// Utility functions for serial communication and UWB data processing

export interface SerialPortInfo {
  path: string
  manufacturer?: string
  serialNumber?: string
  pnpId?: string
  locationId?: string
  productId?: string
  vendorId?: string
}

export class UWBDataProcessor {
  private static instance: UWBDataProcessor
  private dataBuffer: string = ''
  
  static getInstance(): UWBDataProcessor {
    if (!UWBDataProcessor.instance) {
      UWBDataProcessor.instance = new UWBDataProcessor()
    }
    return UWBDataProcessor.instance
  }

  // Process incoming serial data stream
  processDataStream(chunk: string): string[] {
    this.dataBuffer += chunk
    const lines: string[] = []
    
    // Split on line endings
    const parts = this.dataBuffer.split(/\r?\n/)
    
    // Keep last incomplete line in buffer
    this.dataBuffer = parts.pop() || ''
    
    // Return complete lines
    return parts.filter(line => line.trim().length > 0)
  }

  // Check if ESP32 device based on port info
  static isESP32Device(port: SerialPortInfo): boolean {
    const esp32Vendors = ['10C4', '1A86', '0403'] // Silicon Labs, QinHeng, FTDI
    const esp32Manufacturers = ['Silicon Labs', 'FTDI', 'QinHeng Electronics']
    
    return (
      (port.vendorId && esp32Vendors.includes(port.vendorId)) ||
      (port.manufacturer && esp32Manufacturers.some(m => 
        port.manufacturer?.includes(m)
      ))
    )
  }

  // Validate UWB command format
  static validateUWBCommand(command: string): boolean {
    const validCommands = [
      'AT?', 'AT+GETVER?', 'AT+RESTART', 'AT+RESTORE', 'AT+SAVE',
      'AT+SETCFG=', 'AT+GETCFG?', 'AT+SETANT=', 'AT+GETANT?',
      'AT+SETCAP=', 'AT+GETCAP?', 'AT+SETRPT=', 'AT+GETRPT?',
      'AT+SLEEP=', 'AT+SETPOW=', 'AT+GETPOW?', 'AT+DATA=',
      'AT+RDATA', 'AT+SETPAN=', 'AT+GETPAN?'
    ]
    
    return validCommands.some(cmd => 
      command.startsWith(cmd) || command === cmd
    )
  }

  // Clear data buffer
  clearBuffer(): void {
    this.dataBuffer = ''
  }
}