<?php
/**
 * MSP Quote Wizard - Admin Dashboard
 * Simple PHP admin interface for viewing and managing quotes
 */

session_start();

// Configuration
define('ADMIN_PASSWORD', 'QuoteAdmin2026!'); // Change in production
define('DB_HOST', '172.16.3.30');
define('DB_NAME', 'claudetools');
define('DB_USER', 'claudetools');
define('DB_PASS', 'CT_e8fcd5a3952030a79ed6debae6c954ed');

// Handle logout
if (isset($_GET['logout'])) {
    session_destroy();
    header('Location: index.php');
    exit;
}

// Handle login
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['password'])) {
    if ($_POST['password'] === ADMIN_PASSWORD) {
        $_SESSION['admin_authenticated'] = true;
        header('Location: index.php');
        exit;
    } else {
        $login_error = 'Invalid password';
    }
}

// Check authentication
if (!isset($_SESSION['admin_authenticated']) || !$_SESSION['admin_authenticated']) {
    showLoginPage($login_error ?? null);
    exit;
}

// Database connection
try {
    $pdo = new PDO(
        "mysql:host=" . DB_HOST . ";dbname=" . DB_NAME . ";charset=utf8mb4",
        DB_USER,
        DB_PASS,
        [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]
    );
} catch (PDOException $e) {
    die("Database connection failed: " . $e->getMessage());
}

// Handle status update
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['update_status'])) {
    $quote_id = $_POST['quote_id'];
    $new_status = $_POST['new_status'];
    $stmt = $pdo->prepare("UPDATE quotes SET status = ?, updated_at = NOW() WHERE id = ?");
    $stmt->execute([$new_status, $quote_id]);
    header('Location: index.php?updated=1');
    exit;
}

// Get statistics
$stats = getStats($pdo);

// Get quotes with filtering
$status_filter = $_GET['status'] ?? '';
$search = $_GET['search'] ?? '';
$quotes = getQuotes($pdo, $status_filter, $search);

// Get single quote details if requested
$quote_detail = null;
if (isset($_GET['id'])) {
    $quote_detail = getQuoteDetail($pdo, $_GET['id']);
}

// Helper functions
function getStats($pdo) {
    $stats = [];

    // Total quotes
    $stmt = $pdo->query("SELECT COUNT(*) FROM quotes");
    $stats['total'] = $stmt->fetchColumn();

    // By status
    $stmt = $pdo->query("SELECT status, COUNT(*) as count FROM quotes GROUP BY status");
    $stats['by_status'] = $stmt->fetchAll(PDO::FETCH_KEY_PAIR);

    // Total monthly value (submitted quotes only)
    $stmt = $pdo->query("SELECT COALESCE(SUM(monthly_total), 0) FROM quotes WHERE status = 'submitted'");
    $stats['total_monthly'] = $stmt->fetchColumn();

    // This month
    $stmt = $pdo->query("SELECT COUNT(*) FROM quotes WHERE created_at >= DATE_FORMAT(NOW(), '%Y-%m-01')");
    $stats['this_month'] = $stmt->fetchColumn();

    return $stats;
}

function getQuotes($pdo, $status_filter = '', $search = '') {
    $sql = "SELECT q.*,
            (SELECT COUNT(*) FROM quote_items WHERE quote_id = q.id) as item_count
            FROM quotes q WHERE 1=1";
    $params = [];

    if ($status_filter) {
        $sql .= " AND q.status = ?";
        $params[] = $status_filter;
    }

    if ($search) {
        $sql .= " AND (q.company_name LIKE ? OR q.contact_name LIKE ? OR q.contact_email LIKE ?)";
        $params[] = "%$search%";
        $params[] = "%$search%";
        $params[] = "%$search%";
    }

    $sql .= " ORDER BY q.created_at DESC LIMIT 100";

    $stmt = $pdo->prepare($sql);
    $stmt->execute($params);
    return $stmt->fetchAll(PDO::FETCH_ASSOC);
}

function getQuoteDetail($pdo, $id) {
    // Get quote
    $stmt = $pdo->prepare("SELECT * FROM quotes WHERE id = ?");
    $stmt->execute([$id]);
    $quote = $stmt->fetch(PDO::FETCH_ASSOC);

    if (!$quote) return null;

    // Get items
    $stmt = $pdo->prepare("SELECT * FROM quote_items WHERE quote_id = ? ORDER BY category, created_at");
    $stmt->execute([$id]);
    $quote['items'] = $stmt->fetchAll(PDO::FETCH_ASSOC);

