namespace LetterBoxdUnwatchedGenerator
{
    public class LocalMovie : IMovie
    {
        public string Title { get; }
        public int Year { get; }
        public string? Resolution { get; }
        public string Directory { get; }

        public LocalMovie(string title, int year, string? resolution, string directory)
        {
            Title = title;
            Year = year;
            Resolution = resolution;
            Directory = directory;
        }
        public static LocalMovie FromDirectory(string directoryName, string directoryFullName)
        {
            string title;
            int? year;
            string? resolution;

            var yearIndex = directoryName.LastIndexOf('(');
            var resolutionIndex = directoryName.LastIndexOf('[');
            if (yearIndex == -1)
            {
                year = null;
                if (resolutionIndex == -1)
                {
                    resolution = null;
                    title = directoryName;
                }
                else
                {
                    resolution = directoryName.Substring(resolutionIndex + 1, directoryName.LastIndexOf(']') - resolutionIndex - 1);
                    title = directoryName[..(resolutionIndex - 1)].Trim();
                }
            }
            else
            {
                if (int.TryParse(directoryName.AsSpan(yearIndex + 1, directoryName.LastIndexOf(')') - yearIndex - 1), out int yearConverted)) year = yearConverted;
                else year = null;
                if (resolutionIndex == -1)
                {
                    resolution = null;
                    title = directoryName[..(yearIndex - 1)].Trim();
                }
                else
                {
                    resolution = directoryName.Substring(resolutionIndex + 1, directoryName.LastIndexOf(']') - resolutionIndex - 1);
                    title = directoryName[..(yearIndex - 1)].Trim();
                }
            }

            return new LocalMovie(title, year ?? 0, resolution, directoryFullName);
        }
    }
}