{% extends "base.html" %}

{% block title %}Settings - Seismo Fleet Manager{% endblock %}

{% block content %}
<div class="mb-8">
    <h1 class="text-3xl font-bold text-gray-900 dark:text-white">Settings</h1>
    <p class="text-gray-600 dark:text-gray-400 mt-1">Configure application preferences and manage fleet data</p>
</div>

<!-- Tab Navigation -->
<div class="flex border-b border-gray-200 dark:border-gray-700 mb-6">
    <button class="settings-tab active-settings-tab" data-tab="general" onclick="showTab('general')">
        <svg class="w-4 h-4 inline-block mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6V4m0 2a2 2 0 100 4m0-4a2 2 0 110 4m-6 8a2 2 0 100-4m0 4a2 2 0 110-4m0 4v2m0-6V4m6 6v10m6-2a2 2 0 100-4m0 4a2 2 0 110-4m0 4v2m0-6V4"></path>
        </svg>
        General
    </button>
    <button class="settings-tab" data-tab="data" onclick="showTab('data')">
        <svg class="w-4 h-4 inline-block mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"></path>
        </svg>
        Roster Management
    </button>
    <button class="settings-tab" data-tab="database" onclick="showTab('database')">
        <svg class="w-4 h-4 inline-block mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 7v10c0 2.21 3.582 4 8 4s8-1.79 8-4V7M4 7c0 2.21 3.582 4 8 4s8-1.79 8-4M4 7c0-2.21 3.582-4 8-4s8 1.79 8 4m0 5c0 2.21-3.582 4-8 4s-8-1.79-8-4"></path>
        </svg>
        Database
    </button>
    <button class="settings-tab" data-tab="advanced" onclick="showTab('advanced')">
        <svg class="w-4 h-4 inline-block mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.065 2.572c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.572 1.065c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.065-2.572c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z"></path>
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"></path>
        </svg>
        Advanced
    </button>
    <button class="settings-tab text-red-600 dark:text-red-400" data-tab="danger" onclick="showTab('danger')">
        <svg class="w-4 h-4 inline-block mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"></path>
        </svg>
        Danger Zone
    </button>
</div>

<!-- General Tab -->
<div id="general-tab" class="tab-content">
    <div class="space-y-6">
        <!-- Display Preferences Card -->
        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
            <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Display Preferences</h2>

            <div class="space-y-4">
                <!-- Timezone -->
                <div>
                    <label for="timezone-select" class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
                        Timezone
                    </label>
                    <select id="timezone-select"
                            class="w-full max-w-md px-4 py-2 text-gray-900 dark:text-gray-100 bg-gray-50 dark:bg-gray-700 border border-gray-300 dark:border-gray-600 rounded-lg focus:outline-none focus:ring-2 focus:ring-seismo-orange">
                        <option value="America/New_York">Eastern Time (ET)</option>
                        <option value="America/Chicago">Central Time (CT)</option>
                        <option value="America/Denver">Mountain Time (MT)</option>
                        <option value="America/Los_Angeles">Pacific Time (PT)</option>
                        <option value="America/Anchorage">Alaska Time (AKT)</option>
                        <option value="Pacific/Honolulu">Hawaii Time (HT)</option>
                        <option value="UTC">UTC</option>
                        <option value="Europe/London">London (GMT/BST)</option>
                        <option value="Europe/Paris">Paris (CET/CEST)</option>
                        <option value="Asia/Tokyo">Tokyo (JST)</option>
                        <option value="Australia/Sydney">Sydney (AEST/AEDT)</option>
                    </select>
                    <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">
                        All timestamps will be displayed in this timezone
                    </p>
                </div>

                <!-- Theme -->
                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
                        Theme
                    </label>
                    <div class="flex gap-4">
                        <label class="flex items-center gap-2 cursor-pointer">
                            <input type="radio" name="theme" value="auto" class="w-4 h-4 text-seismo-orange focus:ring-seismo-orange">
                            <span class="text-sm text-gray-700 dark:text-gray-300">Auto (System)</span>
                        </label>
                        <label class="flex items-center gap-2 cursor-pointer">
                            <input type="radio" name="theme" value="light" class="w-4 h-4 text-seismo-orange focus:ring-seismo-orange">
                            <span class="text-sm text-gray-700 dark:text-gray-300">Light</span>
                        </label>
                        <label class="flex items-center gap-2 cursor-pointer">
                            <input type="radio" name="theme" value="dark" class="w-4 h-4 text-seismo-orange focus:ring-seismo-orange">
                            <span class="text-sm text-gray-700 dark:text-gray-300">Dark</span>
                        </label>
                    </div>
                    <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">
                        Choose your preferred color scheme
                    </p>
                </div>

                <!-- Auto-refresh Interval -->
                <div>
                    <label for="refresh-interval" class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
                        Auto-Refresh Interval
                    </label>
                    <select id="refresh-interval"
                            class="w-full max-w-md px-4 py-2 text-gray-900 dark:text-gray-100 bg-gray-50 dark:bg-gray-700 border border-gray-300 dark:border-gray-600 rounded-lg focus:outline-none focus:ring-2 focus:ring-seismo-orange">
                        <option value="5">5 seconds</option>
                        <option value="10" selected>10 seconds</option>
                        <option value="30">30 seconds</option>
                        <option value="60">1 minute</option>
                        <option value="0">Disabled</option>
                    </select>
                    <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">
                        How often the dashboard should refresh automatically
                    </p>
                </div>
            </div>

            <button onclick="saveGeneralSettings()" class="mt-6 px-6 py-3 bg-seismo-orange hover:bg-orange-600 text-white rounded-lg transition-colors">
                Save Changes
            </button>
        </div>
    </div>
</div>

<!-- Data Management Tab -->
<div id="data-tab" class="tab-content hidden">
    <div class="space-y-6">
        <!-- Export Section -->
        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
            <div class="flex items-start justify-between">
                <div class="flex-1">
                    <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-2">Export Data</h2>
                    <p class="text-gray-600 dark:text-gray-400">
                        Download all roster data as CSV for backup or editing externally
                    </p>
                </div>
                <div>
                    <a href="/api/settings/export-csv"
                       class="px-6 py-3 bg-seismo-orange hover:bg-orange-600 text-white rounded-lg transition-colors inline-flex items-center gap-2">
                        <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4"></path>
                        </svg>
                        Download CSV
                    </a>
                </div>
            </div>
        </div>

