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

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),
+    },
+  ));
+}