{% extends "base.html" %}

{% block title_extra %} — {{ _('nav_settings') }}{% endblock %}

{% block content %}
<div class="section-title">
    <span class="icon">⚙️</span>
    {{ _('settings_title') }}
</div>

<div class="grid"
    style="display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: var(--space-lg); align-items: start;">
    <!-- LEFT COLUMN -->
    <div style="display: flex; flex-direction: column; gap: var(--space-lg);">
        <!-- BLOCK 1: Appearance -->
        <div class="card">
            <h3 class="card-title" style="margin-bottom: var(--space-lg);">{{ _('appearance') }}</h3>
            <form id="appearanceForm">
                <div class="form-group">
                    <label class="form-label">{{ _('title_label') }}</label>
                    <input type="text" class="form-input" name="title" value="{{ settings.appearance.title }}" required>
                </div>
                <div class="form-group">
                    <label class="form-label">{{ _('logo_label') }}</label>
                    <input type="text" class="form-input" name="logo" value="{{ settings.appearance.logo }}" required>
                </div>
                <div class="form-group">
                    <label class="form-label">{{ _('subtitle_label') }}</label>
                    <input type="text" class="form-input" name="subtitle" value="{{ settings.appearance.subtitle }}"
                        required>
                </div>
            </form>
        </div>

        <!-- BLOCK Captcha -->
        <div class="card">
            <h3 class="card-title" style="margin-bottom: var(--space-lg);">{{ _('captcha_title') }}</h3>
            <form id="captchaForm">
                <div class="form-group">
                    <label class="form-label">
                        <input type="checkbox" id="captcha_enabled" {% if captcha_settings.enabled %}checked{% endif %}>
                        {{ _('enable_captcha') }}
                    </label>
                </div>
            </form>
        </div>

        <!-- BLOCK Telegram Bot -->
        <div class="card">
            <h3 class="card-title" style="margin-bottom: var(--space-lg);">{{ _('telegram_bot_title') }}</h3>
            <form id="telegramForm">
                <div class="form-group">
                    <label class="form-label">{{ _('bot_token_label') }}</label>
                    <input type="text" class="form-input" id="tg_token" value="{{ telegram_settings.token or '' }}"
                        placeholder="123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11">
                </div>
                <div style="display: flex; align-items: center; gap: var(--space-md); margin-top: var(--space-md);">
                    <div style="display: flex; align-items: center; gap: var(--space-sm);">
                        <span style="font-size: 0.85rem; color: var(--text-muted);">{{ _('bot_status') }}:</span>
                        {% if bot_running %}
                        <span class="badge badge-success" id="botStatusBadge">{{ _('bot_running') }}</span>
                        {% else %}
                        <span class="badge badge-secondary" id="botStatusBadge">{{ _('bot_stopped') }}</span>
                        {% endif %}
                    </div>
                    <button type="button" class="btn btn-secondary btn-sm" onclick="toggleBot()" id="toggleBotBtn">
                        <span id="toggleBotBtnText">{% if bot_running %}{{ _('bot_stop_btn') }}{% else %}{{
                            _('bot_start_btn') }}{% endif %}</span>
                        <div class="spinner hidden" id="toggleBotSpinner" style="width:14px;height:14px;"></div>
                    </button>
                </div>
                <p class="form-hint" style="margin-top: var(--space-sm);">
                    {{ _('bot_hint') }}
                </p>
            </form>
        </div>

        <!-- BLOCK 4: API Docs -->
        <div class="card">
            <h3 class="card-title" style="margin-bottom: var(--space-lg);">{{ _('api_docs_title') }}</h3>
            <div style="display: flex; flex-direction: column; gap: var(--space-md);">
                <a href="/docs" target="_blank" class="btn btn-secondary"
                    style="justify-content: flex-start; text-decoration: none;">
                    <span style="font-size: 1.2rem; margin-right: 10px;">📖</span>
                    <div style="text-align: left;">
                        <div style="font-weight: 600;">Swagger UI</div>
                        <div style="font-size: 0.75rem; opacity: 0.7;">{{ _('api_docs_hint') }}</div>
                    </div>
                </a>
                <a href="/redoc" target="_blank" class="btn btn-secondary"
                    style="justify-content: flex-start; text-decoration: none;">
                    <span style="font-size: 1.2rem; margin-right: 10px;">📑</span>
                    <div style="text-align: left;">
                        <div style="font-weight: 600;">ReDoc</div>
                        <div style="font-size: 0.75rem; opacity: 0.7;">{{ _('api_docs_hint') }}</div>
                    </div>
                </a>
            </div>
            <p class="form-hint" style="margin-top: var(--space-md);">{{ _('api_docs_hint') }}</p>
        </div>