        <!-- Import Section (Merge Mode Only) -->
        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
            <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Import Data (Merge Mode)</h2>

            <form id="importMergeForm" class="space-y-4">
                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">CSV File</label>
                    <input type="file" name="file" accept=".csv" required
                           class="block w-full text-sm text-gray-900 dark:text-white border border-gray-300 dark:border-gray-600 rounded-lg cursor-pointer bg-gray-50 dark:bg-slate-700 focus:outline-none">
                    <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">
                        CSV must include column: unit_id (required). Existing units will be updated, new units will be added.
                    </p>
                </div>

                <div id="importMergeResult" class="hidden"></div>

                <button type="submit" class="px-6 py-3 bg-seismo-orange hover:bg-orange-600 text-white rounded-lg transition-colors">
                    Import CSV
                </button>
            </form>
        </div>

        <!-- Roster Management Table -->
        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
            <div class="flex items-center justify-between mb-4">
                <div>
                    <h2 class="text-xl font-semibold text-gray-900 dark:text-white">Roster Units</h2>
                    <p class="text-gray-600 dark:text-gray-400 text-sm mt-1">
                        Manage all units with inline editing and quick actions
                    </p>
                </div>
                <button onclick="refreshRosterTable()" class="px-4 py-2 text-seismo-orange hover:bg-orange-50 dark:hover:bg-orange-900/20 rounded-lg transition-colors">
                    <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"></path>
                    </svg>
                </button>
            </div>

            <!-- Loading State -->
            <div id="rosterTableLoading" class="text-center py-8">
                <div class="inline-block animate-spin rounded-full h-8 w-8 border-b-2 border-seismo-orange"></div>
                <p class="text-gray-600 dark:text-gray-400 mt-2">Loading roster units...</p>
            </div>

            <!-- Table Container -->
            <div id="rosterTableContainer" class="hidden overflow-x-auto">
                <table class="min-w-full divide-y divide-gray-200 dark:divide-gray-700">
                    <thead class="bg-gray-50 dark:bg-gray-700">
                        <tr>
                            <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase">Unit ID</th>
                            <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase">Type</th>
                            <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase">Status</th>
                            <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase">Note</th>
                            <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase">Location</th>
                            <th class="px-4 py-3 text-right text-xs font-medium text-gray-500 dark:text-gray-300 uppercase">Actions</th>
                        </tr>
                    </thead>
                    <tbody id="rosterTableBody" class="bg-white dark:bg-slate-800 divide-y divide-gray-200 dark:divide-gray-700">
                        <!-- Rows will be inserted here by JavaScript -->
                    </tbody>
                </table>
            </div>

            <!-- Empty State -->
            <div id="rosterTableEmpty" class="hidden text-center py-8">
                <svg class="mx-auto h-12 w-12 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20 13V6a2 2 0 00-2-2H6a2 2 0 00-2 2v7m16 0v5a2 2 0 01-2 2H6a2 2 0 01-2-2v-5m16 0h-2.586a1 1 0 00-.707.293l-2.414 2.414a1 1 0 01-.707.293h-3.172a1 1 0 01-.707-.293l-2.414-2.414A1 1 0 006.586 13H4"></path>
                </svg>
                <p class="text-gray-600 dark:text-gray-400 mt-2">No roster units found</p>
            </div>
        </div>

        <!-- CSV Import - Replace Mode -->
        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6 border-2 border-yellow-200 dark:border-yellow-800">
            <div class="bg-yellow-50 dark:bg-yellow-900/20 border-l-4 border-yellow-500 p-4 mb-4">
                <div class="flex">
                    <svg class="w-5 h-5 text-yellow-500 mr-2 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"></path>
                    </svg>
                    <div>
                        <p class="font-semibold text-yellow-800 dark:text-yellow-300">Replace Mode Warning</p>
                        <p class="text-sm text-yellow-700 dark:text-yellow-400 mt-1">This will DELETE all existing roster units before importing.</p>
                    </div>
                </div>
            </div>

            <h2 class="text-xl font-semibold text-yellow-800 dark:text-yellow-300 mb-2">CSV Import - Replace Mode</h2>
            <p class="text-sm text-gray-600 dark:text-gray-400 mb-4">
                Use this to completely replace your roster with a CSV file. All existing roster data will be deleted first.
            </p>

            <form id="importReplaceForm" class="space-y-4">
                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">CSV File</label>
                    <input type="file" name="file" accept=".csv" required
                           class="block w-full text-sm text-gray-900 dark:text-white border border-gray-300 dark:border-gray-600 rounded-lg cursor-pointer bg-gray-50 dark:bg-slate-700 focus:outline-none">
                    <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">
                        All roster data will be replaced with this CSV file
                    </p>
                </div>

                <div id="importReplaceResult" class="hidden"></div>

                <button type="submit" class="px-6 py-3 bg-yellow-600 hover:bg-yellow-700 text-white rounded-lg transition-colors">
                    Replace All Roster Data
                </button>
            </form>
        </div>
    </div>
</div>

