9 *Gladiator Inventory - JS Array Advanced

function solve(inputArr) {

    let inventoryArr = inputArr.shift();
    inventoryArr = inventoryArr.split(' ');

    for (let currentArr of inputArr) {
        let currentCommand = currentArr.split(' ');
        let weapon = currentCommand[1];

        if (currentCommand.includes('Buy')) {
            if (!inventoryArr.includes(weapon)) {
                inventoryArr.push(weapon);
            }
        } else if (currentCommand.includes('Trash')) {
            if (inventoryArr.includes(weapon)) {
                inventoryArr.splice(inventoryArr.indexOf(weapon), 1);
            }
        } else if (currentCommand.includes('Repair')) {
            if (inventoryArr.includes(weapon)) {
                inventoryArr.push(weapon);
                inventoryArr.splice(inventoryArr.indexOf(weapon), 1);
            }
        } else if (currentCommand.includes('Upgrade')) {
            let weaponUpgrade = weapon.replace('-',':');
            weapon = weapon.split('-');
            let upgrade = weapon[0];
            if (inventoryArr.includes(upgrade)) {
                inventoryArr.splice(inventoryArr.indexOf(upgrade)+1, 0, weaponUpgrade);
            }
        }
    }

    console.log(inventoryArr.join(' '));
}