        <!-- BLOCK SSL/HTTPS -->
        <div class="card">
            <h3 class="card-title" style="margin-bottom: var(--space-lg);">🔒 {{ _('ssl_title') }}</h3>
            <form id="sslForm">
                <div class="form-group">
                    <label class="form-label">
                        <input type="checkbox" id="ssl_enabled" {% if settings.get('ssl', {}).get('enabled') %}checked{% endif %}>
                        {{ _('enable_https') }}
                    </label>
                </div>
                <div class="form-group" style="margin-top: var(--space-md);">
                    <label class="form-label">{{ _('panel_port_label') }}</label>
                    <input type="number" class="form-input" id="panel_port" value="{{ settings.get('ssl', {}).get('panel_port', 5000) }}" placeholder="5000">
                </div>
                <div id="sslFields" style="{% if not settings.get('ssl', {}).get('enabled') %}display:none;{% endif %} margin-top: var(--space-md);">
                    <div class="form-group">
                        <label class="form-label">{{ _('domain_label') }}</label>
                        <input type="text" class="form-input" id="ssl_domain" value="{{ settings.get('ssl', {}).get('domain', '') }}" placeholder="vpn.example.com">
                    </div>

                    <div style="display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md);">
                        <div class="form-group">
                            <label class="form-label">{{ _('cert_path_label') }}</label>
                            <input type="text" class="form-input" id="ssl_cert_path" value="{{ settings.get('ssl', {}).get('cert_path', '') }}" placeholder="/etc/amnezia/cert.pem">
                        </div>
                        <div class="form-group">
                            <label class="form-label">{{ _('key_path_label') }}</label>
                            <input type="text" class="form-input" id="ssl_key_path" value="{{ settings.get('ssl', {}).get('key_path', '') }}" placeholder="/etc/amnezia/key.pem">
                        </div>
                    </div>

                    <div class="divider" style="margin: var(--space-md) 0;">{{ _('or_paste_text') }}</div>

                    <div class="form-group">
                        <label class="form-label">{{ _('cert_text_label') }}</label>
                        <textarea class="form-input" id="ssl_cert_text" rows="4" placeholder="-----BEGIN CERTIFICATE----- ...">{{ settings.get('ssl', {}).get('cert_text', '') }}</textarea>
                    </div>
                    <div class="form-group">
                        <label class="form-label">{{ _('key_text_label') }}</label>
                        <textarea class="form-input" id="ssl_key_text" rows="4" placeholder="-----BEGIN PRIVATE KEY----- ...">{{ settings.get('ssl', {}).get('key_text', '') }}</textarea>
                    </div>

                    <p class="form-hint">{{ _('ssl_hint') }}</p>
                </div>
            </form>
        </div>
    </div>

    <!-- RIGHT COLUMN -->
    <div style="display: flex; flex-direction: column; gap: var(--space-lg);">
        <!-- BLOCK 3: Import Users -->
        <div class="card">
            <h3 class="card-title" style="margin-bottom: var(--space-lg);">{{ _('import_users_title') }}</h3>
            <form id="syncForm">
                <div class="form-group" style="margin-bottom: var(--space-lg);">
                    <label class="form-label">{{ _('import_source_label') }}</label>
                    <div style="display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-sm);">
                        <label style="display: flex; align-items: center; gap: var(--space-sm); cursor: pointer;">
                            <input type="checkbox" name="remnawave_sync" {% if settings.sync.remnawave_sync %}checked{%
                                endif %}> Remnawave
                        </label>
                        <label
                            style="display: flex; align-items: center; gap: var(--space-sm); cursor: not-allowed; color: var(--text-muted);">
                            <input type="checkbox" disabled> Marzban
                        </label>
                        <label
                            style="display: flex; align-items: center; gap: var(--space-sm); cursor: not-allowed; color: var(--text-muted);">
                            <input type="checkbox" disabled> 3x-ui
                        </label>
                        <label
                            style="display: flex; align-items: center; gap: var(--space-sm); cursor: not-allowed; color: var(--text-muted);">
                            <input type="checkbox" disabled> Hiddify
                        </label>
                        <label
                            style="display: flex; align-items: center; gap: var(--space-sm); cursor: not-allowed; color: var(--text-muted);">
                            <input type="checkbox" disabled> LDAP
                        </label>
                    </div>
                </div>