    // Get activity
    $stmt = $pdo->prepare("SELECT * FROM quote_activity WHERE quote_id = ? ORDER BY created_at DESC");
    $stmt->execute([$id]);
    $quote['activities'] = $stmt->fetchAll(PDO::FETCH_ASSOC);

    return $quote;
}

function showLoginPage($error = null) {
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Quote Admin - Login</title>
    <script src="https://cdn.tailwindcss.com"></script>
</head>
<body class="bg-gray-900 min-h-screen flex items-center justify-center">
    <div class="bg-gray-800 p-8 rounded-lg shadow-xl w-full max-w-md">
        <h1 class="text-2xl font-bold text-white mb-6 text-center">Quote Admin</h1>
        <?php if ($error): ?>
            <div class="bg-red-500/20 border border-red-500 text-red-400 px-4 py-2 rounded mb-4">
                <?= htmlspecialchars($error) ?>
            </div>
        <?php endif; ?>
        <form method="POST">
            <div class="mb-4">
                <label class="block text-gray-400 text-sm mb-2">Password</label>
                <input type="password" name="password" required autofocus
                    class="w-full bg-gray-700 border border-gray-600 rounded px-4 py-2 text-white focus:outline-none focus:border-blue-500">
            </div>
            <button type="submit" class="w-full bg-blue-600 hover:bg-blue-700 text-white font-semibold py-2 px-4 rounded transition">
                Login
            </button>
        </form>
    </div>
</body>
</html>
<?php
    exit;
}

function formatMoney($amount) {
    return '$' . number_format((float)$amount, 2);
}

function statusBadge($status) {
    $colors = [
        'draft' => 'bg-gray-500',
        'submitted' => 'bg-blue-500',
        'viewed' => 'bg-purple-500',
        'followed_up' => 'bg-yellow-500',
        'converted' => 'bg-green-500',
        'expired' => 'bg-red-500',
    ];
    $color = $colors[$status] ?? 'bg-gray-500';
    return "<span class=\"px-2 py-1 rounded text-xs font-medium text-white $color\">" . ucfirst(str_replace('_', ' ', $status)) . "</span>";
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Quote Admin Dashboard</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <style>
        .stat-card { transition: transform 0.2s; }
        .stat-card:hover { transform: translateY(-2px); }
    </style>
</head>
<body class="bg-gray-900 min-h-screen text-gray-100">
    <!-- Header -->
    <header class="bg-gray-800 border-b border-gray-700">
        <div class="max-w-7xl mx-auto px-4 py-4 flex items-center justify-between">
            <div class="flex items-center gap-4">
                <h1 class="text-xl font-bold text-white">Quote Admin</h1>
                <span class="text-gray-400 text-sm">azcomputerguru.com</span>
            </div>
            <a href="?logout=1" class="text-gray-400 hover:text-white text-sm">Logout</a>
        </div>
    </header>

    <main class="max-w-7xl mx-auto px-4 py-6">
        <?php if (isset($_GET['updated'])): ?>
            <div class="bg-green-500/20 border border-green-500 text-green-400 px-4 py-2 rounded mb-6">
                Quote status updated successfully.
            </div>
        <?php endif; ?>

        <!-- Stats Cards -->
        <div class="grid grid-cols-2 md:grid-cols-4 gap-4 mb-8">
            <div class="stat-card bg-gray-800 rounded-lg p-4 border border-gray-700">
                <div class="text-gray-400 text-sm">Total Quotes</div>
                <div class="text-3xl font-bold text-white"><?= $stats['total'] ?></div>
            </div>
            <div class="stat-card bg-gray-800 rounded-lg p-4 border border-gray-700">
                <div class="text-gray-400 text-sm">Submitted</div>
                <div class="text-3xl font-bold text-blue-400"><?= $stats['by_status']['submitted'] ?? 0 ?></div>
            </div>
            <div class="stat-card bg-gray-800 rounded-lg p-4 border border-gray-700">
                <div class="text-gray-400 text-sm">Converted</div>
                <div class="text-3xl font-bold text-green-400"><?= $stats['by_status']['converted'] ?? 0 ?></div>
            </div>
            <div class="stat-card bg-gray-800 rounded-lg p-4 border border-gray-700">
                <div class="text-gray-400 text-sm">Monthly Value</div>
                <div class="text-2xl font-bold text-emerald-400"><?= formatMoney($stats['total_monthly']) ?></div>
            </div>
        </div>

