31 lines
1.2 KiB
TypeScript
31 lines
1.2 KiB
TypeScript
import { sql } from 'drizzle-orm';
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import { businesses, commercials, users } from './drizzle/schema.js';
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export const EARTH_RADIUS_KM = 6371; // Erdradius in Kilometern
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export const EARTH_RADIUS_MILES = 3959; // Erdradius in Meilen
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export function convertStringToNullUndefined(value) {
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// Konvertiert den Wert zu Kleinbuchstaben für eine case-insensitive Überprüfung
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const lowerCaseValue = typeof value === 'boolean' ? value : value?.toLowerCase();
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if (lowerCaseValue === 'null') {
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return null;
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} else if (lowerCaseValue === 'undefined') {
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return undefined;
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}
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// Gibt den Originalwert zurück, wenn es sich nicht um 'null' oder 'undefined' handelt
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return value;
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}
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export const getDistanceQuery = (schema: typeof businesses | typeof commercials | typeof users, lat: number, lon: number, unit: 'km' | 'miles' = 'miles') => {
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const radius = unit === 'km' ? EARTH_RADIUS_KM : EARTH_RADIUS_MILES;
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return sql`
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${radius} * 2 * ASIN(SQRT(
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POWER(SIN((${lat} - ${schema.latitude}) * PI() / 180 / 2), 2) +
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COS(${lat} * PI() / 180) * COS(${schema.latitude} * PI() / 180) *
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POWER(SIN((${lon} - ${schema.longitude}) * PI() / 180 / 2), 2)
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))
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`;
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};
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