xonstat/views/helpers.py

   1 import logging
   2 import sqlalchemy.sql.expression as expr
   3 from datetime import datetime
   4 from xonstat.models import *
   5 from xonstat.util import *
   6
   7 log = logging.getLogger(__name__)
   8
   9 class RecentGame(object):
  10     '''
  11     This is a helper class to facilitate showing recent games
  12     data within mako. The idea is to take the results of a query
  13     and transform it into class members easily accessible later.
  14     It is like a namedtuple but a little easier to form.
  15
  16     The constructor takes a query row that has been fetched, and
  17     it requires the following columns to be present in the row:
  18
  19         game_id, game_type_cd, winner, create_dt, server_id, server_name,
  20         map_id, map_name, player_id, nick, rank, team
  21
  22     The following columns are optional:
  23
  24         elo_delta
  25
  26     This class is meant to be used in conjunction with recent_games_q,
  27     which will return rows matching this specification.
  28     '''
  29     def __init__(self, row):
  30         self.game_id = row.game_id
  31         self.game_type_cd = row.game_type_cd
  32         self.winner = row.winner
  33         self.create_dt = row.create_dt
  34         self.fuzzy_date = pretty_date(row.create_dt)
  35         self.epoch = timegm(row.create_dt.timetuple())
  36         self.server_id = row.server_id
  37         self.server_name = row.server_name
  38         self.map_id = row.map_id
  39         self.map_name = row.map_name
  40         self.player_id = row.player_id
  41         self.nick = row.nick
  42         self.nick_html_colors = html_colors(row.nick)
  43         self.rank = row.rank
  44         self.team = row.team
  45
  46         try:
  47             self.elo_delta = row.elo_delta
  48         except:
  49             self.elo_delta = None
  50
  51
  52 def recent_games_q(server_id=None, map_id=None, player_id=None, cutoff=None):
  53     '''
  54     Returns a SQLA query of recent game data. Parameters filter
  55     the results returned if they are provided. If not, it is
  56     assumed that results from all servers and maps is desired.
  57
  58     The cutoff parameter provides a way to limit how far back to
  59     look when querying. Only games that happened on or after the
  60     cutoff (which is a datetime object) will be returned.
  61     '''
  62     recent_games_q = DBSession.query(Game.game_id, Game.game_type_cd,
  63             Game.winner, Game.create_dt, Server.server_id,
  64             Server.name.label('server_name'), Map.map_id,
  65             Map.name.label('map_name'), PlayerGameStat.player_id,
  66             PlayerGameStat.nick, PlayerGameStat.rank, PlayerGameStat.team,
  67             PlayerGameStat.elo_delta).\
  68             filter(Game.server_id==Server.server_id).\
  69             filter(Game.map_id==Map.map_id).\
  70             filter(Game.game_id==PlayerGameStat.game_id).\
  71             order_by(expr.desc(Game.create_dt))
  72
  73     # the various filters provided get tacked on to the query
  74     if server_id is not None:
  75         recent_games_q = recent_games_q.\
  76             filter(Server.server_id==server_id)
  77
  78     if map_id is not None:
  79         recent_games_q = recent_games_q.\
  80             filter(Map.map_id==map_id)
  81
  82     if player_id is not None:
  83         recent_games_q = recent_games_q.\
  84             filter(PlayerGameStat.player_id==player_id)
  85     else:
  86         recent_games_q = recent_games_q.\
  87             filter(PlayerGameStat.rank==1)
  88
  89     if cutoff is not None:
  90         right_now = datetime.utcnow()
  91         recent_games_q = recent_games_q.\
  92             filter(expr.between(Game.create_dt, cutoff, right_now))
  93
  94     return recent_games_q