Use separate function to talk to engine in adapter

adapter/adapter.py

@@ -29,19 +29,24 @@ def make_piece(piece_str):
     }
 
 
-@app.route("/get_state/")
-def get_state():
-    engine.stdin.write(b"get_state\n")
+def ask_engine(command):
+    engine.stdin.write(f"{command}\n".encode("ascii"))
     engine.stdin.flush()
     reply = engine.stdout.readline().decode("ascii").strip()
-    status, position_str = reply.split(",")
+    status, result = reply.split(",")
     if status != "ok":
         flask.abort(400)
-    position = {
-        position_str[i + 2 : i + 4]: make_piece(position_str[i : i + 2])
-        for i in range(0, len(position_str), 4)
+    return result
+
+
+@app.route("/get_state/")
+def get_state():
+    state_str = ask_engine("get_state")
+    state = {
+        state_str[i + 2 : i + 4]: make_piece(state_str[i : i + 2])
+        for i in range(0, len(state_str), 4)
     }
-    return flask.jsonify(position)
+    return flask.jsonify(state)
 
 
 if __name__ == "__main__":