feat(new tool): string obfuscator (#575)

5 files changed, 116 insertions, 1 deletions

diff --git a/src/tools/index.ts b/src/tools/index.ts
index 0cfc173..c5686a4 100644
--- a/src/tools/index.ts
+++ b/src/tools/index.ts
@@ -1,6 +1,7 @@
 import { tool as base64FileConverter } from './base64-file-converter';
 import { tool as base64StringConverter } from './base64-string-converter';
 import { tool as basicAuthGenerator } from './basic-auth-generator';
+import { tool as stringObfuscator } from './string-obfuscator';
 import { tool as emojiPicker } from './emoji-picker';
 import { tool as passwordStrengthAnalyser } from './password-strength-analyser';
 import { tool as yamlToToml } from './yaml-to-toml';
@@ -145,7 +146,7 @@ export const toolsByCategory: ToolCategory[] = [
   },
   {
     name: 'Text',
-    components: [loremIpsumGenerator, textStatistics, emojiPicker],
+    components: [loremIpsumGenerator, textStatistics, emojiPicker, stringObfuscator],
   },
   {
     name: 'Data',
diff --git a/src/tools/string-obfuscator/index.ts b/src/tools/string-obfuscator/index.ts
new file mode 100644
index 0000000..d5b4531
--- /dev/null
+++ b/src/tools/string-obfuscator/index.ts
@@ -0,0 +1,12 @@
+import { EyeOff } from '@vicons/tabler';
+import { defineTool } from '../tool';
+
+export const tool = defineTool({
+  name: 'String obfuscator',
+  path: '/string-obfuscator',
+  description: 'Obfuscate a string (like a secret, an IBAN, or a token) to make it shareable and identifiable without revealing its content.',
+  keywords: ['string', 'obfuscator', 'secret', 'token', 'hide', 'obscure', 'mask', 'masking'],
+  component: () => import('./string-obfuscator.vue'),
+  icon: EyeOff,
+  createdAt: new Date('2023-08-16'),
+});
diff --git a/src/tools/string-obfuscator/string-obfuscator.model.test.ts b/src/tools/string-obfuscator/string-obfuscator.model.test.ts
new file mode 100644
index 0000000..08d3fc2
--- /dev/null
+++ b/src/tools/string-obfuscator/string-obfuscator.model.test.ts
@@ -0,0 +1,20 @@
+import { describe, expect, it } from 'vitest';
+import { obfuscateString } from './string-obfuscator.model';
+
+describe('string-obfuscator model', () => {
+  describe('obfuscateString', () => {
+    it('the characters in the middle of the string are replaced by the replacement character', () => {
+      expect(obfuscateString('1234567890')).toBe('1234******');
+      expect(obfuscateString('1234567890', { replacementChar: 'x' })).toBe('1234xxxxxx');
+      expect(obfuscateString('1234567890', { keepFirst: 5 })).toBe('12345*****');
+      expect(obfuscateString('1234567890', { keepFirst: 0, keepLast: 5 })).toBe('*****67890');
+      expect(obfuscateString('1234567890', { keepFirst: 5, keepLast: 5 })).toBe('1234567890');
+      expect(obfuscateString('1234567890', { keepFirst: 2, keepLast: 2, replacementChar: 'x' })).toBe('12xxxxxx90');
+    });
+
+    it('by default, the spaces are kept, they can be removed with the keepSpace option', () => {
+      expect(obfuscateString('12345 67890')).toBe('1234* *****');
+      expect(obfuscateString('12345 67890', { keepSpace: false })).toBe('1234*******');
+    });
+  });
+});
diff --git a/src/tools/string-obfuscator/string-obfuscator.model.ts b/src/tools/string-obfuscator/string-obfuscator.model.ts
new file mode 100644
index 0000000..7f56dd1
--- /dev/null
+++ b/src/tools/string-obfuscator/string-obfuscator.model.ts
@@ -0,0 +1,35 @@
+import { get } from '@vueuse/core';
+import { type MaybeRef, computed } from 'vue';
+
+export { obfuscateString, useObfuscateString };
+
+function obfuscateString(
+  str: string,
+  { replacementChar = '*', keepFirst = 4, keepLast = 0, keepSpace = true }: { replacementChar?: string; keepFirst?: number; keepLast?: number; keepSpace?: boolean } = {}): string {
+  return str
+    .split('')
+    .map((char, index, array) => {
+      if (keepSpace && char === ' ') {
+        return char;
+      }
+
+      return (index < keepFirst || index >= array.length - keepLast) ? char : replacementChar;
+    })
+    .join('');
+}
+
+function useObfuscateString(
+  str: MaybeRef<string>,
+  config: { replacementChar?: MaybeRef<string>; keepFirst?: MaybeRef<number>; keepLast?: MaybeRef<number>; keepSpace?: MaybeRef<boolean> } = {},
+
+) {
+  return computed(() => obfuscateString(
+    get(str),
+    {
+      replacementChar: get(config.replacementChar),
+      keepFirst: get(config.keepFirst),
+      keepLast: get(config.keepLast),
+      keepSpace: get(config.keepSpace),
+    },
+  ));
+}
diff --git a/src/tools/string-obfuscator/string-obfuscator.vue b/src/tools/string-obfuscator/string-obfuscator.vue
new file mode 100644
index 0000000..0f11fca
--- /dev/null
+++ b/src/tools/string-obfuscator/string-obfuscator.vue
@@ -0,0 +1,47 @@
+<script setup lang="ts">
+import { useObfuscateString } from './string-obfuscator.model';
+import { useCopy } from '@/composable/copy';
+
+const str = ref('Lorem ipsum dolor sit amet');
+const keepFirst = ref(4);
+const keepLast = ref(4);
+const keepSpace = ref(true);
+
+const obfuscatedString = useObfuscateString(str, { keepFirst, keepLast, keepSpace });
+const { copy } = useCopy({ source: obfuscatedString });
+</script>
+
+<template>
+  <div>
+    <c-input-text v-model:value="str" raw-text placeholder="Enter string to obfuscate" label="String to obfuscate:" clearable multiline />
+
+    <div mt-4 flex gap-10px>
+      <div>
+        <div>Keep first:</div>
+        <n-input-number v-model:value="keepFirst" min="0" />
+      </div>
+
+      <div>
+        <div>Keep last:</div>
+        <n-input-number v-model:value="keepLast" min="0" />
+      </div>
+
+      <div>
+        <div mb-5px>
+          Keep&nbsp;spaces:
+        </div>
+        <n-switch v-model:value="keepSpace" />
+      </div>
+    </div>
+
+    <c-card v-if="obfuscatedString" mt-60px max-w-600px flex items-center gap-5px font-mono>
+      <div break-anywhere text-wrap>
+        {{ obfuscatedString }}
+      </div>
+
+      <c-button @click="copy">
+        <icon-mdi:content-copy />
+      </c-button>
+    </c-card>
+  </div>
+</template>