MVG Live custom card for Home Assistant Lovelace UI

mvg-card.js

class MvgCard extends HTMLElement {
  set hass(hass) {

    const entityId = this.config.entity;
    const state = hass.states[entityId];
    const name = state.attributes['friendly_name']

    if (!this.content) {
      const card = document.createElement('ha-card');
      card.header = name;
      this.content = document.createElement('div');
      const style = document.createElement('style');
      style.textContent = `
        table {
          width: 100%;
          padding: 6px 14px;
        }
        td {
          padding: 3px 0px;
        }
        td.shrink {
          white-space:nowrap;
        }
        td.expand {
          width: 99%
        }
        span.line {
          font-weight: bold;
          font-size:0.9em;
          padding:3px 8px 2px 8px;
          color: #fff;
          background-color: #888;
          margin-right:0.7em;
        }
        span.SBAHN {
          border-radius:999px;
        }
        span.UBAHN {
        }
        span.TRAM {
          background-color: #ee1c25;
        }
        span.BUS {
          background-color: #005f5f;
        }
        span.U1 {
          background-color: #3c7233;
        }
        span.U2 {
          background-color: #c4022e;
        }
        span.U3 {
          background-color: #ed6720;
        }
        span.U4 {
          background-color: #00ab85;
        }
        span.U5 {
          background-color: #be7b00;
        }
        span.U6 {
          background-color: #0065af;
        }
        span.U7 {
          background-color: #c4022e;
        }
        span.U8 {
          background-color: #ed6720;
        }
        span.S1 {
          background-color: #16c0e9;
        }
        span.S2 {
          background-color: #71bf44;
        }
        span.S3 {
          background-color: #7b107d;
        }
        span.S4 {
          background-color: #ee1c25;
        }
        span.S5 {
          background-color: #ffcc00;
          color: black;
        }
        span.S6 {
          background-color: #008a51;
        }
        span.S7 {
          background-color: #963833;
        }
        span.S8 {
          background-color: black;
          color: #ffcb06;
        }
        span.S20 {
          background-color: #f05a73;
        }
        `
      card.appendChild(style);
      card.appendChild(this.content);
      this.appendChild(card);
    }

    var tablehtml = `
    <table>
    `
    for (const attributes of state.attributes['departures']) {
      const icon = attributes['icon']
      const destination = attributes['destination']
      const linename = attributes['label']
      const product = attributes['product']
      const time = attributes['departureTimeMinutes']
      const backgroundcolor = attributes['lineBackgroundColor']


      const iconel = document.createElement('ha-icon');
      iconel.setAttribute('icon', icon);
      const iconHTML = iconel.outerHTML;

      tablehtml += `
          <tr>
            <td class="shrink" style="text-align:center;"><span class="line ${product} ${linename}" style="background-color: ${backgroundcolor};">${linename}</span></td>
            <td class="expand">${destination}</td>
            <td class="shrink" style="text-align:right;">${time}</td>
          </tr>
      `;
    }
    tablehtml += `
    </table>
    `

    this.content.innerHTML = tablehtml
  }

  setConfig(config) {
    if (!config.entity) {
      throw new Error('You need to define an entity');
    }
    this.config = config;
  }

  getCardSize() {
    return 1;
  }
}

customElements.define('mvg-card', MvgCard);

Creating my own mvg Home Assistant integration based on the new mvg.de API. The new API returns a lineBackgroundColor.