Add `create_app()` application factory

Create the application and set up configs and other things within an
application factory function.

Fix obvious egregious errors preventing the application from starting
up correctly.

1 files changed, 60 insertions, 0 deletions

diff --git a/wqflask/gn2_main.py b/wqflask/gn2_main.py
new file mode 100644
index 00000000..923a35d3
--- /dev/null
+++ b/wqflask/gn2_main.py
@@ -0,0 +1,60 @@
+"""Main app creation module"""
+import time
+
+from flask import g, session, request
+
+from wqflask import create_app
+from wqflask.user_session import UserSession
+from gn3.authentication import DataRole, AdminRole
+
+app = create_app()
+
+@app.before_request
+def before_request():
+    g.request_start_time = time.time()
+    g.request_time = lambda: "%.5fs" % (time.time() - g.request_start_time)
+
+    token = session.get("oauth2_token", False)
+    if token and not bool(session.get("user_details", False)):
+        config = current_app.config
+        client = OAuth2Session(
+            config["OAUTH2_CLIENT_ID"], config["OAUTH2_CLIENT_SECRET"],
+            token=token)
+        resp = client.get(
+            urljoin(config["GN_SERVER_URL"], "oauth2/user"))
+        user_details = resp.json()
+        session["user_details"] = user_details
+
+        if user_details.get("error") == "invalid_token":
+            flash(user_details["error_description"], "alert-danger")
+            flash("You are now logged out.", "alert-info")
+            session.pop("user_details", None)
+            session.pop("oauth2_token", None)
+
+@app.context_processor
+def include_admin_role_class():
+    return {'AdminRole': AdminRole}
+
+
+@app.context_processor
+def include_data_role_class():
+    return {'DataRole': DataRole}
+
+@app.before_request
+def get_user_session():
+    g.user_session = UserSession()
+    # I think this should solve the issue of deleting the cookie and redirecting to the home page when a user's session has expired
+    if not g.user_session:
+        response = make_response(redirect(url_for('login')))
+        response.set_cookie('session_id_v2', '', expires=0)
+        return response
+
+@app.after_request
+def set_user_session(response):
+    if hasattr(g, 'user_session'):
+        if not request.cookies.get(g.user_session.cookie_name):
+            response.set_cookie(g.user_session.cookie_name,
+                                g.user_session.cookie)
+    else:
+        response.set_cookie('session_id_v2', '', expires=0)
+    return response