feat(tool): crontab generator

package-lock.json

@@ -15,6 +15,8 @@
         "@vueuse/head": "^0.7.5",
         "bip39": "^3.0.4",
         "buffer": "^6.0.3",
+        "cron-validator": "^1.3.1",
+        "cronstrue": "^2.2.0",
         "crypto-js": "^4.1.1",
         "date-fns": "^2.28.0",
         "lodash": "^4.17.21",
@@ -2383,6 +2385,16 @@
         "sha.js": "^2.4.8"
       }
     },
+    "node_modules/cron-validator": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/cron-validator/-/cron-validator-1.3.1.tgz",
+      "integrity": "sha512-C1HsxuPCY/5opR55G5/WNzyEGDWFVG+6GLrA+fW/sCTcP6A6NTjUP2AK7B8n2PyFs90kDG2qzwm8LMheADku6A=="
+    },
+    "node_modules/cronstrue": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/cronstrue/-/cronstrue-2.2.0.tgz",
+      "integrity": "sha512-oM/ftAvCNIdygVGGfYp8gxrVc81mDSA2mff0kvu6+ehrZhfYPzGHG8DVcFdrRVizjHnzWoFIlgEq6KTM/9lPBw=="
+    },
     "node_modules/cross-spawn": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
@@ -9925,6 +9937,16 @@
         "sha.js": "^2.4.8"
       }
     },
+    "cron-validator": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/cron-validator/-/cron-validator-1.3.1.tgz",
+      "integrity": "sha512-C1HsxuPCY/5opR55G5/WNzyEGDWFVG+6GLrA+fW/sCTcP6A6NTjUP2AK7B8n2PyFs90kDG2qzwm8LMheADku6A=="
+    },
+    "cronstrue": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/cronstrue/-/cronstrue-2.2.0.tgz",
+      "integrity": "sha512-oM/ftAvCNIdygVGGfYp8gxrVc81mDSA2mff0kvu6+ehrZhfYPzGHG8DVcFdrRVizjHnzWoFIlgEq6KTM/9lPBw=="
+    },
     "cross-spawn": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",

package.json

@@ -21,6 +21,8 @@
     "@vueuse/head": "^0.7.5",
     "bip39": "^3.0.4",
     "buffer": "^6.0.3",
+    "cron-validator": "^1.3.1",
+    "cronstrue": "^2.2.0",
     "crypto-js": "^4.1.1",
     "date-fns": "^2.28.0",
     "lodash": "^4.17.21",

src/plugins/naive.plugin.ts

@@ -45,9 +45,11 @@ import {
   NInputGroupLabel,
   NDivider,
   NStatistic,
+  NTable,
 } from 'naive-ui';
 
