初始化

FutureMailAPI/Models/OAuthModels.cs

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+namespace FutureMailAPI.Models
+{
+    public class OAuthClient
+    {
+        public int Id { get; set; }
+        public string ClientId { get; set; } = string.Empty;
+        public string ClientSecret { get; set; } = string.Empty;
+        public string Name { get; set; } = string.Empty;
+        public string RedirectUris { get; set; } = string.Empty; // JSON array
+        public string Scopes { get; set; } = string.Empty; // JSON array
+        public bool IsActive { get; set; } = true;
+        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+        public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+    }
+    
+    public class OAuthAuthorizationCode
+    {
+        public int Id { get; set; }
+        public string Code { get; set; } = string.Empty;
+        public int ClientId { get; set; }
+        public int UserId { get; set; }
+        public string RedirectUri { get; set; } = string.Empty;
+        public string Scopes { get; set; } = string.Empty;
+        public bool IsUsed { get; set; } = false;
+        public DateTime ExpiresAt { get; set; }
+        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+        
+        // Navigation properties
+        public virtual OAuthClient Client { get; set; } = null!;
+        public virtual User User { get; set; } = null!;
+    }
+    
+    public class OAuthRefreshToken
+    {
+        public int Id { get; set; }
+        public string Token { get; set; } = string.Empty;
+        public int ClientId { get; set; }
+        public int UserId { get; set; }
+        public bool IsUsed { get; set; } = false;
+        public DateTime ExpiresAt { get; set; }
+        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+        
+        // Navigation properties
+        public virtual OAuthClient Client { get; set; } = null!;
+        public virtual User User { get; set; } = null!;
+    }
+    
+    public class OAuthAccessToken
+    {
+        public int Id { get; set; }
+        public string Token { get; set; } = string.Empty;
+        public int ClientId { get; set; }
+        public int UserId { get; set; }
+        public string Scopes { get; set; } = string.Empty;
+        public bool IsRevoked { get; set; } = false;
+        public DateTime ExpiresAt { get; set; }
+        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+        
+        // Navigation properties
+        public virtual OAuthClient Client { get; set; } = null!;
+        public virtual User User { get; set; } = null!;
+    }
+}

FutureMailAPI/Models/ReceivedMail.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace FutureMailAPI.Models
+{
+    public class ReceivedMail
+    {
+        [Key]
+        public int Id { get; set; }
+        
+        [Required]
+        public int SentMailId { get; set; }
+        
+        [Required]
+        public int RecipientId { get; set; }
+        
+        // 接收时间
+        public DateTime ReceivedAt { get; set; } = DateTime.UtcNow;
+        
+        // 是否已读
+        public bool IsRead { get; set; } = false;
+        
+        // 阅读时间
+        public DateTime? ReadAt { get; set; }
+        
+        // 是否已回复
+        public bool IsReplied { get; set; } = false;
+        
+        // 回复邮件ID
+        public int? ReplyMailId { get; set; }
+        
+        // 导航属性
+        [ForeignKey("SentMailId")]
+        public virtual SentMail SentMail { get; set; } = null!;
+        
+        [ForeignKey("RecipientId")]
+        public virtual User Recipient { get; set; } = null!;
+    }
+}