                <div id="remnawaveFields"
                    style="{% if not settings.sync.remnawave_sync %}display:none;{% endif %} border-top: 1px solid var(--border-color); padding-top: var(--space-md);">
                    <div class="form-group">
                        <label class="form-label">{{ _('remnawave_url_label') }}</label>
                        <input type="url" class="form-input" name="remnawave_url"
                            value="{{ settings.sync.remnawave_url }}" placeholder="https://vpn.example.com">
                    </div>
                    <div class="form-group">
                        <label class="form-label">{{ _('api_key_label') }}</label>
                        <input type="password" class="form-input" name="remnawave_api_key"
                            value="{{ settings.sync.remnawave_api_key }}" placeholder="Your secret key">
                    </div>

                    <div class="form-group">
                        <label
                            style="display: flex; align-items: center; gap: var(--space-sm); cursor: pointer; margin-bottom: var(--space-xs);">
                            <input type="checkbox" name="remnawave_sync_users" {% if settings.sync.remnawave_sync_users
                                %}checked{% endif %}>
                            {{ _('enable_sync') }}
                        </label>
                        <div class="form-hint"
                            style="margin-left: var(--space-lg); line-height: 1.4; margin-bottom: var(--space-sm);">
                            {{ _('sync_hint') }}
                        </div>
                        <div style="display: flex; gap: var(--space-sm); margin-left: var(--space-lg);">
                            <button type="button" class="btn btn-secondary btn-sm" onclick="syncRemnawaveNow()"
                                id="syncNowBtn">
                                <span id="syncNowBtnText">🔄 {{ _('sync_now_btn') }}</span>
                                <div class="spinner hidden" id="syncNowSpinner" style="width:14px; height:14px;"></div>
                            </button>
                            <button type="button" class="btn btn-danger btn-sm" onclick="deleteSyncRemnawave()"
                                id="syncDelBtn">
                                <span id="syncDelBtnText">🗑 {{ _('delete_sync_btn') }}</span>
                                <div class="spinner hidden" id="syncDelSpinner" style="width:14px; height:14px;"></div>
                            </button>
                        </div>
                    </div>

                    <div class="form-group">
                        <label style="display: flex; align-items: center; gap: var(--space-sm); cursor: pointer;">
                            <input type="checkbox" name="remnawave_create_conns" id="syncCreateConns" {% if
                                settings.sync.remnawave_create_conns %}checked{% endif %}>
                            {{ _('auto_create_conns') }}
                        </label>
                    </div>

                    <div id="autoConnFields"
                        style="{% if not settings.sync.remnawave_create_conns %}display:none;{% endif %} background: var(--bg-primary); padding: var(--space-md); border-radius: var(--radius-md); margin-top: var(--space-sm);">
                        <div class="form-group">
                            <label class="form-label">{{ _('sync_server_label') }}</label>
                            <select class="form-select" name="remnawave_server_id" onchange="updateProtocolsForSync()">
                                {% for s in servers %}
                                <option value="{{ loop.index0 }}" {% if settings.sync.remnawave_server_id==loop.index0
                                    %}selected{% endif %}>{{ s.name or s.host }}</option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="form-group">
                            <label class="form-label">{{ _('protocol_label') }}</label>
                            <select class="form-select" name="remnawave_protocol" id="syncProtocolSelect">
                                <option value="awg" {% if settings.sync.remnawave_protocol=='awg' %}selected{% endif %}>
                                    AmneziaWG</option>
                                <option value="awg2" {% if settings.sync.remnawave_protocol=='awg2' %}selected{% endif %}>
                                    AmneziaWG 2.0</option>
                                <option value="awg_legacy" {% if settings.sync.remnawave_protocol=='awg_legacy' %}selected{% endif %}>
                                    AWG Legacy</option>
                                <option value="xray" {% if settings.sync.remnawave_protocol=='xray' %}selected{% endif %}>
                                    Xray</option>
                            </select>
                        </div>
                    </div>
                </div>
            </form>
        </div>

