feat: backend implementation of various search APIs

backend/apps/rag/search/serper.py

@@ -0,0 +1,39 @@
+import json
+import logging
+
+import requests
+
+from apps.rag.search.main import SearchResult
+from config import SRC_LOG_LEVELS
+
+log = logging.getLogger(__name__)
+log.setLevel(SRC_LOG_LEVELS["RAG"])
+
+
+def search_serper(api_key: str, query: str) -> list[SearchResult]:
+    """Search using serper.dev's API and return the results as a list of SearchResult objects.
+
+    Args:
+        api_key (str): A serper.dev API key
+        query (str): The query to search for
+    """
+    url = "https://google.serper.dev/search"
+
+    payload = json.dumps({"q": query})
+    headers = {"X-API-KEY": api_key, "Content-Type": "application/json"}
+
+    response = requests.request("POST", url, headers=headers, data=payload)
+    response.raise_for_status()
+
+    json_response = response.json()
+    results = sorted(
+        json_response.get("organic", []), key=lambda x: x.get("position", 0)
+    )
+    return [
+        SearchResult(
+            link=result["url"],
+            title=result.get("title"),
+            snippet=result.get("description"),
+        )
+        for result in results
+    ]