From 4f1a55b6790ac185b749781c18519633041ddedb Mon Sep 17 00:00:00 2001
From: "Karl O. Pinc kop@karlpinc.com" <kop@karlpinc.com>
Date: Wed, 13 May 2026 20:19:32 +0000
Subject: [PATCH] Create SIGHTINGS trigger

---
 db/schemas/lib/triggers/Makefile            |  3 +-
 db/schemas/lib/triggers/create/sightings.m4 | 50 +++++++++++++++++++++
 db/schemas/lib/triggers/drop/sightings.m4   | 23 ++++++++++
 3 files changed, 75 insertions(+), 1 deletion(-)
 create mode 100644 db/schemas/lib/triggers/create/sightings.m4
 create mode 100644 db/schemas/lib/triggers/drop/sightings.m4

diff --git a/db/schemas/lib/triggers/Makefile b/db/schemas/lib/triggers/Makefile
index e08767d..414c54a 100644
--- a/db/schemas/lib/triggers/Makefile
+++ b/db/schemas/lib/triggers/Makefile
@@ -33,7 +33,8 @@ ORDER := comm_ids \
          events \
          roles \
          arrivals \
-         aggressions
+         aggressions \
+         sightings
 
 DROP_EXISTING := true
 
diff --git a/db/schemas/lib/triggers/create/sightings.m4 b/db/schemas/lib/triggers/create/sightings.m4
new file mode 100644
index 0000000..813312a
--- /dev/null
+++ b/db/schemas/lib/triggers/create/sightings.m4
@@ -0,0 +1,50 @@
+dnl Copyright (C) 2015 The Meme Factory, Inc. http://www.karlpinc.com/
+dnl
+dnl   This program is free software: you can redistribute it and/or modify it
+dnl   under the terms of the GNU Affero General Public License as published by
+dnl   the Free Software Foundation, either version 3 of the License, or
+dnl   (at your option) any later version.
+dnl
+dnl   This program is distributed in the hope that it will be useful,
+dnl   but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl   GNU Affero General Public License for more details.
+dnl
+dnl   You should have received a copy of the GNU Affero General Public License
+dnl   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+dnl
+dnl Triggers for the sightings table
+dnl
+dnl Karl O. Pinc <kop@karlpinc.com>
+
+dnl m4 includes
+include(`copyright.m4')dnl
+include(`constants.m4')dnl
+include(`macros.m4')dnl
+
+
+RAISE INFO 'sightings_func';
+CREATE OR REPLACE FUNCTION sightings_func ()
+  RETURNS trigger
+  LANGUAGE plpgsql
+  sdb_function_set_search_path
+  AS $$
+  BEGIN
+  -- Function for sightings update trigger
+  --
+  -- AGPL_notice(`  --', `2025',
+                 `The Meme Factory, Inc., www.karlpinc.com')
+
+  -- Allowing the SightID to change makes life too complicated.
+  cannot_change(`SIGHTINGS', `SightID')
+
+  RETURN NULL;
+  END;
+$$;
+
+
+RAISE INFO 'sightings_trigger';
+CREATE TRIGGER sightings_trigger
+  AFTER UPDATE
+  ON sightings FOR EACH ROW
+  EXECUTE PROCEDURE sightings_func();
diff --git a/db/schemas/lib/triggers/drop/sightings.m4 b/db/schemas/lib/triggers/drop/sightings.m4
new file mode 100644
index 0000000..84663c8
--- /dev/null
+++ b/db/schemas/lib/triggers/drop/sightings.m4
@@ -0,0 +1,23 @@
+dnl Copyright (C) 2026 The Meme Factory, Inc.   http://www.karlpinc.com/
+dnl
+dnl   This program is free software: you can redistribute it and/or modify
+dnl   it under the terms of the GNU Affero General Public License as published by
+dnl   the Free Software Foundation, either version 3 of the License, or
+dnl   (at your option) any later version.
+dnl
+dnl   This program is distributed in the hope that it will be useful,
+dnl   but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl   GNU Affero General Public License for more details.
+dnl
+dnl   You should have received a copy of the GNU Affero General Public License
+dnl   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+dnl
+dnl Drop triggers for aggressions table
+dnl
+dnl Karl O. Pinc <kop@karlpinc.com>
+
+dnl m4 includes
+include(`copyright.m4')dnl
+
+DROP FUNCTION IF EXISTS sightings_func() CASCADE;
-- 
2.34.1