        <!-- BLOCK: Simple Backup -->
        <div class="card" style="margin-top: var(--space-lg);">
            <h3 class="card-title" style="margin-bottom: var(--space-lg);">📤 {{ _('backup_title') }}</h3>
            <div style="display: flex; flex-direction: column; gap: var(--space-md);">
                <div style="display: flex; gap: var(--space-sm);">
                    <a href="/api/settings/backup/download" class="btn btn-secondary"
                        style="flex:1; text-decoration:none; display:flex; align-items:center; justify-content:center; gap:var(--space-sm);">
                        <span>⬇️</span> {{ _('download_backup') }}
                    </a>
                </div>
                <div style="border-top: 1px solid var(--border-color); padding-top: var(--space-md);">
                    <div style="display: flex; flex-direction: column; gap: var(--space-sm);">
                        <input type="file" id="backupFile" accept=".json" style="display: none;"
                            onchange="handleRestore(event)">
                        <button type="button" class="btn btn-secondary"
                            onclick="document.getElementById('backupFile').click()" id="restoreBtn"
                            style="gap:var(--space-sm);">
                            <span>⬆️</span> {{ _('restore_backup') }}
                        </button>
                    </div>
                </div>
            </div>
            <p class="form-hint" style="margin-top: var(--space-sm);">
                {{ _('restore_confirm') }}
            </p>
        </div>

        <!-- BLOCK: About & Updates -->
        <div class="card" style="margin-top: var(--space-lg);">
            <h3 class="card-title" style="margin-bottom: var(--space-lg);">ℹ️ {{ _('about_title') }}</h3>
            <div style="display: flex; flex-direction: column; gap: var(--space-md);">
                <div style="display: flex; justify-content: space-between; align-items: center; padding: var(--space-sm) 0; border-bottom: 1px solid var(--border-color);">
                    <span style="font-weight: 500;">{{ _('current_version') }}</span>
                    <span class="badge badge-info" id="currentVersionBadge" style="font-size: 0.95rem;">{{ current_version }}</span>
                </div>
                
                <div id="updateStatus" class="hidden" style="padding: var(--space-md); border-radius: var(--radius-md); background: var(--bg-primary); text-align: center;">
                    <!-- Updated via JS -->
                </div>

                <div style="display: flex; gap: var(--space-sm); margin-top: var(--space-sm);">
                    <button type="button" class="btn btn-secondary" onclick="checkForUpdates()" id="checkUpdateBtn" style="flex:1;">
                        <span id="checkUpdateBtnText">🔄 {{ _('check_updates') }}</span>
                        <div class="spinner hidden" id="checkUpdateSpinner" style="width:14px; height:14px;"></div>
                    </button>
                    <a href="https://github.com/PRVTPRO/Amnezia-Web-Panel/releases" target="_blank" class="btn btn-primary hidden" id="downloadUpdateBtn" style="flex:1; text-decoration: none; justify-content: center;">
                        ⬇️ {{ _('download_update') }}
                    </a>
                </div>
            </div>
        </div>
    </div>
</div>

<div style="margin-top: var(--space-xl); text-align: right;">
    <button class="btn btn-primary btn-lg" onclick="saveSettings()" id="saveBtn">
        <span>{{ _('save_changes') }}</span>
        <div class="spinner hidden" id="saveSpinner"></div>
    </button>
</div>

<script>
    const serversData = {{ servers | tojson }};
    const botCurrentlyRunning = {{ 'true' if bot_running else 'false' }};

    function updateProtocolsForSync() {
        const serverIdx = document.querySelector('[name="remnawave_server_id"]').value;
        const protoSelect = document.getElementById('syncProtocolSelect');
        protoSelect.innerHTML = '';

        if (serverIdx === '' || !serversData[serverIdx]) return;

        const protocols = serversData[serverIdx].protocols || {};
        let count = 0;

        for (const [key, info] of Object.entries(protocols)) {
            if (info.installed) {
                const opt = document.createElement('option');
                opt.value = key;
                opt.textContent = key === 'awg' ? 'AmneziaWG' : (key === 'awg2' ? 'AmneziaWG 2.0' : (key === 'awg_legacy' ? 'AWG Legacy' : (key === 'xray' ? 'Xray' : key.toUpperCase())));
                if (key === "{{ settings.sync.remnawave_protocol }}") opt.selected = true;
                protoSelect.appendChild(opt);
                count++;
            }
        }

