{% extends "base.html" %}

{% block title %}Settings - NanoIDP{% endblock %}

{% block content %}
<div class="d-flex justify-content-between align-items-center mb-4">
    <h2><i class="bi bi-gear me-2"></i>IdP Settings</h2>
</div>

<form method="post">
    {# An unchecked checkbox never submits, so on its own it looks identical to
       a checkbox that was never on the form. These markers let the server
       apply "absent = unchanged" (#131): a checkbox is only interpreted when
       its marker is present. One marker per checkbox rendered below. #}
    <input type="hidden" name="issuer_from_request__on_form" value="1">
    <input type="hidden" name="issuer_from_proxy_headers__on_form" value="1">
    <input type="hidden" name="require_pkce__on_form" value="1">
    <input type="hidden" name="refresh_token_rotation__on_form" value="1">
    <input type="hidden" name="saml_sign_responses__on_form" value="1">
    <input type="hidden" name="strict_saml_binding__on_form" value="1">
    <input type="hidden" name="saml_want_authn_requests_signed__on_form" value="1">
    <input type="hidden" name="saml_export_roles__on_form" value="1">
    <input type="hidden" name="saml_export_groups__on_form" value="1">
    <div class="row g-4">
        <!-- OAuth Settings -->
        <div class="col-md-6">
            <div class="card h-100">
                <div class="card-header">
                    <i class="bi bi-key me-2"></i>OAuth2 / OIDC Settings
                </div>
                <div class="card-body">
                    <div class="mb-3">
                        <label for="issuer" class="form-label">Issuer URL</label>
                        <input type="url" class="form-control" id="issuer" name="issuer"
                               value="{{ settings.issuer }}">
                        <div class="form-text">Base URL used in JWT "iss" claim</div>
                    </div>

                    <div class="mb-3">
                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" role="switch"
                                   id="issuer_from_request" name="issuer_from_request" value="true"
                                   {% if settings.issuer_from_request %}checked{% endif %}>
                            <label class="form-check-label" for="issuer_from_request">Derive Issuer from Request</label>
                        </div>
                        <div class="form-text">Use each request's own Host header instead of the Issuer URL above (discovery, tokens, device flow all agree per-hostname; dev convenience for setups reachable under more than one hostname).</div>
                    </div>

                    <div class="mb-3">
                        <label for="issuer_allowlist" class="form-label">Issuer Allowlist</label>
                        <textarea class="form-control" id="issuer_allowlist" name="issuer_allowlist"
                                  rows="2" placeholder="One origin per line, e.g. http://localhost:8000">{{ settings.issuer_allowlist | join('\n') }}</textarea>
                        <div class="form-text">Origins allowed to be reflected back by "Derive Issuer from Request". Empty = allow any Host header (dev convenience). A non-matching Host falls back to the Issuer URL above.</div>
                    </div>

                    <div class="mb-3">
                        <label for="device_verification_base_url" class="form-label">Device Verification Base URL</label>
                        <input type="url" class="form-control" id="device_verification_base_url" name="device_verification_base_url"
                               value="{{ settings.device_verification_base_url or '' }}" placeholder="https://idp.example.com (optional)">
                        <div class="form-text">Overrides the device flow's verification_uri when "Derive Issuer from Request" is on, so a backend/container caller's Host doesn't leak into a URL the human's browser can't reach. Leave blank to keep following the request Host.</div>
                    </div>

                    <div class="mb-3">
                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" role="switch"
                                   id="issuer_from_proxy_headers" name="issuer_from_proxy_headers" value="true"
                                   {% if settings.issuer_from_proxy_headers %}checked{% endif %}>
                            <label class="form-check-label" for="issuer_from_proxy_headers">Trust Proxy Headers</label>
                        </div>
                        <div class="form-text">Trust X-Forwarded-Proto/Host/For from a single reverse-proxy hop in front of NanoIDP (applies ProxyFix). Only changes the derived issuer above when "Derive Issuer from Request" is also on; always affects rate-limit and audit-log client IP attribution. Only enable this behind exactly one trusted proxy - these headers are otherwise spoofable. Takes effect on the next app restart.</div>
                    </div>

