types.ts

export interface Product {
  id: string;
  name: string;
  description: string;
  price: number;
  image: string;
  category: 'Phone' | 'Laptop' | 'Tablet' | 'Watch' | 'Audio' | 'Gaming' | 'Camera' | 'Drone' | 'Smart Home';
  condition: 'Mint' | 'Good' | 'Fair' | 'Poor';
  location: string; // Simplified for demo (e.g., "City, State")
  sellerId: string;
  sellerName: string;
  marketBadge?: string; // AI-generated badge like "Great Deal", "Trending"
}

export interface SwapAssessment {
  estimatedCondition: string;
  marketValue: number;
  tradeInValue: number;
  topUpAmount: number;
  reasoning: string;
  sellerProfitMargin: number; // Internal metric
}

export interface Message {
  id: string;
  sender: 'buyer' | 'seller';
  text: string;
  timestamp: number;
  isOffer?: boolean;
  offerAmount?: number;
}

export interface Negotiation {
  id: string;
  productId: string;
  messages: Message[];
  status: 'active' | 'accepted' | 'rejected';
}

export type ViewState = 'market' | 'sell' | 'negotiations' | 'cart' | 'profile';