So ok, this must be pretty simple, but I just can't get it. Should I create some variables and store parts of code there? Or there's a smarter way? I mean conditions are similar and the logic is similar and I'm not quite sure where to start
const comparator = (a: TimeOff, b: TimeOff): number => {
if (order.sortBy === "status" && order.descending) {
if (a.state === "DECLINED") {
return -1;
}
if (a.state === "APPROVED") {
return 1;
}
return 0;
}
if (order.sortBy === "status" && !order.descending) {
if (a.state === "DECLINED") {
return 1;
}
if (a.state === "APPROVED") {
return -1;
}
return 0;
}
if (order.sortBy === "dateFrom" && order.descending) {
if (new Date(a.date_from) < new Date(b.date_from)) {
return -1;
}
if (new Date(a.date_from) > new Date(b.date_from)) {
return 1;
}
return 0;
}
if (order.sortBy === "dateFrom" && !order.descending) {
if (new Date(a.date_from) < new Date(b.date_from)) {
return 1;
}
if (new Date(a.date_from) > new Date(b.date_from)) {
return -1;
}
return 0;
}}
let sign;
if (order.sortBy === "status") {
// Sign will be -1, 0 or 1 (+ operator converts boolean to number, if false then 0, if true 1)
sign = +(a.state === "APPROVED") - +(a.state === "DECLINED");
}
if (order.sortBy === "dateFrom") {
sign = Math.sign(new Date(a.date_from) < new Date(b.date_from));
}
return sign * (~~order.descending || -1)
const sort = {
"status": {
"DECLINED": 1,
"APPROVED": -1
},
"dateFrom":{
"lessThan": -1,
"higherThan": 1
}
}
const comparator = (a, b) => {
const { sortBy, descending } = order
const offset = new Date(a.date_from) < new Date(b.date_from) ? "lessThan" : "higherThan"
const value = sort[sortBy][a.state] || sort[sortBy][offset] || 0
// multiplying by -1 changes the value from negtive to positive and vice versa
let result = descending ? value : value * -1
return result
}