                    <div class="mb-3">
                        <label for="audience" class="form-label">Audience</label>
                        <input type="text" class="form-control" id="audience" name="audience"
                               value="{{ settings.audience }}">
                        <div class="form-text">Default audience for JWT "aud" claim</div>
                    </div>

                    <div class="mb-3">
                        <label for="token_expiry_minutes" class="form-label">Token Expiry (minutes)</label>
                        <input type="number" class="form-control" id="token_expiry_minutes" name="token_expiry_minutes"
                               value="{{ settings.token_expiry_minutes }}" min="1" max="525600">
                        <div class="form-text">How long tokens are valid (default: 60 minutes)</div>
                    </div>

                    <div class="mb-3">
                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" role="switch"
                                   id="require_pkce" name="require_pkce" value="true"
                                   {% if settings.require_pkce %}checked{% endif %}>
                            <label class="form-check-label" for="require_pkce">Require PKCE</label>
                        </div>
                        <div class="form-text">Reject <code>/authorize</code> requests without a PKCE <code>code_challenge</code> (on by default in stricter-dev and implied by oauth21).</div>
                    </div>

                    <div class="mb-3">
                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" role="switch"
                                   id="refresh_token_rotation" name="refresh_token_rotation" value="true"
                                   {% if settings.refresh_token_rotation %}checked{% endif %}>
                            <label class="form-check-label" for="refresh_token_rotation">Refresh Token Rotation</label>
                        </div>
                        <div class="form-text">Each refresh invalidates the used refresh token; reuse revokes its rotation family (forced on by oauth21).</div>
                    </div>
                </div>
            </div>
        </div>

        <!-- SAML Settings -->
        <div class="col-md-6">
            <div class="card h-100">
                <div class="card-header">
                    <i class="bi bi-shield me-2"></i>SAML Settings
                </div>
                <div class="card-body">
                    <div class="mb-3">
                        <label for="saml_entity_id" class="form-label">Entity ID</label>
                        <input type="text" class="form-control" id="saml_entity_id" name="saml_entity_id"
                               value="{{ settings.saml_entity_id }}">
                        <div class="form-text">SAML IdP Entity ID</div>
                    </div>

                    <div class="mb-3">
                        <label for="saml_sso_url" class="form-label">SSO URL</label>
                        <input type="url" class="form-control" id="saml_sso_url" name="saml_sso_url"
                               value="{{ settings.saml_sso_url }}">
                        <div class="form-text">SAML Single Sign-On endpoint</div>
                    </div>

                    <div class="mb-3">
                        <label for="default_acs_url" class="form-label">Default ACS URL</label>
                        <input type="url" class="form-control" id="default_acs_url" name="default_acs_url"
                               value="{{ settings.default_acs_url }}">
                        <div class="form-text">Default Assertion Consumer Service URL</div>
                    </div>

                    <div class="mb-3">
                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" role="switch"
                                   id="saml_sign_responses" name="saml_sign_responses" value="true"
                                   {% if settings.saml_sign_responses %}checked{% endif %}>
                            <label class="form-check-label" for="saml_sign_responses">Sign SAML Responses</label>
                        </div>
                        <div class="form-text">Enable XML signature on SAML responses. Disable for testing unsigned flows.</div>
                    </div>

                    <div class="mb-3">
                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" role="switch"
                                   id="strict_saml_binding" name="strict_saml_binding" value="true"
                                   {% if settings.strict_saml_binding %}checked{% endif %}>
                            <label class="form-check-label" for="strict_saml_binding">Strict SAML Binding</label>
                        </div>
                        <div class="form-text">Enforce SAML 2.0 binding compliance. When enabled, rejects GET requests with uncompressed data.</div>
                    </div>

                    <div class="mb-3">
                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" role="switch"
                                   id="saml_want_authn_requests_signed" name="saml_want_authn_requests_signed" value="true"
                                   {% if settings.saml_want_authn_requests_signed %}checked{% endif %}>
                            <label class="form-check-label" for="saml_want_authn_requests_signed">Require Signed AuthnRequests</label>
                        </div>
                        <div class="form-text">Verify AuthnRequest signatures (both bindings) against the registered SP certificates; advertised as <code>WantAuthnRequestsSigned</code> in metadata.</div>
                    </div>

