初始化

FutureMailAPI/DTOs/PersonalSpaceDTOs.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace FutureMailAPI.DTOs
+{
+    public class TimelineQueryDto
+    {
+        public DateTime? StartDate { get; set; }
+        public DateTime? EndDate { get; set; }
+        public TimelineType Type { get; set; } = TimelineType.ALL;
+    }
+    
+    public class TimelineResponseDto
+    {
+        public List<TimelineDateDto> Timeline { get; set; } = new();
+    }
+    
+    public class TimelineDateDto
+    {
+        public string Date { get; set; } = string.Empty; // YYYY-MM-DD格式
+        public List<TimelineEventDto> Events { get; set; } = new();
+    }
+    
+    public class TimelineEventDto
+    {
+        public TimelineEventType Type { get; set; }
+        public int MailId { get; set; }
+        public string Title { get; set; } = string.Empty;
+        public string Time { get; set; } = string.Empty; // HH:mm格式
+        public UserInfoDto WithUser { get; set; } = new();
+        public string Emotion { get; set; } = string.Empty;
+    }
+    
+    public class StatisticsResponseDto
+    {
+        public int TotalSent { get; set; }
+        public int TotalReceived { get; set; }
+        public int TimeTravelDuration { get; set; } // 总时间旅行时长（天）
+        public string MostFrequentRecipient { get; set; } = string.Empty;
+        public int MostCommonYear { get; set; }
+        public List<KeywordCloudDto> KeywordCloud { get; set; } = new();
+        public List<MonthlyStatsDto> MonthlyStats { get; set; } = new();
+    }
+    
+    public class KeywordCloudDto
+    {
+        public string Word { get; set; } = string.Empty;
+        public int Count { get; set; }
+        public int Size { get; set; } // 用于显示的大小
+    }
+    
+    public class MonthlyStatsDto
+    {
+        public string Month { get; set; } = string.Empty; // YYYY-MM格式
+        public int Sent { get; set; }
+        public int Received { get; set; }
+    }
+    
+    public class UserInfoDto
+    {
+        public int UserId { get; set; }
+        public string Username { get; set; } = string.Empty;
+        public string? Avatar { get; set; }
+    }
+    
+    public class SubscriptionResponseDto
+    {
+        public SubscriptionPlan Plan { get; set; }
+        public int RemainingMails { get; set; }
+        public long MaxAttachmentSize { get; set; } // 字节
+        public SubscriptionFeaturesDto Features { get; set; } = new();
+        public DateTime? ExpireDate { get; set; }
+    }
+    
+    public class SubscriptionFeaturesDto
+    {
+        public bool AdvancedTriggers { get; set; }
+        public bool CustomCapsules { get; set; }
+        public bool AIAssistant { get; set; }
+        public bool UnlimitedStorage { get; set; }
+        public bool PriorityDelivery { get; set; }
+    }
+    
+    public class UserProfileResponseDto
+    {
+        public int Id { get; set; }
+        public string Username { get; set; } = string.Empty;
+        public string Email { get; set; } = string.Empty;
+        public string? Nickname { get; set; }
+        public string? Avatar { get; set; }
+        public DateTime CreatedAt { get; set; }
+        public DateTime? LastLoginAt { get; set; }
+        public SubscriptionResponseDto Subscription { get; set; } = new();
+    }
+    
+    // 枚举定义
+    public enum TimelineType
+    {
+        ALL = 0,
+        SENT = 1,
+        RECEIVED = 2
+    }
+    
+    public enum TimelineEventType
+    {
+        SENT = 0,
+        RECEIVED = 1
+    }
+    
+    public enum SubscriptionPlan
+    {
+        FREE = 0,
+        PREMIUM = 1,
+        PRO = 2
+    }
+}