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

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

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

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $clientId = $_POST['client_id'] ?? null;
    $note = $_POST['note'] ?? null;
    $userId = $_SESSION['user_id'];

    if ($clientId && $note) {
        try {
            $pdo = db();
            $stmt = $pdo->prepare("INSERT INTO notes (client_id, user_id, note) VALUES (?, ?, ?)");
            $stmt->execute([$clientId, $userId, $note]);
            $newNoteId = $pdo->lastInsertId();
            log_audit_event('note_create', $userId, 'note', $newNoteId);

            // Fetch the new note to return to the client
            $stmt = $pdo->prepare(
                "SELECT n.*, u.display_name FROM notes n " .
                "JOIN users u ON n.user_id = u.user_id " .
                "WHERE n.note_id = ?"
            );
            $stmt->execute([$newNoteId]);
            $newNote = $stmt->fetch(PDO::FETCH_ASSOC);

            echo json_encode(['success' => true, 'note' => $newNote]);
            exit;
        } catch (PDOException $e) {
            // Optional: Log error
            echo json_encode(['success' => false, 'message' => 'Database error.']);
            exit;
        }
    } else {
        echo json_encode(['success' => false, 'message' => 'Client ID and note are required.']);
        exit;
    }
} else {
    echo json_encode(['success' => false, 'message' => 'Invalid request method.']);
    exit;
}
?>