checkin2-tools/generate-printer-qr-code.html at main · digitevent/checkin2-tools · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Printer QR code generator for Digitevent Checkin2 app</title>
</head>

<body>
    <h1>
        Printer QR code generator
        <small> for Digitevent Checkin2 app</small>
    </h1>

    <div class="row">
        <section class="column">
            <h2>Enter name and MAC</h2>
            <form>
                <p>
                    <label for="printer_family">Model family </label>
                    <select name="printer_family" id="printer_family">
                        <option value="">Select printer model...</option>
                        <option value="zebra_zd421">Zebra ZD421</option>
                        <option value="zebra_zd230">Zebra ZD230</option>
                        <option value="zebra_zd420">Zebra ZD420</option>
                    </select>
                    (<b>Double check</b>)
                </p>
                <p>
                    <label for="printer_name">Printer name</label>
                    <input type="text" name="printer_name" id="printer_name" placeholder="Printer name" />
                </p>
                <p>
                    <label for="printer_mac">Printer MAC</label>
                    <input type="text" name="printer_mac" id="printer_mac" placeholder="Printer MAC" />
                </p>
                <p>
                    <label for="printer_friendly_name">Friendly name</label>
                    <input type="text" name="printer_friendly_name" id="printer_friendly_name"
                        placeholder="What user will see" />
                </p>
                <p>
                    <button type="button" id="generatebutton">Generate QR code</button>
                </p>
                <p>
                    <span id="errors" style="color: red;"></span>
                </p>
            </form>
            <p>
                <img id="qrcode" src="" alt="QR code" style="display: none;" />
                <textarea id="payload"></textarea>
            </p>
            <p> <a id="downloadbutton" download="printer-qr.png" href="" target="_blank" style="display: none;">Download
                    QR code</a></p>
        </section>
        <section class="column">
            <h2>How to find MAC and name of the Printer?</h2>
            <img src="img/printer_how_to_find_mac_name.jpg" alt="How to find MAC and name of the Printer?" />
        </section>
    </div>


    <script type="module">
        console.log('QR code generator for Digitevent Checkin2 app')
        import qrcode from 'https://cdn.jsdelivr.net/npm/qrcode@1.5.3/+esm'
        console.log('Lib loaded')

        const form = document.querySelector('form')

        document.querySelector('#generatebutton').addEventListener('click', generateQRCode);

        function generateQRCode() {
            const name = document.querySelector('#printer_name').value.trim()
            const macWithOrWithoutColons = document.querySelector('#printer_mac').value.trim()
            const friendlyName = document.querySelector('#printer_friendly_name').value.trim()
            const family = document.querySelector('#printer_family').value
            const validFamilies = ['zebra_zd421', 'zebra_zd420', 'zebra_zd230']
            if (!family) {
                putError('Please select printer model');
                return
            }
            if (!validFamilies.includes(family)) {
                putError('Invalid printer model');
                return
            }
            if (!name) {
                putError('Please fill name field');
                return
            }
            if (!macWithOrWithoutColons) {
                putError('Please fill mac field');
                return
            }
            if (!friendlyName) {
                putError('Please fill friendly name field');
                return
            }
            const mac = macWithOrWithoutColons.replace(/:/g, '')
            if (mac.length !== 12) {
                putError('MAC should be 12 characters long');
                return
            }
            if (friendlyName.length > 20) {
                putError('Friendly name should be less than 20 characters');
                return
            }
            const macWithColons = mac.match(/.{1,2}/g).join(':')
            const payload = generatePrinterQRCodePayload({ name, mac: macWithColons, friendlyName, family })
            document.querySelector('#payload').innerHTML = payload
            qrcode.toDataURL(payload, function (err, url) {
                if (err) {
                    console.error(err)
                    putError(err)
                    return
                }
                console.log('QR code generated', url)
                document.querySelector('#qrcode').style.display = 'block'
                document.querySelector('#downloadbutton').style.display = 'block'
                document.querySelector('#qrcode').src = url
                document.querySelector('#downloadbutton').href = url
                clearError()
            })
        }


        function putError(message) {
            document.querySelector('#errors').innerHTML = message
        }

        function clearError() {
            document.querySelector('#errors').innerHTML = ""
        }

        function generatePrinterQRCodePayload({ friendlyName, name, mac, family }) {
            const payload = {
                type: "digitevent_checkin2_printer",
                mac,
                localName: name,
                friendlyName,
                family
            }
            return JSON.stringify(payload)
        }
    </script>
    <style>
        body {
            max-width: 1000px;
            margin: 1rem auto;
            padding: 2rem;
            font-family: sans-serif;
        }

        .row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            grid-gap: 1rem;
        }

        .column {
            grid-row: 1;
        }

        img {
            max-width: 100%;
        }

        #payload {
            word-wrap: break-word;
        }
    </style>
</body>

</html>