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iddaai-be/ai-engine/core/engines/player_predictor.py
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"""
Player Predictor Engine - V20 Ensemble Component
Analyzes squad quality, key players, and missing player impact.
Weight: 25% in ensemble
"""
import os
import sys
from typing import Dict, Optional, List
from dataclasses import dataclass
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
from features.squad_analysis_engine import get_squad_analysis_engine
from features.sidelined_analyzer import get_sidelined_analyzer
@dataclass
class PlayerPrediction:
"""Player engine prediction output."""
home_squad_quality: float = 50.0 # 0-100
away_squad_quality: float = 50.0
squad_diff: float = 0.0 # -100 to +100
home_key_players: int = 0
away_key_players: int = 0
home_missing_impact: float = 0.0 # 0-1, how much weaker due to missing players
away_missing_impact: float = 0.0
home_goals_form: int = 0 # Goals in last 5 matches
away_goals_form: int = 0
lineup_available: bool = False
confidence: float = 0.0
def to_dict(self) -> dict:
return {
"home_squad_quality": round(self.home_squad_quality, 1),
"away_squad_quality": round(self.away_squad_quality, 1),
"squad_diff": round(self.squad_diff, 1),
"home_key_players": self.home_key_players,
"away_key_players": self.away_key_players,
"home_missing_impact": round(self.home_missing_impact, 2),
"away_missing_impact": round(self.away_missing_impact, 2),
"home_goals_form": self.home_goals_form,
"away_goals_form": self.away_goals_form,
"lineup_available": self.lineup_available,
"confidence": round(self.confidence, 1)
}
class PlayerPredictorEngine:
"""
Player/Squad-based prediction engine.
Analyzes:
- Starting 11 quality
- Key player availability (top scorers)
- Missing player impact
- Recent goalscoring form per player
"""
def __init__(self):
self.squad_engine = get_squad_analysis_engine()
self.sidelined_analyzer = get_sidelined_analyzer()
print("✅ PlayerPredictorEngine initialized")
def predict(self,
match_id: str,
home_team_id: str,
away_team_id: str,
home_lineup: List[str] = None,
away_lineup: List[str] = None,
sidelined_data: Dict = None) -> PlayerPrediction:
"""
Generate player-based prediction.
Args:
match_id: Match ID for lineup lookup
home_team_id: Home team ID
away_team_id: Away team ID
home_lineup: Optional list of home player IDs
away_lineup: Optional list of away player IDs
Returns:
PlayerPrediction with squad analysis
"""
# Get squad features
if home_lineup and away_lineup:
# Use provided lineups (for live matches)
home_analysis = self.squad_engine.analyze_squad_from_list(
home_lineup, home_team_id
)
away_analysis = self.squad_engine.analyze_squad_from_list(
away_lineup, away_team_id
)
lineup_available = True
# Build features dict from analysis objects
features = {
"home_starting_11": home_analysis.starting_count or 11,
"home_goals_last_5": home_analysis.total_goals_last_5,
"home_assists_last_5": home_analysis.total_assists_last_5,
"home_key_players": home_analysis.key_players_count,
"away_starting_11": away_analysis.starting_count or 11,
"away_goals_last_5": away_analysis.total_goals_last_5,
"away_assists_last_5": away_analysis.total_assists_last_5,
"away_key_players": away_analysis.key_players_count,
}
elif match_id:
# Try to get from database
try:
features = self.squad_engine.get_features(
match_id, home_team_id, away_team_id
)
lineup_available = (
features.get("home_starting_11", 0) >= 11 and
features.get("away_starting_11", 0) >= 11
)
except Exception:
features = self.squad_engine.get_features_without_match(
home_team_id, away_team_id
)
lineup_available = False
else:
features = self.squad_engine.get_features_without_match(
home_team_id, away_team_id
)
lineup_available = False
# Extract features
home_goals = features.get("home_goals_last_5", 0)
away_goals = features.get("away_goals_last_5", 0)
home_key = features.get("home_key_players", 0)
away_key = features.get("away_key_players", 0)
# Calculate squad quality (0-100)
# Based on: goals scored, key players, assists
home_quality = min(100, 50 + (home_goals * 3) + (home_key * 5) +
features.get("home_assists_last_5", 0) * 2)
away_quality = min(100, 50 + (away_goals * 3) + (away_key * 5) +
features.get("away_assists_last_5", 0) * 2)
# Squad difference
squad_diff = home_quality - away_quality
# Missing player impact
# Priority: sidelined data (position-weighted) > lineup count (basic)
if sidelined_data:
home_impact, away_impact = self.sidelined_analyzer.analyze_match(sidelined_data)
home_missing = home_impact.impact_score
away_missing = away_impact.impact_score
sidelined_available = True
else:
# Fallback: basic lineup count method
expected_xi = 11
actual_home_xi = features.get("home_starting_11", 11)
actual_away_xi = features.get("away_starting_11", 11)
home_missing = (expected_xi - actual_home_xi) / expected_xi if actual_home_xi < expected_xi else 0
away_missing = (expected_xi - actual_away_xi) / expected_xi if actual_away_xi < expected_xi else 0
sidelined_available = False
# Confidence: more data sources = higher confidence
confidence = 70.0 if lineup_available else 35.0
if home_goals + away_goals > 10:
confidence += 15
if sidelined_available:
confidence += self.sidelined_analyzer.config.get("sidelined.confidence_boost", 10)
if not lineup_available:
confidence -= 5.0
return PlayerPrediction(
home_squad_quality=home_quality,
away_squad_quality=away_quality,
squad_diff=squad_diff,
home_key_players=home_key,
away_key_players=away_key,
home_missing_impact=home_missing,
away_missing_impact=away_missing,
home_goals_form=home_goals,
away_goals_form=away_goals,
lineup_available=lineup_available,
confidence=max(5.0, confidence)
)
def get_1x2_modifier(self, prediction: PlayerPrediction) -> Dict[str, float]:
"""
Calculate 1X2 probability modifiers based on squad analysis.
Returns modifiers to apply to base probabilities.
"""
diff = prediction.squad_diff / 100 # -1 to +1
return {
"home_modifier": 1.0 + (diff * 0.3), # Up to +/-30%
"away_modifier": 1.0 - (diff * 0.3),
"draw_modifier": 1.0 - abs(diff) * 0.2 # Less draw if big diff
}
# Singleton
_engine: Optional[PlayerPredictorEngine] = None
def get_player_predictor() -> PlayerPredictorEngine:
global _engine
if _engine is None:
_engine = PlayerPredictorEngine()
return _engine
if __name__ == "__main__":
engine = get_player_predictor()
print("\n🧪 Player Predictor Engine Test")
print("=" * 50)
pred = engine.predict(
match_id=None,
home_team_id="test_home",
away_team_id="test_away"
)
print(f"\n📊 Prediction:")
for k, v in pred.to_dict().items():
print(f" {k}: {v}")