feat: backend orkestrasyonunu ve arac entegrasyonlarini genislet

backend/app/tools/web_fetch.py

@@ -1,5 +1,8 @@
+import re
 from typing import Any
 
+import httpx
+
 from app.tools.base import Tool
 
 
@@ -7,12 +10,56 @@ class WebFetchTool(Tool):
     name = "web_fetch"
     description = "Fetch a webpage and return simplified content."
 
-    async def run(self, payload: dict[str, Any]) -> dict[str, Any]:
-        url = str(payload.get("url", "")).strip()
+    def parameters_schema(self) -> dict[str, Any]:
         return {
-            "tool": self.name,
-            "status": "stub",
-            "url": url,
-            "message": "Web fetch integration is not wired yet.",
+            "type": "object",
+            "properties": {
+                "url": {
+                    "type": "string",
+                    "description": "The http or https URL to fetch.",
+                }
+            },
+            "required": ["url"],
+            "additionalProperties": False,
         }
 
+    async def run(self, payload: dict[str, Any]) -> dict[str, Any]:
+        url = str(payload.get("url", "")).strip()
+        if not url.startswith(("http://", "https://")):
+            return {
+                "tool": self.name,
+                "status": "error",
+                "url": url,
+                "message": "Only http and https URLs are allowed.",
+            }
+
+        try:
+            async with httpx.AsyncClient(timeout=15.0, follow_redirects=True) as client:
+                response = await client.get(url)
+                response.raise_for_status()
+        except httpx.HTTPError as exc:
+            return {
+                "tool": self.name,
+                "status": "error",
+                "url": url,
+                "message": str(exc),
+            }
+
+        text = self._simplify_content(response.text)
+        return {
+            "tool": self.name,
+            "status": "ok",
+            "url": url,
+            "content_type": response.headers.get("content-type", ""),
+            "content": text[:12000],
+            "truncated": len(text) > 12000,
+        }
+
+    def _simplify_content(self, content: str) -> str:
+        text = re.sub(r"(?is)<script.*?>.*?</script>", " ", content)
+        text = re.sub(r"(?is)<style.*?>.*?</style>", " ", text)
+        text = re.sub(r"(?s)<[^>]+>", " ", text)
+        text = re.sub(r"&nbsp;", " ", text)
+        text = re.sub(r"&amp;", "&", text)
+        text = re.sub(r"\s+", " ", text)
+        return text.strip()