{% extends "base_settings_page.html" %}
{% block content %}
<div style="max-width: 700px;">

    <p>In order to continue, please click on the "Start Enrollment" button, insert your security key and approve the
        registration request.</p>

    <div class="form-group">
        <label for="inputKeyName" class="form-label mt-4">Key name</label>
        <input type="text" class="form-control" id="inputKeyName"
               placeholder="Device / Authenticator app name"
               value="Security key" minlength="1" maxlength="{{ max_name_len }}" required/>
        <small class="form-text text-muted">Please give a name to your key to identify it more easily later.</small>
        <div class="invalid-feedback">Please give a name to this security key</div>
    </div>

    <input type="button" class="btn btn-primary" value="Start enrollment" onclick="startEnrollment()"
           style="margin-top: 20px;" id="submitButton" />

    <script src="/assets/js/base64_lib.js"></script>
    <script>
        const OPAQUE_STATE = "{{ opaque_state }}";
        const REGISTRATION_CHALLENGE = JSON.parse(decodeURIComponent("{{ challenge_json }}"));

        // Decode data
        REGISTRATION_CHALLENGE.publicKey.challenge = base64NoPaddingToUint8Array(
			REGISTRATION_CHALLENGE.publicKey.challenge
		);
		REGISTRATION_CHALLENGE.publicKey.user.id = base64NoPaddingToUint8Array(
			REGISTRATION_CHALLENGE.publicKey.user.id
		);

        const submitButton = document.getElementById("submitButton");

        async function startEnrollment() {
            submitButton.disabled = true;
            try {
                const factorNameInput = document.getElementById("inputKeyName");
                factorNameInput.classList.remove("is-invalid");
                if (factorNameInput.value.length === 0) {
                    factorNameInput.classList.add("is-invalid");
                    return;
                }

                const cred = await navigator.credentials.create(REGISTRATION_CHALLENGE);

                // Encode data that needs to be encoded
                const credential_res = {
                    id: cred.id,
                    rawId: ArrayBufferToBase64(cred.rawId),
                    type: cred.type,
                    response: {
                        attestationObject: ArrayBufferToBase64(
                            cred.response.attestationObject
                        ),
                        clientDataJSON: ArrayBufferToBase64(
                            cred.response.clientDataJSON
                        ),
                    },
                };

                const res = await fetch("/settings/api/two_factor/save_webauthn_factor", {
                    method: "post",
                    headers: {
                      'Content-Type': 'application/json',
                    },
                    body: JSON.stringify({
                        opaque_state: OPAQUE_STATE,
                        factor_name: factorNameInput.value,
                        credential: credential_res,
                    })
                });

                let text = await res.text();
                alert(text);

                if (res.status == 200)
                    location.href = "/settings/two_factors";
            } catch(e) {
                console.error(e);
                alert("Failed enrollment, please try again!");
            } finally {
                submitButton.disabled = false;
            }
        }
    </script>

</div>

{% endblock content %}