using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Security.Cryptography;
using System.Text;

namespace Fitness_core_BE.Models
{
    public class AccessDevice
    {
        [Key]
        public Guid DeviceId { get; set; }
        public string DeviceName { get; set; }

        // DEPRECATED: connection details now live on the on-prem agent (Fitness_core_BE.Models.Agent),
        // not in the cloud. Kept nullable so existing rows survive; no new code should read/write these.
        [Obsolete("Device connection details now live on the on-prem agent, not in the cloud.")]
        public string? PublicIp { get; set; }
        [Obsolete("Device connection details now live on the on-prem agent, not in the cloud.")]
        public string? Port { get; set; }
        [Obsolete("Device connection details now live on the on-prem agent, not in the cloud.")]
        public string? UserName { get; set; }
        [Obsolete("Device connection details now live on the on-prem agent, not in the cloud.")]
        public string? Password { get; set; }

        public Guid FKClientId { get; set; }
        [ForeignKey("FKClientId")]
        public Client Client { get; set; }

        // The agent that currently owns this LAN device. Commands are dispatched only
        // to this agent, which prevents a second agent for the same gym receiving them.
        public Guid? FKAgentId { get; set; }
        [ForeignKey(nameof(FKAgentId))]
        public Agent? Agent { get; set; }

        // Stable serial/device identifier reported by ISAPI. Used to re-claim the same
        // cloud row after reinstalling the desktop agent instead of creating duplicates.
        [MaxLength(160)]
        public string? HardwareId { get; set; }

        // Which Place (physical zone) this terminal sits in. Null = unscoped: reachable by
        // every plan regardless of that plan's Places (keeps pre-existing devices and
        // plans without any place restriction working unchanged). Unique when set --
        // exactly one device per place for now (see Models/Place.cs).
        public Guid? FKPlaceId { get; set; }
        [ForeignKey(nameof(FKPlaceId))]
        public Place? Place { get; set; }

        public bool IsActive { get; set; } = true;
        public DateTime? LastSeenAt { get; set; }
        // Explicit reachability reported by the on-prem agent. LastSeenAt remains
        // the last successful terminal operation; health reports are tracked
        // separately so status does not depend on browser polling.
        public bool IsReachable { get; set; }
        public DateTime? LastHealthReportedAt { get; set; }
        public DateTime CreatedAt { get; set; }= DateTime.UtcNow;

        [Obsolete("Device connection details now live on the on-prem agent, not in the cloud.")]
        public void SetPassword(string plainText)
        => Password = EncryptionHelper.Encrypt(plainText);

        [Obsolete("Device connection details now live on the on-prem agent, not in the cloud.")]
        public string GetPlainTextPassword()
            => EncryptionHelper.Decrypt(Password!);
    }
}