        <?php if ($quote_detail): ?>
        <!-- Quote Detail View -->
        <div class="bg-gray-800 rounded-lg border border-gray-700 mb-6">
            <div class="p-4 border-b border-gray-700 flex items-center justify-between">
                <h2 class="text-lg font-semibold">Quote Details</h2>
                <a href="index.php" class="text-blue-400 hover:text-blue-300 text-sm">&larr; Back to List</a>
            </div>
            <div class="p-4">
                <div class="grid md:grid-cols-2 gap-6">
                    <!-- Contact Info -->
                    <div>
                        <h3 class="text-sm font-medium text-gray-400 mb-3">Contact Information</h3>
                        <div class="space-y-2">
                            <div><span class="text-gray-500">Company:</span> <span class="text-white"><?= htmlspecialchars($quote_detail['company_name'] ?: '(not provided)') ?></span></div>
                            <div><span class="text-gray-500">Contact:</span> <span class="text-white"><?= htmlspecialchars($quote_detail['contact_name'] ?: '(not provided)') ?></span></div>
                            <div><span class="text-gray-500">Email:</span> <span class="text-white"><?= htmlspecialchars($quote_detail['contact_email'] ?: '(not provided)') ?></span></div>
                            <div><span class="text-gray-500">Phone:</span> <span class="text-white"><?= htmlspecialchars($quote_detail['contact_phone'] ?: '(not provided)') ?></span></div>
                            <div><span class="text-gray-500">Employees:</span> <span class="text-white"><?= $quote_detail['employee_count'] ?></span></div>
                        </div>
                    </div>
                    <!-- Quote Summary -->
                    <div>
                        <h3 class="text-sm font-medium text-gray-400 mb-3">Quote Summary</h3>
                        <div class="space-y-2">
                            <div><span class="text-gray-500">Status:</span> <?= statusBadge($quote_detail['status']) ?></div>
                            <div><span class="text-gray-500">Monthly Total:</span> <span class="text-2xl font-bold text-emerald-400"><?= formatMoney($quote_detail['monthly_total']) ?></span></div>
                            <div><span class="text-gray-500">Setup Total:</span> <span class="text-white"><?= formatMoney($quote_detail['setup_total']) ?></span></div>
                            <div><span class="text-gray-500">Created:</span> <span class="text-white"><?= $quote_detail['created_at'] ?></span></div>
                            <?php if ($quote_detail['submitted_at']): ?>
                            <div><span class="text-gray-500">Submitted:</span> <span class="text-white"><?= $quote_detail['submitted_at'] ?></span></div>
                            <?php endif; ?>
                        </div>
                        <!-- Status Update Form -->
                        <form method="POST" class="mt-4">
                            <input type="hidden" name="quote_id" value="<?= $quote_detail['id'] ?>">
                            <div class="flex gap-2">
                                <select name="new_status" class="bg-gray-700 border border-gray-600 rounded px-3 py-2 text-white text-sm">
                                    <option value="draft" <?= $quote_detail['status'] === 'draft' ? 'selected' : '' ?>>Draft</option>
                                    <option value="submitted" <?= $quote_detail['status'] === 'submitted' ? 'selected' : '' ?>>Submitted</option>
                                    <option value="viewed" <?= $quote_detail['status'] === 'viewed' ? 'selected' : '' ?>>Viewed</option>
                                    <option value="followed_up" <?= $quote_detail['status'] === 'followed_up' ? 'selected' : '' ?>>Followed Up</option>
                                    <option value="converted" <?= $quote_detail['status'] === 'converted' ? 'selected' : '' ?>>Converted</option>
                                    <option value="expired" <?= $quote_detail['status'] === 'expired' ? 'selected' : '' ?>>Expired</option>
                                </select>
                                <button type="submit" name="update_status" value="1" class="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded text-sm">
                                    Update Status
                                </button>
                            </div>
                        </form>
                    </div>
                </div>

                <!-- Line Items -->
                <?php if (!empty($quote_detail['items'])): ?>
                <div class="mt-6">
                    <h3 class="text-sm font-medium text-gray-400 mb-3">Line Items</h3>
                    <div class="overflow-x-auto">
                        <table class="w-full text-sm">
                            <thead>
                                <tr class="text-left text-gray-400 border-b border-gray-700">
                                    <th class="pb-2">Category</th>
                                    <th class="pb-2">Product</th>
                                    <th class="pb-2">Qty</th>
                                    <th class="pb-2 text-right">Unit Price</th>
                                    <th class="pb-2 text-right">Monthly</th>
                                </tr>
                            </thead>
                            <tbody>
                                <?php foreach ($quote_detail['items'] as $item): ?>
                                <tr class="border-b border-gray-700/50">
                                    <td class="py-2 text-gray-400"><?= ucfirst(str_replace('_', ' ', $item['category'])) ?></td>
                                    <td class="py-2 text-white"><?= htmlspecialchars($item['product_name']) ?></td>
                                    <td class="py-2"><?= $item['quantity'] ?></td>
                                    <td class="py-2 text-right"><?= formatMoney($item['unit_price']) ?></td>
                                    <td class="py-2 text-right text-emerald-400"><?= formatMoney($item['monthly_amount']) ?></td>
                                </tr>
                                <?php endforeach; ?>
                            </tbody>
                        </table>
                    </div>
                </div>
                <?php endif; ?>

