export interface Subscription {
  id: string;
  name: string;
  cost: number;
  billingCycle: 'monthly' | 'yearly' | 'weekly';
  category: string;
  url?: string;
  createdAt: string;
  history: CostHistoryPoint[];
}

export interface CostHistoryPoint {
  date: string;
  amount: number;
}

export interface Budget {
  monthlyLimit: number;
  alertThreshold: number;
}

export interface ForecastResult {
  nextMonthForecast: number;
  trendDirection: 'up' | 'down' | 'stable';
  trendPercent: number;
  confidence: 'high' | 'medium' | 'low';
  breakdown: CategoryBreakdown[];
  alertTriggered: boolean;
  alertMessage?: string;
}

export interface CategoryBreakdown {
  category: string;
  currentSpend: number;
  forecastSpend: number;
  percentOfTotal: number;
}

export interface AppState {
  subscriptions: Subscription[];
  budget: Budget;
}