Forum PHP.pl

function ICHFUNKCJA(expenses) { //sorki, nie pamietam jak oni to nazwali a ty skasowales zrodlo


    function getFirstSunday(year, month) {
            let firstDay = new Date(year, month - 1, 1);
            let firstSunday = new Date(firstDay);
            
            firstSunday.setDate(firstDay.getDate() + (7 - firstDay.getDay()) % 7);
            
            return firstSunday;
        }
        
        function calculateMedian(amount) {
            if (amount.length === 0) return null;
            
            amount.sort((a, b) => a - b);
            
            const middle = Math.floor(amount.length / 2);
            
            return amount.length % 2 !== 0 ? amount[middle] : (amount[middle - 1] + amount[middle]) / 2;
        }
        
            let allExpenses = [];
            
            for (let expense in expenses) {
                let [year, month] = expense.split('-').map(Number);
                let firstSunday = getFirstSunday(year, month);
                
                for (let day in expenses[expense]) {
                    let currentDate = new Date(year, month - 1, Number(day));
                    
                    if (currentDate <= firstSunday) {
                        for (let category in expenses[expense][day]) {
                            allExpenses.push(...expenses[expense][day][category]);
                        }
                    }
                }
            }
        
            return calculateMedian(allExpenses);
        
}