flyer-crawler.projectium.com/utils/priceParser.ts

export const parsePrice = (price: string): number => {
    // Handles formats like "$3.99", "2 for $5", "$0.69"
    const match = price.match(/\$?(\d+\.?\d*)/);
    if (!match) return 0;
    
    const numericPrice = parseFloat(match[1]);

    const forMatch = price.match(/(\d+)\s+for/i);
    if(forMatch){
        const quantity = parseInt(forMatch[1], 10);
        if(quantity > 0){
            return numericPrice / quantity;
        }
    }
    
    return numericPrice;
};


/**
 * Parses a price string into an integer number of cents.
 * Handles formats like "$10.99", "99¢", "250".
 * @param price The price string to parse.
 * @returns The price in cents, or null if unparsable.
 */
export const parsePriceToCents = (price: string): number | null => {
    if (!price || typeof price !== 'string') return null;

    const cleanedPrice = price.trim();

    // Handle "X for Y" cases - these are not a single item price.
    if (cleanedPrice.match(/\d+\s+for/i)) {
        return null;
    }

    // Handle "99¢" format
    const centsMatch = cleanedPrice.match(/(\d+\.?\d*)\s?¢/);
    if (centsMatch && centsMatch[1]) {
        return Math.round(parseFloat(centsMatch[1]));
    }

    // Handle "$10.99" or "10.99" format
    const dollarsMatch = cleanedPrice.match(/\$?(\d+\.?\d*)/);
    if (dollarsMatch && dollarsMatch[1]) {
        const numericValue = parseFloat(dollarsMatch[1]);
        // If the original string did not contain a decimal, and it's a whole number > 50,
        // it's likely already in cents (e.g., "399" for "$3.99").
        if (!cleanedPrice.includes('.') && numericValue > 50 && numericValue % 1 === 0) {
            return numericValue;
        }
        return Math.round(numericValue * 100);
    }

    return null;
};