] = rmm[2]
    rec[12] = rmm[3]
    rec[13] = rmm[4]
    rec[14] = rmm[5]
    rec[15] = rmm[6]
    rec[16] = rmm[7]
    rec[17] = rmm[8]
    rec[18] = rmm[10]

    return rec


#gets a string of posts and joins them together into one string to be put in the database as one string of text
#@param: list of strings (the posts of a thread)
#return: string containing the concatenation of all the strings
def getPosts(posts):

    strPosts = ' '.join(posts)
    return strPosts.strip()


#uses db connection , another program, methods to persists values to the correct categories
#@param: row is the list of entries for this instance, cur is the db connection object
def persist_data(url, row, cur):

    forum = create_forum(cur, row, url)

    author = create_author(cur, row, forum)

    topic = create_topic(cur, forum, row, author)

    create_posts(cur, row, forum, topic)


def incrementError():
    global nError
    nError += 1

def read_file(filePath, createLog, logFile):

    try:
        html = codecs.open(filePath.strip('\n'), encoding='utf8')
        soup = BeautifulSoup(html, "html.parser")
        html.close()
        time.sleep(0.01)    # making sure the file is closed before returning soup object
        return soup
    except:

        try:
            html = open(filePath.strip('\n'))
            soup = BeautifulSoup(html, "html.parser")
            html.close()
            time.sleep(0.01)    # making sure the file is closed before returning soup object
            return soup
        except:

            incrementError()
            print("There was a problem to read the file " + filePath)
            if createLog:
                logFile.write(
                    str(nError) + ". There was a problem to read the file " + filePath + "\n" + traceback.format_exc() + "\n")
            return None


def parse_listing(forum, listingFile, soup, createLog, logFile):

    try:

        if forum == "BestCardingWorld":
            rw = bestcardingworld_listing_parser(soup)
        else:
            print("MISSING CALL TO LISTING PARSER IN PREPARE_PARSER.PY!")
            raise Exception
        return rw

    except:

        incrementError()
        print("There was a problem to parse the file " + listingFile + " in the listing section!")
        traceback.print_exc()
        if createLog:
            logFile.write(
                str(nError) + ". There was a problem to parse the file " + listingFile + " in the Listing section.\n"
                + traceback.format_exc() + "\n")
        return None


def parse_description(forum, descriptionFile, soup, createLog, logFile):

    try:

        if forum == "BestCardingWorld":
            rmm = bestcardingworld_description_parser(soup)
        else:
            print("MISSING CALL TO DESCRIPTION PARSER IN PREPARE_PARSER.PY!")
            raise Exception
        return rmm

    except:

        incrementError()
        print("There was a problem to parse the file " + descriptionFile + " in the Description section!")
        traceback.print_exc()
        if createLog:
            logFile.write(
                str(nError) + ". There was a problem to parse the file " + descriptionFile + " in the Description section.\n"
                + traceback.format_exc() + "\n")
        return None


def persist_record(url, rec, cur, con, createLog, logFile, listingFile, descriptionFile):

    try:
        persist_data(url, tuple(rec), cur)
        con.commit()
        return True
    except:

        con.rollback()

        incrementError()
        print(f"There was a problem to persist the files ({listingFile} + {descriptionFile}) in the database!")
        traceback.print_exc()
        if createLog:
            logFile.write(
                str(nError) + f". There was a problem to persist the files ({listingFile} + {descriptionFile}) in the database!\n"
                + traceback.format_exc() + "\n")
        return False


def move_file(filePath, createLog, logFile):

    source = filePath
    destination = filePath.replace(os.path.basename(filePath), "") + 'Read\\' + os.path.basename(filePath)

    try:
        shutil.move(source, destination, shutil.copy2)
        return True
    except:

        try:
            shutil.move(source, destination, shutil.copytree)
            return True
        except:
            incrementError()
            print("There was a problem to move the file " + filePath)
            traceback.print_exc()
            if createLog:
                logFile.write(
                    str(nError) + ". There was a problem to move the file " + filePath + "\n" + traceback.format_exc() + "\n")
            return False


#main method for this program, what actually gets the parsed info from the parser, and persists them into the db
#calls the different parser methods here depending on the type of html page
def new_parse(forum, url, createLog):

    from Forums.Initialization.forums_mining import config, CURRENT_DATE

    global nError
    nError = 0

    print("Parsing the " + forum + " forum and conduct data classification to store the information in the database.")

