From aca2e4758375e333d40c9dc3926b4e3c9d8c4368 Mon Sep 17 00:00:00 2001
From: Nguyen Ngo <ngodanguyen@macbook-local>
Date: Sat, 2 May 2026 08:37:27 -0400
Subject: [PATCH] 05/02/2026 Updates for iPad app: Phase 1 - fix token getting
 issue 2

---
 app/__init__.py     | 22 +++++++++++++++++-----
 app/api/__init__.py | 10 ++++++----
 2 files changed, 23 insertions(+), 9 deletions(-)

diff --git a/app/__init__.py b/app/__init__.py
index 390dd32..148e247 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -147,12 +147,24 @@ def create_app(config_name='default'):
     app.register_blueprint(customers.bp)
     app.register_blueprint(scheduled_reports.bp)
 
-    # ── Mobile API (Phase 7) ─────────────────────────────────────────────────
-    # The /api/v1 blueprint uses JWT Bearer tokens — no CSRF cookies needed.
-    # Exempt it from CSRFProtect before registering so POST /api/v1/* routes
-    # are never rejected for a missing CSRF token.
+    # ── Mobile API (Phase 7 / Phase A) ──────────────────────────────────────
+    # The /api/v1 blueprint group uses JWT Bearer tokens — no CSRF cookies needed.
+    #
+    # Flask-WTF's _is_exempt() checks whether the *leaf* blueprint object
+    # (e.g. api_auth, api_facilities) is in _exempt_blueprints.  Exempting
+    # the parent api_bp alone does NOT cascade to its sub-blueprints because
+    # request.blueprint returns the dotted child name ('api.api_auth'), and
+    # current_app.blueprints maps that to the child Blueprint object — which
+    # is never equal to the parent object in the exempt set.
+    #
+    # Fix: import every child blueprint object and exempt each one explicitly.
     from app.api import register_api, api_bp
-    csrf.exempt(api_bp)
+    from app.api.auth        import bp as _api_auth_bp
+    from app.api.facilities  import bp as _api_facilities_bp
+    from app.api.templates   import bp as _api_templates_bp
+    csrf.exempt(_api_auth_bp)
+    csrf.exempt(_api_facilities_bp)
+    csrf.exempt(_api_templates_bp)
     register_api(app)
 
     # ── Error handler: 413 Request Entity Too Large ───────────────────────
diff --git a/app/api/__init__.py b/app/api/__init__.py
index 935b47a..7ef01c6 100644
--- a/app/api/__init__.py
+++ b/app/api/__init__.py
@@ -45,17 +45,19 @@ def register_api(app):
     register api_bp on the Flask app.
 
     Called once from create_app() in app/__init__.py.
+
+    NOTE: CSRF exemption for each sub-blueprint is handled in app/__init__.py
+    before this function is called, because csrf.exempt() must receive the
+    child Blueprint object directly — exempting the parent api_bp does not
+    cascade to its sub-blueprints.
     """
-    # ── Phase 1 (Web): Auth ──────────────────────────────────────────────
+    # ── Phase 7 (Web): Auth ──────────────────────────────────────────────
     from app.api.auth import bp as auth_bp
     api_bp.register_blueprint(auth_bp)
 
     # ── Phase A (iPad): Reference data ──────────────────────────────────
     from app.api.facilities import bp as facilities_bp
     from app.api.templates  import bp as templates_bp
-    from app import csrf
-    csrf.exempt(facilities_bp)
-    csrf.exempt(templates_bp)
     api_bp.register_blueprint(facilities_bp)
     api_bp.register_blueprint(templates_bp)