feat (#19): Get current user session

grpc-engine/src/main/kotlin/io/timemates/api/grpc/GrpcTimeMatesRequestsEngine.kt

@@ -368,6 +368,11 @@ public class GrpcTimeMatesRequestsEngine(
                 headers = authorizedMetadata(request.accessHash),
             ).let { SdkEmpty }
 
+            is GetUserCurrentSessionRequest -> timerSessionsService.getUserCurrentSession(
+                    request = Empty.getDefaultInstance(),
+                    headers = authorizedMetadata(request.accessHash),
+            ).let { timersMapper.grpcTimerToSdkTimer(it) }
+
             else -> unsupported(request::class)
         } as T
     }.mapException {

grpc-engine/src/main/proto/io/timemates/api/timers/sessions/TimerSessionsService.proto

@@ -5,7 +5,9 @@ import "io/timemates/api/timers/sessions/requests/StopTimerSessionRequest.proto"
 import "io/timemates/api/timers/sessions/requests/JoinTimerSessionRequest.proto";
 import "io/timemates/api/timers/sessions/requests/ConfirmTimerSessionRequest.proto";
 import "io/timemates/api/timers/sessions/requests/GetTimerStateRequest.proto";
+import "io/timemates/api/timers/sessions/requests/GetUserCurrentSessionRequest.proto";
 import "io/timemates/api/timers/sessions/types/TimerState.proto";
+import "io/timemates/api/timers/types/Timer.proto";
 import "google/protobuf/empty.proto";
 
 option java_package = "io.timemates.api.timers";
@@ -61,4 +63,9 @@ service TimerSessionsService {
    * The state is returned as a stream of TimerState messages.
    */
   rpc getState(GetTimerStateRequest) returns (stream TimerState);
+
+  /**
+  * Gets current timer session
+  */
+  rpc getUserCurrentSession(google.protobuf.Empty) returns (Timer);
 }

grpc-engine/src/main/proto/io/timemates/api/timers/sessions/requests/GetUserCurrentSessionRequest.proto

@@ -0,0 +1,11 @@
+syntax = "proto3";
+
+import "io/timemates/api/timers/types/Timer.proto";
+
+option java_package = "io.timemates.api.timers.sessions.requests";
+
+message GetUserCurrentSessionRequest {
+    message Response {
+        optional Timer timer = 1;
+    }
+}

sdk/src/commonMain/kotlin/io/timemates/sdk/timers/sessions/TimersSessionsApi.kt

@@ -6,6 +6,7 @@ import io.timemates.sdk.common.providers.AccessHashProvider
 import io.timemates.sdk.common.providers.getAsResult
 import io.timemates.sdk.common.types.Empty
 import io.timemates.sdk.timers.sessions.requests.*
+import io.timemates.sdk.timers.types.Timer
 import io.timemates.sdk.timers.types.value.TimerId
 
 /**
@@ -82,4 +83,14 @@ public class TimersSessionsApi(
         return tokenProvider.getAsResult()
             .flatMap { token -> engine.execute(ConfirmTimerRoundRequest(token)) }
     }
+
+    /**
+     * Returns current user session.
+     *
+     * @return A [Result] indicating the success or failure of the operation.
+     */
+    public suspend fun getUserCurrentSession(): Result<Timer> {
+        return tokenProvider.getAsResult()
+            .flatMap { token -> engine.execute(GetUserCurrentSessionRequest(token)) }
+    }
 }

sdk/src/commonMain/kotlin/io/timemates/sdk/timers/sessions/requests/GetUserCurrentSessionRequest.kt

@@ -0,0 +1,12 @@
+package io.timemates.sdk.timers.sessions.requests
+
+import io.timemates.sdk.authorization.types.value.AccessHash
+import io.timemates.sdk.common.types.TimeMatesRequest
+import io.timemates.sdk.timers.types.Timer
+
+/**
+ * Gets current timer session.
+ */
+public data class GetUserCurrentSessionRequest(
+    val accessHash: AccessHash,
+) : TimeMatesRequest<Timer>()