frontend/smart-hut/src/components/dashboard/devices/Switch.js

/**
 * Users can add on-off switches. A on-off switch can turn on (or off) lights.
 * If a light has an intensity level, when it gets switched back on, it gets the last available
 * intensity level that was set by the user (or 100% if no such level exists).
 * The user can change the state of a switch through the SmartHut interface.
 */

import React, { Component } from "react";
import { BottomPanel, StyledDiv } from "./styleComponents";
import { Image } from "semantic-ui-react";
import { imageStyle, nameStyle, turnedOnStyle } from "./SwitchStyle";
import { call } from "../../../client_server";
import { RemoteService } from "../../../remote";
import { connect } from "react-redux";

class Switch extends Component {
  constructor(props) {
    super(props);
    this.state = {
      turnedOn: false,
      pointingLights: [],
    };
    this.iconOn = "/img/switchOn.svg";
    this.iconOff = "/img/switchOff.svg";
  }

  getIcon = () => {
    if (this.state.turnedOn) {
      return this.iconOn;
    }
    return this.iconOff;
  };

  onClickDevice = () => {
    this.props.device.on = !this.state.turnedOn;
    let state = "";
    if (this.props.device.on) {
      state = "ON";
    } else {
      state = "OFF";
    }
    let data = {
      type: state,
      id: this.props.device.id,
    };
    call.deviceUpdate(data, "switch/operate").then((res) => {
      if (res.status === 200) {
        this.setState((prevState) => ({ turnedOn: !prevState.turnedOn }));
      }
    });
  };

  componentDidMount() {
    this.setState({
      turnedOn: this.props.device.on,
    });
  }

  render() {
    return (
      <StyledDiv onClick={this.onClickDevice}>
        <Image src={this.getIcon()} style={imageStyle} />
        <span style={nameStyle}>
          {this.props.device.name} ({this.props.device.id})
        </span>

        <BottomPanel
          style={
            this.state.turnedOn
              ? { backgroundColor: "#505bda" }
              : { backgroundColor: "#1a2849" }
          }
        >
          <span style={turnedOnStyle}>
            {this.state.turnedOn ? "ON" : "OFF"}
          </span>
        </BottomPanel>
      </StyledDiv>
    );
  }
}

const mapStateToProps = (state, ownProps) => ({
  device: state.devices[ownProps.id],
});
const SwitchContainer = connect(mapStateToProps, RemoteService)(Switch);
export default SwitchContainer;