data-type.js

export default class DataType {
  /**
   * @param name
   * @param get
   * @param set
   */
  constructor({ name, get, set }) {
    this.name = name;
    this.get = get ?? (v => v);
    this.set = set ?? (v => v);
  }
}

export const DataTypes = {
  ARRAY(Type) {
    return new DataType({
      name: 'ARRAY',
      get(v) {
        return v.split(/[\r\n]+/).map(row => Type.get(row)).filter(v => v !== '');
        },
      set(v) {
        return v.map(row => Type.set(row)).join('\n');
        },
    });
  },
  STRING: new DataType({
    name: 'STRING',
    get(v) { return v; },
    set(v) { return String(v); },
  }),
  PERCENTAGE: new DataType({
    name: 'PERCENTAGE',
    get(v) { return Number(((v || 0) * 100).toFixed(8)); },
    set(v) { return (v || 0) / 100; },
  }),
  NUMBER: new DataType({
    name: 'NUMBER',
    get(v) { return Number(v || 0); },
    set(v) { return (v || 0); },
  }),
  BOOLEAN: new DataType({
    name: 'BOOLEAN',
    get(v) { return v === 1; },
    set(v) { return v ? 1 : 0; },
  }),
  JSON: new DataType({
    name: 'JSON',
    get(v) { return JSON.parse(v); },
    set(v) { return JSON.stringify(v); },
  }),
  DATE: new DataType({
    name: 'DATE',
    get(v) {
      const [mm, dd, yyyy] = v.split('/');
      return [yyyy, mm, dd].join('-');
    },
    set(v) {
      const  [yyyy, mm, dd] = v.split('-');
      return [mm, dd, yyyy].join('/');
    },
  }),
  DATETIME: new DataType({
    name: 'DATETIME',
    get(v) {
      const [date, time] = v.split(' ');
      const [mm, dd, yyyy] = date.split('/');
      return `${yyyy}-${mm}-${dd}T${time}`;
    },
    set(v) {
      const [date, time] = v.split('T');
      const  [yyyy, mm, dd] = date.split('-');
      return `${mm}/${dd}/${yyyy} ${time}`;
    },
  })
};