# All files PinCode.js

95.12% Statements 39/41
75% Branches 9/12
87.5% Functions 14/16
100% Lines 39/39

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     /* eslint jsx-a11y/aria-role: 0 */

    import { useCallback, useState } from "react";
    import axios from 'axios';
    import useWebSocket from 'react-use-websocket';
    import './PinCode.css';

    const websocketUrl = `${process.env.REACT_APP_WS_URL}/ws`;
    const PinCodeUpdateValue = 255;

    const apiFetchPinCode = async () => {
      return await axios.get(
        `${process.env.REACT_APP_BASE_URL}/pin_code`,
      ).then(res => res.data);
    }

    const apiFetchQrCode = async () => {
      return await axios.get(
        `${process.env.REACT_APP_BASE_URL}/pin_code/qr_code`,
      ).then(res => res.data);
    }

    const Animate = ({ children, on, transition }) => {
      return (on === undefined)
        ? <>{children}</>
        : <span className={transition} key={on}>{children}</span>
    }

    export const PinCode = () => {
      const [ pinCode, setPinCode ] = useState();
      const [ qrCode, setQrCode ] = useState();

      const fetchPinCode = useCallback(async () => {
        const data = await apiFetchPinCode().catch(error => console.log(error));
        Eif (data) {
          setPinCode(data.pin);
        }
      }, [setPinCode]
      );

      const fetchQrCode = useCallback(async () => {
        const data = await apiFetchQrCode().catch(error => console.log(error));
        Eif (data) {
          let parser = new DOMParser();
          let qr_code = parser.parseFromString(data, "image/svg+xml").documentElement.outerHTML;
          setQrCode(qr_code);
        }
      }, [setQrCode]
      );

      const onWsOpen = () => {
        console.log('websocket opened');
        fetchPinCode();
        fetchQrCode();
      };

      const onWsMessage = (event) => {
        const message = JSON.parse(event.data);
        console.log(`websocket message ${message.pin_code}`);
        if (message.cmd === PinCodeUpdateValue) {
          setPinCode(message.pin_code);
          fetchQrCode();
        }
      };

      useWebSocket(websocketUrl, {
        onOpen: () => onWsOpen(),
        onClose: () => console.log("websocket closed"),
        onMessage: (event) => onWsMessage(event),
        shouldReconnect: (event) => true,
      });

      return (
        <div className="PinCode" role="PinCode">
          {qrCode &&
          <Animate on={qrCode} transition="FadeIn">
            <div role="QrCode" className="Pop" dangerouslySetInnerHTML={{ __html: qrCode }} />
          </Animate>
          }
          {pinCode &&
          <p>
            Pin Code: <Animate on={pinCode} transition="FadeIn">{pinCode}</Animate>
          </p>
          }
        </div>
      );
    }