    # Connecting to the database
    con = connectDataBase()
    cur = con.cursor(cursor_factory=RealDictCursor)

    # Creating the tables (The database should be created manually)
    create_database(cur, con)

    mainDir = os.path.join(config.get('Project', 'shared_folder'), "Forums\\" + forum + "\\HTML_Pages")

    # Creating the log file for each Forum
    if createLog:
        try:
            logFile = open(mainDir + f"/{CURRENT_DATE}/" + forum + "_" + CURRENT_DATE + ".log", "w")
        except:
            print("Could not open log file!")
            createLog = False
            logFile = None
            # raise SystemExit
    else:
        logFile = None

    # Reading the Listing Html Pages
    listings = glob.glob(os.path.join(mainDir, CURRENT_DATE + "\\Listing", '*.html'))
    for listingIndex, listingFile in enumerate(listings):

        print("Reading listing folder of '" + forum + "', file '" + os.path.basename(listingFile) + "', index= " + str(
            listingIndex + 1) + " ... " + str(len(listings)))

        listingSoup = read_file(listingFile, createLog, logFile)

        # listing flags
        doParseListing = listingSoup is not None
        doDescription = False

        readDescriptionError = False
        parseDescriptionError = False
        persistDescriptionError = False
        moveDescriptionError = False
        findDescriptionError = False

        rw = []

        if doParseListing:

            rw = parse_listing(forum, listingFile, listingSoup, createLog, logFile)

            doDescription = rw is not None

        if doDescription:

            nFound = 0

            for rec in rw:

                rec = rec.split(',')

                descriptionPattern = cleanLink(rec[6]) + "page[0-9]*.html"

                # Reading the associated description Html Pages
                descriptions = glob.glob(os.path.join(mainDir, CURRENT_DATE + "\\Description", descriptionPattern))

                nFound += len(descriptions)

                for descriptionIndex, descriptionFile in enumerate(descriptions):

                    print("Reading description folder of '" + forum + "', file '" + os.path.basename(
                        descriptionFile) + "', index= " + str(descriptionIndex + 1) + " ... " + str(len(descriptions)))

                    descriptionSoup = read_file(descriptionFile, createLog, logFile)

                    # description flags
                    doParseDescription = descriptionSoup is not None
                    doPersistRecord = False
                    doMoveDescription = False

                    rmm = []

                    if doParseDescription:

                        rmm = parse_description(forum, descriptionFile, descriptionSoup, createLog, logFile)

                        doPersistRecord = rmm is not None

                    else:
                        readDescriptionError = True
                        parseDescriptionError = True

                    if doPersistRecord:

                        # Combining the information from Listing and Description Pages
                        rec = mergePages(rmm, rec)

                        # Append to the list the classification of the topic
                        rec.append(str(predict(rec[3], getPosts(rec[15]), language='sup_english')))

                        # Persisting the information in the database
                        persistSuccess = persist_record(url, rec, cur, con, createLog, logFile, listingFile, descriptionFile)

                        doMoveDescription = persistSuccess

                    else:
                        parseDescriptionError = True

                    if doMoveDescription:

                        # move description files of completed folder
                        moveSuccess = move_file(descriptionFile, createLog, logFile)

                        if not moveSuccess:
                            moveDescriptionError = True

                    else:
                        moveDescriptionError = True

            if not (nFound > 0):

                findDescriptionError = True

                incrementError()
                print(f"There was a problem to locate the file(s) for {listingFile} in the Description section!")
                if createLog:
                    logFile.write(
                        str(nError) + f". There was a problem to locate the file(s) for {listingFile}"
                                      f" in the Description section!\n\n")

            if not (readDescriptionError or parseDescriptionError or persistDescriptionError
                    or moveDescriptionError or findDescriptionError):

                # move listing files of completed folder
                move_file(listingFile, createLog, logFile)

    if createLog:
        logFile.close()

    cur.close()
    con.close()

    print("Parsing the " + forum + " forum and data classification done.")