added cipher history API for data syncing with client databases

src/Api/Controllers/CiphersController.cs

@@ -50,6 +50,14 @@ namespace Bit.Api.Controllers
             return new ListResponseModel<CipherResponseModel>(responses);
         }
 
+        [HttpGet("history")]
+        public async Task<CipherHistoryResponseModel> Get(DateTime since)
+        {
+            var history = await _cipherRepository.GetManySinceRevisionDateAndUserIdWithDeleteHistoryAsync(
+                since, new Guid(_userManager.GetUserId(User)));
+            return new CipherHistoryResponseModel(history.Item1, history.Item2);
+        }
+
         [HttpPost("import")]
         public async Task PostImport([FromBody]ImportRequestModel model)
         {

src/Api/Models/Response/CipherHistoryResponseModel.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Bit.Core.Domains;
+
+namespace Bit.Api.Models
+{
+    public class CipherHistoryResponseModel : ResponseModel
+    {
+        public CipherHistoryResponseModel(IEnumerable<Cipher> revisedCiphers, IEnumerable<Guid> deletedIds)
+            : base("cipherHistory")
+        {
+            if(revisedCiphers == null)
+            {
+                throw new ArgumentNullException(nameof(revisedCiphers));
+            }
+
+            if(deletedIds == null)
+            {
+                throw new ArgumentNullException(nameof(deletedIds));
+            }
+
+            Revised = revisedCiphers.Select(c => new CipherResponseModel(c));
+            Deleted = deletedIds.Select(id => id.ToString());
+        }
+
+        public IEnumerable<CipherResponseModel> Revised { get; set; }
+        public IEnumerable<string> Deleted { get; set; }
+    }
+}

src/Core/Repositories/ICipherRepository.cs

@@ -10,6 +10,8 @@ namespace Bit.Core.Repositories
         Task<Cipher> GetByIdAsync(Guid id, Guid userId);
         Task<ICollection<Cipher>> GetManyByUserIdAsync(Guid userId);
         Task<ICollection<Cipher>> GetManyByTypeAndUserIdAsync(Enums.CipherType type, Guid userId);
+        Task<Tuple<ICollection<Cipher>, ICollection<Guid>>>
+            GetManySinceRevisionDateAndUserIdWithDeleteHistoryAsync(DateTime sinceRevisionDate, Guid userId);
         Task UpdateUserEmailPasswordAndCiphersAsync(User user, IEnumerable<Cipher> ciphers);
         Task CreateAsync(IEnumerable<Cipher> ciphers);
     }

src/Core/Repositories/SqlServer/CipherRepository.cs

@@ -57,6 +57,27 @@ namespace Bit.Core.Repositories.SqlServer
             }
         }
 
+        public async Task<Tuple<ICollection<Cipher>, ICollection<Guid>>> 
+            GetManySinceRevisionDateAndUserIdWithDeleteHistoryAsync(DateTime sinceRevisionDate, Guid userId)
+        {
+            using(var connection = new SqlConnection(ConnectionString))
+            {
+                var results = await connection.QueryMultipleAsync(
+                    $"[{Schema}].[{Table}_ReadByRevisionDateUserWithDeleteHistory]",
+                    new
+                    {
+                        SinceRevisionDate = sinceRevisionDate,
+                        UserId = userId
+                    },
+                    commandType: CommandType.StoredProcedure);
+
+                var ciphers = await results.ReadAsync<Cipher>();
+                var deletes = await results.ReadAsync<Guid>();
+
+                return new Tuple<ICollection<Cipher>, ICollection<Guid>>(ciphers.ToList(), deletes.ToList());
+            }
+        }
+
         public Task UpdateUserEmailPasswordAndCiphersAsync(User user, IEnumerable<Cipher> ciphers)
         {
             if(ciphers.Count() == 0)

src/Sql/Sql.sqlproj

@@ -84,5 +84,6 @@
     <Build Include="dbo\Stored Procedures\User_Update.sql" />
     <Build Include="dbo\Stored Procedures\Cipher_ReadByUserId.sql" />
     <Build Include="dbo\Stored Procedures\User_UpdateEmailPassword.sql" />
+    <Build Include="dbo\Stored Procedures\Cipher_ReadByRevisionDateWithDeleteHistory.sql" />
   </ItemGroup>
 </Project>

src/Sql/dbo/Stored Procedures/Cipher_ReadByRevisionDateWithDeleteHistory.sql

@@ -0,0 +1,24 @@
+CREATE PROCEDURE [dbo].[Cipher_ReadByRevisionDateUserWithDeleteHistory]
+    @SinceRevisionDate DATETIME2(7),
+    @UserId UNIQUEIDENTIFIER
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    SELECT
+        *
+    FROM
+        [dbo].[CipherView]
+    WHERE
+        [RevisionDate] > @SinceRevisionDate
+        AND [UserId] = @UserId
+
+    SELECT
+        [CipherId]
+    FROM
+        [dbo].[History]
+    WHERE
+        [Date] > @SinceRevisionDate
+        AND [Event] = 2 -- Only cipher delete events.
+        AND [UserId] = @UserId
+END