import { I2CDevice as Device, map, changed, isPlainObject, to, merge} from '@uci/i2c-device'
import commands from './commands'

class MCP230XX extends Device {
  constructor(opts) {
    super(opts)

    this.chip17 = opts.chip17
    this.chipCfg = opts.chipCfg || 'default'
    this.pinsCfg = opts.pinsCfg || this.chip17 ? [{port:'A', pins:'all'},{port:'B', pins:'all'}] : [{pins:'all'}]

    this.commands = this.bindFuncs(commands)
    this.addNamespace('commands', 's') // allow access to commands via socket/server

    this.ready.addObserver('mcp:configure',this.ready.getObserver('i2c:device:ack').pipe(
      map(async ready => {
        if (ready) {
          let res = await this.commands.chip.cfg({cfg:this.chipCfg})
          if (!res.error) {
            let res = await this.commands.pin.cfgs({configs:this.pinsCfg})
            return res.error? false : true
          } return false
        }
        return false
      })
    ))

  } // end contructor

} // end of MCP230XX Class

export default MCP230XX
export {MCP230XX, map, changed, isPlainObject, to, merge}