newfile

using System.Collections.Generic;
using System.Linq;

namespace CourseApplication.Services
{
    public class CourseSearchService
    {
        private readonly ApplicationDbContext _context;

        public CourseSearchService(ApplicationDbContext context)
        {
            _context = context;
        }

        /// <summary>
        /// Searches for courses by keyword.
        /// </summary>
        /// <param name="keyword">The search keyword (in title or description).</param>
        /// <returns>List of matching courses.</returns>
        public List<Course> SearchCourses(string keyword)
        {
            if (string.IsNullOrEmpty(keyword))
                return new List<Course>();

            return _context.Courses
                .Where(c => c.Title.Contains(keyword) || c.Description.Contains(keyword))
                .ToList();
        }
    }
}