                    <div class="mb-3">
                        <label for="saml_sp_certificates" class="form-label">SP Certificates</label>
                        <textarea class="form-control" id="saml_sp_certificates" name="saml_sp_certificates"
                                  rows="2" placeholder="One PEM file path per line">{{ settings.saml_sp_certificates | join('\n') }}</textarea>
                        <div class="form-text">PEM certificate files of SPs whose AuthnRequest signatures are accepted.</div>
                    </div>

                    <div class="mb-3">
                        <label for="saml_c14n_algorithm" class="form-label">Canonicalization Algorithm</label>
                        <select class="form-select" id="saml_c14n_algorithm" name="saml_c14n_algorithm">
                            <option value="exc_c14n" {% if settings.saml_c14n_algorithm == 'exc_c14n' %}selected{% endif %}>Exclusive C14N 1.0 (default)</option>
                            <option value="c14n" {% if settings.saml_c14n_algorithm == 'c14n' %}selected{% endif %}>C14N 1.0</option>
                            <option value="c14n11" {% if settings.saml_c14n_algorithm == 'c14n11' %}selected{% endif %}>C14N 1.1</option>
                        </select>
                        <div class="form-text">XML canonicalization algorithm for SAML signatures</div>
                    </div>

                    <div class="mb-3">
                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" role="switch"
                                   id="saml_export_roles" name="saml_export_roles" value="true"
                                   {% if settings.saml_export_roles %}checked{% endif %}>
                            <label class="form-check-label" for="saml_export_roles">Export Roles Attribute</label>
                        </div>
                        <div class="form-text">Include the user's roles in SAML assertions and AttributeQuery responses. Off by default.</div>
                    </div>

                    <div class="mb-3">
                        <label for="saml_roles_attr_name" class="form-label">Roles Attribute Name</label>
                        <input type="text" class="form-control" id="saml_roles_attr_name" name="saml_roles_attr_name"
                               value="{{ settings.saml_roles_attr_name }}" placeholder="roles">
                        <div class="form-text">Name used when the export above is on. Common values: <code>roles</code>, <code>Role</code>, <code>http://schemas.microsoft.com/ws/2008/06/identity/claims/role</code>.</div>
                    </div>

                    <div class="mb-3">
                        <div class="form-check form-switch">
                            <input class="form-check-input" type="checkbox" role="switch"
                                   id="saml_export_groups" name="saml_export_groups" value="true"
                                   {% if settings.saml_export_groups %}checked{% endif %}>
                            <label class="form-check-label" for="saml_export_groups">Export Groups Attribute</label>
                        </div>
                        <div class="form-text">Include the user's groups in SAML assertions and AttributeQuery responses. Off by default.</div>
                    </div>

                    <div class="mb-3">
                        <label for="saml_groups_attr_name" class="form-label">Groups Attribute Name</label>
                        <input type="text" class="form-control" id="saml_groups_attr_name" name="saml_groups_attr_name"
                               value="{{ settings.saml_groups_attr_name }}" placeholder="groups">
                        <div class="form-text">Name used when the export above is on. Common values: <code>groups</code>, <code>memberOf</code>.</div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Identity Classes -->
        <div class="col-12">
            <div class="card">
                <div class="card-header">
                    <i class="bi bi-person-badge me-2"></i>Allowed Identity Classes
                </div>
                <div class="card-body">
                    <div class="mb-3">
                        <label for="allowed_identity_classes" class="form-label">Identity Classes</label>
                        <textarea class="form-control" id="allowed_identity_classes" name="allowed_identity_classes" rows="4">{{ settings.allowed_identity_classes|join('\n') }}</textarea>
                        <div class="form-text">One identity class per line (e.g., INTERNAL, EXTERNAL, PARTNER, SERVICE)</div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Settings Preview -->
    <div class="card mt-4">
        <div class="card-header d-flex justify-content-between align-items-center">
            <span><i class="bi bi-eye me-2"></i>Preview Changes</span>
            <button type="button" class="btn btn-sm btn-outline-secondary" onclick="updatePreview()">
                <i class="bi bi-arrow-clockwise"></i> Refresh
            </button>
        </div>
        <div class="card-body">
            <pre id="settingsPreview" class="json mb-0" style="max-height: 200px;">Click "Refresh" to preview changes</pre>
        </div>
    </div>

