mastochess/mastochess.py

import pdb
import sys
import os
import os.path
import re
import unidecode
from datetime import datetime, timedelta
from mastodon import Mastodon
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.base import MIMEBase
from email import encoders
import smtplib
from smtplib import SMTPException, SMTPAuthenticationError, SMTPConnectError, SMTPRecipientsRefused
import socket
from socket import gaierror
import psycopg2
import chess
import chess.svg
from cairosvg import svg2png

def cleanhtml(raw_html):
    cleanr = re.compile('<.*?>')
    cleantext = re.sub(cleanr, '', raw_html)
    return cleantext

def unescape(s):
    s = s.replace("&apos;", "'")
    return s

def get_bot_id():

    ###################################################################################################################################
    # get bot_id from bot's username

    try:

        conn = None

        conn = psycopg2.connect(database = mastodon_db, user = mastodon_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("select id from accounts where username = (%s) and domain is null", (bot_username,))

        row = cur.fetchone()

        if row != None:

            bot_id = row[0]

        cur.close()

        return bot_id

    except (Exception, psycopg2.DatabaseError) as error:

        print(error)

    finally:

        if conn is not None:

            conn.close()

def get_user_domain(account_id):

    try:

        conn = None

        conn = psycopg2.connect(database = mastodon_db, user = mastodon_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("select username, domain from accounts where id=(%s)", (account_id,))

        row = cur.fetchone()

        if row != None:

            username = row[0]

            domain = row[1]

        cur.close()

        return (username, domain)

    except (Exception, psycopg2.DatabaseError) as error:

        print(error)

    finally:

        if conn is not None:

            conn.close()

def get_piece_name(captured_piece):

    if captured_piece == 1:

        piece_name = pawn_piece

    if captured_piece == 2:

        piece_name = knight_piece

    if captured_piece == 3:

        piece_name = bishop_piece

    if captured_piece == 4:

        piece_name = rook_piece

    if captured_piece == 5:

        piece_name = queen_piece

    if captured_piece == 6:

        piece_name = king_piece

    return piece_name

def get_moved_piece_name(moved_piece):

    if moved_piece == 1:

        moved_piece_name = pawn_piece_letter

    if moved_piece == 2:

        moved_piece_name = knight_piece_letter

    if moved_piece == 3:

        moved_piece_name = bishop_piece_letter

    if moved_piece == 4:

        moved_piece_name = rook_piece_letter

    if moved_piece == 5:

        moved_piece_name = queen_piece_letter

    if moved_piece == 6:

        moved_piece_name = king_piece_letter

    return moved_piece_name

def get_notification_data():

    try:

        account_id_lst = []

        status_id_lst = []

        text_lst = []

        visibility_lst = []

        url_lst = []

        search_text = [search_end, search_move, search_new, search_games, search_send, search_help]

        conn = None

        conn = psycopg2.connect(database = mastodon_db, user = mastodon_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        i=0

        while i < len(search_text):

            like_text = "%"+search_text[i]+"%"

            select_query = "select account_id, id, text, visibility, url, created_at from statuses where text like (%s) and created_at + interval '60 minutes' > now() - interval '5 minutes'"
            select_query += " and id=any (select status_id from mentions where account_id=(%s)) order by created_at asc"

            cur.execute(select_query, (like_text, str(bot_id)))

            rows = cur.fetchall()

            for row in rows:

                account_id_lst.append(row[0])

                status_id_lst.append(row[1])

                text_lst.append(row[2])

                if row[3] == 0:
                    visibility_lst.append('public')
                elif row[3]  == 1:
                    visibility_lst.append('unlisted')
                elif row[3]  == 2:
                    visibility_lst.append('private')
                elif row[3]  == 3:
                    visibility_lst.append('direct')

                url_lst.append(row[4])

            i += 1

        cur.close()

        return (account_id_lst, status_id_lst, text_lst, visibility_lst, url_lst)

    except (Exception, psycopg2.DatabaseError) as error:

        print(error)

    finally:

        if conn is not None:

            conn.close()

def update_replies(status_id, username, now):

    post_id = status_id

    try:

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        insert_sql = "insert into botreplies(status_id, query_user, status_created_at) values(%s, %s, %s) ON CONFLICT DO NOTHING"

        cur.execute(insert_sql, (post_id, username, now))

        conn.commit()

        cur.close()

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def check_replies(status_id):

    post_id = status_id

    replied = False

    try:

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("select status_id from botreplies where status_id=(%s)", (post_id,))

        row = cur.fetchone()

        if row != None:

            replied = True

        else:

            replied = False

        cur.close()

        return replied

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def current_games():

    player1_name_lst = []

    player2_name_lst = []

    game_status_lst = []

    game_link_lst = []

    next_move_lst = []

    try:

