export interface Listing {
  id: number
  title: string
  price: number | null
  currency: string
  price_raw: string
  price_usd: number | null
  time_left: string
  time_left_mins: number | null
  link: string
  score: number
  keyword: string
  site_name: string
  timestamp: string
  price_updated_at: string | null
  ai_match: 1 | 0 | null
  ai_reason: string | null
  location: string | null
  images: string[]              // parsed from JSON string at API layer
  closing_alerts_sent: number[] // parsed from JSON string at API layer
}

export interface Keyword {
  id: number
  term: string
  weight: number
  ai_target: string | null
  min_price: number | null
  max_price: number | null
  sort_order: number
}

export interface TargetSite {
  id: number
  name: string
  url_template: string
  search_selector: string
  enabled: 0 | 1
  max_pages: number
  last_error: string | null
  error_count: number
  consecutive_failures: number
  last_success_at: string | null
  cooldown_until: string | null
  requires_login: 0 | 1
  login_url: string | null
  login_check_selector: string | null
  login_enabled: 0 | 1
  sort_order: number
}

export interface SiteSelectors {
  site_id: number
  confidence: number
  container_sel: string | null
  title_sel: string | null
  price_sel: string | null
  time_sel: string | null
  link_sel: string | null
  next_page_sel: string | null
  stale: boolean
  provider: 'groq' | 'ollama' | null
  generated_at: string | null
}

export interface Stats {
  total_scanned: number
  total_alerts: number
  last_cycle: string
  engine_status: 'Idle' | 'Running' | 'Paused'
  uptime_start: number
  uptime_seconds: number
}

export interface Config {
  key: string
  value: string
}

export interface ScoringRule {
  id: number
  signal: string
  delta: number       // positive = boost, negative = penalty
  category: 'positive' | 'negative' | 'custom'
  notes: string
}