From 2b375d11300d00ed426f7143014a4993da48d708 Mon Sep 17 00:00:00 2001
From: BonfaceKilz
Date: Fri, 7 May 2021 15:47:09 +0300
Subject: wqflask: Process MySQL URI and store the result in the global scope

---
 wqflask/wqflask/__init__.py | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/wqflask/wqflask/__init__.py b/wqflask/wqflask/__init__.py
index bf5e094b..2e94dd01 100644
--- a/wqflask/wqflask/__init__.py
+++ b/wqflask/wqflask/__init__.py
@@ -5,6 +5,8 @@ import jinja2
 
 from flask import g
 from flask import Flask
+from typing import Tuple
+from urllib.parse import urlparse
 from utility import formatting
 from wqflask.markdown_routes import glossary_blueprint
 from wqflask.markdown_routes import references_blueprint
@@ -16,9 +18,28 @@ from wqflask.markdown_routes import blogs_blueprint
 
 app = Flask(__name__)
 
+
+# Helper function for getting the SQL objects
+def parse_db_url(sql_uri: str) -> Tuple:
+    """Parse SQL_URI env variable from an sql URI
+    e.g. 'mysql://user:pass@host_name/db_name'
+
+    """
+    parsed_db = urlparse(sql_uri)
+    return (parsed_db.hostname, parsed_db.username,
+            parsed_db.password, parsed_db.path[1:])
+
+
 # See http://flask.pocoo.org/docs/config/#configuring-from-files
 # Note no longer use the badly named WQFLASK_OVERRIDES (nyi)
 app.config.from_envvar('GN2_SETTINGS')
+
+DB_HOST, DB_USER, DB_PASS, DB_NAME = parse_db_url(app.config.get('SQL_URI'))
+app.config["DB_HOST"] = DB_HOST
+app.config["DB_USER"] = DB_USER
+app.config["DB_PASS"] = DB_PASS
+app.config["DB_NAME"] = DB_NAME
+
 app.jinja_env.globals.update(
     undefined=jinja2.StrictUndefined,
     numify=formatting.numify)
-- 
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