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("select white_user, black_user, chess_status, chess_link, next_move from games where not finished")

        rows = cur.fetchall()

        for row in rows:

           player1_name_lst.append(row[0])

           if row[1] != None:

               player2_name_lst.append(row[1])

           else:

               player2_name_lst.append(" ")

           game_status_lst.append(row[2])

           game_link_lst.append(row[3])

           next_move_lst.append(row[4])

        cur.close()

        return (player1_name_lst, player2_name_lst, game_status_lst, game_link_lst, next_move_lst)

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def check_games():

    game_id = ''

    white_user = ''

    black_user = ''

    on_going_game = ''

    waiting = False

    playing_user = ''

    try:

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        ### check if there is an ongoing game

        cur.execute("SELECT game_id, white_user, black_user, chess_game, waiting, next_move FROM games where not finished and white_user=(%s) ", (username,))

        row = cur.fetchone()

        if row == None:

            cur.execute("SELECT game_id, white_user, black_user, chess_game, waiting, next_move FROM games where not finished and black_user=(%s)", (username,))

            row = cur.fetchone()

            if row == None:

                is_playing = False

            else:

                is_playing = True

                game_id = row[0]

                white_user = row[1]

                if row[1] != None:

                    black_user = row[2]

                else:

                    black_user = ''

                on_going_game = row[3]

                waiting = row[4]

                playing_user = row[5]

        else:

            is_playing = True

            game_id = row[0]

            white_user = row[1]

            if row[2] != None:

                black_user = row[2]

            else:

                black_user = ''

            on_going_game = row[3]

            waiting = row[4]

            playing_user = row[5]

        cur.close()

        return (is_playing, game_id, white_user, black_user, on_going_game, waiting, playing_user)

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def new_game(toot_url):

    try:

        game_status = 'waiting'

        waiting = True

        board_game = board.fen()

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        insert_query = 'INSERT INTO games(created_at, white_user, chess_game, chess_status, waiting, updated_at, chess_link) VALUES (%s, %s, %s, %s, %s, %s, %s) ON CONFLICT DO NOTHING'

        cur.execute(insert_query, (now, username, board_game, game_status, waiting, now, toot_url))

        insert_query = 'INSERT INTO stats(created_at, white_user) VALUES (%s,%s) ON CONFLICT DO NOTHING'

        cur.execute(insert_query, (now, username,))

        conn.commit()

        cur.close()

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def update_game(board_game, toot_url):

    try:

        now = datetime.now()

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("update games set chess_game=(%s), chess_link=(%s), updated_at=(%s) where game_id=(%s)", (board_game, toot_url, now, game_id,))

        conn.commit()

        cur.close()

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def save_anotation(moving):

    if moving_piece != 1:

        square_index = chess.SQUARE_NAMES.index(moving[2:])

        moved_piece = board.piece_type_at(square_index)

        moved_piece_name = get_moved_piece_name(moved_piece)

    else:

        moved_piece_name = 'P'

        if promoted == True:

            moving = moving + 'q'

    game_file = "anotations/" + str(game_id) + ".txt"

    if moved_piece_name == 'P':

        moved_piece_name = moved_piece_name.replace('P','')

    if capture == True:

        moved_piece_name = moved_piece_name + "X"

    if check == True:

        moved_piece_name = moved_piece_name + moving[2:] + "+"

    if checkmate == True:

        moved_piece_name = moved_piece_name + "+"

    if bool(board.turn == chess.BLACK) == True:

        if check != True and checkmate != True:

            if promoted != True:

                line_data = str(board.fullmove_number) + ". " + moved_piece_name + moving[2:]

            else:

                line_data = str(board.fullmove_number) + ". " + moved_piece_name + "=D"

        else:

            line_data = str(board.fullmove_number) + ". " + moved_piece_name

    else:

        moved_piece_name = moved_piece_name.lower()

        if check != True and checkmate != True:

            if promoted != True:

                line_data = " - " + moved_piece_name + moving[2:] + "\n"

            else:

                line_data = " - " + moved_piece_name + "=D"
        else:

            line_data = " - " + moved_piece_name + "\n"

    if not os.path.isfile(game_file):

        file_header = game_name + ': ' + str(game_id) + "\n" + white_user + " / " + black_user + "\n\n"

        with open(game_file, 'w+') as f:

            f.write(file_header)

        with open(game_file, 'a') as f:

            f.write(line_data)

    else:

        with open(game_file, 'a') as f:

            f.write(line_data)

def get_email_address(username):

    try:

        conn = None

        conn = psycopg2.connect(database = mastodon_db, user = mastodon_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("select email from users where account_id = (select id from accounts where username = (%s) and domain is null)", (username,))

        row = cur.fetchone()

        if row != None:

            username_email = row[0]

        else:

            username_email = None

        cur.close()

        return username_email

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def send_anotation(game_id):

    emailed = False

    game_found = False

    username_email = get_email_address(username)

    if username_email == None:

        return (emailed, game_id, game_found)

    # Create message object instance
    msg = MIMEMultipart()

    # Declare message elements
    msg['From'] = smtp_user_login
    msg['To'] = username_email
    msg['Subject'] = email_subject + game_id

    # Attach the game anotation
    file_to_attach = "anotations/" + game_id + ".txt"
    try:

        attachment = open(file_to_attach, 'rb')

        game_found = True

    except FileNotFoundError as not_found_error:

        print(not_found_error)
        return (emailed, game_id, game_found)

    obj = MIMEBase('application', 'octet-stream')
    obj.set_payload(attachment.read())
    encoders.encode_base64(obj)
    obj.add_header('Content-Disposition', "attachment; filename= "+file_to_attach)

    # Add the message body to the object instance
    msg.attach(obj)

    try:

        # Create the server connection
        server = smtplib.SMTP(smtp_host)
	# Switch the connection over to TLS encryption
        server.starttls()
	# Authenticate with the server
        server.login(smtp_user_login, smtp_user_password)
	# Send the message
        server.sendmail(msg['From'], msg['To'], msg.as_string())
	# Disconnect
        server.quit()

        print("Successfully sent game anotations to %s" % msg['To'])
        emailed = True
        return (emailed, game_id, game_found)

    except SMTPAuthenticationError as auth_error:

        print(auth_error)
        pass
        return emailed

    except socket.gaierror as socket_error:

        print(socket_error)
        pass
        return emailed

    except SMTPRecipientsRefused as recip_error:

        print(recip_error)
        pass
        return emailed

def close_game():

    now = datetime.now()

    waiting = False

    finished = True

    try:

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("update games set waiting=(%s), finished=(%s), updated_at=(%s) where game_id=(%s)", (waiting, finished, now, game_id))

        cur.execute("update stats set winner=(%s), finished=(%s), updated_at=(%s) where game_id=(%s)", (username, finished, now, game_id))

        conn.commit()

        cur.close()

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def get_stats(player):

    played_games = 0

    wins = 0

    try:

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("select count(*) from stats where white_user = (%s) or black_user = (%s) and finished", (player, player))

        row = cur.fetchone()

        if row != None:

          played_games = row[0]

        cur.execute("select count(*) from stats where winner = (%s) and finished", (player,))

        row = cur.fetchone()

        if row != None:

          wins = row[0]

        cur.close()

        return (played_games, wins)

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def waiting_games():

    try:

        game_id = ''

        game_waiting = False

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("select game_id from games where waiting order by game_id desc limit 1")

        row = cur.fetchone()

        if row != None:

          game_id = row[0]
          game_waiting = True

        cur.close()

        return (game_id, game_waiting)

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def join_player():

    try:

        now = datetime.now()

        game_status = 'waiting'

        waiting = True

        moves = 0

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("update games set black_user=(%s), chess_status='playing', waiting='f', updated_at=(%s), moves=(%s) where game_id=(%s)", (username, now, moves, game_id,))

        cur.execute("update stats set black_user=(%s), updated_at=(%s) where game_id=(%s)", (username, now, game_id,))

        conn.commit()

        cur.execute("select white_user, chess_game from games where game_id=(%s)", (game_id,))

        row = cur.fetchone()

        if row != None:

            white_user = row[0]

            chess_game = row[1]

        cur.execute("update games set next_move=(%s), updated_at=(%s) where game_id=(%s)", (white_user, now, game_id,))

        conn.commit()

        cur.close()

        game_status = 'playing'

        return (game_status, white_user, chess_game)

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def update_moves(username, game_moves):

    try:

        now = datetime.now()

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("update games set next_move=(%s), last_move=(%s), moves=(%s), updated_at=(%s) where game_id=(%s)", (playing_user, username, game_moves, now, game_id,))

        conn.commit()

        cur.close()

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def next_move(playing_user):

    try:

        now = datetime.now()

        waiting = True

        conn = None

        conn = psycopg2.connect(database = chess_db, user = chess_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("select white_user, black_user, last_move, moves from games where game_id=(%s)", (game_id,))

        row = cur.fetchone()

        if row != None:

            white_user = row[0]
            black_user = row[1]
            last_move = row[2]
            moves = row[3]

        if last_move != None:

            if playing_user == white_user:

                playing_user = black_user

            elif playing_user == black_user:

                playing_user = white_user

        else:

            last_move = white_user

        cur.execute("update games set next_move=(%s), updated_at=(%s) where game_id=(%s)", (playing_user, now, game_id,))

        conn.commit()

        cur.close()

        return playing_user

    except (Exception, psycopg2.DatabaseError) as error:

        sys.exit(error)

    finally:

        if conn is not None:

            conn.close()

def toot_help():

    help_text = '@'+username + ' ' + search_help + ':\n'
    help_text += '\n'
    help_text += '@'+bot_username + ' ' + start_or_join_a_new_game + '\n'
    help_text += '\n'
    help_text += '@'+bot_username + ' ' + move_a_piece + '\n'
    help_text += '\n'
    help_text += '@'+bot_username + ' ' + leave_a_game + '\n'
    help_text += '\n'
    help_text += '@'+bot_username + ' ' + list_games + '\n'
    help_text += '\n'
    help_text += '@'+bot_username + ' ' + get_a_game_anotation + '\n'
    help_text += '\n'
    help_text += '@'+bot_username + ' ' + show_help + '\n'

