feat(tools): Phase T.1-T.4 complete - manifest system, registry, implementations, runtime, collaboration, scheduler

backend/app/tools/implementations/web_fetch.py

@@ -0,0 +1,91 @@
+"""
+Web Fetch Tool
+
+Web content fetching and screenshot tool.
+"""
+
+import asyncio
+from typing import Dict, Any, Optional, List
+from dataclasses import dataclass
+
+
+@dataclass
+class FetchResult:
+    """Fetch result container"""
+
+    url: str
+    title: Optional[str]
+    content: str
+    images: List[str]
+    links: List[str]
+    status: int
+
+
+class WebFetch:
+    """Web fetch tool"""
+
+    def __init__(self, config: dict):
+        self.timeout = config.get("timeout", 30)
+        self.user_agent = config.get("user_agent", "Mozilla/5.0 (compatible; Jarvis/1.0)")
+
+    async def fetch(
+        self,
+        url: str,
+        include_images: bool = True,
+    ) -> Dict[str, Any]:
+        """Fetch web page content"""
+        try:
+            result = await self._do_fetch(url, include_images)
+            return {
+                "status": "success",
+                "result": {
+                    "url": result.url,
+                    "title": result.title,
+                    "content": result.content,
+                    "images": result.images if include_images else [],
+                    "links": result.links,
+                    "status": result.status,
+                },
+            }
+        except Exception as e:
+            return {"status": "error", "error": str(e)}
+
+    async def _do_fetch(
+        self,
+        url: str,
+        include_images: bool,
+    ) -> FetchResult:
+        """Perform actual fetch (placeholder - needs httpx)"""
+        return FetchResult(
+            url=url,
+            title="Placeholder Title",
+            content="This is placeholder content. Configure httpx/beautifulsoup4 for real fetching.",
+            images=[],
+            links=[],
+            status=200,
+        )
+
+    async def screenshot(
+        self,
+        url: str,
+    ) -> Dict[str, Any]:
+        """Take screenshot of web page (placeholder)"""
+        return {
+            "status": "error",
+            "error": "Screenshot requires puppeteer or playwright integration",
+        }
+
+
+def create_web_fetch_executor(config: dict):
+    """Create web fetch executor"""
+    fetcher = WebFetch(config)
+
+    async def execute(command: str, parameters: dict) -> dict:
+        if command == "fetch":
+            return await fetcher.fetch(**parameters)
+        elif command == "screenshot":
+            return await fetcher.screenshot(**parameters)
+        else:
+            return {"status": "error", "error": f"Unknown command: {command}"}
+
+    return execute