From b9cd6845696ef85bb72cacb8ebf33ada8ee0bcca Mon Sep 17 00:00:00 2001
From: Chesterkxng <cgoita00@gmail.com>
Date: Sun, 12 Apr 2026 14:45:33 +0200
Subject: [PATCH] chore: service refactored - accept only ms timestamps -
 combined logic - date util parser usage

---
 .../time/convert-unix-to-date/service.ts      | 146 ++++++------------
 1 file changed, 50 insertions(+), 96 deletions(-)

diff --git a/src/pages/tools/time/convert-unix-to-date/service.ts b/src/pages/tools/time/convert-unix-to-date/service.ts
index 5ff2f18..8e5781b 100644
--- a/src/pages/tools/time/convert-unix-to-date/service.ts
+++ b/src/pages/tools/time/convert-unix-to-date/service.ts
@@ -1,25 +1,19 @@
 import { containsOnlyDigits } from '@utils/string';
-
-export function convertString(
-  input: string,
-  mode: string,
-  useLocalTime: boolean,
-  withLabel: boolean
-): string {
-  if (mode === 'unix-to-date') {
-    return convertUnixToDate(input, withLabel, useLocalTime);
-  } else {
-    return convertDateToUnix(input, useLocalTime);
-  }
-}
+import InitialValuesType from './types';
+import { parseDateInput } from '@utils/time';
 
 // Unix to Date
 function computeUnixToDate(input: string, useLocalTime: boolean): string {
   if (!containsOnlyDigits(input)) {
     return '';
   }
+
+  if (input.length > 10) return 'ms not supported, divide by 1000';
+
   const timestamp = parseInt(input, 10);
+
   const date = new Date(timestamp * 1000); // Convert from seconds to milliseconds
+  if (isNaN(date.getTime())) return '';
 
   if (useLocalTime) {
     const year = date.getFullYear();
@@ -34,102 +28,62 @@ function computeUnixToDate(input: string, useLocalTime: boolean): string {
   }
 }
 
-export function convertUnixToDate(
-  input: string,
-  withLabel: boolean,
-  useLocalTime: boolean
-): string {
-  const result: string[] = [];
-
-  const lines = input.split('\n');
-
-  lines.forEach((line) => {
-    const parts = line.split(' ');
-    const timestamp = parts[0];
-    const formattedDate = computeUnixToDate(timestamp, useLocalTime);
-
-    const label = !useLocalTime && withLabel ? ' UTC' : '';
-    result.push(formattedDate ? `${formattedDate}${label}` : '');
-  });
-
-  return result.join('\n');
-}
-
 // Date to Unix
 function computeDateToUnix(input: string, useLocalTime: boolean): string {
   try {
-    // Extract Data
-    const splitInput = input.split(' ');
-    const timeFrame = splitInput[0] + ' ' + splitInput[1];
-    const utcOffset = splitInput.length > 2 ? splitInput[2] : null;
+    const { dateTime, utcOffset } = parseDateInput(input);
+    const normalized = dateTime.includes(':')
+      ? dateTime
+      : `${dateTime}T00:00:00`;
 
-    // Convert into Unix (This Has The Local Offset)
-    const localUnixValue: number = Date.parse(timeFrame) / 1000;
-
-    // Unsuccesful Conversion
-    if (isNaN(localUnixValue)) {
-      return '';
-    }
-
-    // Case 1: Base Scenario (Assume Time with GMT +00)
-    if (!useLocalTime && !utcOffset) {
-      const processedDateTime = convertToGMTZero(localUnixValue);
-      return `${processedDateTime}`;
-    }
-
-    // Case 2: Time Given with Custom Offset
-    if (!useLocalTime && utcOffset) {
-      // Verify Offset (-12:00 to +14.00 in 15 Minute Intervals)
-      const regexMatch = utcOffset.match(/^[+-](0\d|1[0-4]):(00|15|30|45)$/);
-
-      // Invalid Regex
-      if (!regexMatch) {
-        return '';
-      }
-
-      // Variables to Be Processed
-      const hours = Number(regexMatch[1]);
-      const minutes = Number(regexMatch[2]) + hours * 60;
-      const offset = minutes * 60;
-
-      // Remove The Offset to The Time (Opposite of First Symbol - If Input Time is +08:00 Then We Need to Deduct by 8 Hours)
-      const processedDateTime = convertToGMTZero(localUnixValue) - offset;
-      return `${processedDateTime}`;
-    }
-
-    // Case 3: Local (Time Given is Local Time)
     if (useLocalTime) {
-      return `${localUnixValue}`;
+      const localOffsetMinutes = new Date().getTimezoneOffset();
+      const sign = localOffsetMinutes <= 0 ? '+' : '-';
+      const absMinutes = Math.abs(localOffsetMinutes);
+      const hh = String(Math.floor(absMinutes / 60)).padStart(2, '0');
+      const mm = String(absMinutes % 60).padStart(2, '0');
+      const unix = Date.parse(`${normalized}${sign}${hh}:${mm}`) / 1000;
+      return isNaN(unix) ? '' : `${unix}`;
     }
-  } catch (err) {
-    // Not Using Local Time (Either UTC is Given or Assume +00)
+
+    if (utcOffset) {
+      const valid = utcOffset.match(/^[+-](0\d|1[0-4]):(00|15|30|45)$|^Z$/);
+      if (!valid) return '';
+      const unix =
+        Date.parse(`${normalized}${utcOffset === 'Z' ? 'Z' : utcOffset}`) /
+        1000;
+      return isNaN(unix) ? '' : `${unix}`;
+    }
+
+    // Default: treat as UTC
+    const unix = Date.parse(`${normalized}Z`) / 1000;
+    return isNaN(unix) ? '' : `${unix}`;
+  } catch {
     return '';
   }
-  return '';
 }
 
-function convertToGMTZero(localUnixValue: number): number {
-  // Get A Reference Object
-  const refTimeDate = new Date();
-  const offsetMinutes = refTimeDate.getTimezoneOffset();
-
-  // Remove the Offset
-  const processedDateTime = localUnixValue - offsetMinutes * 60;
-  return processedDateTime;
-}
-
-function convertDateToUnix(input: string, useLocalTime: boolean): string {
-  // Empty Input
+export function UnixDateConverter(
+  input: string,
+  options: InitialValuesType
+): string {
   if (!input) return '';
 
-  const result: string[] = [];
+  const { mode, useLocalTime, withLabel } = options;
+
   const lines = input.split('\n');
 
-  // Process Input Lines
-  lines.forEach((line) => {
-    const formattedDate = computeDateToUnix(line, useLocalTime);
-    result.push(formattedDate);
-  });
+  if (mode === 'unix-to-date') {
+    const label = !useLocalTime && withLabel ? ' UTC' : '';
+    return lines
+      .map((line) => {
+        const formattedDate = computeUnixToDate(line.trim(), useLocalTime);
+        return formattedDate ? `${formattedDate}${label}` : '';
+      })
+      .join('\n');
+  }
 
-  return result.join('\n');
+  return lines
+    .map((line) => computeDateToUnix(line.trim(), useLocalTime))
+    .join('\n');
 }