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