    return help_text

def replying():

    reply = False

    moving = ''

    content = cleanhtml(text)
    content = unescape(content)

    try:

        start = content.index("@")
        end = content.index(" ")
        if len(content) > end:

            content = content[0: start:] + content[end +1::]

        neteja = content.count('@')

        i = 0
        while i < neteja :

            start = content.rfind("@")
            end = len(content)
            content = content[0: start:] + content[end +1::]
            i += 1

        question = content.lower()

        query_word = question
        query_word_length = len(query_word)

        if unidecode.unidecode(question)[0:query_word_length] == query_word:

            if query_word  == search_new:

                reply = True

            elif query_word[:search_move_slicing] == search_move:

                moving = query_word[moving_slicing:query_word_length].replace(" ","")
                reply = True

            elif query_word == search_end:

                reply = True

            elif query_word == search_games:

                reply = True

            elif query_word[:search_send_slicing] == search_send:

                reply = True

            elif query_word == search_help:

                reply = True

            else:

                reply = False

        return (reply, query_word, moving)

    except ValueError as v_error:

        print(v_error)

def load_strings(bot_lang):

    search_end = get_parameter("search_end", language_filepath)
    search_move = get_parameter("search_move", language_filepath)
    search_new = get_parameter("search_new", language_filepath)
    search_games = get_parameter("search_games", language_filepath)
    search_send = get_parameter("search_send", language_filepath)
    search_help = get_parameter("search_help", language_filepath)
    new_game_started = get_parameter("new_game_started", language_filepath)
    playing_with = get_parameter("playing_with", language_filepath)
    your_turn = get_parameter("your_turn", language_filepath)
    game_name = get_parameter("game_name", language_filepath)
    chess_hashtag = get_parameter("chess_hashtag", language_filepath)
    send_error = get_parameter("send_error", language_filepath)

    return (search_end, search_move, search_new, search_games, search_send, search_help, new_game_started, playing_with, your_turn, game_name, chess_hashtag, send_error)

def load_strings1(bot_lang):

    game_number_anotations = get_parameter("game_number_anotations", language_filepath)
    anotations_sent = get_parameter("anotations_sent", language_filepath)
    game_no_exists = get_parameter("game_no_exists", language_filepath)
    it_not_exists = get_parameter("it_not_exists", language_filepath)
    game_already_started = get_parameter("game_already_started", language_filepath)
    cant_send_to_fediverse_account = get_parameter("cant_send_to_fediverse_account", language_filepath)
    wait_other_player = get_parameter("wait_other_player", language_filepath)
    is_not_legal_move = get_parameter("is_not_legal_move", language_filepath)
    check_done = get_parameter("check_done", language_filepath)
    check_mate = get_parameter("check_mate", language_filepath)

    return (game_number_anotations, anotations_sent, game_no_exists, cant_send_to_fediverse_account, it_not_exists, game_already_started, wait_other_player, is_not_legal_move, check_done, check_mate)

def load_strings2(bot_lang):

    check_mate_movements = get_parameter("check_mate_movements", language_filepath)
    the_winner_is = get_parameter("the_winner_is", language_filepath)
    well_done = get_parameter("well_done", language_filepath)
    winned_games = get_parameter("winned_games", language_filepath)
    wins_of_many = get_parameter("wins_of_many", language_filepath)
    lost_piece = get_parameter("lost_piece", language_filepath)
    not_legal_move_str = get_parameter("not_legal_move_str", language_filepath)
    player_leave_game = get_parameter("player_leave_game", language_filepath)

    return (check_mate_movements, the_winner_is, well_done, winned_games, wins_of_many, lost_piece, not_legal_move_str, player_leave_game)

def load_strings3(bot_lang):

    leave_waiting_game = get_parameter("leave_waiting_game", language_filepath)
    started_games = get_parameter("started_games", language_filepath)
    game_is_waiting = get_parameter("game_is_waiting", language_filepath)
    game_is_on_going = get_parameter("game_is_on_going", language_filepath)
    no_on_going_games = get_parameter("no_on_going_games", language_filepath)
    is_not_your_turn = get_parameter("is_not_your_turn", language_filepath)
    is_the_turn_of = get_parameter("is_the_turn_of", language_filepath)

    return (leave_waiting_game, started_games, game_is_waiting, game_is_on_going, no_on_going_games, is_not_your_turn, is_the_turn_of)

def load_strings4(bot_lang):

    pawn_piece = get_parameter("pawn_piece", language_filepath)
    knight_piece = get_parameter("knight_piece", language_filepath)
    bishop_piece = get_parameter("bishop_piece", language_filepath)
    rook_piece = get_parameter("rook_piece", language_filepath)
    queen_piece = get_parameter("queen_piece", language_filepath)
    king_piece = get_parameter("king_piece", language_filepath)

