Finish 1st version of open types

The code is very messy and there are a few optimizations to be made before the code is both user- and developer-friendly, but at least it works.

src/Internal/Api/PreApi/Main.elm

@@ -17,7 +17,7 @@ import Task
 import Time
 
 
-accessToken : String -> AccessToken -> ValueGetter String
+accessToken : String -> AccessToken -> ValueGetter X.Error String
 accessToken baseUrl t =
     { value =
         case t of
@@ -37,7 +37,7 @@ accessToken baseUrl t =
     }
 
 
-transactionId : (Int -> String) -> ValueGetter String
+transactionId : (Int -> String) -> ValueGetter X.Error String
 transactionId seeder =
     { value = Nothing
     , getValue =
@@ -47,7 +47,7 @@ transactionId seeder =
     }
 
 
-versions : String -> Maybe V.Versions -> ValueGetter V.Versions
+versions : String -> Maybe V.Versions -> ValueGetter X.Error V.Versions
 versions baseUrl mVersions =
     { value = mVersions
     , getValue =

src/Internal/Credentials.elm

@@ -9,11 +9,14 @@ This file combines the internal functions with the API endpoints to create a ful
 
 import Dict
 import Internal.Api.All as Api
-import Internal.Room as Room
 import Internal.Event as Event
+import Internal.Room as Room
+import Internal.Tools.Exceptions as X
 import Internal.Values.Credentials as Internal
 import Internal.Values.Event as IEvent
 import Internal.Values.Room as IRoom
+import Internal.Values.StateManager as StateManager
+import Task exposing (Task)
 
 
 {-| You can consider the `Credentials` type as a large ring of keys,
@@ -56,16 +59,23 @@ getRoomById roomId credentials =
                 }
             )
 
+
 {-| Insert an internal room type into the credentials.
 -}
 insertInternalRoom : IRoom.Room -> Credentials -> Credentials
-insertInternalRoom = Internal.insertRoom
+insertInternalRoom =
+    Internal.insertRoom
 
-{-| Internal a full room type into the credentials. -}
+
+{-| Internal a full room type into the credentials.
+-}
 insertRoom : Room.Room -> Credentials -> Credentials
-insertRoom = Room.internalValue >> insertInternalRoom
+insertRoom =
+    Room.internalValue >> insertInternalRoom
 
-{-| Update the Credentials type with new values -}
+
+{-| Update the Credentials type with new values
+-}
 updateWith : Api.CredUpdate -> Credentials -> Credentials
 updateWith credUpdate credentials =
     case credUpdate of
@@ -76,7 +86,7 @@ updateWith credUpdate credentials =
             case getRoomById input.roomId credentials of
                 Just room ->
                     output
-                        |> IEvent.initFromGetEvent
+                        |> Event.initFromGetEvent
                         |> Room.addInternalEvent
                         |> (|>) room
                         |> insertRoom
@@ -86,17 +96,20 @@ updateWith credUpdate credentials =
                     credentials
 
         Api.JoinedMembersToRoom _ _ ->
-            credentials -- TODO
+            credentials
 
+        -- TODO
         Api.MessageEventSent _ _ ->
-            credentials -- TODO
+            credentials
 
+        -- TODO
         Api.StateEventSent _ _ ->
-            credentials -- TODO
+            credentials
 
+        -- TODO
         Api.SyncUpdate input output ->
             let
-                rooms =
+                jRooms =
                     output.rooms
                         |> Maybe.map .join
                         |> Maybe.withDefault Dict.empty
@@ -109,17 +122,65 @@ updateWith credUpdate credentials =
                                         room
                                             |> Room.internalValue
                                             |> IRoom.addEvents
-                                    
+                                                { events =
+                                                    jroom.timeline
+                                                        |> Maybe.map .events
+                                                        |> Maybe.withDefault []
+                                                        |> List.map (Event.initFromClientEventWithoutRoomId roomId)
+                                                , nextBatch = output.nextBatch
+                                                , prevBatch =
+                                                    jroom.timeline
+                                                        |> Maybe.andThen .prevBatch
+                                                        |> Maybe.withDefault (Maybe.withDefault "" input.since)
+                                                , stateDelta =
+                                                    jroom.state
+                                                        |> Maybe.map
+                                                            (.events
+                                                                >> List.map (Event.initFromClientEventWithoutRoomId roomId)
+                                                                >> StateManager.fromEventList
+                                                            )
+                                                }
 