<!-- Database Tab -->
<div id="database-tab" class="tab-content hidden">
    <div class="space-y-6">
        <!-- Database Statistics -->
        <div class="border-2 border-blue-300 dark:border-blue-800 rounded-lg p-6 bg-white dark:bg-slate-800">
            <h3 class="font-semibold text-blue-600 dark:text-blue-400 text-lg mb-3">Database Statistics</h3>
            <div id="dbStatsLoading" class="text-center py-4">
                <div class="inline-block animate-spin rounded-full h-6 w-6 border-b-2 border-blue-600"></div>
            </div>
            <div id="dbStatsContent" class="hidden">
                <div class="grid grid-cols-2 md:grid-cols-4 gap-4 text-sm">
                    <div>
                        <p class="text-gray-500 dark:text-gray-400">Database Size</p>
                        <p id="dbSize" class="text-lg font-semibold text-gray-900 dark:text-white">-</p>
                    </div>
                    <div>
                        <p class="text-gray-500 dark:text-gray-400">Total Rows</p>
                        <p id="dbRows" class="text-lg font-semibold text-gray-900 dark:text-white">-</p>
                    </div>
                    <div>
                        <p class="text-gray-500 dark:text-gray-400">Last Modified</p>
                        <p id="dbModified" class="text-lg font-semibold text-gray-900 dark:text-white">-</p>
                    </div>
                    <div>
                        <p class="text-gray-500 dark:text-gray-400">Snapshots</p>
                        <p id="dbSnapshotCount" class="text-lg font-semibold text-gray-900 dark:text-white">-</p>
                    </div>
                </div>
            </div>
            <button onclick="loadDatabaseStats()" class="mt-4 px-4 py-2 text-blue-600 hover:bg-blue-50 dark:hover:bg-blue-900/20 rounded-lg transition-colors text-sm">
                Refresh Stats
            </button>
        </div>

        <!-- Create Snapshot -->
        <div class="border border-green-200 dark:border-green-800 rounded-lg p-6 bg-white dark:bg-slate-800">
            <div class="flex justify-between items-start">
                <div class="flex-1">
                    <h3 class="font-semibold text-green-600 dark:text-green-400">Create Database Snapshot</h3>
                    <p class="text-sm text-gray-600 dark:text-gray-400 mt-1">
                        Create a full backup of the current database state
                    </p>
                </div>
                <button onclick="createSnapshot()" class="px-4 py-2 bg-green-600 hover:bg-green-700 text-white rounded-lg transition-colors whitespace-nowrap">
                    Create Snapshot
                </button>
            </div>
        </div>

        <!-- Snapshots List -->
        <div class="border border-gray-200 dark:border-gray-700 rounded-lg p-6 bg-white dark:bg-slate-800">
            <div class="flex justify-between items-center mb-4">
                <h3 class="font-semibold text-gray-900 dark:text-white">Available Snapshots</h3>
                <button onclick="loadSnapshots()" class="px-3 py-1 text-sm text-seismo-orange hover:bg-orange-50 dark:hover:bg-orange-900/20 rounded transition-colors">
                    Refresh
                </button>
            </div>

            <div id="snapshotsLoading" class="text-center py-4">
                <div class="inline-block animate-spin rounded-full h-6 w-6 border-b-2 border-seismo-orange"></div>
            </div>

            <div id="snapshotsList" class="hidden space-y-2">
                <!-- Snapshots will be inserted here -->
            </div>

            <div id="snapshotsEmpty" class="hidden text-center py-8 text-gray-500 dark:text-gray-400">
                <svg class="mx-auto h-12 w-12 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 8h14M5 8a2 2 0 110-4h14a2 2 0 110 4M5 8v10a2 2 0 002 2h10a2 2 0 002-2V8m-9 4h4"></path>
                </svg>
                <p class="mt-2">No snapshots found</p>
                <p class="text-sm">Create your first snapshot above</p>
            </div>
        </div>

        <!-- Upload Snapshot -->
        <div class="border border-purple-200 dark:border-purple-800 rounded-lg p-6 bg-white dark:bg-slate-800">
            <h3 class="font-semibold text-purple-600 dark:text-purple-400 mb-2">Upload Snapshot</h3>
            <p class="text-sm text-gray-600 dark:text-gray-400 mb-4">
                Upload a database snapshot file from another server
            </p>
            <form id="uploadSnapshotForm" class="space-y-3">
                <input type="file" accept=".db" id="snapshotFileInput" class="block w-full text-sm text-gray-900 dark:text-white border border-gray-300 dark:border-gray-600 rounded-lg cursor-pointer bg-gray-50 dark:bg-slate-700">
                <button type="submit" class="px-4 py-2 bg-purple-600 hover:bg-purple-700 text-white rounded-lg transition-colors">
                    Upload Snapshot
                </button>
            </form>
            <div id="uploadResult" class="hidden mt-3"></div>
        </div>
    </div>
</div>

<!-- Advanced Tab -->
<div id="advanced-tab" class="tab-content hidden">
    <div class="space-y-6">
        <!-- Warning Banner -->
        <div class="bg-yellow-50 dark:bg-yellow-900/20 border-l-4 border-yellow-500 p-4">
            <div class="flex">
                <svg class="w-5 h-5 text-yellow-500 mr-2 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"></path>
                </svg>
                <div>
                    <p class="font-semibold text-yellow-800 dark:text-yellow-300">Advanced Settings</p>
                    <p class="text-sm text-yellow-700 dark:text-yellow-400 mt-1">These settings can affect system behavior. Change with caution.</p>
                </div>
            </div>
        </div>

        <!-- Status Thresholds -->
        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
            <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Status Thresholds</h2>

            <div class="space-y-4">
                <div>
                    <label for="ok-threshold" class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
                        OK Threshold (hours)
                    </label>
                    <input type="number" id="ok-threshold" min="1" max="24"
                           class="w-full max-w-md px-4 py-2 text-gray-900 dark:text-gray-100 bg-gray-50 dark:bg-gray-700 border border-gray-300 dark:border-gray-600 rounded-lg focus:outline-none focus:ring-2 focus:ring-seismo-orange">
                    <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">
                        Units are OK if last seen within this many hours
                    </p>
                </div>

                <div>
                    <label for="pending-threshold" class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
                        Pending Threshold (hours)
                    </label>
                    <input type="number" id="pending-threshold" min="1" max="48"
                           class="w-full max-w-md px-4 py-2 text-gray-900 dark:text-gray-100 bg-gray-50 dark:bg-gray-700 border border-gray-300 dark:border-gray-600 rounded-lg focus:outline-none focus:ring-2 focus:ring-seismo-orange">
                    <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">
                        Units are Pending if last seen within this many hours (units exceeding this are Missing)
                    </p>
                </div>
            </div>

