<?php
session_start();
require_once __DIR__ . '/db/config.php';
require_once __DIR__ . '/includes/audit.php';

header('Content-Type: application/json');

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    echo json_encode(['success' => false, 'message' => 'Invalid request method.']);
    exit;
}

// If user is not logged in, return error
if (!isset($_SESSION['user_id'])) {
    echo json_encode(['success' => false, 'message' => 'User not logged in.']);
    exit;
}

$noteId = $_POST['note_id'] ?? null;

if ($noteId) {
    try {
        $pdo = db();

        // Verify that the note belongs to a client of the logged-in user
        $stmt = $pdo->prepare(
            "SELECT n.note_id FROM notes n " .
            "JOIN clients c ON n.client_id = c.client_id " .
            "WHERE n.note_id = ? AND c.user_id = ?"
        );
        $stmt->execute([$noteId, $_SESSION['user_id']]);
        $note = $stmt->fetch(PDO::FETCH_ASSOC);

        if ($note) {
            log_audit_event('note_delete', $_SESSION['user_id'], 'note', $noteId);

            // Now, delete the note
            $deleteStmt = $pdo->prepare("DELETE FROM notes WHERE note_id = ?");
            $deleteStmt->execute([$noteId]);

            echo json_encode(['success' => true]);
            exit;
        } else {
            echo json_encode(['success' => false, 'message' => 'Note not found or you do not have permission to delete it.']);
            exit;
        }
    } catch (PDOException $e) {
        // Optional: Log error
        error_log("Error deleting note: " . $e->getMessage());
        echo json_encode(['success' => false, 'message' => 'Database error.']);
        exit;
    }
} else {
    echo json_encode(['success' => false, 'message' => 'Note ID is required.']);
    exit;
}
?>