using System;
using System.Text.RegularExpressions;

namespace HanvonF710XAttendanceService
{
    internal sealed class DbToDeviceDuplicateFaceEntry
    {
        public DbToDeviceDuplicateFaceEntry(string employeeId, string existingDeviceId, string targetDevice)
        {
            EmployeeId = employeeId ?? "";
            ExistingDeviceId = existingDeviceId ?? "";
            TargetDevice = targetDevice ?? "";
        }

        public string EmployeeId { get; }
        public string ExistingDeviceId { get; }
        public string TargetDevice { get; }
    }

    internal static class DbToDeviceFaceErrors
    {
        private static readonly Regex DuplicateFaceRegex = new Regex(
            @"face\s+is\s+double\s*,\s*id\s*=\s*(\d+)",
            RegexOptions.IgnoreCase | RegexOptions.CultureInvariant);

        public static bool TryParseDuplicateFace(string errorMessage, out string existingDeviceId)
        {
            existingDeviceId = null;
            if (string.IsNullOrWhiteSpace(errorMessage))
            {
                return false;
            }

            Match match = DuplicateFaceRegex.Match(errorMessage.Trim());
            if (!match.Success || match.Groups.Count < 2)
            {
                return false;
            }

            existingDeviceId = match.Groups[1].Value?.Trim();
            return !string.IsNullOrWhiteSpace(existingDeviceId);
        }
    }
}