            <button onclick="saveStatusThresholds()" class="mt-6 px-6 py-3 bg-seismo-orange hover:bg-orange-600 text-white rounded-lg transition-colors">
                Save Thresholds
            </button>
        </div>

        <!-- Calibration Defaults -->
        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
            <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Calibration Defaults</h2>

            <div class="space-y-4">
                <div>
                    <label for="cal-interval" class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
                        Calibration Interval (days)
                    </label>
                    <input type="number" id="cal-interval" min="1"
                           class="w-full max-w-md px-4 py-2 text-gray-900 dark:text-gray-100 bg-gray-50 dark:bg-gray-700 border border-gray-300 dark:border-gray-600 rounded-lg focus:outline-none focus:ring-2 focus:ring-seismo-orange">
                    <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">
                        Default interval between calibrations
                    </p>
                </div>

                <div>
                    <label for="cal-warning" class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
                        Warning Threshold (days before due)
                    </label>
                    <input type="number" id="cal-warning" min="1"
                           class="w-full max-w-md px-4 py-2 text-gray-900 dark:text-gray-100 bg-gray-50 dark:bg-gray-700 border border-gray-300 dark:border-gray-600 rounded-lg focus:outline-none focus:ring-2 focus:ring-seismo-orange">
                    <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">
                        Show warnings when calibration is due within this many days
                    </p>
                </div>
            </div>

            <button onclick="saveCalibrationDefaults()" class="mt-6 px-6 py-3 bg-seismo-orange hover:bg-orange-600 text-white rounded-lg transition-colors">
                Save Defaults
            </button>
        </div>
    </div>
</div>

<!-- Danger Zone Tab -->
<div id="danger-tab" class="tab-content hidden">
    <div class="space-y-6">
        <!-- Warning Banner -->
        <div class="bg-red-50 dark:bg-red-900/20 border-l-4 border-red-500 p-4">
            <div class="flex">
                <svg class="w-5 h-5 text-red-500 mr-2 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"></path>
                </svg>
                <div>
                    <p class="font-semibold text-red-800 dark:text-red-300">Danger Zone</p>
                    <p class="text-sm text-red-700 dark:text-red-400 mt-1">These operations are PERMANENT and CANNOT be undone. Proceed with extreme caution.</p>
                </div>
            </div>
        </div>

        <!-- Clear All Data -->
        <div class="border-2 border-red-300 dark:border-red-800 rounded-lg p-6 bg-white dark:bg-slate-800">
            <div class="flex justify-between items-start">
                <div>
                    <h3 class="font-semibold text-red-600 dark:text-red-400 text-lg">Clear All Data</h3>
                    <p class="text-sm text-gray-600 dark:text-gray-400 mt-1">
                        Deletes roster units, emitters, and ignored units. Everything will be lost.
                    </p>
                </div>
                <button onclick="confirmClearAll()" class="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-lg transition-colors whitespace-nowrap">
                    Clear All
                </button>
            </div>
        </div>

        <!-- Clear Roster Only -->
        <div class="border border-red-200 dark:border-red-800 rounded-lg p-6 bg-white dark:bg-slate-800">
            <div class="flex justify-between items-start">
                <div>
                    <h3 class="font-semibold text-gray-900 dark:text-white">Clear Roster Table</h3>
                    <p class="text-sm text-gray-600 dark:text-gray-400 mt-1">
                        Delete all roster units only (keeps emitters and ignored units)
                    </p>
                </div>
                <button onclick="confirmClearRoster()" class="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-lg transition-colors whitespace-nowrap">
                    Clear Roster
                </button>
            </div>
        </div>

        <!-- Clear Emitters Only -->
        <div class="border border-red-200 dark:border-red-800 rounded-lg p-6 bg-white dark:bg-slate-800">
            <div class="flex justify-between items-start">
                <div>
                    <h3 class="font-semibold text-gray-900 dark:text-white">Clear Emitters Table</h3>
                    <p class="text-sm text-gray-600 dark:text-gray-400 mt-1">
                        Delete all auto-discovered emitters (will repopulate automatically)
                    </p>
                </div>
                <button onclick="confirmClearEmitters()" class="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-lg transition-colors whitespace-nowrap">
                    Clear Emitters
                </button>
            </div>
        </div>

        <!-- Clear Ignored Units -->
        <div class="border border-red-200 dark:border-red-800 rounded-lg p-6 bg-white dark:bg-slate-800">
            <div class="flex justify-between items-start">
                <div>
                    <h3 class="font-semibold text-gray-900 dark:text-white">Clear Ignored Units</h3>
                    <p class="text-sm text-gray-600 dark:text-gray-400 mt-1">
                        Remove all units from the ignore list
                    </p>
                </div>
                <button onclick="confirmClearIgnored()" class="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-lg transition-colors whitespace-nowrap">
                    Clear Ignored
                </button>
            </div>
        </div>
    </div>
</div>

<style>
.settings-tab {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #6b7280;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    background: none;
    cursor: pointer;
}

.settings-tab:hover {
    color: #374151;
    background-color: rgba(249, 250, 251, 0.5);
}

.dark .settings-tab:hover {
    color: #d1d5db;
    background-color: rgba(55, 65, 81, 0.3);
}

.active-settings-tab {
    color: #f48b1c !important;
    border-bottom-color: #f48b1c !important;
}

.tab-content {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
</style>

<script>
// ========== TAB MANAGEMENT ==========

function showTab(tabName) {
    // Hide all tabs
    document.querySelectorAll('.tab-content').forEach(tab => {
        tab.classList.add('hidden');
    });

    // Remove active class from all buttons
    document.querySelectorAll('.settings-tab').forEach(btn => {
        btn.classList.remove('active-settings-tab');
    });

    // Show selected tab
    document.getElementById(tabName + '-tab').classList.remove('hidden');

    // Add active class to clicked button
    const clickedButton = document.querySelector(`[data-tab="${tabName}"]`);
    if (clickedButton) {
        clickedButton.classList.add('active-settings-tab');
    }

    // Save last active tab to localStorage
    localStorage.setItem('settings-last-tab', tabName);

    // Load roster table when data tab is shown
    if (tabName === 'data') {
        loadRosterTable();
    }
}

