Added GitHub OAuth endpoints

endpoints/__init__.py

+from .oauth import github_oauth_callback, github_oauth_redirect
 from .service import ping

endpoints/oauth.py

+from starlette.requests import Request
+from starlette.responses import RedirectResponse
+from settings import GITHUB_CLIENT_ID
+
+from integrations.github import GithubAPI
+from responses.errors import NoGithubCode
+
+
+async def github_oauth_callback(request: Request):
+    """ GitHub OAuth callback request """
+    if "code" not in request.query_params:
+        raise NoGithubCode
+    github_code = request.query_params["code"]
+    access_token = await GithubAPI.process_code(github_code)
+    github_data = await GithubAPI.get_user(access_token)
+    return RedirectResponse("/", 301, headers={
+        "Set-Cookie":
+            f"token=[user={github_data['user_id']}&login={github_data['username']}]"  # TODO: save token to cookies
+    })
+
+
+async def github_oauth_redirect(request: Request):
+    """ Redirect to GitHub OAuth login window """
+    return RedirectResponse(f"https://github.com/login/oauth/authorize?client_id={GITHUB_CLIENT_ID}", 301)

endpoints/routes.py

 from starlette.routing import Route
-from endpoints import ping
+
+from endpoints import *
+
 unauthenticated_routes = [
-    Route("/ping", ping, methods=["GET"])
+    Route("/ping", ping, methods=["GET"]),
+    Route("/login/github", github_oauth_redirect, methods=["GET"]),
+    Route("/oauth/github", github_oauth_callback, methods=["GET"])
 ]
 
 api_available_routes = []
@@ -10,4 +14,4 @@ user_only_routes = []
 
 admin_routes = []
 
-routes = unauthenticated_routes + api_available_routes + user_only_routes
+routes = unauthenticated_routes + api_available_routes + user_only_routes + admin_routes

tests/test_github_oauth.py

+from json import dumps
+from urllib.parse import urlparse
+
+from responses.errors import NoGithubCode
+from responses.responses import BadResponse
+from tests.fixtures.aioresponse import mocked
+from tests.fixtures.client import sti
+
+
+def test_github_oauth(sti, mocked):
+    mocked.post("https://github.com/login/oauth/access_token", status=200, body=dumps({
+        "access_token": "ghAAAA",
+        "scope": "repo,gist",
+        "token_type": "bearer"
+    }))
+    mocked.get("https://api.github.com/user", status=200, body=dumps({"login": "krol", "id": 54}))
+
+    resp = sti.get("/oauth/github?code=12345", follow_redirects=False)
+
+    assert resp.status_code == 301
+    assert resp.headers.get("Set-Cookie") == "token=[user=54&login=krol]"
+
+
+def test_github_oauth_no_code(sti):
+    resp = sti.get("/oauth/github")
+
+    assert resp.status_code == 422
+    assert resp.json()["data"]["error_code"] == NoGithubCode().code
+
+
+def test_github_oauth_redirect(sti):
+    resp = sti.get("/login/github", follow_redirects=False)
+
+    assert resp.status_code == 301
+    redirect_url = urlparse(resp.headers["Location"])
+    assert redirect_url.path == "/login/oauth/authorize"
+    assert redirect_url.hostname == "github.com"