From 9b3593bc0213162fa9204d65f6bd6275337424b2 Mon Sep 17 00:00:00 2001
From: Adam Wisher <37659188+mrwish7@users.noreply.github.com>
Date: Tue, 22 Jul 2025 17:51:07 +0100
Subject: [PATCH] Valid PS compare fix for PS under 3 chars

Fix to allow stations with a PS less than 3 characters to be IDed when PS validity checked
---
 server/tx_search.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/server/tx_search.js b/server/tx_search.js
index fce7019..d4c9b59 100644
--- a/server/tx_search.js
+++ b/server/tx_search.js
@@ -197,6 +197,9 @@ function validPsCompare(rdsPs, stationPs) {
        
     // Iterate through all tokens and check if any token yields at least three valid (non "_" ) matches.
     for (let token of psTokens) {
+        // If total non "_" length of token is less than 3, allow match based on that length instead
+        const tokenLength = token.replace(/_/g, "").length;
+        const minMatchLen = tokenLength > 2 ? 3 : tokenLength;
         // If the token's length does not match the standardized rdsPs length, skip this token.
         if (token.length !== standardizedRdsPs.length) continue;
         
@@ -208,7 +211,7 @@ function validPsCompare(rdsPs, stationPs) {
                 matchCount++;
             }
         }
-        if (matchCount >= 3) {
+        if (matchCount >= minMatchLen) {
             return true;
         }
     }
@@ -393,4 +396,4 @@ function deg2rad(deg) {
 
 module.exports = {
     fetchTx
-};
\ No newline at end of file
+};