 const components = [
+  NTable,
   NStatistic,
   NDivider,
   NInputGroup,

src/tools/crontab-generator/crontab-generator.vue

@@ -0,0 +1,216 @@
+<template>
+  <n-card>
+    <n-form-item class="cron" :show-label="false" :feedback="cronValidation.message"
+      :validation-status="cronValidation.status">
+      <n-input v-model:value="cron" size="large" placeholder="* * * * *" />
+    </n-form-item>
+    <div class="cron-string">
+      {{ cronString }}
+    </div>
+
+    <n-divider />
+
+    <n-space justify="center">
+
+      <n-form :show-feedback="false" label-width="170" label-placement="left">
+        <n-form-item label="Verbose">
+          <n-switch v-model:value="cronstrueConfig.verbose" />
+        </n-form-item>
+        <n-form-item label="Use 24 hour time format">
+          <n-switch v-model:value="cronstrueConfig.use24HourTimeFormat" />
+        </n-form-item>
+        <n-form-item label="Days start at 0">
+          <n-switch v-model:value="cronstrueConfig.dayOfWeekStartIndexZero" />
+        </n-form-item>
+      </n-form>
+    </n-space>
+  </n-card>
+  <br>
+  <n-card>
+    <pre>
+┌──────────── [optional] seconds (0 - 59)
+| ┌────────── minute (0 - 59)
+| | ┌──────── hour (0 - 23)
+| | | ┌────── day of month (1 - 31)
+| | | | ┌──── month (1 - 12) OR jan,feb,mar,apr ...
+| | | | | ┌── day of week (0 - 6, sunday=0) OR sun,mon ...
+| | | | | |
+* * * * * * command</pre>
+
+
+    <n-table size="small">
+      <thead>
+        <tr>
+          <th class="text-left" scope="col">
+            Symbol
+          </th>
+          <th class="text-left" scope="col">
+            Meaning
+          </th>
+          <th class="text-left" scope="col">
+            Example
+          </th>
+          <th class="text-left" scope="col">
+            Equivalent
+          </th>
+        </tr>
+      </thead>
+      <tbody>
+        <tr>
+          <td>*</td>
+          <td>Any value</td>
+          <td>
+            <code>* * * *</code>
+          </td>
+          <td>Every minute</td>
+        </tr>
+        <tr>
+          <td>-</td>
+          <td>Range of values</td>
+          <td>
+            <code>1-10 * * *</code>
+          </td>
+          <td>Minutes 1 through 10</td>
+        </tr>
+        <tr>
+          <td>,</td>
+          <td>List of values</td>
+          <td>
+            <code>1,10 * * *</code>
+          </td>
+          <td>At minutes 1 and 10</td>
+        </tr>
+        <tr>
+          <td>/</td>
+          <td>Step values</td>
+          <td>
+            <code>*/10 * * *</code>
+          </td>
+          <td>Every 10 minutes</td>
+        </tr>
+        <tr>
+          <td>@yearly</td>
+          <td>Once every year at midnight of 1 January</td>
+          <td>
+            <code>@yearly</code>
+          </td>
+          <td>0 0 1 1 *</td>
+        </tr>
+        <tr>
+          <td>@annually</td>
+          <td>Same as @yearly</td>
+          <td>
+            <code>@annually</code>
+          </td>
+          <td>0 0 1 1 *</td>
+        </tr>
+        <tr>
+          <td>@monthly</td>
+          <td>Once a month at midnight on the first day</td>
+          <td>
+            <code>@monthly</code>
+          </td>
+          <td>0 0 1 * *</td>
+        </tr>
+        <tr>
+          <td>@weekly</td>
+          <td>Once a week at midnight on Sunday morning</td>
+          <td>
+            <code>@weekly</code>
+          </td>
+          <td>0 0 * * 0</td>
+        </tr>
+        <tr>
+          <td>@daily</td>
+          <td>Once a day at midnight</td>
+          <td>
+            <code>@daily</code>
+          </td>
+          <td>0 0 * * *</td>
+        </tr>
+        <tr>
+          <td>@midnight</td>
+          <td>Same as @daily</td>
+          <td>
+            <code>@midnight</code>
+          </td>
+          <td>0 0 * * *</td>
+        </tr>
+        <tr>
+          <td>@hourly</td>
+          <td>Once an hour at the beginning of the hour</td>
+          <td>
+            <code>@hourly</code>
+          </td>
+          <td>0 * * * *</td>
+        </tr>
+        <tr>
+          <td>@reboot</td>
+          <td>Run at startup</td>
+          <td />
+          <td />
+        </tr>
+      </tbody>
+    </n-table>
+
+  </n-card>
+</template>
+
+<script setup lang="ts">
+import cronstrue from 'cronstrue'
+import { isValidCron } from 'cron-validator'
+import { computed, reactive, ref } from 'vue';
+import { useValidation } from '@/composable/validation';
+
+
+function isCronValid(v: string) {
+  return isValidCron(v, { allowBlankDay: true, alias: true, seconds: true })
+}
+
+const cron = ref('40 * * * *')
+const cronstrueConfig = reactive({
+  verbose: true,
+  dayOfWeekStartIndexZero: true,
+  use24HourTimeFormat: true,
+  throwExceptionOnParseError: true
+})
+
+const cronString = computed(() => {
+  if (isCronValid(cron.value)) {
+    return cronstrue.toString(cron.value, cronstrueConfig)
+  }
+  return ' '
+})
+
+const cronValidation = useValidation({
+  source: cron,
+  rules: [{
+    validator: (value) => isCronValid(value),
+    message: 'This cron is invalid'
+  }]
+})
+</script>
+
+<style lang="less" scoped>
+.cron {
+  text-align: center;
+
+  margin: auto;
+  max-width: 400px;
+  display: block;
+
+  .n-input {
+    font-size: 30px;
+    font-family: monospace;
+    padding: 5px;
+
+  }
+}
+
+.cron-string {
+  text-align: center;
+  font-size: 22px;
+  opacity: 0.8;
+  margin: 5px 0 15px;
+}
+</style>

src/tools/crontab-generator/index.ts

@@ -0,0 +1,11 @@
+import { Alarm } from '@vicons/tabler';
+import type { ITool } from './../Tool';
+
+export const tool: ITool = {
+  name: 'Crontab generator',
+  path: '/crontab-generator',
+  description: 'Validate and generate crontab and get the human readable description of the cron schedule.',
+  keywords: ['crontab', 'generator', 'cronjob', 'cron', 'schedule', 'parse', 'expression', 'year', 'month', 'week', 'day', 'minute', 'second'],
+  component: () => import('./crontab-generator.vue'),
+  icon: Alarm,
+};

src/tools/index.ts

@@ -1,6 +1,7 @@
 import { LockOpen } from '@vicons/tabler';
 import type { ToolCategory } from './Tool';
 
+import { tool as crontabGenerator } from './crontab-generator';
 import { tool as textStatistics } from './text-statistics';
 import { tool as tokenGenerator } from './token-generator';
 import { tool as hashText } from './hash-text';
@@ -34,7 +35,7 @@ export const toolsByCategory: ToolCategory[] = [
   {
     name: 'Development',
     icon: LockOpen,
-    components: [gitMemo, randomPortGenerator],
+    components: [gitMemo, randomPortGenerator, crontabGenerator],
   },
   {
     name: 'Text',