refactor: reduce responsability of individual parts

2026-07-10 11:24:21 +02:00
parent f4425494f5
commit cb31d4e8af
7 changed files with 156 additions and 119 deletions
@@ -0,0 +1,66 @@
+
+import { CronType } from "@/enums";
+import CronExpressionParser from "cron-parser";
+
+export function parseCron(cron: string | null): { type: CronType, value: number } {
+    let value: RegExpMatchArray | null;
+    if (cron === null) {
+        return {
+            type: CronType.ONE_TIME,
+            value: 0
+        }
+    } else if ((value = /^0 (\d+) \* \* \*$/i.exec(cron)) !== null) {
+        return {
+            type: CronType.EVERY_DAY,
+            value: parseInt(value[1] ?? '')
+        }
+    } else if ((value = /^0 0 \* \* (\d+)$/i.exec(cron)) !== null) {
+        return {
+            type: CronType.EVERY_WEEK,
+            value: parseInt(value[1] ?? '')
+        }
+    } else if ((value = /^0 0 (\d+) \* \*$/i.exec(cron)) !== null) {
+        return {
+            type: CronType.EVERY_MONTH,
+            value: parseInt(value[1] ?? '')
+        }
+    } else if ((value = /^0 0 1 (\d+) \*$/i.exec(cron)) !== null) {
+        return {
+            type: CronType.EVERY_YEAR,
+            value: parseInt(value[1] ?? '')
+        }
+    } else {
+        return {
+            type: CronType.SPECIFIC,
+            value: 0
+        }
+    }
+}
+
+export function getCron(type: CronType, value: number, fallback: string): string | null {
+    switch(type) {
+        case CronType.EVERY_DAY:
+            return `0 ${value.toFixed(0)} * * *`;
+        case CronType.EVERY_WEEK:
+            return `0 0 * * ${value.toFixed(0)}`
+        case CronType.EVERY_MONTH:
+            return `0 0 ${value.toFixed(0)} * *`;
+        case CronType.EVERY_YEAR:
+            return `0 0 1 ${value.toFixed(0)} *`;
+        case CronType.SPECIFIC:
+            if (validCron(fallback)) {
+                return fallback;
+            }
+    }
+
+    return null;
+}
+
+export function validCron(cron: string): boolean {
+    try {
+        CronExpressionParser.parse(cron);
+        return true;
+    } catch {
+        return false;
+    }
+}