69 lines
1.8 KiB
TypeScript
69 lines
1.8 KiB
TypeScript
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import type { Ingredient } from '$lib/types';
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const UNITS = new Set([
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'g',
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'kg',
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'ml',
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'l',
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'cl',
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'dl',
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'TL',
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'EL',
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'Prise',
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'Pck.',
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'Pkg',
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'Becher',
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'Stk',
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'Stück',
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'Bund',
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'Tasse',
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'Dose'
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]);
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const FRACTION_MAP: Record<string, number> = {
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'1/2': 0.5,
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'1/3': 1 / 3,
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'2/3': 2 / 3,
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'1/4': 0.25,
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'3/4': 0.75
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};
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function parseQuantity(raw: string): number | null {
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const trimmed = raw.trim();
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if (FRACTION_MAP[trimmed] !== undefined) return FRACTION_MAP[trimmed];
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const rangeMatch = /^(\d+[.,]?\d*)\s*[-–]\s*\d+[.,]?\d*$/.exec(trimmed);
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if (rangeMatch) {
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return parseFloat(rangeMatch[1].replace(',', '.'));
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}
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const num = parseFloat(trimmed.replace(',', '.'));
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return Number.isFinite(num) ? num : null;
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}
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export function parseIngredient(raw: string, position = 0): Ingredient {
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const rawText = raw.trim();
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let working = rawText;
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let note: string | null = null;
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const noteMatch = /\(([^)]+)\)/.exec(working);
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if (noteMatch) {
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note = noteMatch[1].trim();
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working = (
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working.slice(0, noteMatch.index) + working.slice(noteMatch.index + noteMatch[0].length)
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).trim();
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}
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const qtyPattern = /^((?:\d+[.,]?\d*(?:\s*[-–]\s*\d+[.,]?\d*)?)|(?:\d+\/\d+))\s+(.+)$/;
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const qtyMatch = qtyPattern.exec(working);
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if (!qtyMatch) {
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return { position, quantity: null, unit: null, name: working, note, raw_text: rawText };
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}
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const quantity = parseQuantity(qtyMatch[1]);
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let rest = qtyMatch[2].trim();
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let unit: string | null = null;
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const firstTokenMatch = /^(\S+)\s+(.+)$/.exec(rest);
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if (firstTokenMatch && UNITS.has(firstTokenMatch[1])) {
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unit = firstTokenMatch[1];
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rest = firstTokenMatch[2].trim();
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}
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return { position, quantity, unit, name: rest, note, raw_text: rawText };
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}
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