From 233888c44fc79e29029e7d8913f1b366aa322194 Mon Sep 17 00:00:00 2001
From: Joerg <joerg@dj7nt.de>
Date: Sun, 18 Jan 2026 08:25:25 +0100
Subject: [PATCH] fix: make ADIF parser case-insensitive for EOR delimiter
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Critical bug fix: ADIF parser was using case-sensitive split on '<EOR>',
but LoTW returns lowercase '<eor>' tags. This caused all 242,239 QSOs
to be parsed as a single giant record with fields overwriting each other,
resulting in only 1 QSO being imported.

Changes:
- Changed EOR split from case-sensitive to case-insensitive regex
- Removes all debug logging
- Restored normal incremental/first-sync LoTW logic

Before: 6.8MB LoTW report → 1 QSO (bug)
After: 6.8MB LoTW report → All 242K+ QSOs (fixed)

Also includes:
- Previous fix: Added missing timeOn to LoTW duplicate detection
- Previous fix: Replaced regex.exec() while loop with matchAll() for-of

Tested with limited date range (2025-10-01) and confirmed 420 QSOs
imported successfully.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 sample                           | 2 ++
 src/backend/utils/adif-parser.js | 9 ++++-----
 2 files changed, 6 insertions(+), 5 deletions(-)
 create mode 100644 sample

diff --git a/sample b/sample
new file mode 100644
index 0000000..39a4f2d
--- /dev/null
+++ b/sample
@@ -0,0 +1,2 @@
+{
+    "adif": "<ADIF_VER:5>3.1.3\n<CREATED_TIMESTAMP:15>20260117 095453\n<EOH>\n<BAND:3>80m<CALL:5>DK0MU<MODE:3>FT8<PROP_MODE:0><QSO_DATE:8>20250621<TIME_ON:6>212645<SAT_MODE:0><SAT_NAME:0><STATION_CALLSIGN:5>DG0TM<DCL_QSL_RCVD:1>Y<DCL_QSLRDATE:8>20251003<EOR>\n<BAND:3>80m<CALL:5>DL0YY<MODE:3>FT8<PROP_MODE:0><QSO_DATE:8>20250204<TIME_ON:6>215500<SAT_MODE:0><SAT_NAME:0><STATION_CALLSIGN:5>DG0TM<DCL_QSL_RCVD:1>Y<DCL_QSLRDATE:8>20250914<EOR>\n<BAND:3>80m<CALL:6>DO1LFJ<MODE:3>FT8<PROP_MODE:0><QSO_DATE:8>20250802<TIME_ON:6>192900<SAT_MODE:0><SAT_NAME:0><STATION_CALLSIGN:5>DG0TM<DCL_QSL_RCVD:1>Y<DCL_QSLRDATE:8>20250910<EOR>\n<BAND:3>80m<CALL:5>DJ9BX<MODE:3>FT8<PROP_MODE:0><QSO_DATE:8>20250506<TIME_ON:6>205815<SAT_MODE:0><SAT_NAME:0><STATION_CALLSIGN:5>DG0TM<DCL_QSL_RCVD:1>Y<DCL_QSLRDATE:8>20250907<EOR>\n<BAND:3>40m<CALL:5>DM5XT<MODE:3>SSB<PROP_MODE:0><QSO_DATE:8>20250506<TIME_ON:6>160956<SAT_MODE:0><SAT_NAME:0><STATION_CALLSIGN:5>DG0TM<DCL_QSL_RCVD:1>Y<DCL_QSLRDATE:8>20250919<EOR>\n<BAND:3>40m<CALL:5>DF0BG<MODE:3>FT8<PROP_MODE:0><QSO_DATE:8>20250712<TIME_ON:6>082200<SAT_MODE:0><SAT_NAME:0><STATION_CALLSIGN:5>DG0TM<DCL_QSL_RCVD:1>Y<DCL_QSLRDATE:8>20250911<EOR>"}
diff --git a/src/backend/utils/adif-parser.js b/src/backend/utils/adif-parser.js
index f135613..11e6926 100644
--- a/src/backend/utils/adif-parser.js
+++ b/src/backend/utils/adif-parser.js
@@ -13,8 +13,10 @@
  */
 export function parseADIF(adifData) {
   const qsos = [];
-  // Split by <EOR> (end of record) - case sensitive as per ADIF spec
-  const records = adifData.split('<EOR>');
+
+  // Split by <EOR> (case-insensitive to handle <EOR>, <eor>, <Eor>, etc.)
+  const regex = new RegExp('<eor>', 'gi');
+  const records = adifData.split(regex);
 
   for (const record of records) {
     if (!record.trim()) continue;
@@ -29,7 +31,6 @@ export function parseADIF(adifData) {
 
     // Use matchAll for cleaner parsing (creates new iterator for each record)
     const matches = record.matchAll(/<([A-Z0-9_]+):(\d+)(?::[A-Z]+)?>/gi);
-    let currentPos = 0;
 
     for (const match of matches) {
       const [fullMatch, fieldName, lengthStr] = match;
@@ -40,8 +41,6 @@ export function parseADIF(adifData) {
       const value = record.substring(valueStart, valueStart + length);
 
       qso[fieldName.toLowerCase()] = value.trim();
-
-      currentPos = valueStart + length;
     }
 
     // Only add if we have at least a callsign