#!/usr/bin/env python
# 
# tournament.py -- implementation of a Swiss-system tournament
#

import psycopg2


def connect():
    """Connect to the PostgreSQL database.  Returns a database connection."""
    return psycopg2.connect("dbname=tournament")

def deleteEvent(id):
    """Remove an event and all its related data from the database, without 
    erasing registered players."""

def deleteMatches():
    """Remove all the match records from the database."""


def deletePlayers():
    """Remove all the player records from the database."""

def registerEvent(name, event_date):
    """Adds a new event to the tournament database.
  
    The database assigns a unique serial id number for the event. 
  
    Args:
      name: the event's full name (need not be unique).
      event_date: this date could be in a future time.
    """

def countPlayers():
    """Returns the number of players currently registered."""


def registerPlayer(name):
    """Adds a player to the tournament database.
  
    The database assigns a unique serial id number for the player.  (This
    should be handled by your SQL database schema, not in your Python code.)
  
    Args:
      name: the player's full name (need not be unique).
    """

def playerStandings():
    """Returns a list of the players and their win records, sorted by wins.

    The first entry in the list should be the player in first place, 
    or a player tied for first place if there is currently a tie.

    Returns:
      A list of tuples, each of which contains (id, name, wins, matches):
        id: the player's unique id (assigned by the database)
        name: the player's full name (as registered)
        wins: the number of matches the player has won
        matches: the number of matches the player has played
    """


def reportMatch(winner, loser):
    """Records the outcome of a single match between two players.

    Args:
      winner:  the id number of the player who won
      loser:  the id number of the player who lost
    """
 
 
def swissPairings():
    """Returns a list of pairs of players for the next round of a match.
  
    Assuming that there are an even number of players registered, each player
    appears exactly once in the pairings.  Each player is paired with another
    player with an equal or nearly-equal win record, that is, a player adjacent
    to him or her in the standings.
  
    Returns:
      A list of tuples, each of which contains (id1, name1, id2, name2)
        id1: the first player's unique id
        name1: the first player's name
        id2: the second player's unique id
        name2: the second player's name
    """



#!/usr/bin/env python
# 
# tournament.py -- implementation of a Swiss-system tournament
#

import psycopg2


def connect():
    """Connect to the PostgreSQL database.  Returns a database connection."""
    return psycopg2.connect("dbname=tournament")

def delete_event(id):
    """Remove an event and all its related data from the database, without 
    erasing registered players."""

def delete_matches():
    """Remove all the match records from the database."""


def delete_players():
    """Remove all the player records from the database."""

def registerEvent(name, event_date):
    """Adds a new event to the tournament database.
  
    The database assigns a unique serial id number for the event. 
  
    Args:
      name: the event's full name (need not be unique).
      event_date: this date could be in a future time.
    """

def count_players():
    """Returns the number of players currently registered."""


def register_player(name):
    """Adds a player to the tournament database.
  
    The database assigns a unique serial id number for the player.  (This
    should be handled by your SQL database schema, not in your Python code.)
  
    Args:
      name: the player's full name (need not be unique).
    """

def player_standings():
    """Returns a list of the players and their win records, sorted by wins.

    The first entry in the list should be the player in first place, 
    or a player tied for first place if there is currently a tie.

    Returns:
      A list of tuples, each of which contains (id, name, wins, matches):
        id: the player's unique id (assigned by the database)
        name: the player's full name (as registered)
        wins: the number of matches the player has won
        matches: the number of matches the player has played
    """


def report_match(winner, loser):
    """Records the outcome of a single match between two players.

    Args:
      winner:  the id number of the player who won
      loser:  the id number of the player who lost
    """
 
 
def swiss_pairings():
    """Returns a list of pairs of players for the next round of a match.
  
    Assuming that there are an even number of players registered, each player
    appears exactly once in the pairings.  Each player is paired with another
    player with an equal or nearly-equal win record, that is, a player adjacent
    to him or her in the standings.
  
    Returns:
      A list of tuples, each of which contains (id1, name1, id2, name2)
        id1: the first player's unique id
        name1: the first player's name
        id2: the second player's unique id
        name2: the second player's name
    """



Refactor of method's names to satisfy python style guide.