P!rates

function solve(input){

    let pirates = {};

        let command = input.shift().split('||');
            while(command[0] !== "Sail"){
            let town = command[0];
            let population = Number(command[1])
            let gold = Number(command[2]);

            // console.log(town)
                if(!pirates.hasOwnProperty(town)){
                    pirates[town] = {population, gold}
                } else {
                    pirates[town].population += population;
                    pirates[town].gold += gold
                }
                command = input.shift().split('||');
            }
        // console.log(pirates)
        for(let i = 0; i < input.length; i++){
            let [command, city, arg2, arg3] = input[i].split('=>');
            // console.log(command)
            switch(command){
                case "Plunder":
                    let people = Number(arg2);
                    let treasure = Number(arg3);
                    pirates[city].population -= people;
                    pirates[city].gold += treasure;
                    console.log((`${city} plundered! ${treasure} gold stolen, ${people} citizens killed.`))
                    if(pirates[city].population <= 0 || pirates[city].gold <= 0){
                        console.log(`${city} has been wiped off the map!`)
                        delete pirates[city];
                    }
                    break;
                case "Prosper":
                    let prosper = Number(arg2);
                    if(prosper >= 0){
                        pirates[city].gold += prosper;
                        console.log(`${prosper} gold added to the city treasury. ${city} now has ${pirates[city].gold} gold.`)
                    } else {
                        console.log(`Gold added cannot be a negative number!`)
                    }
                    break;
                case "End":
                    break;
            }
        }

    let sorted = Object.entries(pirates).sort((a,b) => b[1].gold - a[1].gold || a[0].localeCompare(b[0]));
    // console.log(sorted)

    if(sorted.length > 0){
        console.log(`Ahoy, Captain! There are ${sorted.length} wealthy settlements to go to:`);
        for(let kvp of sorted){
            console.log(`${kvp[0]} -> Population: ${kvp[1].population} citizens, Gold: ${kvp[1].gold} kg`);
        }
    } else {
        console.log(`Ahoy, Captain! All targets have been plundered and destroyed!`)
    }
}