/**
 * Create WebSocket handler for Bun server
 * @param {Object} dropApis - Map of dropName -> { websocket }
 * @returns {Object} WebSocket handler
 */
export function createWebSocketHandler(dropApis) {
  return {
    /**
     * Called when a new WebSocket connection is opened
     */
    open(ws) {
      const { dropName } = ws.data
      const dropWs = dropApis[dropName]?.websocket
      
      if (dropWs && dropWs.open) {
        dropWs.open(ws)
      }
      
      // Subscribe to drop-specific channel
      ws.subscribe(dropName)
      
      console.log(`🔌 WebSocket connected: ${dropName}`)
    },
    
    /**
     * Called when a message is received
     */
    message(ws, message) {
      const { dropName } = ws.data
      const dropWs = dropApis[dropName]?.websocket
      
      if (dropWs && dropWs.message) {
        dropWs.message(ws, message)
      }
    },
    
    /**
     * Called when connection is closed
     */
    close(ws, code, reason) {
      const { dropName } = ws.data
      const dropWs = dropApis[dropName]?.websocket
      
      if (dropWs && dropWs.close) {
        dropWs.close(ws, code, reason)
      }
      
      console.log(`🔌 WebSocket disconnected: ${dropName}`)
    },
    
    /**
     * Called when there's an error
     */
    error(ws, error) {
      const { dropName } = ws.data
      const dropWs = dropApis[dropName]?.websocket
      
      if (dropWs && dropWs.error) {
        dropWs.error(ws, error)
      }
      
      console.error(`🔌 WebSocket error (${dropName}):`, error)
    }
  }
}