From 74eed9a6e2918f62c49fd90ecc274ecdbd96ab82 Mon Sep 17 00:00:00 2001
From: Mark Liffiton <liffiton@gmail.com>
Date: Fri, 8 Nov 2024 15:24:19 -0600
Subject: [PATCH] Fix temporary file conflicts on Windows.

---
 src/gened/admin.py |  5 +++--
 src/gened/base.py  | 47 +++++++++++++++++++++++-----------------------
 2 files changed, 27 insertions(+), 25 deletions(-)

diff --git a/src/gened/admin.py b/src/gened/admin.py
index b9b40af..c98f9c0 100644
--- a/src/gened/admin.py
+++ b/src/gened/admin.py
@@ -334,12 +334,13 @@ def main() -> str:
 @register_admin_link("Download DB", right=True)
 @bp.route("/get_db")
 def get_db_file() -> Response:
-    db_backup_file = NamedTemporaryFile()
+    db_backup_file = NamedTemporaryFile(delete_on_close=False)
+    db_backup_file.close()  # avoid double-open in the backup_db function (fails on Windows)
     backup_db(Path(db_backup_file.name))
     db_name = current_app.config['DATABASE_NAME']
     db_basename = Path(db_name).stem
     dl_name = f"{db_basename}_{date.today().strftime('%Y%m%d')}.db"
-    return send_file(db_backup_file, mimetype='application/vnd.sqlite3', as_attachment=True, download_name=dl_name)
+    return send_file(db_backup_file.name, mimetype='application/vnd.sqlite3', as_attachment=True, download_name=dl_name)
 
 
 @bp.route("/consumer/new")
diff --git a/src/gened/base.py b/src/gened/base.py
index 9f37243..389f234 100644
--- a/src/gened/base.py
+++ b/src/gened/base.py
@@ -164,29 +164,6 @@ def create_app_base(import_name: str, app_config: dict[str, Any], instance_path:
     # configure the application
     app.config.from_mapping(total_config)
 
-    # run setup and checks that depend on the database iff it is initialized
-    with app.app_context():
-        db_conn = db.get_db()
-        try:
-            db_conn.execute("SELECT 1 FROM consumers LIMIT 1")
-            db_conn.execute("SELECT 1 FROM models LIMIT 1")
-            db_initialized = True
-        except sqlite3.OperationalError:
-            db_initialized = False
-
-        if db_initialized:
-            # load consumers from DB
-            admin.reload_consumers()
-
-            # validate that the default class model exists and is active
-            default_model_row = db_conn.execute(
-                "SELECT 1 FROM models WHERE active AND shortname = ?",
-                [app.config['DEFAULT_CLASS_MODEL_SHORTNAME']]
-            ).fetchone()
-            if not default_model_row:
-                app.logger.error(f"Default model shortname '{app.config['DEFAULT_CLASS_MODEL_SHORTNAME']}' not found in active models.")
-                sys.exit(1)
-
     admin.init_app(app)
     db.init_app(app)
     filters.init_app(app)
@@ -227,4 +204,28 @@ def landing() -> str:
     def well_known(path: Path) -> Response:
         return send_from_directory(Path(app.instance_path) / '.well-known', path)
 
+    # run setup and checks that depend on the database (iff it is initialized)
+    # requires that db.init_app() has been called to ensure db is closed at end of context manager
+    with app.app_context():
+        db_conn = db.get_db()
+        try:
+            db_conn.execute("SELECT 1 FROM consumers LIMIT 1")
+            db_conn.execute("SELECT 1 FROM models LIMIT 1")
+            db_initialized = True
+        except sqlite3.OperationalError:
+            db_initialized = False
+
+        if db_initialized:
+            # load consumers from DB
+            admin.reload_consumers()
+
+            # validate that the default class model exists and is active
+            default_model_row = db_conn.execute(
+                "SELECT 1 FROM models WHERE active AND shortname = ?",
+                [app.config['DEFAULT_CLASS_MODEL_SHORTNAME']]
+            ).fetchone()
+            if not default_model_row:
+                app.logger.error(f"Default model shortname '{app.config['DEFAULT_CLASS_MODEL_SHORTNAME']}' not found in active models.")
+                sys.exit(1)
+
     return app