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21 lines
644 B
TypeScript
21 lines
644 B
TypeScript
import type { ScheduleTradeDirection } from '@edr/types';
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type YardLike = { country?: string | null };
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/** Derive booking/schedule trade direction from origin and destination yard countries. */
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export function deriveTradeDirection(
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originYard: YardLike,
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destinationYard: YardLike,
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): ScheduleTradeDirection {
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const originCountry = originYard.country?.trim().toLowerCase();
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const destinationCountry = destinationYard.country?.trim().toLowerCase();
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if (originCountry === 'djibouti') {
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return 'IMPORT';
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}
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if (destinationCountry === 'djibouti' && originCountry !== 'djibouti') {
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return 'EXPORT';
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}
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return 'DOMESTIC';
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}
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