Bxio
1be8a45dde
All checks were successful
Testar e publicar imagem Docker / publish (push) Successful in 44s
65 lines
2.0 KiB
JavaScript
65 lines
2.0 KiB
JavaScript
function parseField(source, min, max) {
|
|
const values = new Set();
|
|
for (const part of source.split(",")) {
|
|
const match = /^(\*|\d+(?:-\d+)?)(?:\/(\d+))?$/.exec(part);
|
|
if (!match) throw new Error("Campo cron inválido.");
|
|
const step = Number(match[2] || 1);
|
|
if (step < 1) throw new Error("Passo cron inválido.");
|
|
const base = match[1],
|
|
range =
|
|
base === "*"
|
|
? [min, max]
|
|
: base.includes("-")
|
|
? base.split("-").map(Number)
|
|
: [Number(base), match[2] ? max : Number(base)];
|
|
if (range[0] < min || range[1] > max || range[0] > range[1])
|
|
throw new Error("Valor cron fora do intervalo.");
|
|
for (let i = range[0]; i <= range[1]; i += step) values.add(i);
|
|
}
|
|
return values;
|
|
}
|
|
export function compileCron(expression, timezone = "Europe/Lisbon") {
|
|
const fields = String(expression).trim().split(/\s+/);
|
|
if (fields.length === 5) fields.unshift("0");
|
|
if (fields.length !== 6) throw new Error("O cron precisa de 5 ou 6 campos.");
|
|
const limits = [
|
|
[0, 59],
|
|
[0, 59],
|
|
[0, 23],
|
|
[1, 31],
|
|
[1, 12],
|
|
[0, 7],
|
|
],
|
|
sets = fields.map((v, i) => parseField(v, ...limits[i]));
|
|
if (sets[5].has(7)) sets[5].add(0);
|
|
const formatter = new Intl.DateTimeFormat("en-GB", {
|
|
timeZone: timezone,
|
|
second: "2-digit",
|
|
minute: "2-digit",
|
|
hour: "2-digit",
|
|
day: "2-digit",
|
|
month: "2-digit",
|
|
weekday: "short",
|
|
hourCycle: "h23",
|
|
});
|
|
return (date) => {
|
|
const p = Object.fromEntries(
|
|
formatter.formatToParts(date).map((p) => [p.type, p.value]),
|
|
),
|
|
values = [
|
|
+p.second,
|
|
+p.minute,
|
|
+p.hour,
|
|
+p.day,
|
|
+p.month,
|
|
["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"].indexOf(p.weekday),
|
|
];
|
|
const day = sets[3].has(values[3]),
|
|
week = sets[5].has(values[5]);
|
|
return (
|
|
[0, 1, 2, 4].every((i) => sets[i].has(values[i])) &&
|
|
(fields[3] !== "*" && fields[5] !== "*" ? day || week : day && week)
|
|
);
|
|
};
|
|
}
|