scratchings/main.py

import datetime

import psycopg2.extras
import model
# from pprint import pprint
import time
import database
import sys
import view

if __name__ == '__main__':
    row = -1
    if len(sys.argv) > 1:
        try:
            row = int(sys.argv[1])
        except ValueError:
            sys.exit(1)
    broadcast = True
    if len(sys.argv) > 2:
        broadcast = False
    start = time.time()

    db = database.db

    race_days_global = model.scrape_main_page(row)
    interim = time.time()
    # print('interim 1 {}'.format(interim - start))
    # pprint(race_days_global)
    race_days = []
    raw_data_dict = {}
    for race_day in race_days_global:
        raw_data = model.get_raw_scratchings(race_day)
        race_day_details = model.process_raw_data(raw_data, race_day)
        race_days.append(race_day_details)
        raw_data_dict[race_day.name] = raw_data
    interim = time.time()
    # print('interim 2 {}'.format(interim - start))
    # pprint(race_days)
    cursor = db.cursor(cursor_factory=psycopg2.extras.NamedTupleCursor)
    for race_day in race_days:
        if not raw_data_dict or not race_day:
            # raw_data_dict may be empty when there is no data available (yet)
            continue
        raw_data = raw_data_dict[race_day.name]
        scratchings = model.get_scratching_details(raw_data, race_day)
        if not scratchings:
            # model.get_scratchings_details may return empty
            continue
        # retrieve previous stored scratching for this venue / day
        query = "SELECT * FROM horses WHERE venue = %s AND race_date = %s;"

        cursor.execute(query, (race_day.name, race_day.date))
        db_data = cursor.fetchall()

        # compare retrieved scratchings with new data
        for scratching in scratchings:
            found_in_database = False
            for row in db_data:
                # print(row)
                if (
                        scratching.date == row.race_date.strftime('%Y-%m-%d') and
                        scratching.venue == row.venue and
                        int(scratching.race) == int(row.race) and
                        scratching.horse == row.horse
                ):
                    message_string = 'Horse found: date = {}, venue = {}, race = {}, horse = {}'
                    message = message_string.format(scratching.date,
                                                    scratching.venue,
                                                    scratching.race,
                                                    scratching.horse)
                    # print(message)
                    # print(row)
                    found_in_database = True
            if not found_in_database:
                # report new scratching
                date_object = datetime.datetime.strptime(scratching.date, "%Y-%m-%d").date()
                day_abbr = date_object.strftime('%a')
                query = """
                    SELECT start_time, utctime, torn FROM race_program 
                    WHERE race_date = %s AND
                        venue = %s AND
                        race = %s;
                """
                cursor.execute(query, (scratching.date, scratching.venue, scratching.race))
                db_data = cursor.fetchone()
                flag = ''
                if db_data.torn:
                    flag = 'FLAGGED!! '
                message_string = '{}venue = {} {} {}-{} | race = {} starts at {} | {} UTC | horse = {}'
                message = message_string.format(flag,
                                                day_abbr,
                                                scratching.date,
                                                scratching.state,
                                                scratching.venue,
                                                scratching.race,
                                                db_data.start_time,
                                                db_data.utctime,
                                                scratching.horse)
                print(message)
                if broadcast:
                    view.broadcast(message)
                # store new scratching
                query = "INSERT INTO horses(venue, race_date, race, horse) VALUES(%s, %s, %s, %s)"
                cursor.execute(query, (scratching.venue, scratching.date,
                                       scratching.race, scratching.horse))
                db.commit()
                time.sleep(0.5)
    cursor.close()
    db.close()

    interim = time.time()
    # print('interim 3 {}'.format(interim - start))