fix: resolve MongoDB connection and port configuration issues

- Added dotenv configuration for environment variables
- Fixed MongoDB connection string loading
- Configured server port to 3005
- Updated cron jobs for expired messages

utils/usernameSuggestions.js

@@ -1,56 +1,56 @@
-const { validateUsername, USERNAME_MAX_LENGTH } = require('./usernameValidation')
-
-const escapeRegex = (value) => value.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
-
-const isUsernameTaken = async (UserModel, userName, excludeUserId) => {
-  const existing = await UserModel.findOne({
-    user_name: { $regex: new RegExp(`^${escapeRegex(userName)}$`, 'i') }
-  })
-
-  if (!existing) return false
-  if (excludeUserId && existing._id.toString() === excludeUserId) return false
-  return true
-}
-
-const buildCandidates = (base, attempt) => {
-  const random2 = () => String(Math.floor(Math.random() * 90 + 10))
-  const random3 = () => String(Math.floor(Math.random() * 900 + 100))
-  const random4 = () => String(Math.floor(Math.random() * 9000 + 1000))
-
-  const builders = [
-    () => `${base}_${random2()}`,
-    () => `${base}.${random2()}`,
-    () => `${base}${random3()}`,
-    () => `${base}-${random2()}`,
-    () => `${base}_${random3()}`,
-    () => `${base}${random4()}`,
-  ]
-
-  return builders[attempt % builders.length]()
-}
-
-const trimToMax = (value) =>
-  value.length > USERNAME_MAX_LENGTH ? value.slice(0, USERNAME_MAX_LENGTH) : value
-
-const generateUsernameSuggestions = async (UserModel, baseUserName, excludeUserId) => {
-  const base = trimToMax(baseUserName.trim().toLowerCase())
-  const suggestions = []
-  let attempt = 0
-
-  while (suggestions.length < 3 && attempt < 30) {
-    const candidate = trimToMax(buildCandidates(base, attempt))
-    attempt += 1
-
-    if (validateUsername(candidate)) continue
-    if (suggestions.includes(candidate)) continue
-    if (await isUsernameTaken(UserModel, candidate, excludeUserId)) continue
-
-    suggestions.push(candidate)
-  }
-
-  return suggestions
-}
-
-module.exports = {
-  generateUsernameSuggestions,
-}
+const { validateUsername, USERNAME_MAX_LENGTH } = require('./usernameValidation')
+
+const escapeRegex = (value) => value.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
+
+const isUsernameTaken = async (UserModel, userName, excludeUserId) => {
+  const existing = await UserModel.findOne({
+    user_name: { $regex: new RegExp(`^${escapeRegex(userName)}$`, 'i') }
+  })
+
+  if (!existing) return false
+  if (excludeUserId && existing._id.toString() === excludeUserId) return false
+  return true
+}
+
+const buildCandidates = (base, attempt) => {
+  const random2 = () => String(Math.floor(Math.random() * 90 + 10))
+  const random3 = () => String(Math.floor(Math.random() * 900 + 100))
+  const random4 = () => String(Math.floor(Math.random() * 9000 + 1000))
+
+  const builders = [
+    () => `${base}_${random2()}`,
+    () => `${base}.${random2()}`,
+    () => `${base}${random3()}`,
+    () => `${base}-${random2()}`,
+    () => `${base}_${random3()}`,
+    () => `${base}${random4()}`,
+  ]
+
+  return builders[attempt % builders.length]()
+}
+
+const trimToMax = (value) =>
+  value.length > USERNAME_MAX_LENGTH ? value.slice(0, USERNAME_MAX_LENGTH) : value
+
+const generateUsernameSuggestions = async (UserModel, baseUserName, excludeUserId) => {
+  const base = trimToMax(baseUserName.trim().toLowerCase())
+  const suggestions = []
+  let attempt = 0
+
+  while (suggestions.length < 3 && attempt < 30) {
+    const candidate = trimToMax(buildCandidates(base, attempt))
+    attempt += 1
+
+    if (validateUsername(candidate)) continue
+    if (suggestions.includes(candidate)) continue
+    if (await isUsernameTaken(UserModel, candidate, excludeUserId)) continue
+
+    suggestions.push(candidate)
+  }
+
+  return suggestions
+}
+
+module.exports = {
+  generateUsernameSuggestions,
+}