    <div class="d-flex justify-content-end mt-4 gap-2">
        <button type="button" class="btn btn-outline-secondary" onclick="updatePreview()">
            <i class="bi bi-eye me-2"></i>Preview
        </button>
        <button type="submit" class="btn btn-primary">
            <i class="bi bi-check-lg me-2"></i>Save Settings
        </button>
    </div>
</form>

<!-- Endpoints Reference -->
<div class="card mt-4">
    <div class="card-header">
        <i class="bi bi-link-45deg me-2"></i>IdP Endpoints
    </div>
    <div class="card-body">
        <table class="table table-sm mb-0">
            <tbody>
                <tr>
                    <td class="text-muted" style="width: 200px;">OIDC Discovery</td>
                    <td><a href="/.well-known/openid-configuration" target="_blank">/.well-known/openid-configuration</a></td>
                </tr>
                <tr>
                    <td class="text-muted">JWKS Endpoint</td>
                    <td><a href="/.well-known/jwks.json" target="_blank">/.well-known/jwks.json</a></td>
                </tr>
                <tr>
                    <td class="text-muted">Token Endpoint</td>
                    <td><code>/token</code></td>
                </tr>
                <tr>
                    <td class="text-muted">SAML Metadata</td>
                    <td><a href="/saml/metadata" target="_blank">/saml/metadata</a></td>
                </tr>
                <tr>
                    <td class="text-muted">SAML SSO</td>
                    <td><code>/saml/sso</code></td>
                </tr>
            </tbody>
        </table>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
function updatePreview() {
    const preview = {
        oauth: {
            issuer: document.getElementById('issuer').value,
            issuer_from_request: document.getElementById('issuer_from_request').checked,
            issuer_allowlist: document.getElementById('issuer_allowlist').value
                .split('\n').map(s => s.trim()).filter(s => s),
            device_verification_base_url: document.getElementById('device_verification_base_url').value.trim(),
            issuer_from_proxy_headers: document.getElementById('issuer_from_proxy_headers').checked,
            audience: document.getElementById('audience').value,
            token_expiry_minutes: parseInt(document.getElementById('token_expiry_minutes').value) || 60,
            require_pkce: document.getElementById('require_pkce').checked,
            refresh_token_rotation: document.getElementById('refresh_token_rotation').checked
        },
        saml: {
            entity_id: document.getElementById('saml_entity_id').value,
            sso_url: document.getElementById('saml_sso_url').value,
            default_acs_url: document.getElementById('default_acs_url').value,
            sign_responses: document.getElementById('saml_sign_responses').checked,
            strict_binding: document.getElementById('strict_saml_binding').checked,
            want_authn_requests_signed: document.getElementById('saml_want_authn_requests_signed').checked,
            sp_certificates: document.getElementById('saml_sp_certificates').value
                .split('\n').map(s => s.trim()).filter(s => s),
            c14n_algorithm: document.getElementById('saml_c14n_algorithm').value,
            export_roles: document.getElementById('saml_export_roles').checked,
            export_groups: document.getElementById('saml_export_groups').checked,
            roles_attr_name: document.getElementById('saml_roles_attr_name').value.trim() || 'roles',
            groups_attr_name: document.getElementById('saml_groups_attr_name').value.trim() || 'groups'
        },
        allowed_identity_classes: document.getElementById('allowed_identity_classes').value
            .split('\n')
            .map(s => s.trim())
            .filter(s => s)
    };

    document.getElementById('settingsPreview').textContent = JSON.stringify(preview, null, 2);
}

// Auto-update preview on input change
document.querySelectorAll('input, textarea, select').forEach(el => {
    el.addEventListener('input', updatePreview);
    el.addEventListener('change', updatePreview);
});

// Initial preview
updatePreview();
</script>
{% endblock %}