// Restore last active tab on page load
window.addEventListener('DOMContentLoaded', () => {
    const lastTab = localStorage.getItem('settings-last-tab') || 'general';
    showTab(lastTab);
    loadPreferences();
});

// ========== GENERAL TAB - PREFERENCES ==========

let currentPreferences = {};

async function loadPreferences() {
    try {
        const response = await fetch('/api/settings/preferences');
        const prefs = await response.json();
        currentPreferences = prefs;

        // Load timezone
        document.getElementById('timezone-select').value = prefs.timezone || 'America/New_York';

        // Load theme
        const themeRadios = document.querySelectorAll('input[name="theme"]');
        themeRadios.forEach(radio => {
            radio.checked = radio.value === (prefs.theme || 'auto');
        });

        // Load auto-refresh interval
        document.getElementById('refresh-interval').value = prefs.auto_refresh_interval || 10;

        // Load status thresholds
        document.getElementById('ok-threshold').value = prefs.status_ok_threshold_hours || 12;
        document.getElementById('pending-threshold').value = prefs.status_pending_threshold_hours || 24;

        // Load calibration defaults
        document.getElementById('cal-interval').value = prefs.calibration_interval_days || 365;
        document.getElementById('cal-warning').value = prefs.calibration_warning_days || 30;

    } catch (error) {
        console.error('Error loading preferences:', error);
    }
}

async function saveGeneralSettings() {
    const timezone = document.getElementById('timezone-select').value;
    const theme = document.querySelector('input[name="theme"]:checked').value;
    const autoRefreshInterval = parseInt(document.getElementById('refresh-interval').value);

    try {
        const response = await fetch('/api/settings/preferences', {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                timezone,
                theme,
                auto_refresh_interval: autoRefreshInterval
            })
        });

        if (response.ok) {
            // Also update localStorage for immediate effect
            localStorage.setItem('timezone', timezone);

            // Visual feedback
            alert('Settings saved successfully!');

            // Refresh timestamps on page
            if (typeof updateAllTimestamps === 'function') {
                updateAllTimestamps();
            }
        } else {
            const result = await response.json();
            alert('Error saving settings: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('Error saving settings: ' + error.message);
    }
}

async function saveStatusThresholds() {
    const okThreshold = parseInt(document.getElementById('ok-threshold').value);
    const pendingThreshold = parseInt(document.getElementById('pending-threshold').value);

    try {
        const response = await fetch('/api/settings/preferences', {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                status_ok_threshold_hours: okThreshold,
                status_pending_threshold_hours: pendingThreshold
            })
        });

        if (response.ok) {
            alert('Status thresholds saved successfully!');
        } else {
            const result = await response.json();
            alert('Error saving thresholds: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('Error saving thresholds: ' + error.message);
    }
}

async function saveCalibrationDefaults() {
    const calInterval = parseInt(document.getElementById('cal-interval').value);
    const calWarning = parseInt(document.getElementById('cal-warning').value);

    try {
        const response = await fetch('/api/settings/preferences', {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                calibration_interval_days: calInterval,
                calibration_warning_days: calWarning
            })
        });

        if (response.ok) {
            alert('Calibration defaults saved successfully!');
        } else {
            const result = await response.json();
            alert('Error saving defaults: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('Error saving defaults: ' + error.message);
    }
}

// ========== DATA TAB - IMPORT/EXPORT ==========

// Merge Mode Import
document.getElementById('importMergeForm').addEventListener('submit', async function(e) {
    e.preventDefault();

    const formData = new FormData(this);
    const resultDiv = document.getElementById('importMergeResult');

    try {
        const response = await fetch('/api/roster/import-csv', {
            method: 'POST',
            body: formData
        });

        const result = await response.json();

        if (response.ok) {
            resultDiv.className = 'mt-4 p-4 rounded-lg bg-green-100 dark:bg-green-900 text-green-800 dark:text-green-200';
            resultDiv.innerHTML = `
                <p class="font-semibold mb-2">Import Successful!</p>
                <ul class="text-sm space-y-1">
                    <li>✅ Added: ${result.summary.added}</li>
                    <li>🔄 Updated: ${result.summary.updated}</li>
                    <li>⏭️ Skipped: ${result.summary.skipped}</li>
                    <li>❌ Errors: ${result.summary.errors}</li>
                </ul>
            `;
            resultDiv.classList.remove('hidden');

            // Refresh roster table
            setTimeout(() => {
                this.reset();
                resultDiv.classList.add('hidden');
                loadRosterTable();
            }, 3000);
        } else {
            resultDiv.className = 'mt-4 p-4 rounded-lg bg-red-100 dark:bg-red-900 text-red-800 dark:text-red-200';
            resultDiv.innerHTML = `<p class="font-semibold">Import Failed</p><p class="text-sm">${result.detail || 'Unknown error'}</p>`;
            resultDiv.classList.remove('hidden');
        }
    } catch (error) {
        resultDiv.className = 'mt-4 p-4 rounded-lg bg-red-100 dark:bg-red-900 text-red-800 dark:text-red-200';
        resultDiv.innerHTML = `<p class="font-semibold">Import Failed</p><p class="text-sm">${error.message}</p>`;
        resultDiv.classList.remove('hidden');
    }
});

// Replace Mode Import
document.getElementById('importReplaceForm').addEventListener('submit', async function(e) {
    e.preventDefault();

    const formData = new FormData(this);
    const resultDiv = document.getElementById('importReplaceResult');

    // Get confirmation
    try {
        const stats = await fetch('/api/settings/stats').then(r => r.json());

        const confirmMsg = `⚠️ REPLACE MODE WARNING ⚠️

This will DELETE all ${stats.roster} roster units first, then import from CSV.

THIS CANNOT BE UNDONE!

Make sure you have a backup before proceeding.

