Messages Manager

function solve(input){
    let num = Number(input.shift());
    // console.log(num);
    let messages = {};
    // let messagesSent = {};
    // let messagesReceived = {};

    for(let i = 0; i < input.length; i++){
        let arr = input[i].split('=');
        let command = arr[0];
        let user = arr[1];
        let arg2 = arr[2];
        let arg3 = arr[3];
        // console.log(command);
        switch(command){
            case "Add":
                if(!messages.hasOwnProperty(user)){
                    messages[user] = {
                       sent: Number(arg2),
                       received: Number(arg3)
                   }

                }
                break;
            case "Message":
                let sender = arr[1];
                let receiver = arr[2];

                if(messages.hasOwnProperty(sender) && messages.hasOwnProperty(receiver)){
                    messages[sender].sent++;
                    messages[receiver].received++;

                    if(messages[sender].sent + messages[sender].received >= num){
                        console.log(`${sender} reached the capacity!`);
                        delete (messages[sender]);
                    }
                    if(messages[receiver].sent + messages[receiver].received >= num){
                        console.log(`${receiver} reached the capacity!`);
                        delete (messages[receiver]);
                    }
                }

                break;
            case "Empty":
                if(messages.hasOwnProperty(user)){
                    delete messages[user];
                }
                if(user ==='All'){
                    messages = {};
                } else {
                    delete messages[user]
                }
                break;
            case "Statistics":
                break;
        }
    }
    let sorted = Object.entries(messages).sort((a,b) => b[1].received - a[1].received || a[0].localeCompare(b[0]));
console.log(`Users count: ${sorted.length}`);
for(let kvp of sorted){
    console.log(`${kvp[0]} - ${kvp[1].received + kvp[1].sent}`);
}
}