Add iOS method for sync

backend/app/api/v1/trainings.py

@@ -1,6 +1,6 @@
 from typing import List
 
-from fastapi import APIRouter, Depends, HTTPException
+from fastapi import APIRouter, Depends, HTTPException, status
 
 from app.api.deps import (
     get_current_user,
@@ -70,6 +70,26 @@ async def get_training(
     return training
 
 
+@router.post("/", response_model=TrainingDTO, status_code=status.HTTP_201_CREATED)
+async def create_training(
+    payload: TrainingUpdate,
+    user: UserDTO = Depends(get_current_user),
+    repository: TrainingRepository = Depends(get_training_repository),
+    user_repository: UserRepository = Depends(get_user_repository),
+):
+    """Create a training. Only a superuser may create it for another trainee."""
+    if payload.trainee_id != user.id:
+        if not user.is_superuser:
+            raise HTTPException(
+                status_code=403, detail="Only a superuser can create a training for another user"
+            )
+        await _check_participant(user_repository, payload.trainee_id, UserRole.trainee)
+    if payload.trainer_id is not None:
+        await _check_participant(user_repository, payload.trainer_id, UserRole.trainer)
+    training_id = await repository.save(TrainingDTO.model_validate(payload.model_dump()))
+    return await repository.get(training_id)
+
+
 @router.put("/{training_id}/", response_model=TrainingDTO)
 async def update_training(
     training_id: int,