[PM-2383] Bulk collection assignment (#3919)

* [PM-2383] Add bulk add/remove collection cipher repository methods

* [PM-2383] Add additional authorization helpers for CiphersControlle

* [PM-2383] Add /bulk-collections endpoint to CiphersController.cs

* [PM-2383] Add EF implementation for new CollectionCipherRepository methods

* [PM-2383] Ensure V1 logic only applies when the flag is enabled for new bulk functionality

util/Migrator/DbScripts/2024-03-20_00_BulkCipherCollectionAssignment.sql

@@ -0,0 +1,85 @@
+CREATE OR ALTER PROCEDURE [dbo].[CollectionCipher_AddCollectionsForManyCiphers]
+    @CipherIds AS [dbo].[GuidIdArray] READONLY,
+    @OrganizationId UNIQUEIDENTIFIER,
+    @CollectionIds AS [dbo].[GuidIdArray] READONLY
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    CREATE TABLE #AvailableCollections (
+        [Id] UNIQUEIDENTIFIER
+    )
+
+    INSERT INTO #AvailableCollections
+        SELECT
+            C.[Id]
+        FROM
+            [dbo].[Collection] C
+        INNER JOIN
+            [dbo].[Organization] O ON O.[Id] = C.[OrganizationId]
+        WHERE
+            O.[Id] = @OrganizationId AND O.[Enabled] = 1
+
+    IF (SELECT COUNT(1) FROM #AvailableCollections) < 1
+    BEGIN
+        -- No collections available
+        RETURN
+    END
+
+    ;WITH [SourceCollectionCipherCTE] AS(
+        SELECT
+            [Collection].[Id] AS [CollectionId],
+            [Cipher].[Id] AS [CipherId]
+        FROM
+            @CollectionIds AS [Collection]
+        CROSS JOIN
+            @CipherIds AS [Cipher]
+        WHERE
+            [Collection].[Id] IN (SELECT [Id] FROM #AvailableCollections)
+    )
+    MERGE
+        [CollectionCipher] AS [Target]
+    USING
+        [SourceCollectionCipherCTE] AS [Source]
+    ON
+        [Target].[CollectionId] = [Source].[CollectionId]
+        AND [Target].[CipherId] = [Source].[CipherId]
+    WHEN NOT MATCHED BY TARGET THEN
+        INSERT VALUES
+        (
+            [Source].[CollectionId],
+            [Source].[CipherId]
+        )
+   ;
+
+    EXEC [dbo].[User_BumpAccountRevisionDateByOrganizationId] @OrganizationId
+END
+GO
+
+CREATE OR ALTER PROCEDURE [dbo].[CollectionCipher_RemoveCollectionsForManyCiphers]
+    @CipherIds AS [dbo].[GuidIdArray] READONLY,
+    @OrganizationId UNIQUEIDENTIFIER,
+    @CollectionIds AS [dbo].[GuidIdArray] READONLY
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    DECLARE @BatchSize INT = 100
+
+    WHILE @BatchSize > 0
+    BEGIN
+        BEGIN TRANSACTION CollectionCipher_DeleteMany
+            DELETE TOP(@BatchSize)
+            FROM
+                [dbo].[CollectionCipher]
+            WHERE
+                [CipherId] IN (SELECT [Id] FROM @CipherIds) AND
+                [CollectionId] IN (SELECT [Id] FROM @CollectionIds)
+
+            SET @BatchSize = @@ROWCOUNT
+       COMMIT TRANSACTION CollectionCipher_DeleteMany
+    END
+
+    EXEC [dbo].[User_BumpAccountRevisionDateByOrganizationId] @OrganizationId
+END
+GO