first commit

screens/screens_repo/create_screen.py

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+import db
+
+from .ensure_schema import ensure_schema
+
+
+def create_screen(slug, name, is_template=False):
+    ensure_schema(slug)
+    conn = db.connect(slug)
+    if is_template:
+        order_index = 0
+    else:
+        max_order = conn.execute("SELECT MAX(order_index) AS m FROM _screens WHERE is_template = 0").fetchone()["m"]
+        order_index = (max_order or 0) + 1
+    conn.execute(
+        "INSERT INTO _screens (name, order_index, is_template) VALUES (?, ?, ?)",
+        (name, order_index, 1 if is_template else 0),
+    )
+    screen_id = conn.execute("SELECT last_insert_rowid() AS id").fetchone()["id"]
+    conn.commit()
+    conn.close()
+    return screen_id