From b357fe78ee25efca2445c6a6456e407c0a222690 Mon Sep 17 00:00:00 2001
From: Tom Moor <tom.moor@gmail.com>
Date: Tue, 26 Dec 2023 23:12:09 -0500
Subject: [PATCH] Tweak search weights

---
 .../20231227040129-update-tsvector-trigger.js | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 server/migrations/20231227040129-update-tsvector-trigger.js

diff --git a/server/migrations/20231227040129-update-tsvector-trigger.js b/server/migrations/20231227040129-update-tsvector-trigger.js
new file mode 100644
index 000000000..461616070
--- /dev/null
+++ b/server/migrations/20231227040129-update-tsvector-trigger.js
@@ -0,0 +1,32 @@
+"use strict";
+
+module.exports = {
+  up: async (queryInterface) => {
+    const searchDocument = `
+    CREATE OR REPLACE FUNCTION documents_search_trigger() RETURNS trigger AS $$
+    begin
+      new."searchVector" :=
+        setweight(to_tsvector('english', coalesce(new.title, '')),'A') ||
+        setweight(to_tsvector('english', coalesce(array_to_string(new."previousTitles", ' , '),'')),'C') ||
+        setweight(to_tsvector('english', substring(coalesce(new.text, ''), 1, 1000000)), 'D');
+      return new;
+    end
+    $$ LANGUAGE plpgsql;
+        `;
+    await queryInterface.sequelize.query(searchDocument);
+  },
+  down: async (queryInterface) => {
+    const searchDocument = `
+    CREATE OR REPLACE FUNCTION documents_search_trigger() RETURNS trigger AS $$
+    begin
+      new."searchVector" :=
+        setweight(to_tsvector('english', coalesce(new.title, '')),'A') ||
+        setweight(to_tsvector('english', coalesce(array_to_string(new."previousTitles", ' , '),'')),'C') ||
+        setweight(to_tsvector('english', substring(coalesce(new.text, ''), 1, 1000000)), 'B');
+      return new;
+    end
+    $$ LANGUAGE plpgsql;
+        `;
+    await queryInterface.sequelize.query(searchDocument);
+  },
+};