    return (pawn_piece, knight_piece, bishop_piece, rook_piece, queen_piece, king_piece)

def load_strings5(bot_lang):

    pawn_piece_letter = get_parameter("pawn_piece_letter", language_filepath)
    knight_piece_letter = get_parameter("knight_piece_letter", language_filepath)
    bishop_piece_letter = get_parameter("bishop_piece_letter", language_filepath)
    rook_piece_letter = get_parameter("rook_piece_letter", language_filepath)
    queen_piece_letter = get_parameter("queen_piece_letter", language_filepath)
    king_piece_letter = get_parameter("king_piece_letter", language_filepath)
    email_subject = get_parameter("email_subject", language_filepath)

    return (pawn_piece_letter, knight_piece_letter, bishop_piece_letter, rook_piece_letter, queen_piece_letter, king_piece_letter, email_subject)

def load_strings6(bot_lang):

    start_or_join_a_new_game = get_parameter("start_or_join_a_new_game", language_filepath)
    move_a_piece = get_parameter("move_a_piece", language_filepath)
    leave_a_game = get_parameter("leave_a_game", language_filepath)
    list_games = get_parameter("list_games", language_filepath)
    get_a_game_anotation = get_parameter("get_a_game_anotation", language_filepath)
    show_help = get_parameter("show_help", language_filepath)

    return (start_or_join_a_new_game, move_a_piece, leave_a_game, list_games, get_a_game_anotation, show_help)

def mastodon():

    # Load secrets from secrets file
    secrets_filepath = "secrets/secrets.txt"
    uc_client_id     = get_parameter("uc_client_id",     secrets_filepath)
    uc_client_secret = get_parameter("uc_client_secret", secrets_filepath)
    uc_access_token  = get_parameter("uc_access_token",  secrets_filepath)

    # Load configuration from config file
    config_filepath = "config/config.txt"
    mastodon_hostname = get_parameter("mastodon_hostname", config_filepath)
    bot_username = get_parameter("bot_username", config_filepath)

    # Initialise Mastodon API
    mastodon = Mastodon(
        client_id = uc_client_id,
        client_secret = uc_client_secret,
        access_token = uc_access_token,
        api_base_url = 'https://' + mastodon_hostname,
    )

    # Initialise access headers
    headers={ 'Authorization': 'Bearer %s'%uc_access_token }

    return (mastodon, mastodon_hostname, bot_username)

def db_config():

    # Load db configuration from config file
    config_filepath = "config/db_config.txt"
    mastodon_db = get_parameter("mastodon_db", config_filepath)
    mastodon_db_user = get_parameter("mastodon_db_user", config_filepath)
    chess_db = get_parameter("chess_db", config_filepath)
    chess_db_user = get_parameter("chess_db_user", config_filepath)

    return (mastodon_db, mastodon_db_user, chess_db, chess_db_user)

def smtp_config():

    smtp_filepath = "config/smtp_config.txt"
    smtp_host = get_parameter("smtp_host", smtp_filepath)
    smtp_user_login = get_parameter("smtp_user_login", smtp_filepath)
    smtp_user_password = get_parameter("smtp_user_password", smtp_filepath)

    return (smtp_host, smtp_user_login, smtp_user_password)

def get_parameter( parameter, file_path ):

    if not os.path.isfile(file_path):
        print("File %s not found, exiting."%file_path)
        sys.exit(0)

    with open( file_path ) as f:
        for line in f:
            if line.startswith( parameter ):
                return line.replace(parameter + ":", "").strip()

    print(file_path + "  Missing parameter %s "%parameter)
    sys.exit(0)

def create_dir():
    if not os.path.exists('games'):
        os.makedirs('games')
    if not os.path.exists('anotations'):
        os.makedirs('anotations')

def usage():

    print('usage: python ' + sys.argv[0] + ' --play' + ' --en')

###############################################################################
# main

if __name__ == '__main__':

    # usage modes

    if len(sys.argv) == 1:

        usage()

    elif len(sys.argv) >= 2:

        if sys.argv[1] == '--play':

            if len(sys.argv) == 3:

                if sys.argv[2] == '--en':

                    bot_lang = 'en'

                elif sys.argv[2] == '--es':

                    bot_lang = 'es'
            else:

                bot_lang = 'ca'

            if bot_lang == 'ca':

                language_filepath = 'locales/ca.txt'

            elif bot_lang == 'en':

                language_filepath = 'locales/en.txt'

            elif bot_lang == 'es':

                language_filepath = 'locales/es.txt'

            else:

                print("\nOnly 'ca', 'es' and 'en' languages are supported.\n")
                sys.exit(0)

            if bot_lang == 'ca':

                search_move_slicing = 3
                moving_slicing = 3
                search_send_slicing = 5
                send_game_slicing = 6