Continue?`;

        if (!confirm(confirmMsg)) {
            return;
        }
    } catch (error) {
        alert('Error fetching statistics: ' + error.message);
        return;
    }

    try {
        const response = await fetch('/api/settings/import-csv-replace', {
            method: 'POST',
            body: formData
        });

        const result = await response.json();

        if (response.ok) {
            resultDiv.className = 'mt-4 p-4 rounded-lg bg-green-100 dark:bg-green-900 text-green-800 dark:text-green-200';
            resultDiv.innerHTML = `
                <p class="font-semibold mb-2">Replace Import Successful!</p>
                <ul class="text-sm space-y-1">
                    <li>🗑️ Deleted: ${result.deleted}</li>
                    <li>✅ Added: ${result.added}</li>
                </ul>
            `;
            resultDiv.classList.remove('hidden');

            // Refresh roster table
            setTimeout(() => {
                this.reset();
                resultDiv.classList.add('hidden');
                loadRosterTable();
            }, 3000);
        } else {
            resultDiv.className = 'mt-4 p-4 rounded-lg bg-red-100 dark:bg-red-900 text-red-800 dark:text-red-200';
            resultDiv.innerHTML = `<p class="font-semibold">Import Failed</p><p class="text-sm">${result.detail || 'Unknown error'}</p>`;
            resultDiv.classList.remove('hidden');
        }
    } catch (error) {
        resultDiv.className = 'mt-4 p-4 rounded-lg bg-red-100 dark:bg-red-900 text-red-800 dark:text-red-200';
        resultDiv.innerHTML = `<p class="font-semibold">Import Failed</p><p class="text-sm">${error.message}</p>`;
        resultDiv.classList.remove('hidden');
    }
});

// ========== ROSTER MANAGEMENT TABLE ==========

async function loadRosterTable() {
    const loading = document.getElementById('rosterTableLoading');
    const container = document.getElementById('rosterTableContainer');
    const empty = document.getElementById('rosterTableEmpty');
    const tbody = document.getElementById('rosterTableBody');

    try {
        loading.classList.remove('hidden');
        container.classList.add('hidden');
        empty.classList.add('hidden');

        const response = await fetch('/api/settings/roster-units');
        const units = await response.json();

        if (units.length === 0) {
            loading.classList.add('hidden');
            empty.classList.remove('hidden');
            return;
        }

        tbody.innerHTML = units.map(unit => createRosterRow(unit)).join('');

        loading.classList.add('hidden');
        container.classList.remove('hidden');
    } catch (error) {
        loading.classList.add('hidden');
        alert('Error loading roster: ' + error.message);
    }
}

function createRosterRow(unit) {
    const statusBadges = [];
    if (unit.deployed) {
        statusBadges.push('<span class="inline-flex items-center px-2 py-1 rounded text-xs font-medium bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-300">Deployed</span>');
    } else {
        statusBadges.push('<span class="inline-flex items-center px-2 py-1 rounded text-xs font-medium bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-300">Benched</span>');
    }
    if (unit.retired) {
        statusBadges.push('<span class="inline-flex items-center px-2 py-1 rounded text-xs font-medium bg-purple-100 text-purple-800 dark:bg-purple-900 dark:text-purple-300">Retired</span>');
    }

    return `
        <tr class="hover:bg-gray-50 dark:hover:bg-gray-700 transition-colors" data-unit-id="${unit.id}">
            <td class="px-4 py-3 whitespace-nowrap">
                <a href="/unit/${unit.id}" class="text-sm font-medium text-seismo-orange hover:text-orange-600 dark:hover:text-orange-400">
                    ${unit.id}
                </a>
            </td>
            <td class="px-4 py-3 whitespace-nowrap">
                <div class="text-sm text-gray-900 dark:text-white">${unit.device_type}</div>
                <div class="text-xs text-gray-500 dark:text-gray-400">${unit.unit_type}</div>
            </td>
            <td class="px-4 py-3">
                <div class="flex flex-wrap gap-1">
                    ${statusBadges.join('')}
                </div>
            </td>
            <td class="px-4 py-3">
                <div class="text-sm text-gray-600 dark:text-gray-400 max-w-xs truncate" title="${unit.note}">
                    ${unit.note || '<span class="text-gray-400 italic">No note</span>'}
                </div>
            </td>
            <td class="px-4 py-3">
                <div class="text-sm text-gray-600 dark:text-gray-400 max-w-xs truncate" title="${unit.location}">
                    ${unit.location || '<span class="text-gray-400 italic">—</span>'}
                </div>
            </td>
            <td class="px-4 py-3 whitespace-nowrap text-right text-sm">
                <div class="flex justify-end gap-1">
                    <button onclick="toggleDeployed('${unit.id}', ${unit.deployed})"
                        class="p-2 hover:bg-gray-100 dark:hover:bg-gray-600 rounded transition-colors"
                        title="${unit.deployed ? 'Bench Unit' : 'Deploy Unit'}">
                        <svg class="w-4 h-4 ${unit.deployed ? 'text-green-600 dark:text-green-400' : 'text-gray-400'}" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"></path>
                        </svg>
                    </button>
                    <button onclick="toggleRetired('${unit.id}', ${unit.retired})"
                        class="p-2 hover:bg-gray-100 dark:hover:bg-gray-600 rounded transition-colors"
                        title="${unit.retired ? 'Unretire Unit' : 'Retire Unit'}">
                        <svg class="w-4 h-4 ${unit.retired ? 'text-purple-600 dark:text-purple-400' : 'text-gray-400'}" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4"></path>
                        </svg>
                    </button>
                    <button onclick="editUnit('${unit.id}')"
                        class="p-2 hover:bg-gray-100 dark:hover:bg-gray-600 rounded transition-colors text-blue-600 dark:text-blue-400"
                        title="Edit Unit">
                        <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"></path>
                        </svg>
                    </button>
                    <button onclick="confirmDeleteUnit('${unit.id}')"
                        class="p-2 hover:bg-gray-100 dark:hover:bg-gray-600 rounded transition-colors text-red-600 dark:text-red-400"
                        title="Delete Unit">
                        <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"></path>
                        </svg>
                    </button>
                </div>
            </td>
        </tr>
    `;
}

async function toggleDeployed(unitId, currentState) {
    try {
        const response = await fetch(`/api/roster/set-deployed/${unitId}`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
            body: `deployed=${!currentState}`
        });

