01. World Tour FINAL EXAM JS

function solve(inputArr) { //100т.
    let str = inputArr.shift();


    for (const line of inputArr) {

        if (line === "Travel") {
            console.log(`Ready for world tour! Planned stops: ${str}`)
            break;

        } else {
            let tokens = line.split(":");

            if (line.includes("Add Stop")) { //Add Stop:{index}:{string} – insert the given string at that index only if the index is valid
                let idx = Number(tokens[1]);
                let newStop = tokens[2];
                // console.log(newStop)
                if (idx >= 0 && idx <= str.length - 1) { //ако е валиден индекса
                    str = str.slice(0, idx) + newStop + str.slice(idx);
                    //console.log(str);
                }
                console.log(str);


            } else if (line.includes("Remove Stop")) { //Remove Stop:{start_index}:{end_index} – remove the elements of the string from the starting
                let startIdx = Number(tokens[1]);
                let endIdx = Number(tokens[2]);
                if (startIdx >= 0 && startIdx <= str.length - 1 && endIdx >= 0 && endIdx <= str.length - 1) {
                    let strToRemove = str.substring(startIdx, endIdx + 1);
                    str = str.replace(strToRemove, "");

                }
                console.log(str)


            } else if (line.includes("Switch")) { //Switch:{old_string}:{new_string} – if the old string is in the initial string, replace it with the new one. (all occurrences)
                let oldStr = tokens[1];
                let newStr = tokens[2];
                if (str.includes(oldStr)) {
                    str = str.split(oldStr).join(newStr);
                    //console.log(str);
                }
                console.log(str); //или може би тук трябва да се принтне, а не горе в if-а
            }
        }
    }
}


solve(['Hawai::Cyprys-Greece', 'Add Stop:7:Rome', 'Remove Stop:11:16', 'Switch:Hawai:Bulgaria', 'Travel']);