using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using Microsoft.EntityFrameworkCore;

namespace IM_API.Models;

[Table("messages")]
[Index("Sender", Name = "Sender")]
[MySqlCharSet("utf8mb4")]
[MySqlCollation("utf8mb4_general_ci")]
public partial class Message
{
    [Key]
    [Column("ID", TypeName = "int(11)")]
    public int Id { get; set; }

    /// <summary>
    /// 聊天类型
    /// （0：私聊,1：群聊）
    /// </summary>
    [Column(TypeName = "tinyint(4)")]
    public sbyte ChatType { get; set; }

    /// <summary>
    /// 消息类型
    /// (0:文本,1：图片,2：语音,3：视频,4：文件，5：语音聊天,6：视频聊天)
    /// </summary>
    [Column(TypeName = "tinyint(4)")]
    public sbyte MsgType { get; set; }

    /// <summary>
    /// 消息内容	
    /// </summary>
    [Column(TypeName = "text")]
    public string Content { get; set; } = null!;

    /// <summary>
    /// 发送者	
    /// </summary>
    [Column(TypeName = "int(11)")]
    public int Sender { get; set; }

    /// <summary>
    /// 接收者（私聊为用户ID，群聊为群聊ID）	
    /// </summary>
    [Column(TypeName = "int(11)")]
    public int Recipient { get; set; }

    /// <summary>
    /// 消息状态(0:已发送,1:已撤回)	
    /// </summary>
    [Column(TypeName = "tinyint(4)")]
    public sbyte State { get; set; }

    /// <summary>
    /// 发送时间	
    /// </summary>
    [Column(TypeName = "datetime")]
    public DateTime Created { get; set; }

    [InverseProperty("LastMessage")]
    public virtual ICollection<Conversation> Conversations { get; set; } = new List<Conversation>();

    [InverseProperty("MessageldNavigation")]
    public virtual ICollection<File> Files { get; set; } = new List<File>();

    [ForeignKey("Sender")]
    [InverseProperty("Messages")]
    public virtual User SenderNavigation { get; set; } = null!;
}