<?php
require_once '../include/init.php';
require_once '../include/auth.php';

// --- Security Check: Only Admin can access this API ---
if (!isAdmin()) {
    http_response_code(403); // Forbidden
    echo json_encode(['error' => 'Permission denied.']);
    exit;
}

header('Content-Type: application/json');
$method = $_SERVER['REQUEST_METHOD'];
$response = [];

try {
    if ($method === 'GET') {
        // Get all hidden tab settings
        $stmt = $pdo->query("SELECT user_id, tab_id FROM user_tab_visibility");
        $response = $stmt->fetchAll();

    } elseif ($method === 'POST') {
        $data = json_decode(file_get_contents('php://input'), true);
        $tab_id = $data['tab_id'] ?? null;
        $user_id = $data['user_id'] ?? null;
        $is_visible = $data['is_visible'] ?? true;

        if ($tab_id && $user_id) {
            if ($is_visible) {
                // If it should be visible, DELETE the entry from the hide table
                $stmt = $pdo->prepare("DELETE FROM user_tab_visibility WHERE user_id = ? AND tab_id = ?");
                $stmt->execute([$user_id, $tab_id]);
            } else {
                // If it should be hidden, INSERT an entry (ignore if it already exists)
                $stmt = $pdo->prepare("INSERT OR IGNORE INTO user_tab_visibility (user_id, tab_id) VALUES (?, ?)");
                $stmt->execute([$user_id, $tab_id]);
            }
            $response = ['success' => true];
        } else {
            http_response_code(400); // Bad Request
            $response = ['error' => 'Tab ID and User ID are required.'];
        }
    } else {
        http_response_code(405); // Method Not Allowed
        $response = ['error' => 'Method not allowed'];
    }
} catch (PDOException $e) {
    http_response_code(500); // Internal Server Error
    $response = ['error' => 'Database error: ' . $e->getMessage()];
}

echo json_encode($response);