FutureMailAPI/Models/SentMail.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace FutureMailAPI.Models
+{
+    public class SentMail
+    {
+        [Key]
+        public int Id { get; set; }
+        
+        [Required]
+        [MaxLength(200)]
+        public string Title { get; set; } = string.Empty;
+        
+        [Required]
+        public string Content { get; set; } = string.Empty;
+        
+        [Required]
+        public int SenderId { get; set; }
+        
+        // 收件人类型: 0-自己, 1-指定用户, 2-公开时间胶囊
+        [Required]
+        public int RecipientType { get; set; }
+        
+        // 如果是指定用户，存储用户ID
+        public int? RecipientId { get; set; }
+        
+        // 发送时间
+        public DateTime SentAt { get; set; } = DateTime.UtcNow;
+        
+        // 投递时间
+        [Required]
+        public DateTime DeliveryTime { get; set; }
+        
+        // 邮件状态: 0-草稿, 1-已发送(待投递), 2-投递中, 3-已送达
+        [Required]
+        public int Status { get; set; } = 0;
+        
+        // 触发条件类型: 0-时间, 1-地点, 2-事件
+        [Required]
+        public int TriggerType { get; set; } = 0;
+        
+        // 触发条件详情(JSON格式存储)
+        public string? TriggerDetails { get; set; }
+        
+        // 附件路径(JSON数组格式)
+        public string? Attachments { get; set; }
+        
+        // 是否加密
+        public bool IsEncrypted { get; set; } = false;
+        
+        // 加密密钥(如果使用端到端加密)
+        public string? EncryptionKey { get; set; }
+        
+        // 邮件主题/胶囊皮肤
+        [MaxLength(50)]
+        public string? Theme { get; set; }
+        
+        // 导航属性
+        [ForeignKey("SenderId")]
+        public virtual User Sender { get; set; } = null!;
+        
+        public virtual User? Recipient { get; set; }
+    }
+}

FutureMailAPI/Models/TimeCapsule.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace FutureMailAPI.Models
+{
+    public class TimeCapsule
+    {
+        [Key]
+        public int Id { get; set; }
+        
+        [Required]
+        public int UserId { get; set; }
+        
+        [Required]
+        public int SentMailId { get; set; }
+        
+        // 胶囊位置信息(X, Y, Z坐标)
+        public double PositionX { get; set; }
+        public double PositionY { get; set; }
+        public double PositionZ { get; set; }
+        
+        // 胶囊大小
+        public double Size { get; set; } = 1.0;
+        
+        // 胶囊颜色
+        [MaxLength(20)]
+        public string? Color { get; set; }
+        
+        // 胶囊透明度
+        public double Opacity { get; set; } = 1.0;
+        
+        // 胶囊旋转角度
+        public double Rotation { get; set; } = 0;
+        
+        // 胶囊状态: 0-未激活, 1-漂浮中, 2-即将到达, 3-已开启
+        [Required]
+        public int Status { get; set; } = 0;
+        
+        // 胶囊类型: 0-普通, 1-特殊, 2-限时
+        [Required]
+        public int Type { get; set; } = 0;
+        
+        // 创建时间
+        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+        
+        // 导航属性
+        [ForeignKey("UserId")]
+        public virtual User User { get; set; } = null!;
+        
+        [ForeignKey("SentMailId")]
+        public virtual SentMail SentMail { get; set; } = null!;
+    }
+}

FutureMailAPI/Models/User.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace FutureMailAPI.Models
+{
+    public class User
+    {
+        [Key]
+        public int Id { get; set; }
+        
+        [Required]
+        [MaxLength(100)]
+        public string Username { get; set; } = string.Empty;
+        
+        [Required]
+        [MaxLength(255)]
+        public string Email { get; set; } = string.Empty;
+        
+        [Required]
+        [MaxLength(255)]
+        public string PasswordHash { get; set; } = string.Empty;
+        
+        [Required]
+        [MaxLength(255)]
+        public string Salt { get; set; } = string.Empty;
+        
+        [MaxLength(100)]
+        public string? Nickname { get; set; }
+        
+        [MaxLength(500)]
+        public string? Avatar { get; set; }
+        
+        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+        
+        public DateTime? LastLoginAt { get; set; }
+        
+        public bool IsActive { get; set; } = true;
+        
+        [MaxLength(20)]
+        public string? PreferredScene { get; set; } = "SPACE";
+        
+        [MaxLength(50)]
+        public string? PreferredBackground { get; set; } = "default";
+        
+        // 导航属性
+        public virtual ICollection<SentMail> SentMails { get; set; } = new List<SentMail>();
+        public virtual ICollection<ReceivedMail> ReceivedMails { get; set; } = new List<ReceivedMail>();
+        public virtual ICollection<TimeCapsule> TimeCapsules { get; set; } = new List<TimeCapsule>();
+    }
+}