Bitbucket server, WIP

pr_agent/servers/bitbucket_app.py

@@ -1,16 +1,52 @@
+import hashlib
 import json
+import logging
 import os
+import time
 
+import jwt
+import requests
 import uvicorn
 from fastapi import APIRouter, FastAPI, Request, Response
 from starlette.middleware import Middleware
 from starlette.responses import JSONResponse
+from starlette_context import context
 from starlette_context.middleware import RawContextMiddleware
 
+from pr_agent.agent.pr_agent import PRAgent
 from pr_agent.config_loader import get_settings
+from pr_agent.secret_providers import get_secret_provider
 
 router = APIRouter()
+secret_provider = get_secret_provider()
 
+async def get_bearer_token(shared_secret: str, client_key: str):
+    try:
+        now = int(time.time())
+        url = "https://bitbucket.org/site/oauth2/access_token"
+        canonical_url = "GET&/site/oauth2/access_token&"
+        qsh = hashlib.sha256(canonical_url.encode("utf-8")).hexdigest()
+        app_key = get_settings().bitbucket.app_key
+
+        payload = {
+            "iss": app_key,
+            "iat": now,
+            "exp": now + 240,
+            "qsh": qsh,
+            "sub": client_key,
+            }
+        token = jwt.encode(payload, shared_secret, algorithm="HS256")
+        payload = 'grant_type=urn%3Abitbucket%3Aoauth2%3Ajwt'
+        headers = {
+            'Authorization': f'JWT {token}',
+            'Content-Type': 'application/x-www-form-urlencoded'
+        }
+        response = requests.request("POST", url, headers=headers, data=payload)
+        bearer_token = response.json()["access_token"]
+        return bearer_token
+    except Exception as e:
+        logging.error(f"Failed to get bearer token: {e}")
+        raise e
 
 @router.get("/")
 async def handle_manifest(request: Request, response: Response):
@@ -20,8 +56,24 @@ async def handle_manifest(request: Request, response: Response):
 
 @router.post("/webhook")
 async def handle_github_webhooks(request: Request, response: Response):
-    data = await request.json()
-    print(data)
+    try:
+        print(request.headers)
+        data = await request.json()
+        print(data)
+        owner = data["data"]["repository"]["owner"]["username"]
+        secrets = json.loads(secret_provider.get_secret(owner))
+        shared_secret = secrets["shared_secret"]
+        client_key = secrets["client_key"]
+        bearer_token = await get_bearer_token(shared_secret, client_key)
+        context['bitbucket_bearer_token'] = bearer_token
+        event = data["event"]
+        agent = PRAgent()
+        if event == "pullrequest:created":
+            pr_url = data["data"]["pullrequest"]["links"]["html"]["href"]
+            await agent.handle_request(pr_url, "review")
+    except Exception as e:
+        logging.error(f"Failed to handle webhook: {e}")
+        return JSONResponse({"error": "Unable to handle webhook"}, status_code=500)
 
 @router.get("/webhook")
 async def handle_github_webhooks(request: Request, response: Response):
@@ -29,8 +81,21 @@ async def handle_github_webhooks(request: Request, response: Response):
 
 @router.post("/installed")
 async def handle_installed_webhooks(request: Request, response: Response):
-    data = await request.json()
-    print(data)
+    try:
+        print(request.headers)
+        data = await request.json()
+        print(data)
+        shared_secret = data["sharedSecret"]
+        client_key = data["clientKey"]
+        username = data["principal"]["username"]
+        secrets = {
+            "shared_secret": shared_secret,
+            "client_key": client_key
+        }
+        secret_provider.store_secret(username, json.dumps(secrets))
+    except Exception as e:
+        logging.error(f"Failed to register user: {e}")
+        return JSONResponse({"error": "Unable to register user"}, status_code=500)
 
 @router.post("/uninstalled")
 async def handle_uninstalled_webhooks(request: Request, response: Response):
@@ -40,6 +105,7 @@ async def handle_uninstalled_webhooks(request: Request, response: Response):
 
 def start():
     get_settings().set("CONFIG.PUBLISH_OUTPUT_PROGRESS", False)
+    get_settings().set("CONFIG.GIT_PROVIDER", "bitbucket")
     middleware = [Middleware(RawContextMiddleware)]
     app = FastAPI(middleware=middleware)
     app.include_router(router)