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fix: use range overlap for duplicate SIE period check (BFL 4:1) (#163)

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* fix: use range overlap for duplicate period check (BFL 4:1 compliance)

The period duplicate check used exact-match on fiscal_year_start/end, missing
overlapping periods (e.g., partial-year file vs full-year import). Now uses
standard interval overlap test (start <= other_end AND end >= other_start).

Updated Swedish error messages to reflect overlap semantics.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: align JSDoc citation to BFL 4:1 for period overlap check

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jakob Wennberg
2026-04-02 12:21:42 +02:00
committed by GitHub
co-authored by Claude Opus 4.6
parent d23cb4c859
commit 8855ef1485
2 changed files with 8 additions and 5 deletions
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app/api/import/sie/parse/route.ts
+1 -1
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@@ -79,7 +79,7 @@ export async function POST(request: Request) {
if (periodDuplicate) {
return NextResponse.json({
error: 'duplicate_period',
message: `En SIE-import för perioden ${parsed.stats.fiscalYearStart} – ${parsed.stats.fiscalYearEnd} finns redan (importerad ${periodDuplicate.imported_at ? new Date(periodDuplicate.imported_at).toLocaleDateString('sv-SE') : 'okänt datum'})`,
message: `En SIE-import för ett överlappande räkenskapsår (${periodDuplicate.fiscal_year_start} – ${periodDuplicate.fiscal_year_end}) finns redan (importerad ${periodDuplicate.imported_at ? new Date(periodDuplicate.imported_at).toLocaleDateString('sv-SE') : 'okänt datum'})`,
importId: periodDuplicate.id,
}, { status: 409 })
}