chore: added trigger to backup integrations table content on change

Signed-off-by: Uroš Marolt <uros@marolt.me>

Author: themarolt

backend/src/database/migrations/U1762508771__autobackup-integrations.sql

@@ -0,0 +1,29 @@
+create table "integrationsHistory" as
+select *
+from "integrations"
+where 1 = 2;
+
+alter table "integrationsHistory"
+    add column "historyCreatedAt" timestamptz not null default now();
+
+create index if not exists ix_integration_history_integration_id on "integrationsHistory" ("id");
+
+create function log_integrations_changes()
+    returns trigger as
+$$
+begin
+    insert into "integrationsHistory" select old.*;
+
+    if (tg_op = 'DELETE') then
+        return old;
+    else
+        return new;
+    end if;
+end;
+$$ language plpgsql;
+
+create trigger integrations_audit_trigger
+    after update or delete
+    on integrations
+    for each row
+execute function log_integrations_changes();