        if (response.ok) {
            await loadRosterTable();
        } else {
            const result = await response.json();
            alert('Error: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('Error: ' + error.message);
    }
}

async function toggleRetired(unitId, currentState) {
    try {
        const response = await fetch(`/api/roster/set-retired/${unitId}`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
            body: `retired=${!currentState}`
        });

        if (response.ok) {
            await loadRosterTable();
        } else {
            const result = await response.json();
            alert('Error: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('Error: ' + error.message);
    }
}

function editUnit(unitId) {
    window.location.href = `/unit/${unitId}`;
}

async function confirmDeleteUnit(unitId) {
    if (!confirm(`Delete unit ${unitId}?\n\nThis will permanently remove the unit from the roster.\n\nContinue?`)) {
        return;
    }

    try {
        const response = await fetch(`/api/roster/${unitId}`, {
            method: 'DELETE'
        });

        if (response.ok) {
            await loadRosterTable();
            alert(`✅ Unit ${unitId} deleted successfully`);
        } else {
            const result = await response.json();
            alert('❌ Error: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('❌ Error: ' + error.message);
    }
}

function refreshRosterTable() {
    loadRosterTable();
}

// ========== DANGER ZONE ==========

async function confirmClearAll() {
    try {
        const stats = await fetch('/api/settings/stats').then(r => r.json());

        const message = `⚠️ CLEAR ALL DATA WARNING ⚠️

You are about to DELETE ALL data:

• Roster units: ${stats.roster}
• Emitters: ${stats.emitters}
• Ignored units: ${stats.ignored}
• TOTAL: ${stats.total} records

THIS ACTION CANNOT BE UNDONE!

Export a backup first if needed.

Are you absolutely sure?`;

        if (!confirm(message)) {
            return;
        }

        const response = await fetch('/api/settings/clear-all', {
            method: 'POST'
        });

        if (response.ok) {
            const result = await response.json();
            alert(`✅ Success! Deleted ${result.deleted.total} records\n\n• Roster: ${result.deleted.roster}\n• Emitters: ${result.deleted.emitters}\n• Ignored: ${result.deleted.ignored}`);
            location.reload();
        } else {
            const result = await response.json();
            alert('❌ Error: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('❌ Error: ' + error.message);
    }
}

async function confirmClearRoster() {
    try {
        const stats = await fetch('/api/settings/stats').then(r => r.json());

        if (!confirm(`Delete all ${stats.roster} roster units?\n\nThis cannot be undone!`)) {
            return;
        }

        const response = await fetch('/api/settings/clear-roster', {
            method: 'POST'
        });

        if (response.ok) {
            const result = await response.json();
            alert(`✅ Success! Deleted ${result.deleted} roster units`);
            location.reload();
        } else {
            const result = await response.json();
            alert('❌ Error: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('❌ Error: ' + error.message);
    }
}

async function confirmClearEmitters() {
    try {
        const stats = await fetch('/api/settings/stats').then(r => r.json());

        if (!confirm(`Delete all ${stats.emitters} emitters?\n\nEmitters will repopulate automatically from heartbeats.`)) {
            return;
        }

        const response = await fetch('/api/settings/clear-emitters', {
            method: 'POST'
        });

        if (response.ok) {
            const result = await response.json();
            alert(`✅ Success! Deleted ${result.deleted} emitters`);
            location.reload();
        } else {
            const result = await response.json();
            alert('❌ Error: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('❌ Error: ' + error.message);
    }
}

async function confirmClearIgnored() {
    try {
        const stats = await fetch('/api/settings/stats').then(r => r.json());

        if (!confirm(`Remove all ${stats.ignored} units from ignore list?\n\nThey will appear as unknown emitters again.`)) {
            return;
        }

        const response = await fetch('/api/settings/clear-ignored', {
            method: 'POST'
        });

        if (response.ok) {
            const result = await response.json();
            alert(`✅ Success! Removed ${result.deleted} units from ignore list`);
            location.reload();
        } else {
            const result = await response.json();
            alert('❌ Error: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('❌ Error: ' + error.message);
    }
}

// ========== DATABASE MANAGEMENT ==========

async function loadDatabaseStats() {
    const loading = document.getElementById('dbStatsLoading');
    const content = document.getElementById('dbStatsContent');

    try {
        loading.classList.remove('hidden');
        content.classList.add('hidden');

        const response = await fetch('/api/settings/database/stats');
        const stats = await response.json();

        // Update stats display
        document.getElementById('dbSize').textContent = stats.size_mb + ' MB';
        document.getElementById('dbRows').textContent = stats.total_rows.toLocaleString();

        const lastMod = new Date(stats.last_modified);
        document.getElementById('dbModified').textContent = lastMod.toLocaleDateString();

        // Load snapshot count
        const snapshotsResp = await fetch('/api/settings/database/snapshots');
        const snapshotsData = await snapshotsResp.json();
        document.getElementById('dbSnapshotCount').textContent = snapshotsData.count;

        loading.classList.add('hidden');
        content.classList.remove('hidden');
    } catch (error) {
        loading.classList.add('hidden');
        alert('Error loading database stats: ' + error.message);
    }
}

async function createSnapshot() {
    const description = prompt('Enter a description for this snapshot (optional):');

    try {
        const response = await fetch('/api/settings/database/snapshot', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ description: description || null })
        });

        const result = await response.json();

        if (response.ok) {
            alert(`✅ Snapshot created successfully!\n\nFilename: ${result.snapshot.filename}\nSize: ${result.snapshot.size_mb} MB`);
            loadSnapshots();
            loadDatabaseStats();
        } else {
            alert('❌ Error: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('❌ Error: ' + error.message);
    }
}

async function loadSnapshots() {
    const loading = document.getElementById('snapshotsLoading');
    const list = document.getElementById('snapshotsList');
    const empty = document.getElementById('snapshotsEmpty');

    try {
        loading.classList.remove('hidden');
        list.classList.add('hidden');
        empty.classList.add('hidden');

        const response = await fetch('/api/settings/database/snapshots');
        const data = await response.json();