            elif bot_lang == 'en':

                search_move_slicing = 4
                moving_slicing = 4
                search_send_slicing = 4
                send_game_slicing = 5

            elif bot_lang == 'es':

                search_move_slicing = 5
                moving_slicing = 5
                search_send_slicing = 5
                send_game_slicing = 6

            search_end, search_move, search_new, search_games, search_send, search_help, new_game_started, playing_with, your_turn, game_name, chess_hashtag, send_error = load_strings(bot_lang)

            game_number_anotations, anotations_sent, game_no_exists, cant_send_to_fediverse_account, it_not_exists, game_already_started, wait_other_player, is_not_legal_move, check_done, check_mate  = load_strings1(bot_lang)

            check_mate_movements, the_winner_is, well_done, winned_games, wins_of_many, lost_piece, not_legal_move_str, player_leave_game = load_strings2(bot_lang)

            leave_waiting_game, started_games, game_is_waiting, game_is_on_going, no_on_going_games, is_not_your_turn, is_the_turn_of = load_strings3(bot_lang)

            pawn_piece, knight_piece, bishop_piece, rook_piece, queen_piece, king_piece = load_strings4(bot_lang)

            pawn_piece_letter, knight_piece_letter, bishop_piece_letter, rook_piece_letter, queen_piece_letter, king_piece_letter, email_subject = load_strings5(bot_lang)

            start_or_join_a_new_game, move_a_piece, leave_a_game, list_games, get_a_game_anotation, show_help = load_strings6(bot_lang)

            mastodon, mastodon_hostname, bot_username = mastodon()

            mastodon_db, mastodon_db_user, chess_db, chess_db_user = db_config()

            smtp_host, smtp_user_login, smtp_user_password = smtp_config()

            now = datetime.now()

            create_dir()

            bot_id = get_bot_id()

            account_id_lst, status_id_lst, text_lst, visibility_lst, url_lst = get_notification_data()

            i = 0
            while i < len(account_id_lst):

                account_id = account_id_lst[i]

                username, domain = get_user_domain(account_id)

                if domain != None:

                    username = username + '@' + domain

                status_id = status_id_lst[i]

                replied = check_replies(status_id)

                if replied == True: #or domain != None:

                    i += 1

                    continue

                #if domain != None:

                    #update_replies(username, status_id)

                    #i += 1

                # listen them or not

                text = text_lst[i]

                reply, query_word, moving = replying()

                visibility = visibility_lst[i]

                status_url = url_lst[i]

                if query_word != search_games:

                    is_playing, game_id, white_user, black_user, on_going_game, waiting, playing_user = check_games()

                    if game_id == '':

                        game_id, game_waiting = waiting_games()

                else:

                    is_playing = True

                if reply == True and is_playing == False:

                    if query_word == search_new and not game_waiting:

                        board = chess.Board()

                        svgfile = chess.svg.board(board=board)

                        board_file = 'games/' + str(game_id) + '_board.png'

                        svg2png(bytestring=svgfile,write_to=board_file)

                        toot_text = '@'+username + ' ' + new_game_started + '\n'

                        toot_text += '\n'

                        image_id = mastodon.media_post(board_file, "image/png").id

                        toot_id = mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility, media_ids={image_id})

                        toot_url = toot_id.uri

                        new_game(toot_url)

                        update_replies(status_id, username, now)

                    elif query_word == search_new and game_waiting:

                        game_status, white_user, chess_game = join_player()

                        playing_user = white_user

                        next_move(username)

                        board = chess.Board(chess_game)

                        svgfile = chess.svg.board(board=board)

                        board_file = 'games/' + str(game_id) + '_board.png'

                        svg2png(bytestring=svgfile,write_to=board_file)

                        toot_text = '@'+username + ' ' + playing_with + ' ' + white_user + "\n"

                        toot_text += '\n'

                        toot_text += '@'+white_user + ': ' + your_turn + "\n"

                        toot_text += '\n'

                        toot_text += game_name + ': ' + str(game_id) + ' ' + chess_hashtag + '\n'

                        image_id = mastodon.media_post(board_file, "image/png").id

                        mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility, media_ids={image_id})

                        game_moves = board.ply()

                        update_moves(username, game_moves)

                        update_replies(status_id, username, now)

                    elif query_word[:search_send_slicing] == search_send:

                        query_word_length = len(query_word)

                        send_game = query_word[send_game_slicing:query_word_length].replace(' ', '')

                        emailed, game_id, game_found = send_anotation(send_game)

                        if emailed == False and game_found == True:

                            toot_text = '@'+username + send_error

                        elif emailed == True and game_found == True:

                            toot_text = '@'+username + ' ' + game_number_anotations + str(game_id) + ' ' + anotations_sent

                        elif emailed == False and game_found == False:

                            if domain != None:

                                toot_text = '@'+username + ' ' + cant_send_to_fediverse_account

                            else:

                                toot_text = '@'+username + ' ' + game_no_exists + str(game_id) + ' ' + it_not_exists

                        mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility)

                        update_replies(status_id, username, now)

                    elif query_word == search_help:

                        help_text = toot_help()

                        mastodon.status_post(help_text, in_reply_to_id=status_id,visibility=visibility)

                        update_replies(status_id, username, now)

                    else:

                        update_replies(status_id, username, now)

                elif reply and is_playing:

                    if query_word == search_new:

                        toot_text = '@'+username + ' ' + game_already_started + '\n'

                        if black_user != '':

                            toot_text += '@'+white_user + ' / ' + '@'+black_user + '\n'

                        else:

                            toot_text += wait_other_player + '\n'

                        toot_text += '\n'

                        toot_text += game_name + ': ' + str(game_id) + ' ' + chess_hashtag + '\n'

                        board = chess.Board(on_going_game)

                        svgfile = chess.svg.board(board=board)

                        board_file = 'games/' + str(game_id) + '_board.png'

                        svg2png(bytestring=svgfile,write_to=board_file)

                        image_id = mastodon.media_post(board_file, "image/png").id

                        mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility, media_ids={image_id})

                        update_replies(status_id, username, now)

                    elif query_word[:search_move_slicing] == search_move and playing_user == username:

                        board = chess.Board(on_going_game)

                        promoted = False

                        try:

                            piece_square_index = chess.SQUARE_NAMES.index(moving[:2])

                            moving_piece = board.piece_type_at(piece_square_index)

                            if moving_piece == 1:

                                square_index = chess.SQUARE_NAMES.index(moving[2:4])

                                if bool(board.turn == chess.WHITE) == True:

                                    square_rank_trigger = 7

                                elif bool(board.turn == chess.BLACK) == True:

                                    square_rank_trigger = 0

                                if chess.square_rank(square_index) == square_rank_trigger:

                                    promoted = True

                                    if len(moving) == 4:

                                        moving = moving + 'q'

                                not_legal_move = chess.Move.from_uci(moving) not in board.legal_moves

                            else:

                                not_legal_move = chess.Move.from_uci(moving) not in board.legal_moves

                            if not_legal_move:

                                toot_text = '@'+username + ': ' + moving + ' ' + is_not_legal_move + '\n'

                                mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility)

                                update_replies(status_id, username, now)

                            else:

                                check = False

                                playing_user = next_move(username)

                                if bool(board.is_capture(chess.Move.from_uci(moving))):

                                    capture = True

                                    square_capture_index = chess.SQUARE_NAMES.index(moving[2:4])

                                    captured_piece = board.piece_type_at(square_capture_index)

                                    piece_name = get_piece_name(captured_piece)

                                else:

                                    capture = False

                                board.push(chess.Move.from_uci(moving))

                                if bool(board.is_check()):

                                    if username == white_user:

                                        king_square = board.king(chess.BLACK)
                                        check = True

                                    else:

                                        king_square = board.king(chess.WHITE)
                                        check = True

                                if board.is_game_over() == True:

                                    game_moves = board.ply()

                                    close_game()

                                    checkmate = True

                                else:

                                    checkmate = False

                                if check == True and checkmate == False:

                                    toot_text = "@"+playing_user  + " " + username + ' ' + check_done + '\n'

                                elif check == True and checkmate == True:

                                    toot_text = '\n' + check_mate + ' ' + str(game_moves) + ' ' +  check_mate_movements + '\n\n' + the_winner_is + ' ' + "@"+username  + '\n'

                                    toot_text += "\n@"+playing_user + ': ' + well_done + "\n"

                                    toot_text += '\n' + winned_games + "\n"

                                    played_games, wins = get_stats(username)

                                    toot_text += username + ': ' + str(wins) + ' ' + wins_of_many + ' ' + str(played_games) + "\n"

                                    played_games, wins = get_stats(playing_user)

                                    toot_text += playing_user + ': ' + str(wins) + ' ' + wins_of_many + ' ' + str(played_games) + "\n"

                                else:

                                    toot_text = '@'+playing_user + ' ' + your_turn + '\n'

                                if capture == True and checkmate == False:

                                    toot_text += '\n' + lost_piece + ' ' + piece_name + '!\n'

                                toot_text += '\n' + game_name + ': ' + str(game_id) + ' ' + chess_hashtag + '\n'

                                if username == white_user:

                                    if check == True:

                                        svgfile = chess.svg.board(board=board, orientation=chess.BLACK, lastmove=chess.Move.from_uci(moving), check=board.king(chess.BLACK))

                                    else:

                                        svgfile = chess.svg.board(board=board, orientation=chess.BLACK, lastmove=chess.Move.from_uci(moving))

                                else:

                                    if check == True:

                                        svgfile = chess.svg.board(board=board, orientation=chess.WHITE, lastmove=chess.Move.from_uci(moving), check=board.king(chess.WHITE))

                                    else:

                                        svgfile = chess.svg.board(board=board, orientation=chess.WHITE, lastmove=chess.Move.from_uci(moving))

                                board_file = 'games/' + str(game_id) + '_board.png'

                                svg2png(bytestring=svgfile,write_to=board_file)

                                image_id = mastodon.media_post(board_file, "image/png").id

                                toot_id = mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility, media_ids={image_id})

                                toot_url = toot_id.uri

                                board_game = board.fen()

                                update_game(board_game, toot_url)

                                game_moves = board.ply()

                                save_anotation(moving)

                                update_moves(username, game_moves)

                                update_replies(status_id, username, now)

                        except ValueError as v_error:

                            print(v_error)

                            toot_text = '@'+username + ' ' + not_legal_move_str + moving + '!?)\n'

                            mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility)

                            update_replies(status_id, username, now)

                            pass

                        except AssertionError as a_error:

                            print(a_error)

                            toot_text = '@'+username + ' ' + not_legal_move_str + moving + '!?)\n'

                            mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility)

                            update_replies(status_id, username, now)

                            pass

                    elif query_word == search_end:

                        if black_user != '':

                            if username == white_user:

                                toot_text = '@'+username + ' ' + player_leave_game + ' ' + '@'+black_user

                                mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility)

                                close_game()

                                update_replies(status_id, username, now)

                                i += 1

                                continue

                            else:

                                toot_text = '@'+username + ' ' + player_leave_game + ' ' + white_user

                                mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility)

                                close_game()

                                update_replies(status_id, username, now)

                                i += 1

                                continue

                        else:

                            toot_text = '@'+username + ' ' + leave_waiting_game

                            mastodon.status_post(toot_text, in_reply_to_id=status_id, visibility=visibility)

                            close_game()

                            update_replies(status_id, username, now)

                            i += 1

                            continue

                    elif query_word == search_games:

                        player1_name_lst, player2_name_lst, game_status_lst, game_link_lst, next_move_lst = current_games()

                        if len(player1_name_lst) > 0:

                            toot_text = "@"+username + ' ' + started_games + "\n"

                            i = 0
                            while i < len(player1_name_lst):

                                if game_status_lst[i] == 'waiting':

                                    toot_text += '\n' + player1_name_lst[i] + ' / ' + player2_name_lst[i] + '   ' + game_is_waiting + "\n"

                                else:

                                    if next_move_lst[i] == player1_name_lst[i]:

                                        toot_text += '\n*' + player1_name_lst[i] + ' / ' + player2_name_lst[i] + ' ' + game_is_on_going + '\n'

                                    else:

                                        toot_text += '\n' + player1_name_lst[i] + ' / *' + player2_name_lst[i] + ' ' + game_is_on_going + '\n'

                                    if game_link_lst[i] != None:

                                        toot_text += str(game_link_lst[i]) + "\n"

                                i += 1

                            mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility)

                        else:

                            toot_text = '@'+username + ' ' + no_on_going_games + '\n'

                            mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility)

                        update_replies(status_id, username, now)

                    elif query_word[:search_send_slicing] == search_send:

                        query_word_length = len(query_word)

                        send_game = query_word[search_send_slicing:query_word_length].replace(' ', '')

                        emailed, game_id, game_found = send_anotation(send_game)

                        if emailed == False and game_found == True:

                            toot_text = '@'+username + ' ' + send_error

                        elif emailed == True and game_found == True:

                            toot_text = '@'+username + ' ' + game_number_anotations + str(game_id) + ' ' + anotations_sent

                        elif emailed == False and game_found == False:

                            toot_text = '@'+username + ' ' + game_no_exists + str(game_id) + ' ' + it_not_exists

                        mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility)

                        update_replies(status_id, username, now)

                    elif query_word == search_help:

                        help_text = toot_help()

                        mastodon.status_post(help_text, in_reply_to_id=status_id,visibility=visibility)

                        update_replies(status_id, username, now)

                    else:

                        if playing_user == None:

                            toot_text = '@'+username + ' ' + is_not_your_turn + '\n'

                        else:

                            toot_text = '@'+username + ' ' + is_the_turn_of + ' ' + playing_user + "\n"

                        toot_text += '\n'

                        toot_text += game_name + ': ' + str(game_id) + ' ' + chess_hashtag + '\n'

                        board = chess.Board(on_going_game)

                        if username == white_user:

                            svgfile = chess.svg.board(board=board, orientation=chess.BLACK)

                        else:

                            svgfile = chess.svg.board(board=board, orientation=chess.WHITE)

                        board_file = 'games/' + str(game_id) + '_board.png'

                        svg2png(bytestring=svgfile,write_to=board_file)

                        image_id = mastodon.media_post(board_file, "image/png").id

                        mastodon.status_post(toot_text, in_reply_to_id=status_id,visibility=visibility, media_ids={image_id})

                        update_replies(status_id, username, now)


                i += 1

        else:

            usage()