        if (count === 0) {
            const opt = document.createElement('option');
            opt.textContent = _('no_protocols');
            opt.disabled = true;
            protoSelect.appendChild(opt);
        }
    }

    document.querySelector('[name="remnawave_sync"]').addEventListener('change', (e) => {
        document.getElementById('remnawaveFields').style.display = e.target.checked ? 'block' : 'none';
    });

    document.getElementById('syncCreateConns').addEventListener('change', (e) => {
        document.getElementById('autoConnFields').style.display = e.target.checked ? 'block' : 'none';
        if (e.target.checked) updateProtocolsForSync();
    });

    document.getElementById('ssl_enabled').addEventListener('change', (e) => {
        document.getElementById('sslFields').style.display = e.target.checked ? 'block' : 'none';
    });

    async function syncRemnawaveNow() {
        const btn = document.getElementById('syncNowBtn');
        const text = document.getElementById('syncNowBtnText');
        const spinner = document.getElementById('syncNowSpinner');

        btn.disabled = true;
        text.textContent = _('sync_running');
        spinner.classList.remove('hidden');

        try {
            const res = await fetch('/api/settings/sync_now', { method: 'POST' });
            const data = await res.json();
            if (data.status === 'success') {
                showToast(_('sync_success').replace('{}', data.count), 'success');
                setTimeout(() => window.location.reload(), 1500);
            } else {
                throw new Error(data.message || 'Error occurred');
            }
        } catch (err) {
            showToast(`${_('error')}: ` + err.message, 'error');
        } finally {
            btn.disabled = false;
            text.textContent = `🔄 ${_('sync_now_btn')}`;
            spinner.classList.add('hidden');
        }
    }

    async function deleteSyncRemnawave() {
        if (!confirm(_('delete_sync_confirm'))) return;

        const btn = document.getElementById('syncDelBtn');
        const text = document.getElementById('syncDelBtnText');
        const spinner = document.getElementById('syncDelSpinner');

        btn.disabled = true;
        text.textContent = _('deleting');
        spinner.classList.remove('hidden');

        try {
            const res = await fetch('/api/settings/sync_delete', { method: 'POST' });
            const data = await res.json();
            if (data.status === 'success') {
                showToast(_('sync_deleted').replace('{}', data.count), 'success');
                setTimeout(() => window.location.reload(), 1500);
            }
        } catch (err) {
            showToast(`${_('error')}: ` + err.message, 'error');
        } finally {
            btn.disabled = false;
            text.textContent = `🗑 ${_('delete_sync_btn')}`;
            spinner.classList.add('hidden');
        }
    }

    async function saveSettings() {
        const btn = document.getElementById('saveBtn');
        const spinner = document.getElementById('saveSpinner');
        btn.disabled = true;
        spinner.classList.remove('hidden');

        const appForm = document.getElementById('appearanceForm');
        const syncForm = document.getElementById('syncForm');

        const appearance = {
            title: appForm.title.value,
            logo: appForm.logo.value,
            subtitle: appForm.subtitle.value
        };

        const sync = {
            remnawave_url: syncForm.remnawave_url.value,
            remnawave_api_key: syncForm.remnawave_api_key.value,
            remnawave_sync: syncForm.remnawave_sync.checked,
            remnawave_sync_users: syncForm.remnawave_sync_users.checked,
            remnawave_create_conns: syncForm.remnawave_create_conns.checked,
            remnawave_server_id: parseInt(syncForm.remnawave_server_id.value),
            remnawave_protocol: syncForm.remnawave_protocol.value
        };


        const captcha = {
            enabled: document.getElementById('captcha_enabled').checked
        };

        const telegram = {
            token: document.getElementById('tg_token').value.trim(),
            enabled: botCurrentlyRunning
        };

        const ssl = {
            enabled: document.getElementById('ssl_enabled').checked,
            domain: document.getElementById('ssl_domain').value.trim(),
            cert_path: document.getElementById('ssl_cert_path').value.trim(),
            key_path: document.getElementById('ssl_key_path').value.trim(),
            cert_text: document.getElementById('ssl_cert_text').value.trim(),
            key_text: document.getElementById('ssl_key_text').value.trim(),
            panel_port: parseInt(document.getElementById('panel_port').value || '5000')
        };