                                     -- Add new room
                                     Nothing ->
-                                    jroom
+                                        Room.initFromJoinedRoom { nextBatch = output.nextBatch, roomId = roomId } jroom
                             )
             in
-                credentials
+            List.foldl Internal.insertRoom (Internal.addSince output.nextBatch credentials) jRooms
 
         Api.UpdateAccessToken token ->
             Internal.addAccessToken token credentials
 
         Api.UpdateVersions versions ->
             Internal.addVersions versions credentials
+
+
+{-| Synchronize credentials
+-}
+sync : Credentials -> Task X.Error Api.CredUpdate
+sync credentials =
+    Api.syncCredentials
+        { accessToken = Internal.getAccessTokenType credentials
+        , baseUrl = Internal.getBaseUrl credentials
+        , filter = Nothing
+        , fullState = Nothing
+        , setPresence = Nothing
+        , since = Internal.getSince credentials
+        , timeout = Just 30
+        , versions = Internal.getVersions credentials
+        }
+
+
+{-| Get a list of all synchronised rooms.
+-}
+rooms : Credentials -> List Room.Room
+rooms credentials =
+    credentials
+        |> Internal.getRooms
+        |> ({ accessToken = Internal.getAccessTokenType credentials
+            , baseUrl = Internal.getBaseUrl credentials
+            , versions = Internal.getVersions credentials
+            }
+                |> Room.init
+                |> List.map
+           )

src/Internal/Event.elm

@@ -10,7 +10,7 @@ resend other events or forward them elsewhere.
 import Internal.Api.GetEvent.Main as GetEvent
 import Internal.Api.GetEvent.V1.SpecObjects as GetEventSO
 import Internal.Api.PreApi.Objects.Versions as V
-import Internal.Api.Sync.V1.SpecObjects as SyncSO
+import Internal.Api.Sync.V2.SpecObjects as SyncSO
 import Internal.Tools.LoginValues exposing (AccessToken)
 import Internal.Tools.Timestamp exposing (Timestamp)
 import Internal.Values.Event as Internal
@@ -86,7 +86,7 @@ initFromClientEventWithoutRoomId rId output =
                     (\(SyncSO.UnsignedData data) ->
                         { age = data.age
                         , prevContent = data.prevContent
-                        , redactedBecause = Maybe.map (initFromClientEventWithoutRoomId roomId) data.redactedBecause
+                        , redactedBecause = Maybe.map (initFromClientEventWithoutRoomId rId) data.redactedBecause
                         , transactionId = data.transactionId
                         }
                     )

src/Internal/Room.elm

@@ -3,13 +3,18 @@ module Internal.Room exposing (..)
 {-| The `Room` type represents a Matrix Room. In here, you will find utilities to ask information about a room.
 -}
 
+import Dict
 import Internal.Api.All as Api
 import Internal.Api.PreApi.Objects.Versions as V
+import Internal.Api.Sync.V2.SpecObjects as Sync
 import Internal.Event as Event exposing (Event)
 import Internal.Tools.Exceptions as X
+import Internal.Tools.Hashdict as Hashdict
 import Internal.Tools.LoginValues exposing (AccessToken)
 import Internal.Values.Event as IEvent
 import Internal.Values.Room as Internal
+import Internal.Values.StateManager as StateManager
+import Internal.Values.Timeline as Timeline
 import Json.Encode as E
 import Task exposing (Task)
 
