refactor: tools folder inside pages

src/pages/tools/list/duplicate/service.ts

@@ -0,0 +1,81 @@
+export type SplitOperatorType = 'symbol' | 'regex';
+
+function interweave(array1: string[], array2: string[]) {
+  const result: string[] = [];
+  const maxLength = Math.max(array1.length, array2.length);
+
+  for (let i = 0; i < maxLength; i++) {
+    if (i < array1.length) result.push(array1[i]);
+    if (i < array2.length) result.push(array2[i]);
+  }
+  return result;
+}
+function duplicate(
+  input: string[],
+  concatenate: boolean,
+  reverse: boolean,
+  copy?: number
+) {
+  if (copy) {
+    if (copy > 0) {
+      let result: string[] = [];
+      let toAdd: string[] = [];
+      let WholePart: string[] = [];
+      let fractionalPart: string[] = [];
+      const whole = Math.floor(copy);
+      const fractional = copy - whole;
+      if (!reverse) {
+        WholePart = concatenate
+          ? Array(whole).fill(input).flat()
+          : Array(whole - 1)
+              .fill(input)
+              .flat();
+        fractionalPart = input.slice(0, Math.floor(input.length * fractional));
+        toAdd = WholePart.concat(fractionalPart);
+        result = concatenate
+          ? WholePart.concat(fractionalPart)
+          : interweave(input, toAdd);
+      } else {
+        WholePart = Array(whole - 1)
+          .fill(input)
+          .flat()
+          .reverse();
+        fractionalPart = input
+          .slice()
+          .reverse()
+          .slice(0, Math.floor(input.length * fractional));
+        toAdd = WholePart.concat(fractionalPart);
+        result = concatenate ? input.concat(toAdd) : interweave(input, toAdd);
+      }
+
+      return result;
+    }
+    throw new Error('Number of copies cannot be negative');
+  }
+  throw new Error('Number of copies must be a valid number');
+}
+
+export function duplicateList(
+  splitOperatorType: SplitOperatorType,
+  splitSeparator: string,
+  joinSeparator: string,
+  input: string,
+  concatenate: boolean,
+  reverse: boolean,
+  copy?: number
+): string {
+  let array: string[];
+  let result: string[];
+  switch (splitOperatorType) {
+    case 'symbol':
+      array = input.split(splitSeparator);
+      break;
+    case 'regex':
+      array = input
+        .split(new RegExp(splitSeparator))
+        .filter((item) => item !== '');
+      break;
+  }
+  result = duplicate(array, concatenate, reverse, copy);
+  return result.join(joinSeparator);
+}