        try {
            const res = await fetch('/api/settings/save', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ appearance, sync, captcha, telegram, ssl })
            });
            if (!res.ok) throw new Error(_('error'));
            showToast(_('settings_saved'), 'success');
            setTimeout(() => window.location.reload(), 1000);
        } catch (err) {
            showToast(err.message, 'error');
        } finally {
            btn.disabled = false;
            spinner.classList.add('hidden');
        }
    }

    async function toggleBot() {
        const btn = document.getElementById('toggleBotBtn');
        const text = document.getElementById('toggleBotBtnText');
        const spinner = document.getElementById('toggleBotSpinner');
        btn.disabled = true;
        spinner.classList.remove('hidden');
        try {
            const res = await fetch('/api/settings/telegram/toggle', { method: 'POST' });
            const data = await res.json();
            if (!res.ok) throw new Error(data.error || _('error'));
            const running = data.bot_running;
            document.getElementById('botStatusBadge').className = running ? 'badge badge-success' : 'badge badge-secondary';
            document.getElementById('botStatusBadge').textContent = running ? _('bot_running') : _('bot_stopped');
            text.textContent = running ? _('bot_stop_btn') : _('bot_start_btn');
            showToast(running ? _('bot_started') : _('bot_stopped_msg'), 'success');
        } catch (err) {
            showToast(`${_('error')}: ` + err.message, 'error');
        } finally {
            btn.disabled = false;
            spinner.classList.add('hidden');
        }
    }

    async function handleRestore(e) {
        const file = e.target.files[0];
        if (!file) return;

        if (!confirm(_('restore_confirm'))) {
            e.target.value = '';
            return;
        }

        const btn = document.getElementById('restoreBtn');
        btn.disabled = true;
        const originalText = btn.innerHTML;
        btn.innerHTML = `<div class="spinner" style="width:14px; height:14px;"></div> ${_('loading')}`;

        const formData = new FormData();
        formData.append('file', file);

        try {
            const res = await fetch('/api/settings/backup/restore', {
                method: 'POST',
                body: formData
            });
            const data = await res.json();
            if (data.status === 'success') {
                showToast(_('restore_success'), 'success');
                setTimeout(() => window.location.reload(), 2000);
            } else {
                showToast(data.error || _('invalid_backup_file'), 'error');
            }
        } catch (err) {
            showToast(`${_('error')}: ` + err.message, 'error');
        } finally {
            btn.disabled = false;
            btn.innerHTML = originalText;
            e.target.value = '';
        }
    }

    // Init protocols on load
    if (document.getElementById('syncCreateConns').checked) {
        updateProtocolsForSync();
    }

    async function checkForUpdates() {
        const btn = document.getElementById('checkUpdateBtn');
        const text = document.getElementById('checkUpdateBtnText');
        const spinner = document.getElementById('checkUpdateSpinner');
        const statusDiv = document.getElementById('updateStatus');
        const downloadBtn = document.getElementById('downloadUpdateBtn');
        
        btn.disabled = true;
        text.textContent = "{{ _('checking_updates')|default('Checking...') }}";
        spinner.classList.remove('hidden');
        statusDiv.classList.add('hidden');
        downloadBtn.classList.add('hidden');

        try {
            const response = await fetch('https://api.github.com/repos/PRVTPRO/Amnezia-Web-Panel/releases/latest');
            if (!response.ok) throw new Error('API Error');
            const data = await response.json();
            
            const latestVersion = data.tag_name;
            const currentVersion = '{{ current_version }}';
            
            statusDiv.classList.remove('hidden');
            
            if (latestVersion !== currentVersion && latestVersion) {
                statusDiv.innerHTML = `<span style="color: var(--success); font-weight: bold;">{{ _('update_available')|default('Update available') }}: ${latestVersion}</span>`;
                statusDiv.style.border = '1px solid var(--success)';
                downloadBtn.href = data.html_url;
                downloadBtn.classList.remove('hidden');
            } else {
                statusDiv.innerHTML = `<span style="color: var(--text-muted);">{{ _('up_to_date')|default('Up to date') }}</span>`;
                statusDiv.style.border = '1px solid var(--border-color)';
            }
        } catch (err) {
            showToast('Failed to check for updates: ' + err.message, 'error');
        } finally {
            btn.disabled = false;
            text.textContent = "🔄 {{ _('check_updates')|default('Check for updates') }}";
            spinner.classList.add('hidden');
        }
    }
</script>
{% endblock %}