{{define "title"}}Two-Factor Authentication{{end}}
{{define "content"}}
<div class="container">
    <section class="hero is-link is-bold">
        <div class="hero-body">
            <div class="container">
                <h1 class="title">
                    <i class="fa fa-lock mr-2"></i>
                    Two-Factor Authentication
                </h1>
            </div>
        </div>
    </section>

    {{ $User := .CurrentUser }}

    <div class="block p-4">
        <!-- Currently Enabled screen -->
        {{if .TwoFactor.Enabled}}
        <div class="card">
            <div class="card-header has-background-link">
                <p class="card-header-title has-text-light">
                    <i class="fa fa-lock mr-2"></i>
                    Two-Factor Authentication
                </p>
            </div>

            <div class="card-content">
                <div class="content">
                    <p>
                        Two-Factor status:
                        <i class="fa fa-check mr-1 has-text-success-dark"></i>
                        <strong class="has-text-success-dark">Enabled!</strong>
                    </p>

                    <p>
                        When you next log in to your account, you will need your Authenticator App handy to produce
                        the time-limited six-digit code to log in.
                    </p>

                    <!-- Are they reconfiguring their 2FA app (viewing the barcode)? -->
                    {{if .IsPairingSecondDevice}}
                        {{template "2fa-setup" .}}
                        <hr>
                    {{end}}

                    <h4 class="mt-4">Backup Codes</h4>

                    <p>
                        In case you lose access to your Authenticator App, please print off or write down these
                        <strong>backup codes</strong> which will allow you to re-gain access to your {{PrettyTitle}}
                        account. Each of these codes may be used <strong>one time</strong> in response to your
                        2FA Authenticator prompt at login.
                    </p>

                    <div class="columns is-multiline is-mobile">
                        {{range .TwoFactor.GetBackupCodes}}
                        <div class="column is-one-third-mobile is-one-quarter-tablet">
                            <code>{{.}}</code>
                        </div>
                        {{end}}
                    </div>

                    <p>
                        If you would like to <strong>re-generate</strong> these backup codes, click on the button below. This may
                        be useful if you have needed to log in using these codes (which are one-time use only) and wish to generate
                        a fresh set of backup codes. Note that re-generating new codes will cause the old ones to no longer work!
                    </p>

                    <!-- Form to regenerate backup codes. -->
                    <form action="{{.Request.URL.Path}}" method="POST">
                        {{InputCSRF}}
                        <input type="hidden" name="intent" value="regenerate-backup-codes">
                        <button type="submit" class="button is-warning"
                            onclick="return window.confirm('Are you sure you want to re-generate all of your Backup Codes? This will remove the current set of Backup Codes and replace them with a new set.')">
                            <i class="fa fa-rotate mr-2"></i>
                            Generate all-new backup codes
                        </button>
                    </form>

                    <hr>

                    <h4 class="has-text-danger mt-4">
                        <i class="fa fa-exclamation-triangle mr-1"></i>
                        Disable Two-Factor Auth
                    </h4>

                    <p>
                        If you wish to <strong>disable</strong> two-factor authentication for your account, please enter
                        your account password for verification and click on the button below.
                    </p>

                    <form action="{{.Request.URL.Path}}" method="POST">
                        {{InputCSRF}}
                        <input type="hidden" name="intent" value="disable">

                        <div class="field">
                            <label class="label" for="password">Your account password:</label>
                            <input type="password" class="input"
                                name="password"
                                placeholder="Password"
                                required>
                        </div>

                        <button type="submit" class="button is-danger">
                            Disable Two-Factor Authentication
                        </button>
                    </form>

                    <hr>

                    <h4 class="has-text-warning mt-4">
                        <i class="fa fa-qrcode mr-1"></i>
                        Set Up Another Device
                    </h4>

                    <p>
                        If you wish to <strong>set up another authenticator device</strong> and view your original
                        QR code, you may do so by entering your current account password below. This may be useful
                        if you have bought a new phone or want to migrate your authenticator to a different device,
                        so that you may access the original QR code and configure the new authenticator.
                    </p>

                    <p>
                        <strong>Note:</strong> this will not change your 2FA security key or backup codes. If you
                        have lost your old authenticator, it will be more secure to <strong>disable and then set up
                        2FA from scratch</strong>, which will generate a new secret key and backup codes.
                    </p>

                    <form action="{{.Request.URL.Path}}" method="POST">
                        {{InputCSRF}}
                        <input type="hidden" name="intent" value="resetup">

                        <div class="field">
                            <label class="label" for="password">Your account password:</label>
                            <input type="password" class="input"
                                name="password"
                                placeholder="Password"
                                required>
                        </div>

                        <button type="submit" class="button is-warning">
                            View my original 2FA QR code
                        </button>
                    </form>
                </div>
            </div>
        </div>
        {{end}}<!-- Currently Enabled -->

