let manager = (function(){
    let ingredients = {
        protein : 0,
        carbohydrate: 0,
        fat: 0,
        flavour: 0
    };
    let recipes ={
        apple: {carbohydrate: 1, flavour: 2},
        coke: {carbohydrate: 10, flavour: 20},
        burger: {carbohydrate: 5, fat: 7, flavour: 3},
        omelet: {protein: 5, fat: 1, flavour: 1},
        cheverme: {protein: 10,carbohydrate: 10, fat: 10, flavour: 10},
    }

    function restock(ingredient, quantity){
        ingredients[ingredient] += quantity;
        return 'Success';
    }

    function prepare(meal, quantity){
        let productsAreAvailable = checkProductAvailability();
        if(productsAreAvailable[0]){
            for (const ingredient in recipes[meal]) {
                ingredients[ingredient] -= recipes[meal][ingredient] * quantity;
            }

            return 'Success';
        } else{
            return `Error: not enough ${productsAreAvailable[1]} in stock`;
        }

        function checkProductAvailability(){
            for (const ingredient in recipes[meal]) {
                if(ingredients[ingredient] < recipes[meal][ingredient] * quantity){
                    return [false, ingredient];
                }
            }

            return [true];
        }
    }

    function report(){
        return `protein=${ingredients['protein']} carbohydrate=${ingredients['carbohydrate']} fat=${ingredients['fat']} flavour=${ingredients['flavour']}`;
    }

    return function cmdProcessor(instruction) {
        let instructionArgs = instruction.split(/ /);
        switch(instructionArgs[0]){
            case 'restock': restock(instructionArgs[1], Number(instructionArgs[2])); break;
            case 'prepare': prepare(instructionArgs[1], Number(instructionArgs[2])); break;
            case 'report': report(); break;
        }
    }
})();

// manager('restock flavour 50');
// manager('prepare coke 4');

// manager('restock carbohydrate 10');
// manager('restock flavour 10');
// manager('prepare apple 1');
// manager('restock fat 10');
// manager('prepare burger 1');
// manager('report');

// console.log(manager('prepare cheverme 1'));
// console.log(manager('restock protein 10'));
// console.log(manager('prepare cheverme 1'));
// console.log(manager('restock carbohydrate 10'));
// console.log(manager('prepare cheverme 1'));
// console.log(manager('restock fat 10'));
// console.log(manager('prepare cheverme 1'));
// console.log(manager('restock flavour 10'));
// console.log(manager('prepare cheverme 1'));
// console.log(manager('report'));


console.log(manager('restock protein 100'));
console.log(manager('restock carbohydrate 100'));
console.log(manager('restock fat 100'));
console.log(manager('restock flavour 100'));
console.log(manager('report'));
console.log(manager('prepare omelet 2'));
console.log(manager('report'));
console.log(manager('prepare omelet 1'));
console.log(manager('report'));