node-red-contrib-blynk-ws/nodes/blynk-ws-style-btn.js

Node Red integration with Blynk App and Server through websockets

module.exports = (RED) => {
  function BlynkStyleBtnNode(n) {
    RED.nodes.createNode(this, n);
    const node = this;
    this.client = n.client;
    this.pin = n.pin;
    this.prop = n.prop;
    this.onlabel = n.onlabel;
    this.offlabel = n.offlabel;
    this.oncolor = n.oncolor;
    this.onbackcolor = n.onbackcolor;
    this.offcolor = n.offcolor;
    this.offbackcolor = n.offbackcolor;
    this.nodeType = 'style-btn';

    this.connected_label = RED._('blynk-ws-style-btn.status.connected-fixed') + this.pin;

    this.blynkClient = RED.nodes.getNode(this.client);
    if (this.blynkClient) {
      this.blynkClient.registerInputNode(this);
      this.blynkClient.on('opened', (n) => { // eslint-disable-line no-shadow
        node.status({
          fill: 'yellow',
          shape: 'dot',
          text: RED._('blynk-ws-style-btn.status.connecting') + n,
        });
      });
      this.blynkClient.on('connected', () => {
        node.status({
          fill: 'green',
          shape: 'dot',
          text: node.connected_label,
        });
      });
      this.blynkClient.on('error', () => {
        node.status({
          fill: 'red',
          shape: 'ring',
          text: 'blynk-ws-style-btn.status.error',
        });
      });
      this.blynkClient.on('closed', () => {
        node.status({
          fill: 'red',
          shape: 'ring',
          text: 'blynk-ws-style-btn.status.disconnected',
        });
      });
      this.blynkClient.on('disabled', () => {
        node.status({
          fill: 'red',
          shape: 'dot',
          text: 'blynk-ws-style-btn.status.disabled',
        });
      });
    } else {
      this.error(RED._('blynk-ws-style-btn.errors.missing-conf'));
    }

    this.on('input', (msg, done) => {
      // no input operation if client not connected or disabled
      if (!node.blynkClient || !node.blynkClient.logged) {
        return;
      }

      if (msg.hasOwnProperty('payload') && msg.hasOwnProperty('topic')) {
        const topic = RED.util.ensureString(msg.topic);

        // virtualwrite to node
        if (topic !== 'write-property') {
          let payload = RED.util.ensureString(msg.payload);
          if (payload === 'true') payload = '1';
          if (payload === 'false') payload = '0';

          node.blynkClient.virtualWrite(node.pin, payload);
          return;
        }

        // set property to node
        let prop = node.prop;
        const pin = node.pin;
        let msgkey;

        if (msg.hasOwnProperty('prop')) {
          prop = RED.util.ensureString(msg.prop);
        }
        if (prop !== '1') { // fixed multiple property
          if (prop === '') {
            node.warn(RED._('blynk-ws-style-btn.warn.bycode'));
            return;
          }

          if (node.blynkClient.multi_cmd) {
            msgkey = node.blynkClient.startMsgMulti();
          }

          node.blynkClient.setProperty(pin, 'onLabel', this.onlabel, msgkey);
          node.blynkClient.setProperty(pin, 'offLabel', this.offlabel, msgkey);
          node.blynkClient.setProperty(pin, 'onColor', this.oncolor, msgkey);
          node.blynkClient.setProperty(pin, 'offColor', this.offcolor, msgkey);
          node.blynkClient.setProperty(pin, 'onBackColor', this.onbackcolor, msgkey);
          node.blynkClient.setProperty(pin, 'offBackColor', this.offbackcolor, msgkey);

          if (node.blynkClient.multi_cmd) {
            node.blynkClient.sendMsgMulti(msgkey);
          }
        } else { // multiple property by code
          if (node.blynkClient.multi_cmd) {
            msgkey = node.blynkClient.startMsgMulti();
          }

          // buttons and styled buttons label
          if (msg.hasOwnProperty('onlabel') || msg.hasOwnProperty('offlabel')) {
            if (msg.hasOwnProperty('onlabel')) {
              node.blynkClient.setProperty(pin, 'onLabel', RED.util.ensureString(msg.onlabel), msgkey);
            }
            if (msg.hasOwnProperty('offlabel')) {
              node.blynkClient.setProperty(pin, 'offLabel', RED.util.ensureString(msg.offlabel), msgkey);
            }
          }
          // styled buttons color (need server v0.36.2)
          if (msg.hasOwnProperty('onColor') || msg.hasOwnProperty('offColor')
             || msg.hasOwnProperty('onBackColor') || msg.hasOwnProperty('offBackColor')) {
            if (msg.hasOwnProperty('onColor')) {
              node.blynkClient.setProperty(pin, 'onColor', RED.util.ensureString(msg.onColor), msgkey);
            }
            if (msg.hasOwnProperty('offColor')) {
              node.blynkClient.setProperty(pin, 'offColor', RED.util.ensureString(msg.offColor), msgkey);
            }
            if (msg.hasOwnProperty('onBackColor')) {
              node.blynkClient.setProperty(pin, 'onBackColor', RED.util.ensureString(msg.onBackColor), msgkey);
            }
            if (msg.hasOwnProperty('offBackColor')) {
              node.blynkClient.setProperty(pin, 'offBackColor', RED.util.ensureString(msg.offBackColor), msgkey);
            }
          }

          if (node.blynkClient.multi_cmd) {
            node.blynkClient.sendMsgMulti(msgkey);
          }
        }
      }

      if (done) {
        done();
      }
    });

    this.on('close', () => {
      if (node.blynkClient) {
        node.blynkClient.removeInputNode(node);
      }
    });
  }

  RED.nodes.registerType('blynk-ws-style-btn', BlynkStyleBtnNode);
};