react-native-esc-pos-printer/src/printer/utils/parsers/parsePrinterSettings.ts

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import {
  PrinterGetSettingsType,
  GetPrinterSettingsPaperWidthValuesMapping,
  GetPrinterSettingsPrintDencityValuesMapping,
  GetPrinterSettingsPrintSpeendValuesMapping,
} from '../../constants';
import type {
  PrinterSettingsResponse,
  PrinterSettingsRawResponse,
} from '../../types';

export function parsePrinterSettings(
  response: PrinterSettingsRawResponse
): PrinterSettingsResponse {
  let valueMapping = GetPrinterSettingsPaperWidthValuesMapping;

  if (response.type === PrinterGetSettingsType.PRINTER_SETTING_PRINTDENSITY) {
    valueMapping = GetPrinterSettingsPrintDencityValuesMapping;
  } else if (
    response.type === PrinterGetSettingsType.PRINTER_SETTING_PRINTSPEED
  ) {
    valueMapping = GetPrinterSettingsPrintSpeendValuesMapping;
  }

  return {
    typeCode: response.type,
    type: PrinterGetSettingsType[response.type],
    value: valueMapping[response.value],
  };
}