feat:expose the search engine params to user

Author: goasleep

scrapegraphai/graphs/omni_search_graph.py

@@ -83,7 +83,8 @@ def _create_graph(self) -> BaseGraph:
             output=["urls"],
             node_config={
                 "llm_model": self.llm_model,
-                "max_results": self.max_results
+                "max_results": self.max_results,
+                "search_engine": self.copy_config.get("search_engine")
             }
         )
         graph_iterator_node = GraphIteratorNode(

scrapegraphai/graphs/search_graph.py

@@ -76,7 +76,8 @@ def _create_graph(self) -> BaseGraph:
             output=["urls"],
             node_config={
                 "llm_model": self.llm_model,
-                "max_results": self.max_results
+                "max_results": self.max_results,
+                "search_engine": self.copy_config.get("search_engine")
             }
         )
         graph_iterator_node = GraphIteratorNode(

scrapegraphai/nodes/search_internet_node.py

@@ -41,7 +41,11 @@ def __init__(
         self.verbose = (
             False if node_config is None else node_config.get("verbose", False)
         )
-        self.search_engine = node_config.get("search_engine", "google")
+        self.search_engine = (
+            node_config["search_engine"]
+            if node_config.get("search_engine")
+            else "google"
+        )
         self.max_results = node_config.get("max_results", 3)
 
     def execute(self, state: dict) -> dict: