utils/echarts.js

import moment from 'moment'

/**
 * Used by diagnostics module
 * Expects echarts serie data item value to be [timestamp, value]
 * @param {String} unit i.g 'km'
 * @param {Object} options.i18n i18n instance
 * @returns {Object} echart series item tooltip formatter handler
 */
export function createEchartDateValueTooltipFormatter(unit = '', options = {}) {
  return (params) => {
    return `${moment(params.value[0]).format('DD/MM/YYYY HH:mm:ss')}
      <br/>
      ${params.value[1] !== undefined ? params.value[1] : ''} ${
      options.i18n !== undefined && options.i18n.te(unit)
        ? options.i18n.t(unit)
        : unit
    }
      ${options.html || ''}
      `
  }
}