ListAdapter

ListAdapter.js

/* The function takes some set of data (preferable structural types), and assuming some
* default expectations of output (in my case, fields to be 'text' and 'value - returns back adapter structure */


/* Used GOF Patterns - Adapter and Strategy */

export default function adaptToList(data = [], textField = '', valueField = '') {
  if (!data.length) {
    return [];
  }

  return data.map(item => {
    if (typeof item === 'object') {
      if (Array.isArray(item)) {
        return nestedArrayStrategy(item);
      } else {
        return objectStrategy(item, textField, valueField);
      }
    } else {
      return primitiveStrategy(item);
    }
  });
};

function nestedArrayStrategy(item) {
  return {
    text: item[0],
    value: item[1],
  };
}

function objectStrategy(item = {}, textField = '', valueField = '') {
  if (!textField || !valueField) {
    if (item.text && item.value) {
      return {
        text: item.text,
        value: item.value,
      };
    }

    return {};
  }

  return {
    text: item[textField],
    value: item[valueField],
  };
}

function primitiveStrategy(item = '') {
  return {
    text: item,
    value: item,
  };
}