        if (data.snapshots.length === 0) {
            loading.classList.add('hidden');
            empty.classList.remove('hidden');
            return;
        }

        list.innerHTML = data.snapshots.map(snapshot => createSnapshotCard(snapshot)).join('');

        loading.classList.add('hidden');
        list.classList.remove('hidden');
    } catch (error) {
        loading.classList.add('hidden');
        alert('Error loading snapshots: ' + error.message);
    }
}

function createSnapshotCard(snapshot) {
    const createdDate = new Date(snapshot.created_at_iso);
    const dateStr = createdDate.toLocaleString();

    return `
        <div class="border border-gray-200 dark:border-gray-700 rounded-lg p-4 bg-gray-50 dark:bg-gray-700/50">
            <div class="flex justify-between items-start">
                <div class="flex-1">
                    <div class="flex items-center gap-2">
                        <h4 class="font-medium text-gray-900 dark:text-white">${snapshot.filename}</h4>
                        <span class="text-xs px-2 py-1 rounded ${snapshot.type === 'manual' ? 'bg-blue-100 text-blue-800 dark:bg-blue-900 dark:text-blue-300' : 'bg-purple-100 text-purple-800 dark:bg-purple-900 dark:text-purple-300'}">
                            ${snapshot.type}
                        </span>
                    </div>
                    <p class="text-sm text-gray-600 dark:text-gray-400 mt-1">${snapshot.description}</p>
                    <div class="flex gap-4 mt-2 text-xs text-gray-500 dark:text-gray-400">
                        <span>📅 ${dateStr}</span>
                        <span>💾 ${snapshot.size_mb} MB</span>
                    </div>
                </div>
                <div class="flex gap-2 ml-4">
                    <button onclick="downloadSnapshot('${snapshot.filename}')"
                        class="p-2 hover:bg-gray-200 dark:hover:bg-gray-600 rounded transition-colors text-blue-600 dark:text-blue-400"
                        title="Download">
                        <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4"></path>
                        </svg>
                    </button>
                    <button onclick="restoreSnapshot('${snapshot.filename}')"
                        class="p-2 hover:bg-gray-200 dark:hover:bg-gray-600 rounded transition-colors text-green-600 dark:text-green-400"
                        title="Restore">
                        <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"></path>
                        </svg>
                    </button>
                    <button onclick="deleteSnapshot('${snapshot.filename}')"
                        class="p-2 hover:bg-gray-200 dark:hover:bg-gray-600 rounded transition-colors text-red-600 dark:text-red-400"
                        title="Delete">
                        <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"></path>
                        </svg>
                    </button>
                </div>
            </div>
        </div>
    `;
}

function downloadSnapshot(filename) {
    window.location.href = `/api/settings/database/snapshot/${filename}`;
}

async function restoreSnapshot(filename) {
    const confirmMsg = `⚠️ RESTORE DATABASE WARNING ⚠️

This will REPLACE the current database with snapshot:
${filename}

A backup of the current database will be created automatically before restoring.

THIS ACTION WILL RESTART THE APPLICATION!

Continue?`;

    if (!confirm(confirmMsg)) {
        return;
    }

    try {
        const response = await fetch('/api/settings/database/restore', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                filename: filename,
                create_backup: true
            })
        });

        const result = await response.json();

        if (response.ok) {
            alert(`✅ Database restored successfully!\n\nRestored from: ${result.restored_from}\nBackup created: ${result.backup_created}\n\nThe page will now reload.`);
            location.reload();
        } else {
            alert('❌ Error: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('❌ Error: ' + error.message);
    }
}

async function deleteSnapshot(filename) {
    if (!confirm(`Delete snapshot ${filename}?\n\nThis cannot be undone.`)) {
        return;
    }

    try {
        const response = await fetch(`/api/settings/database/snapshot/${filename}`, {
            method: 'DELETE'
        });

        const result = await response.json();

        if (response.ok) {
            alert(`✅ Snapshot deleted: ${filename}`);
            loadSnapshots();
            loadDatabaseStats();
        } else {
            alert('❌ Error: ' + (result.detail || 'Unknown error'));
        }
    } catch (error) {
        alert('❌ Error: ' + error.message);
    }
}

// Upload snapshot form handler
document.getElementById('uploadSnapshotForm').addEventListener('submit', async function(e) {
    e.preventDefault();

    const fileInput = document.getElementById('snapshotFileInput');
    const resultDiv = document.getElementById('uploadResult');

    if (!fileInput.files[0]) {
        alert('Please select a file');
        return;
    }

    const formData = new FormData();
    formData.append('file', fileInput.files[0]);

    try {
        const response = await fetch('/api/settings/database/upload-snapshot', {
            method: 'POST',
            body: formData
        });

        const result = await response.json();

        if (response.ok) {
            resultDiv.className = 'mt-3 p-3 rounded-lg bg-green-100 dark:bg-green-900 text-green-800 dark:text-green-200';
            resultDiv.innerHTML = `✅ Uploaded: ${result.snapshot.filename} (${result.snapshot.size_mb} MB)`;
            resultDiv.classList.remove('hidden');

            fileInput.value = '';
            loadSnapshots();
            loadDatabaseStats();

            setTimeout(() => {
                resultDiv.classList.add('hidden');
            }, 5000);
        } else {
            resultDiv.className = 'mt-3 p-3 rounded-lg bg-red-100 dark:bg-red-900 text-red-800 dark:text-red-200';
            resultDiv.innerHTML = `❌ Error: ${result.detail || 'Unknown error'}`;
            resultDiv.classList.remove('hidden');
        }
    } catch (error) {
        resultDiv.className = 'mt-3 p-3 rounded-lg bg-red-100 dark:bg-red-900 text-red-800 dark:text-red-200';
        resultDiv.innerHTML = `❌ Error: ${error.message}`;
        resultDiv.classList.remove('hidden');
    }
});

// Load database stats and snapshots when database tab is shown
const originalShowTab = showTab;
showTab = function(tabName) {
    originalShowTab(tabName);
    if (tabName === 'database') {
        loadDatabaseStats();
        loadSnapshots();
    }
};
</script>
{% endblock %}