feat: add sortId for reaction sorting

Session/Conversations/ConversationVC+Interaction.swift

@@ -1089,7 +1089,8 @@ extension ConversationVC:
                     let sortId = Reaction.getSortId(
                         db,
                         interactionId: cellViewModel.id,
-                        emoji: emoji
+                        emoji: emoji,
+                        timestamp: sentTimestamp
                     )
                     try Reaction(
                         interactionId: cellViewModel.id,

SessionMessagingKit/Database/Models/Reaction.swift

@@ -46,7 +46,7 @@ public struct Reaction: Codable, Equatable, Hashable, FetchableRecord, Persistab
     /// regardless of the type of conversation)
     public let count: Int64
     
-    /// The id for sorting
+    /// The first timestamp that an emoji is added
     public let sortId: Int64
     
     // MARK: - Relationships
@@ -108,29 +108,19 @@ public extension Reaction {
     static func getSortId(
         _ db: Database,
         interactionId: Int64,
-        emoji: String
+        emoji: String,
+        timestamp: Int64
     ) -> Int64 {
-        let existingSortId: Int64? = try? Reaction
+        if let existingSortId: Int64 = try? Reaction
             .select(Columns.sortId)
             .filter(Columns.interactionId == interactionId)
             .filter(Columns.emoji == emoji)
             .asRequest(of: Int64.self)
             .fetchOne(db)
-        
-        if let sortId = existingSortId {
-            return sortId
+        {
+            return existingSortId
         }
         
-        let existingLargestSortId: Int64? = try? Reaction
-            .select(max(Columns.sortId))
-            .filter(Columns.interactionId == interactionId)
-            .asRequest(of: Int64.self)
-            .fetchOne(db)
-        
-        if let sortId = existingLargestSortId {
-            return sortId + 1
-        }
-        
-        return 0
+        return timestamp
     }
 }

SessionMessagingKit/Messages/Message.swift

@@ -369,7 +369,7 @@ public extension Message {
                let reactors = rawReaction.reactors
             {
                 var count = rawReaction.count
-                let sortId: Int64 = 0 // TODO: Need to be modified to the server returned value
+                let sortId: Int64 = Int64(floor((rawReaction.first * 1000)))
                 for reactor in reactors {
                     if reactor == blindedUserPublicKey { continue } // Will add a reaction for this case outside of the loop
                     let reaction = Reaction(

SessionMessagingKit/Open Groups/Models/SOGSMessage.swift

@@ -38,11 +38,13 @@ extension OpenGroupAPI {
                 case count
                 case reactors
                 case you
+                case first
             }
             
             public let count: Int64
             public let reactors: [String]?
             public let you: Bool
+            public let first: TimeInterval
         }
         
         public let reactions: [String:Reaction]?
@@ -114,7 +116,8 @@ extension OpenGroupAPI.Message.Reaction {
         self = OpenGroupAPI.Message.Reaction(
             count: try container.decode(Int64.self, forKey: .count),
             reactors: try? container.decode([String].self, forKey: .reactors),
-            you: (try? container.decode(Bool.self, forKey: .you)) ?? false
+            you: (try? container.decode(Bool.self, forKey: .you)) ?? false,
+            first: ((try? container.decode(TimeInterval.self, forKey: .first)) ?? Date().timeIntervalSince1970)
         )
     }
 }

SessionMessagingKit/Sending & Receiving/Message Handling/MessageReceiver+VisibleMessages.swift

@@ -327,7 +327,8 @@ extension MessageReceiver {
         let sortId = Reaction.getSortId(
             db,
             interactionId: interactionId,
-            emoji: reaction.emoji
+            emoji: reaction.emoji,
+            timestamp: Int64(messageSentTimestamp * 1000)
         )
         
         switch reaction.kind {

SessionMessagingKit/Shared Models/MessageViewModel.swift

@@ -465,7 +465,7 @@ public extension MessageViewModel {
         // MARK: - Comparable
         
         public static func < (lhs: ReactionInfo, rhs: ReactionInfo) -> Bool {
-            return (lhs.reaction.timestampMs < rhs.reaction.timestampMs)
+            return (lhs.reaction.sortId < rhs.reaction.sortId)
         }
     }
 }