DatabaseSnapshots/Models/DataModels.cs

using System.Text.Json.Serialization;

namespace DatabaseSnapshotsService.Models
{
    public class SnapshotInfo
    {
        [JsonPropertyName("id")]
        public int Id { get; set; }
        
        [JsonPropertyName("type")]
        public string Type { get; set; } = string.Empty;
        
        [JsonPropertyName("timestamp")]
        public long Timestamp { get; set; }
        
        [JsonPropertyName("dataSize")]
        public long DataSize { get; set; }
        
        [JsonPropertyName("status")]
        public string Status { get; set; } = string.Empty;
        
        [JsonPropertyName("description")]
        public string? Description { get; set; }
        
        [JsonPropertyName("userId")]
        public int? UserId { get; set; }
        
        [JsonPropertyName("createdAt")]
        public DateTime CreatedAt { get; set; }
        
        [JsonPropertyName("filePath")]
        public string FilePath { get; set; } = string.Empty;
        
        [JsonPropertyName("checksum")]
        public string Checksum { get; set; } = string.Empty;
        
        // Binlog fields for incremental snapshots
        [JsonPropertyName("binlogFile")]
        public string? BinlogFile { get; set; }
        
        [JsonPropertyName("binlogPosition")]
        public long? BinlogPosition { get; set; }
        
        [JsonPropertyName("parentSnapshotId")]
        public int? ParentSnapshotId { get; set; }
        
        [JsonPropertyName("incrementalBinlogStartFile")]
        public string? IncrementalBinlogStartFile { get; set; }
        
        [JsonPropertyName("incrementalBinlogStartPosition")]
        public long? IncrementalBinlogStartPosition { get; set; }
        
        [JsonPropertyName("incrementalBinlogEndFile")]
        public string? IncrementalBinlogEndFile { get; set; }
        
        [JsonPropertyName("incrementalBinlogEndPosition")]
        public long? IncrementalBinlogEndPosition { get; set; }
    }

    public class DatabaseEvent
    {
        [JsonPropertyName("id")]
        public long Id { get; set; }
        
        [JsonPropertyName("timestamp")]
        public long Timestamp { get; set; }
        
        [JsonPropertyName("type")]
        public string Type { get; set; } = string.Empty;
        
        [JsonPropertyName("table")]
        public string Table { get; set; } = string.Empty;
        
        [JsonPropertyName("operation")]
        public string Operation { get; set; } = string.Empty;
        
        [JsonPropertyName("data")]
        public string Data { get; set; } = string.Empty;
        
        [JsonPropertyName("binlogPosition")]
        public long BinlogPosition { get; set; }
        
        [JsonPropertyName("serverId")]
        public int ServerId { get; set; }
        
        [JsonPropertyName("checksum")]
        public string Checksum { get; set; } = string.Empty;
    }

    public class RecoveryPoint
    {
        [JsonPropertyName("id")]
        public int Id { get; set; }
        
        [JsonPropertyName("name")]
        public string Name { get; set; } = string.Empty;
        
        [JsonPropertyName("timestamp")]
        public long Timestamp { get; set; }
        
        [JsonPropertyName("description")]
        public string? Description { get; set; }
        
        [JsonPropertyName("eventCount")]
        public long EventCount { get; set; }
        
        [JsonPropertyName("createdAt")]
        public DateTime CreatedAt { get; set; }
        
        [JsonPropertyName("lastEventId")]
        public long LastEventId { get; set; }
    }

    public class ServiceStatus
    {
        [JsonPropertyName("status")]
        public string Status { get; set; } = "Unknown";
        
        [JsonPropertyName("databaseConnected")]
        public bool DatabaseConnected { get; set; }
        
        [JsonPropertyName("binlogReaderStatus")]
        public string BinlogReaderStatus { get; set; } = "Unknown";
        
        [JsonPropertyName("lastEventProcessed")]
        public long LastEventProcessed { get; set; }
        
        [JsonPropertyName("totalEvents")]
        public long TotalEvents { get; set; }
        
        [JsonPropertyName("activeSnapshots")]
        public int ActiveSnapshots { get; set; }
        
        [JsonPropertyName("uptime")]
        public TimeSpan Uptime { get; set; }
        
        [JsonPropertyName("lastSnapshot")]
        public DateTime? LastSnapshot { get; set; }
    }

    public class HealthStatus
    {
        [JsonPropertyName("isHealthy")]
        public bool IsHealthy { get; set; }
        
        [JsonPropertyName("errorMessage")]
        public string? ErrorMessage { get; set; }
        
        [JsonPropertyName("checks")]
        public Dictionary<string, bool> Checks { get; set; } = new();
        
        [JsonPropertyName("timestamp")]
        public DateTime Timestamp { get; set; } = DateTime.UtcNow;
    }

    public class RestorePreview
    {
        [JsonPropertyName("targetTimestamp")]
        public long TargetTimestamp { get; set; }
        
        [JsonPropertyName("eventCount")]
        public long EventCount { get; set; }
        
        [JsonPropertyName("affectedTables")]
        public List<string> AffectedTables { get; set; } = new();
        
        [JsonPropertyName("estimatedDuration")]
        public TimeSpan EstimatedDuration { get; set; }
        
        [JsonPropertyName("snapshotId")]
        public int? SnapshotId { get; set; }
        
        [JsonPropertyName("warnings")]
        public List<string> Warnings { get; set; } = new();
    }

    public class SnapshotMetadata
    {
        [JsonPropertyName("version")]
        public string Version { get; set; } = "1.0";
        
        [JsonPropertyName("createdAt")]
        public DateTime CreatedAt { get; set; }
        
        [JsonPropertyName("databaseVersion")]
        public string DatabaseVersion { get; set; } = string.Empty;
        
        [JsonPropertyName("tables")]
        public List<TableInfo> Tables { get; set; } = new();
        
        [JsonPropertyName("checksum")]
        public string Checksum { get; set; } = string.Empty;
        
        [JsonPropertyName("compression")]
        public bool Compression { get; set; }
        
        [JsonPropertyName("encryption")]
        public bool Encryption { get; set; }
    }

    public class TableInfo
    {
        [JsonPropertyName("name")]
        public string Name { get; set; } = string.Empty;
        
        [JsonPropertyName("rowCount")]
        public long RowCount { get; set; }
        
        [JsonPropertyName("dataSize")]
        public long DataSize { get; set; }
        
        [JsonPropertyName("indexSize")]
        public long IndexSize { get; set; }
        
        [JsonPropertyName("checksum")]
        public string Checksum { get; set; } = string.Empty;
    }

    public enum SnapshotType
    {
        Full,
        Trading,
        User,
        Incremental
    }

    public enum EventOperation
    {
        Insert,
        Update,
        Delete,
        Truncate
    }

    public enum SnapshotStatus
    {
        Creating,
        Completed,
        Failed,
        Corrupted
    }
}