Warehouse Machine

function coffeeStorage() {
    let textarea=JSON.parse(document.querySelector('textarea').value.split(','));
    let [reportOutput, inspectionOutput] = document.querySelectorAll('div p');

    let brands={};

    for (const brand of textarea) {
        let [command,brandName,coffeeName,expireDate,quantity]=brand.split(', '); // ???????

        if (command==='IN') {
            if (!brands[brandName]) {
                brands[brandName]={};
            }

            if (!brands[brandName][coffeeName]) { // ????
                brands[brandName][coffeeName]={expireDate,quantity:Number(quantity)};
            }

            if (brands[brandName][coffeeName].expireDate<=expireDate) {
                brands[brandName][coffeeName]={expireDate,quantity:Number(quantity)};
            }
        }else if (command==='OUT') {
            if (brands[brandName] &&
                brands[brandName][coffeeName] &&
                brands[brandName][coffeeName].expireDate>expireDate &&
                brands[brandName][coffeeName].quantity>=Number(quantity)) {

                brands[brandName][coffeeName].quantity-=Number(quantity);
            }
        }else if (command==='REPORT') {
            Object
            .entries(brands)
            .forEach(([brandName,coffeeName])=>{
                let arr=[];

                Object
                .entries(coffeeName)
                .map(([name,information])=>{
                    arr.push(`${name} - ${information.expireDate} - ${information.quantity}.`);
                });

                reportOutput.innerHTML += `${brandName}: ${arr.join(' ')}` + '<br/>';
            })
        }else if (command==='INSPECTION') {
            Object
            .entries(brands)
            .sort((a,b)=>a[0].localeCompare(b[0]))
            .forEach(([brandName,coffeeName])=>{
                let arr=[];

                Object
                .entries(coffeeName)
                .sort((a,b)=>b[1].quantity-a[1].quantity)
                .forEach(([name,information])=>{
                    arr.push(`${name} - ${information.expireDate} - ${information.quantity}.`);
                });

                inspectionOutput.innerHTML += `${brandName}: ${arr.join(' ')}` + '<br/>';
            })
        }
    }
}