app/templates/dashboard/contact_detail.html

{% extends 'default.html' %}

{% set active_page = "dashboard" %}

{% block title %}
  Contact {{ contact.email }} - Alias {{ alias.email }}
{% endblock %}

{% block default_content %}

  <div class="row">
    <div class="col">
      <h1 class="h3">
        <nav aria-label="breadcrumb">
          <ol class="breadcrumb">
            <li class="breadcrumb-item"><a
                href="{{ url_for('dashboard.alias_contact_manager', alias_id=alias.id) }}">{{ alias.email }}</a></li>
            <li class="breadcrumb-item active" aria-current="page">{{ contact.email }}
              {% if contact.pgp_finger_print %}
                <span class="cursor" data-toggle="tooltip" data-original-title="PGP Enabled">🗝</span>
              {% endif %}
            </li>
          </ol>
        </nav>
      </h1>

      <div class="card">
        <form method="post">
          <input type="hidden" name="form-name" value="pgp">

          <div class="card-body">
            <div class="card-title">
              Pretty Good Privacy (PGP)
              <div class="small-text">
                By importing your contact PGP Public Key into SimpleLogin, all emails sent to
                <b>{{ contact.email }}</b> from your alias <b>{{ alias.email }}</b>
                are <b>encrypted</b>.
              </div>
            </div>

            {% if not current_user.is_premium() %}
              <div class="alert alert-danger" role="alert">
                This feature is only available in premium plan.
              </div>
            {% endif %}

            <div class="form-group">
              <label class="form-label">PGP Public Key</label>

              <textarea name="pgp"
                  {% if not current_user.is_premium() %} disabled {% endif %}
                        class="form-control" rows=10 id="pgp-public-key"
                        placeholder="-----BEGIN PGP PUBLIC KEY BLOCK-----">{{ contact.pgp_public_key or "" }}</textarea>
              <div class="text-body p-2">You can drag and drop the pgp key into the text area</div>

            </div>

            <button class="btn btn-primary" name="action"
                {% if not current_user.is_premium() %} disabled {% endif %}
                    value="save">Save
            </button>
            {% if contact.pgp_finger_print %}
              <button class="btn btn-danger float-right" name="action" value="remove">Remove</button>
            {% endif %}

          </div>
        </form>

      </div>

    </div>
  </div>
{% endblock %}

{% block script %}
    {% if current_user.is_premium() %}
    <script>
    const MAX_BYTES = 2048; // 2KiB

    function drop(event) {
        event.stopPropagation();
        event.preventDefault();

        let files = event.dataTransfer.files;
        for (let i = 0; i < files.length; i++) {
            let file = files[i];
            console.log(file, file.name);
            if(file.type !== 'text/plain'){
                toastr.warning(`File ${file.name} is not a public key file`);
                continue;
            }
            let reader = new FileReader();
            reader.onloadend = onFileLoaded;
            reader.readAsBinaryString(file);
        }
    }

    function onFileLoaded(event) {
        const initialData = event.currentTarget.result.substr(0, MAX_BYTES);
        $('#pgp-public-key').val(initialData);
        console.log($('#pgp-public-key'));
    }

    const dropArea = $("#pgp-public-key").get(0);
    dropArea.addEventListener("drop", drop, false);
    </script>
    {% endif %}
{% endblock %}