        <!-- Set Up screen -->
        {{if not .TwoFactor.Enabled}}
        <div class="card">
            <div class="card-header has-background-link">
                <p class="card-header-title has-text-light">
                    <i class="fa fa-lock mr-2"></i>
                    Set Up Two-Factor Authentication
                </p>
            </div>

            <div class="card-content">
                <div class="content">
                    <p>
                        Two-Factor status:
                        <i class="fa fa-xmark mr-1 has-text-danger"></i>
                        <strong class="has-text-danger">Disabled!</strong>
                    </p>

                    <h2>What is Two-Factor Authentication?</h2>

                    <p>
                        Two-Factor Authentication (or 2FA) is a security feature that can help to protect
                        your account in case somebody finds out your password. When logging in, you can
                        use an Authenticator App that will generate temporary one-time use codes to
                        log in to your account.
                    </p>

                    <p>
                        For example: if somebody figured out your username and password for {{PrettyTitle}},
                        they would be able to log in as you with that information. With 2FA you can add
                        a second factor to your login: the two factors are "something you know" (your password)
                        and "something you have" (your Authenticator App that produces six-digit codes).
                        This way, if somebody learns what your password is, they still can't log in to
                        your account unless they also have your Authenticator App.
                    </p>

                    <p>
                        After you set up 2FA, from the next time you log in to {{PrettyTitle}} with your
                        password, you will also be prompted to enter the six-digit code from your Authenticator
                        App. In case you lost access to your Authenticator, you will be able to use a
                        "Backup Code" to log in -- you will be able to see your Backup Codes after
                        setting up your Authenticator App.
                    </p>

                    {{template "2fa-setup" .}}
                </div>
            </div>
        </div>
    </div>
    {{end}}<!-- Setup -->

</div>
{{end}}
{{define "2fa-setup"}}
<h2>Set up your Authenticator App</h2>

<p>
    To set up Two-Factor Auth, you'll need to download and install a compatible
    Authenticator App on your device. Some suggestions for apps that are compatible
    with {{PrettyTitle}} are as follows:
</p>

<ul>
    <li>
        <strong>Google Authenticator:</strong>
        for <a href="https://play.google.com/store/apps/details?id=com.google.android.apps.authenticator2" target="_blank">
            <i class="fab fa-android"></i> Android
        </a> or <a href="https://apps.apple.com/us/app/google-authenticator/id388497605" target="_blank">
            <i class="fab fa-apple"></i> iOS
        </a>
    </li>

    <li>
        <strong>
            <a href="https://authy.com/download/" target="_blank">Authy:</a>
        </strong>
        available for <i class="fab fa-android"></i> Android and <i class="fab fa-apple"></i> iOS
        as well as Windows, macOS and Linux computers.
    </li>
</ul>

<h3>Add {{PrettyTitle}} to your Authenticator App</h3>

<p>
    When you have your Authenticator App ready, click on its "Add a new site" button and scan
    the following QR code to enroll your device for {{PrettyTitle}}:
</p>

{{ToHTML .QRCode}}

<p>
    Alternatively (if you can't scan the QR code), you may copy and paste this secret text
    in to your Authenticator app:
</p>

<div class="columns is-mobile">
    <div class="column is-half-tablet pr-1">
        <input type="text" class="input"
            id="totp-secret"
            value="{{.Key.Secret}}"
            readonly
            onclick="copySecret()">
    </div>
    <div class="column is-narrow pl-0">
        <button type="button"
            class="button is-success"
            id="copy-button"
            onclick="copySecret()">
            <i class="fa fa-copy mr-1"></i> Copy
        </button>
    </div>
</div>

<h3>Test your Authenticator App</h3>

<p>
    After scanning the QR code (or copying the secret key) into your Authenticator app, you
    should be able to generate temporary six-digit authentication codes.
</p>

<p>
    Test that you have enrolled your authenticator correctly by entering the current six-digit
    code below:
</p>

<form action="{{.Request.URL.Path}}" method="POST">
    {{InputCSRF}}
    <input type="hidden" name="intent" value="setup-verify">
    <div class="field">
        <label class="label" for="code">
            Authentication Code:
        </label>
        <input type="text" class="input is-one-quarter"
            name="code" id="code"
            pattern="^[0-9]{6}$"
            maxlength="6"
            placeholder="000000"
            style="max-width: 12em"
            autocomplete="off">
    </div>

    <button type="submit" class="button is-primary">Confirm &amp; Continue</button>
</form>
{{end}}
{{define "scripts"}}
<script>
function copySecret() {
    const secret = document.querySelector("#totp-secret")
        copyButton = document.querySelector("#copy-button");
    secret.select();
    navigator.clipboard.writeText(secret.value);
    copyButton.innerHTML = `<i class="fa fa-check mr-1"></i> Copied!`;
    setTimeout(() => {
        copyButton.innerHTML = `<i class="fa fa-copy mr-1"></i> Copy`;
    }, 1000);
}
</script>
{{end}}