                <!-- Activity Log -->
                <?php if (!empty($quote_detail['activities'])): ?>
                <div class="mt-6">
                    <h3 class="text-sm font-medium text-gray-400 mb-3">Activity Log</h3>
                    <div class="space-y-2">
                        <?php foreach ($quote_detail['activities'] as $activity): ?>
                        <div class="text-sm">
                            <span class="text-gray-500"><?= $activity['created_at'] ?></span>
                            <span class="text-gray-400 mx-2">|</span>
                            <span class="text-white"><?= ucfirst($activity['action']) ?></span>
                            <?php if ($activity['step_name']): ?>
                            <span class="text-gray-500">(<?= $activity['step_name'] ?>)</span>
                            <?php endif; ?>
                        </div>
                        <?php endforeach; ?>
                    </div>
                </div>
                <?php endif; ?>
            </div>
        </div>
        <?php endif; ?>

        <!-- Filters -->
        <div class="bg-gray-800 rounded-lg border border-gray-700 mb-6">
            <form method="GET" class="p-4 flex flex-wrap gap-4 items-end">
                <div>
                    <label class="block text-gray-400 text-sm mb-1">Status</label>
                    <select name="status" class="bg-gray-700 border border-gray-600 rounded px-3 py-2 text-white text-sm">
                        <option value="">All Statuses</option>
                        <option value="draft" <?= $status_filter === 'draft' ? 'selected' : '' ?>>Draft</option>
                        <option value="submitted" <?= $status_filter === 'submitted' ? 'selected' : '' ?>>Submitted</option>
                        <option value="viewed" <?= $status_filter === 'viewed' ? 'selected' : '' ?>>Viewed</option>
                        <option value="followed_up" <?= $status_filter === 'followed_up' ? 'selected' : '' ?>>Followed Up</option>
                        <option value="converted" <?= $status_filter === 'converted' ? 'selected' : '' ?>>Converted</option>
                        <option value="expired" <?= $status_filter === 'expired' ? 'selected' : '' ?>>Expired</option>
                    </select>
                </div>
                <div class="flex-1 min-w-[200px]">
                    <label class="block text-gray-400 text-sm mb-1">Search</label>
                    <input type="text" name="search" value="<?= htmlspecialchars($search) ?>" placeholder="Company, contact, or email..."
                        class="w-full bg-gray-700 border border-gray-600 rounded px-3 py-2 text-white text-sm">
                </div>
                <button type="submit" class="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded text-sm">
                    Filter
                </button>
                <?php if ($status_filter || $search): ?>
                <a href="index.php" class="text-gray-400 hover:text-white text-sm px-4 py-2">Clear</a>
                <?php endif; ?>
            </form>
        </div>

        <!-- Quotes Table -->
        <div class="bg-gray-800 rounded-lg border border-gray-700 overflow-hidden">
            <div class="overflow-x-auto">
                <table class="w-full text-sm">
                    <thead>
                        <tr class="text-left text-gray-400 bg-gray-800/50">
                            <th class="px-4 py-3">Date</th>
                            <th class="px-4 py-3">Company</th>
                            <th class="px-4 py-3">Contact</th>
                            <th class="px-4 py-3">Status</th>
                            <th class="px-4 py-3">Items</th>
                            <th class="px-4 py-3 text-right">Monthly</th>
                            <th class="px-4 py-3"></th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php if (empty($quotes)): ?>
                        <tr>
                            <td colspan="7" class="px-4 py-8 text-center text-gray-500">No quotes found</td>
                        </tr>
                        <?php else: ?>
                        <?php foreach ($quotes as $quote): ?>
                        <tr class="border-t border-gray-700/50 hover:bg-gray-700/30">
                            <td class="px-4 py-3 text-gray-400"><?= date('M j, Y', strtotime($quote['created_at'])) ?></td>
                            <td class="px-4 py-3 text-white"><?= htmlspecialchars($quote['company_name'] ?: '(not provided)') ?></td>
                            <td class="px-4 py-3">
                                <div class="text-white"><?= htmlspecialchars($quote['contact_name'] ?: '-') ?></div>
                                <div class="text-gray-500 text-xs"><?= htmlspecialchars($quote['contact_email'] ?: '') ?></div>
                            </td>
                            <td class="px-4 py-3"><?= statusBadge($quote['status']) ?></td>
                            <td class="px-4 py-3 text-gray-400"><?= $quote['item_count'] ?></td>
                            <td class="px-4 py-3 text-right text-emerald-400 font-medium"><?= formatMoney($quote['monthly_total']) ?></td>
                            <td class="px-4 py-3 text-right">
                                <a href="?id=<?= $quote['id'] ?>" class="text-blue-400 hover:text-blue-300">View</a>
                            </td>
                        </tr>
                        <?php endforeach; ?>
                        <?php endif; ?>
                    </tbody>
                </table>
            </div>
        </div>
    </main>
</body>
</html>