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"""JSON parser for Opta F9 feeds."""
from datetime import datetime
from typing import Any, Optional
from ...base import MissingDataError
from .base import OptaJSONParser, assertget
class F9JSONParser(OptaJSONParser):
"""Extract data from a Opta F9 data stream.
Parameters
----------
path : str
Path of the data file.
"""
def _get_feed(self) -> dict[str, Any]:
for node in self.root:
if "OptaFeed" in node["data"].keys():
return node
raise MissingDataError
def _get_doc(self) -> dict[str, Any]:
f9 = self._get_feed()
data = assertget(f9, "data")
optafeed = assertget(data, "OptaFeed")
optadocument = assertget(optafeed, "OptaDocument")[0]
return optadocument
def _get_stats(self, obj: dict[str, Any]) -> dict[str, Any]:
if "Stat" not in obj:
return {}
stats = {}
statobj = obj["Stat"] if isinstance(obj["Stat"], list) else [obj["Stat"]]
for stat in statobj:
stats[stat["@attributes"]["Type"]] = stat["@value"]
return stats
def _get_name(self, obj: dict[str, Any]) -> Optional[str]:
if "Known" in obj and obj["Known"].strip():
return obj["Known"]
if "First" in obj and "Last" in obj and obj["Last"].strip() or obj["First"].strip():
return (obj["First"] + " " + obj["Last"]).strip()
return None
def extract_games(self) -> dict[int, dict[str, Any]]:
"""Return a dictionary with all available games.
Returns
-------
dict
A mapping between game IDs and the information available about
each game in the data stream.
"""
optadocument = self._get_doc()
attr = assertget(optadocument, "@attributes")
matchdata = assertget(optadocument, "MatchData")
competition = assertget(optadocument, "Competition")
competitionstat = self._get_stats(competition)
venue = assertget(optadocument, "Venue")
matchofficial = assertget(matchdata, "MatchOfficial")
matchinfo = assertget(matchdata, "MatchInfo")
matchstat = self._get_stats(matchdata)
teamdata = assertget(matchdata, "TeamData")
scores = {}
for t in teamdata:
scores[t["@attributes"]["Side"]] = t["@attributes"]["Score"]
game_id = int(assertget(attr, "uID")[1:])
game_dict = {
# Fields required by the base schema
"game_id": game_id,
"competition_id": int(assertget(assertget(competition, "@attributes"), "uID")[1:]),
"season_id": assertget(competitionstat, "season_id"),
"game_day": competitionstat["matchday"] if "matchday" in competitionstat else None,
"game_date": datetime.strptime(
assertget(matchinfo, "Date"), "%Y%m%dT%H%M%S%z"
).replace(tzinfo=None),
# home_team_id=see below
# away_team_id=see below
# Optional fields
"home_score": int(scores["Home"]),
"away_score": int(scores["Away"]),
"duration": int(assertget(matchstat, "match_time")),
"referee": self._get_name(matchofficial["OfficialName"])
if "OfficialName" in matchofficial
else None,
"venue": venue["Name"] if "Name" in venue else None,
"attendance": int(matchinfo["Attendance"]) if "Attendance" in matchinfo else None,
# home_manager=see below
# away_manager=see below
}
for team in teamdata:
teamattr = assertget(team, "@attributes")
side = assertget(teamattr, "Side")
teamid = assertget(teamattr, "TeamRef")
score = assertget(teamattr, "Score")
manager = (
self._get_name(team["TeamOfficial"]["PersonName"])
if "TeamOfficial" in team
else None
)
if side == "Home":
game_dict["home_team_id"] = int(teamid[1:])
game_dict["home_score"] = int(score)
game_dict["home_manager"] = manager
else:
game_dict["away_team_id"] = int(teamid[1:])
game_dict["away_score"] = int(score)
game_dict["away_manager"] = manager
return {game_id: game_dict}
def extract_teams(self) -> dict[int, dict[str, Any]]:
"""Return a dictionary with all available teams.
Returns
-------
dict
A mapping between team IDs and the information available about
each team in the data stream.
"""
optadocument = self._get_doc()
root_teams = assertget(optadocument, "Team")
teams = {}
for team in root_teams:
if "id" in team.keys():
nameobj = team.get("nameObj")
team_id = int(team["id"])
teams[team_id] = {
# Fields required by the base schema
"team_id": team_id,
"team_name": nameobj.get("name"),
}
return teams
def extract_players(self) -> dict[tuple[int, int], dict[str, Any]]:
"""Return a dictionary with all available players.
Returns
-------
dict
A mapping between (game ID, player ID) tuples and the information
available about each player in the data stream.
