初始化

FutureMailAPI/DTOs/MailDTOs.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace FutureMailAPI.DTOs
+{
+    public class SentMailCreateDto
+    {
+        [Required(ErrorMessage = "标题是必填项")]
+        [StringLength(200, ErrorMessage = "标题长度不能超过200个字符")]
+        public string Title { get; set; } = string.Empty;
+        
+        [Required(ErrorMessage = "内容是必填项")]
+        public string Content { get; set; } = string.Empty;
+        
+        // 收件人类型: 0-自己, 1-指定用户, 2-公开时间胶囊
+        [Required(ErrorMessage = "收件人类型是必填项")]
+        [Range(0, 2, ErrorMessage = "收件人类型必须是0、1或2")]
+        public int RecipientType { get; set; }
+        
+        // 如果是指定用户，提供用户邮箱
+        public string? RecipientEmail { get; set; }
+        
+        [Required(ErrorMessage = "投递时间是必填项")]
+        public DateTime DeliveryTime { get; set; }
+        
+        // 触发条件类型: 0-时间, 1-地点, 2-事件
+        [Required(ErrorMessage = "触发条件类型是必填项")]
+        [Range(0, 2, ErrorMessage = "触发条件类型必须是0、1或2")]
+        public int TriggerType { get; set; } = 0;
+        
+        // 触发条件详情(JSON格式)
+        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
+        [StringLength(50, ErrorMessage = "主题长度不能超过50个字符")]
+        public string? Theme { get; set; }
+    }
+    
+    public class SentMailUpdateDto
+    {
+        [StringLength(200, ErrorMessage = "标题长度不能超过200个字符")]
+        public string? Title { get; set; }
+        
+        public string? Content { get; set; }
+        
+        public DateTime? DeliveryTime { get; set; }
+        
+        public string? TriggerDetails { get; set; }
+        
+        public string? Attachments { get; set; }
+        
+        public string? Theme { get; set; }
+    }
+    
+    public class SentMailResponseDto
+    {
+        public int Id { get; set; }
+        public string Title { get; set; } = string.Empty;
+        public string Content { get; set; } = string.Empty;
+        public int SenderId { get; set; }
+        public string SenderUsername { get; set; } = string.Empty;
+        public int RecipientType { get; set; }
+        public int? RecipientId { get; set; }
+        public string? RecipientUsername { get; set; }
+        public DateTime SentAt { get; set; }
+        public DateTime DeliveryTime { get; set; }
+        public int Status { get; set; }
+        public int TriggerType { get; set; }
+        public string? TriggerDetails { get; set; }
+        public string? Attachments { get; set; }
+        public bool IsEncrypted { get; set; }
+        public string? Theme { get; set; }
+        
+        // 计算属性
+        public string StatusText { get; set; } = string.Empty;
+        public string RecipientTypeText { get; set; } = string.Empty;
+        public string TriggerTypeText { get; set; } = string.Empty;
+        public int DaysUntilDelivery { get; set; }
+    }
+    
+    public class ReceivedMailResponseDto
+    {
+        public int Id { get; set; }
+        public int SentMailId { get; set; }
+        public string Title { get; set; } = string.Empty;
+        public string Content { get; set; } = string.Empty;
+        public string SenderUsername { get; set; } = string.Empty;
+        public DateTime SentAt { get; set; }
+        public DateTime ReceivedAt { get; set; }
+        public bool IsRead { get; set; }
+        public DateTime? ReadAt { get; set; }
+        public bool IsReplied { get; set; }
+        public int? ReplyMailId { get; set; }
+        public string? Theme { get; set; }
+    }
+    
+    public class MailListQueryDto
+    {
+        public int PageIndex { get; set; } = 1;
+        public int PageSize { get; set; } = 10;
+        public int? Status { get; set; }
+        public int? RecipientType { get; set; }
+        public string? Keyword { get; set; }
+        public DateTime? StartDate { get; set; }
+        public DateTime? EndDate { get; set; }
+    }
+}