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Refactor tax calculation in calcRegionalSellPrice function of FalukantService to convert exemptTypes Set to PostgreSQL array string for improved query performance and clarity.

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Torsten Schulz (local)
2025-12-20 14:54:32 +01:00
parent e3df88bea0
commit afe15dd4f5
1 changed files with 8 additions and 2 deletions
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10
backend/services/falukantService.js
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@@ -194,6 +194,12 @@ async function calcRegionalSellPrice(product, knowledgeFactor, regionId, worthPe
if (hasChancellor) return 0;
// Now compute cumulative tax but exclude regions whose regionType.labelTr is in exemptTypes
// Konvertiere exemptTypes Set zu einem PostgreSQL-Array-String
const exemptTypesArray = Array.from(exemptTypes);
const exemptTypesString = exemptTypesArray.length > 0
? `ARRAY[${exemptTypesArray.map(t => `'${t.replace(/'/g, "''")}'`).join(',')}]`
: `ARRAY[]::text[]`;
const rows = await sequelize.query(
`WITH RECURSIVE ancestors AS (
SELECT r.id, r.parent_id, r.tax_percent, rt.label_tr as region_type
@@ -206,9 +212,9 @@ async function calcRegionalSellPrice(product, knowledgeFactor, regionId, worthPe
JOIN falukant_type.region_type rt2 ON rt2.id = reg.region_type_id
JOIN ancestors a ON reg.id = a.parent_id
)
SELECT COALESCE(SUM(CASE WHEN :exempt_types::text[] && ARRAY[region_type] THEN 0 ELSE tax_percent END),0) AS total FROM ancestors;`,
SELECT COALESCE(SUM(CASE WHEN ${exemptTypesString} && ARRAY[region_type] THEN 0 ELSE tax_percent END),0) AS total FROM ancestors;`,
{
replacements: { id: regionId, exempt_types: Array.from(exemptTypes) },
replacements: { id: regionId },
type: sequelize.QueryTypes.SELECT
}
);