unsharetactic to team

API/Controllers/TeamsController.cs

@@ -91,6 +91,26 @@ public class TeamsController(ITeamService service, ITacticService tactics,IConte
         return success ? Ok() : BadRequest();
     }
     
+    [HttpDelete("/tactics/shared/{tacticId:int}/team/{teamId:int}")]
+    [Authorize]
+    public async Task<IActionResult> UnshareTactic(int tacticId, int teamId)
+    {
+        var currentUserId = accessor.CurrentUserId(HttpContext);
+        var tactic = await tactics.GetTactic(tacticId);
+
+        if (tactic == null)
+        {
+            return NotFound();
+        }
+        if (currentUserId != tactic.OwnerId)
+        {
+            return Unauthorized();
+        }
+
+        var success = await tactics.UnshareTactic(tacticId, null, teamId);
+        return success ? Ok() : NotFound();
+    }
+    
     [HttpGet("/tactics/shared/team/{teamId:int}")]
     [Authorize]
     public async Task<IActionResult> GetSharedTacticsToTeam(int teamId)