02. Armies Associative Arrays - More Exercises

function armies(params) {
    let armies = new Map();
    for (command of params) {
        if (command.includes('arrives')) {
            let nameLeader = command.substr(0, (command.length - 8));
            if (!armies.has(nameLeader)) {
                armies.set(nameLeader, []);
            }
        } else if (command.includes(': ')) {
            let [nameLeader, armyAndCount] = command.split(': ');
            let [army, count] = armyAndCount.split(', ');
            count = Number(count);
            if (armies.has(nameLeader)) {
                let currentArmy = armies.get(nameLeader);
                currentArmy.push([`${army} - ${count}`])
                armies.set(nameLeader, currentArmy);
            }
        } else if (command.includes(' defeated')) {
            let nameLeader = command.substr(0, (command.length - 9));
            if (armies.has(nameLeader)) {
                armies.delete(nameLeader);
            }
        } else if (command.includes(' + ')) {
            let [newArmy, newCount] = command.split(' + ');
            newCount = Number(newCount);
            let leaders = [...(armies.keys())];
            for (let nameLeader of leaders) {
                if (armies.has(nameLeader)) {
                    let currentArmy = armies.get(nameLeader);
                    for (let armyAndCount in currentArmy) {
                        let [army, count] = String(currentArmy[armyAndCount]).split(' - ');
                        count = Number(count);
                        if (army === newArmy) {
                            count += newCount;
                            currentArmy.splice(armyAndCount, 1, [`${army} - ${count}`]);
                            armies.set(nameLeader, currentArmy);
                            break;
                        }
                    }
                }
            }

        }
    }
    let result = [...(armies.entries())];
    result.sort(sortLeaders);

    function sortLeaders(a, b) {
        let powerA = 0;
        let powerB = 0;
        for (let itema of a[1]) {
            powerA += Number(String(itema).split(' - ')[1]);
        }
        for (let itemb of b[1]) {
            powerB += Number(String(itemb).split(' - ')[1]);
        }
        if (powerA > powerB) {
            return -1;
        } else if (powerA < powerB) {
            return 1;
        }
    }

    for (let lieder of result) {
        let armyLieder = lieder[1];
        armyLieder.sort(armySort);

        function armySort(a, b) {
            let powerA = Number(String(a).split(' - ')[1]);
            let powerB = Number(String(b).split(' - ')[1]);
            if (powerA > powerB) {
                return -1;
            } else if (powerA < powerB) {
                return 1;
            }
        }

    }

    for (let lieder of result) {
        let power = 0;
        for (let item of lieder[1]) {
            for (let army of item) {
                power += Number(String(army).split(' - ')[1]);
            }
        }
        console.log(`${lieder[0]}: ${power}`);
        for (let item of lieder[1]) {
            console.log(`>>> ${item}`);
        }
    }
}