@@ -31,6 +36,57 @@ type Room
         }
 
 
+{-| Create a new object from a joined room.
+-}
+initFromJoinedRoom : { roomId : String, nextBatch : String } -> Sync.JoinedRoom -> Internal.Room
+initFromJoinedRoom data jroom =
+    Internal.Room
+        { accountData =
+            jroom.accountData
+                |> Maybe.map .events
+                |> Maybe.withDefault []
+                |> List.map (\{ contentType, content } -> ( contentType, content ))
+                |> Dict.fromList
+        , ephemeral =
+            jroom.ephemeral
+                |> Maybe.map .events
+                |> Maybe.withDefault []
+                |> List.map IEvent.BlindEvent
+        , events =
+            jroom.timeline
+                |> Maybe.map .events
+                |> Maybe.withDefault []
+                |> List.map (Event.initFromClientEventWithoutRoomId data.roomId)
+                |> Hashdict.fromList IEvent.eventId
+        , roomId = data.roomId
+        , timeline =
+            jroom.timeline
+                |> Maybe.map
+                    (\timeline ->
+                        Timeline.newFromEvents
+                            { events = List.map (Event.initFromClientEventWithoutRoomId data.roomId) timeline.events
+                            , nextBatch = data.nextBatch
+                            , prevBatch = timeline.prevBatch
+                            , stateDelta =
+                                jroom.state
+                                    |> Maybe.map
+                                        (.events
+                                            >> List.map (Event.initFromClientEventWithoutRoomId data.roomId)
+                                            >> StateManager.fromEventList
+                                        )
+                            }
+                    )
+                |> Maybe.withDefault
+                    (Timeline.newFromEvents
+                        { events = []
+                        , nextBatch = data.nextBatch
+                        , prevBatch = Nothing
+                        , stateDelta = Nothing
+                        }
+                    )
+        }
+
+
 {-| Adds an internal event to the `Room`. An internal event is a custom event
 that has been generated by the client.
 -}
@@ -66,6 +122,21 @@ internalValue (Room { room }) =
     room
 
 
+{-| Get the most recent events.
+-}
+mostRecentEvents : Room -> List Event
+mostRecentEvents (Room data) =
+    data.room
+        |> Internal.mostRecentEvents
+        |> List.map
+            (Event.init
+                { accessToken = data.accessToken
+                , baseUrl = data.baseUrl
+                , versions = data.versions
+                }
+            )
+
+
 {-| Retrieves the ID of the Matrix room associated with the given `Room`.
 -}
 roomId : Room -> String

src/Internal/Values/Credentials.elm

@@ -11,7 +11,13 @@ import Internal.Values.Room as Room exposing (Room)
 
 
 type Credentials
-    = Credentials { access : AccessToken, baseUrl : String, rooms : Hashdict Room, versions : Maybe V.Versions }
+    = Credentials
+        { access : AccessToken
+        , baseUrl : String
+        , rooms : Hashdict Room
+        , since : Maybe String
+        , versions : Maybe V.Versions
+        }
 
 
 {-| Add a new access token based on prior information.
@@ -28,6 +34,13 @@ addVersions versions (Credentials data) =
     Credentials { data | versions = Just versions }
 
 
+{-| Add a new `since` token to sync from.
+-}
+addSince : String -> Credentials -> Credentials
+addSince since (Credentials data) =
+    Credentials { data | since = Just since }
+
+
 {-| Get the stringed access token the Credentials type is using, if any.
 -}
 getAccessToken : Credentials -> Maybe String
@@ -64,10 +77,18 @@ defaultCredentials homeserver =
         { access = NoAccess
         , baseUrl = homeserver
         , rooms = Hashdict.empty Room.roomId
+        , since = Nothing
         , versions = Nothing
         }
 
 
+{-| Get the latest `since` token.
+-}
+getSince : Credentials -> Maybe String
+getSince (Credentials { since }) =
+    since
+
+
 {-| Create a Credentials type using an unknown access token.
 -}
 fromAccessToken : { accessToken : String, homeserver : String } -> Credentials
@@ -102,3 +123,10 @@ insertRoom : Room -> Credentials -> Credentials
 insertRoom room (Credentials cred) =
     Credentials
         { cred | rooms = Hashdict.insert room cred.rooms }
+
+
+{-| Get a list of all synchronised rooms.
+-}
+getRooms : Credentials -> List Room
+getRooms (Credentials { rooms }) =
+    Hashdict.values rooms

src/Internal/Values/Room.elm

@@ -56,3 +56,10 @@ getEventById eventId (Room room) =
 roomId : Room -> String
 roomId (Room room) =
     room.roomId
+
+
+{-| Get the most recent events.
+-}
+mostRecentEvents : Room -> List Event
+mostRecentEvents (Room room) =
+    Timeline.mostRecentEvents room.timeline