Alter 4 files

Update `.gitignore`
Update `__main__.py`
Add `db.py`
Add `endpoints.py`

.gitignore

@@ -1,3 +1,4 @@
+duckpond.db
 
 ### Python ###
 # Byte-compiled / optimized / DLL files

backend/duckpond/__main__.py

@@ -1,18 +1,20 @@
 import flask
 
+import db
+import endpoints
+
+
 __version__ = '0.1.0'
 
 
 def main():
     app = flask.Flask(__name__)
-    app.add_url_rule("/", view_func=index)
+
+    database = db.DB("duckpond.db")
+    _ = endpoints.Endpoints(app, database)
 
     app.run(port=8080, debug=True, host="127.0.0.1")
 
 
-def index():
-    return "<h2>Hello world!</h2>"
-
-
 if __name__ == "__main__":
     main()

backend/duckpond/db.py

@@ -0,0 +1,8 @@
+import sqlite3
+
+class DB:
+    conn: sqlite3.Connection
+
+    def __init__(self, filename: str):
+        self.conn = sqlite3.connect(filename)
+        

backend/duckpond/endpoints.py

@@ -0,0 +1,14 @@
+import flask
+
+import db
+
+class Endpoints:
+    db: db.DB
+
+    def __init__(self, app: flask.Flask, database: db.DB):
+        self.db = database
+
+        app.add_url_rule("/", view_func=self.index)
+
+    def index(self):
+        return "<h2>Hello world</h2>"