function renderClientList(data) {
    $.each(data, function(index, obj) {
        // render client status css tag style
        let clientStatusHtml = '>'
        if (obj.Client.enabled) {
            clientStatusHtml = `style="visibility: hidden;">`
        }

        // render client allocated ip addresses
        let allocatedIpsHtml = "";
        $.each(obj.Client.allocated_ips, function(index, obj) {
            allocatedIpsHtml += `<small class="badge badge-secondary">${obj}</small>&nbsp;`;
        })

        // render client allowed ip addresses
        let allowedIpsHtml = "";
        $.each(obj.Client.allowed_ips, function(index, obj) {
            allowedIpsHtml += `<small class="badge badge-secondary">${obj}</small>&nbsp;`;
        })

        // render client html content
        let html = `<div class="col-sm-6" id="client_${obj.Client.id}">
                        <div class="info-box">
                            <div class="overlay" id="paused_${obj.Client.id}"` + clientStatusHtml
                                + `<i class="paused-client fas fa-3x fa-play" onclick="resumeClient('${obj.Client.id}')"></i>
                            </div>
                            <img src="${obj.QRCode}" />
                            <div class="info-box-content">
                                <div class="btn-group">
                                    <a href="/download?clientid=${obj.Client.id}"
                                        class="btn btn-outline-success btn-sm">Download</a>
                                    <button type="button" class="btn btn-outline-warning btn-sm" data-toggle="modal"
                                        data-target="#modal_email_client" data-clientid="${obj.Client.id}"
                                        data-clientname="${obj.Client.name}">Email</button>
                                    <button type="button" class="btn btn-outline-primary btn-sm" data-toggle="modal"
                                        data-target="#modal_edit_client" data-clientid="${obj.Client.id}"
                                        data-clientname="${obj.Client.name}">Edit</button>
                                    <button type="button" class="btn btn-outline-warning btn-sm" data-toggle="modal"
                                        data-target="#modal_pause_client" data-clientid="${obj.Client.id}"
                                        data-clientname="${obj.Client.name}">Disable</button>
                                    <button type="button" class="btn btn-outline-danger btn-sm" data-toggle="modal"
                                        data-target="#modal_remove_client" data-clientid="${obj.Client.id}"
                                        data-clientname="${obj.Client.name}">Remove</button>
                                </div>
                                <hr>
                                <span class="info-box-text"><i class="fas fa-user"></i> ${obj.Client.name}</span>
                                <span class="info-box-text"><i class="fas fa-envelope"></i> ${obj.Client.email}</span>
                                <span class="info-box-text"><i class="fas fa-clock"></i>
                                    ${prettyDateTime(obj.Client.created_at)}</span>
                                <span class="info-box-text"><i class="fas fa-history"></i>
                                    ${prettyDateTime(obj.Client.updated_at)}</span>
                                <span class="info-box-text"><i class="fas fa-server" style="${obj.Client.use_server_dns ? "opacity: 1.0" : "opacity: 0.5"}"></i>
                                    ${obj.Client.use_server_dns ? 'DNS enabled' : 'DNS disabled'}</span>
                                <span class="info-box-text"><strong>IP Allocation</strong></span>`
                                + allocatedIpsHtml
                                + `<span class="info-box-text"><strong>Allowed IPs</strong></span>`
                                + allowedIpsHtml
                            +`</div>
                        </div>
                    </div>`

        // add the client html elements to the list
        $('#client-list').append(html);
    });
}

function prettyDateTime(timeStr) {
    const dt = new Date(timeStr);
    const offsetMs = dt.getTimezoneOffset() * 60 * 1000;
    const dateLocal = new Date(dt.getTime() - offsetMs);
    return dateLocal.toISOString().slice(0, 19).replace(/-/g, "/").replace("T", " ");
}