first (part 3: src directory)

2026-04-16 15:12:27 +03:00
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+import { Injectable, Logger } from '@nestjs/common';
+import { PrismaService } from '../../../database/prisma.service';
+
+@Injectable()
+export class AiFeatureStoreService {
+  private readonly logger = new Logger(AiFeatureStoreService.name);
+
+  constructor(private readonly prisma: PrismaService) {}
+
+  /**
+   * Bir maç için AI özelliklerini hesaplar ve 'match_ai_features' tablosuna yazar.
+   * Bu metod Feeder yeni veri çektiğinde tetiklenmelidir.
+   */
+  async calculateAndSaveFeatures(matchId: string): Promise<void> {
+    const match = await this.prisma.match.findUnique({
+      where: { id: matchId },
+      include: {
+        homeTeam: {
+          include: { homeMatches: { take: 5, orderBy: { mstUtc: 'desc' } } },
+        },
+        awayTeam: {
+          include: { awayMatches: { take: 5, orderBy: { mstUtc: 'desc' } } },
+        },
+      },
+    });
+
+    if (!match || !match.homeTeam || !match.awayTeam) return;
+
+    // 1. Form Score Calculation (0-100)
+    // Son 5 maçtaki galibiyet, beraberlik ve atılan gollerin ağırlıklı ortalaması
+    const homeForm = this.calculateFormScore(match.homeTeam.homeMatches);
+    const awayForm = this.calculateFormScore(match.awayTeam.awayMatches);
+
+    // 2. ELO — Read from team_elo_ratings table (populated by AI Engine compute_elo.py)
+    const homeElo = match.homeTeamId
+      ? await this.getTeamElo(match.homeTeamId)
+      : 1500.0;
+    const awayElo = match.awayTeamId
+      ? await this.getTeamElo(match.awayTeamId)
+      : 1500.0;
+
+    // 3. Missing Player Impact (Sakat/Cezalı etkisi)
+    // Feeder'dan gelen lineups verisindeki eksik as oyuncuları analiz etmeliyiz.
+    // Şimdilik 0.0 (Etkisiz) olarak set ediyoruz, ilerde Lineup analizi buraya eklenecek.
+    const missingImpact = 0.0;
+
+    // 4. Save to Feature Store
+    await this.prisma.footballAiFeature.upsert({
+      where: { matchId },
+      update: {
+        homeElo,
+        awayElo,
+        homeFormScore: homeForm,
+        awayFormScore: awayForm,
+        missingPlayersImpact: missingImpact,
+        updatedAt: new Date(),
+      },
+      create: {
+        matchId,
+        homeElo,
+        awayElo,
+        homeFormScore: homeForm,
+        awayFormScore: awayForm,
+        missingPlayersImpact: missingImpact,
+      },
+    });
+
+    this.logger.debug(
+      `Features calculated for match ${matchId} (Home Form: ${homeForm}, Away Form: ${awayForm})`,
+    );
+  }
+
+  /**
+   * Form Puanı Hesaplama Algoritması (V17 Simplified)
+   * W=30, D=10, L=0 puan. + Gol başına 5 puan (max 15).
+   * Toplam skor 0-100 arasına normalize edilir.
+   */
+  private calculateFormScore(matches: any[]): number {
+    if (!matches || matches.length === 0) return 50; // Nötr form
+
+    let totalPoints = 0;
+    const maxPoints = matches.length * 45; // Max olası puan (30win + 15goal)
+
+    for (const m of matches) {
+      // Skor kontrolü (bazı maçlar oynanmamış olabilir)
+      if (m.scoreHome === null || m.scoreAway === null) continue;
+
+      const isWin = m.scoreHome > m.scoreAway; // Home team context
+      const isDraw = m.scoreHome === m.scoreAway;
+
+      if (isWin) totalPoints += 30;
+      else if (isDraw) totalPoints += 10;
+
+      const goals = Math.min(m.scoreHome, 3); // Max 3 gol katkısı
+      totalPoints += goals * 5;
+    }
+
+    // Normalize to 0-100
+    // Eğer hiç maç oynanmadıysa yine 50 dön.
+    return matches.length > 0 ? (totalPoints / maxPoints) * 100 : 50;
+  }
+
+  /**
+   * team_elo_ratings tablosundan takımın güncel ELO puanını okur.
+   * Kayıt yoksa varsayılan 1500.0 döner.
+   */
+  private async getTeamElo(teamId: string): Promise<number> {
+    const row = await this.prisma.teamEloRating.findUnique({
+      where: { teamId },
+      select: { overallElo: true },
+    });
+    return row?.overallElo ?? 1500.0;
+  }
+}