"""
optadocument = self._get_doc()
attr = assertget(optadocument, "@attributes")
game_id = int(assertget(attr, "uID")[1:])
root_teams = assertget(optadocument, "Team")
lineups = self.extract_lineups()
players = {}
for team in root_teams:
team_id = int(team["@attributes"]["uID"].replace("t", ""))
for player in team["Player"]:
player_id = int(player["@attributes"]["uID"].replace("p", ""))
assert "nameObj" in player["PersonName"]
nameobj = player["PersonName"]["nameObj"]
if not nameobj.get("is_unknown"):
player = {
# Fields required by the base schema
"game_id": game_id,
"team_id": team_id,
"player_id": player_id,
"player_name": self._get_name(player["PersonName"]),
# is_starter=
# minutes_played=
# jersey_number=
# Fields required by the opta schema
# starting_position=
# Optional fields
# height="?",
# weight="?",
# age="?",
}
if player_id in lineups[team_id]["players"]:
player = dict(
**player,
jersey_number=lineups[team_id]["players"][player_id]["jersey_number"],
starting_position=lineups[team_id]["players"][player_id][
"starting_position_name"
],
is_starter=lineups[team_id]["players"][player_id]["is_starter"],
minutes_played=lineups[team_id]["players"][player_id][
"minutes_played"
],
)
players[(game_id, player_id)] = player
return players
def extract_lineups(self) -> dict[int, dict[str, Any]]:
"""Return a dictionary with the lineup of each team.
Raises
------
MissingDataError
If teams data is not available in the stream.
Returns
-------
dict
A mapping between team IDs and the information available about
each team's lineup in the data stream.
"""
optadocument = self._get_doc()
attr = assertget(optadocument, "@attributes")
try:
rootf9 = optadocument["MatchData"]["TeamData"]
except KeyError as e:
raise MissingDataError from e
matchstats = optadocument["MatchData"]["Stat"]
matchstats = [matchstats] if isinstance(matchstats, dict) else matchstats
matchstatsdict = {stat["@attributes"]["Type"]: stat["@value"] for stat in matchstats}
lineups: dict[int, dict[str, Any]] = {}
for team in rootf9:
# lineup attributes
team_id = int(team["@attributes"]["TeamRef"].replace("t", ""))
lineups[team_id] = {"players": {}}
# substitutes
subst = [s["@attributes"] for s in team["Substitution"]]
# red cards
red_cards = {
int(e["@attributes"]["PlayerRef"].replace("p", "")): e["@attributes"]["Time"]
for e in team.get("Booking", [])
if "CardType" in e["@attributes"]
and e["@attributes"]["CardType"] in ["Red", "SecondYellow"]
and "PlayerRef" in e["@attributes"] # not defined if a coach receives a red card
}
for player in team["PlayerLineUp"]["MatchPlayer"]:
attr = player["@attributes"]
player_id = int(attr["PlayerRef"].replace("p", ""))
playerstatsdict = {
stat["@attributes"]["Type"]: stat["@value"] for stat in player["Stat"]
}
sub_on = next(
(
item["Time"]
for item in subst
if "Retired" not in item and item["SubOn"] == f"p{player_id}"
),
matchstatsdict["match_time"] if attr["Status"] == "Sub" else 0,
)
sub_off = next(
(item["Time"] for item in subst if item["SubOff"] == f"p{player_id}"),
matchstatsdict["match_time"]
if player_id not in red_cards
else red_cards[player_id],
)
minutes_played = sub_off - sub_on
lineups[team_id]["players"][player_id] = dict(
jersey_number=attr["ShirtNumber"],
starting_position_name=attr["Position"],
starting_position_id=attr["position_id"],
is_starter=attr["Status"] == "Start",
minutes_played=minutes_played,
**playerstatsdict,
)
return lineups
def extract_teamgamestats(self) -> list[dict[str, Any]]:
"""Return some aggregated statistics of each team.
Raises
------
MissingDataError
If teams data is not available in the stream.
Returns
-------
list(dict)
A dictionary with aggregated team statistics for each team.
"""
optadocument = self._get_doc()
attr = assertget(optadocument, "@attributes")
game_id = int(assertget(attr, "uID")[1:])
try:
rootf9 = optadocument["MatchData"]["TeamData"]
except KeyError as e:
raise MissingDataError from e
teams_gamestats = []
for team in rootf9:
attr = team["@attributes"]
statsdict = self._get_stats(team)
team_gamestats = dict(
game_id=game_id,
team_id=int(attr["TeamRef"].replace("t", "")),
side=attr["Side"],
score=attr["Score"],
shootout_score=attr["ShootOutScore"],
**statsdict,
)
teams_gamestats.append(team_gamestats)
return teams_gamestats
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