refactor: validators

server/src/api/validators/authValidator.ts

@@ -0,0 +1,64 @@
+import { check } from 'express-validator'
+
+import { isValidUsername, isValidEmail } from '@linux-odyssey/utils'
+import { User } from '@linux-odyssey/models'
+import { passwordPolicy } from '@linux-odyssey/constants'
+import { noError } from '../../middleware/validator.js'
+
+const checkUsername = () =>
+  check('username')
+    .notEmpty()
+    .isString()
+    .custom((username) => {
+      if (!isValidUsername(username)) {
+        throw new Error('Invalid username')
+      }
+      return true
+    })
+    .trim()
+
+const checkNewUsername = () =>
+  checkUsername().custom(async (username) => {
+    if (await User.exists({ username })) {
+      throw new Error('Username taken')
+    }
+    return true
+  })
+
+const checkEmail = () => check('email').notEmpty().isString().isEmail().trim()
+
+const checkNewEmail = () =>
+  checkEmail().custom(async (email) => {
+    if (await User.exists({ email })) {
+      throw new Error('Email taken')
+    }
+    return true
+  })
+
+const checkPassword = () =>
+  check('password').notEmpty().isStrongPassword(passwordPolicy)
+
+const checkLogin = () =>
+  check('username')
+    .isString()
+    .notEmpty()
+    .trim()
+    .custom((login) => {
+      if (!isValidUsername(login) && !isValidEmail(login)) {
+        throw new Error('Invalid login')
+      }
+      return true
+    })
+
+export const registerValidators = [
+  checkNewUsername(),
+  checkNewEmail(),
+  checkPassword(),
+  noError,
+]
+
+export const registerFromSessionValidators = [checkNewUsername(), noError]
+
+export const loginValidators = [checkLogin(), noError]
+
+export const checkUsernameValidators = [checkNewUsername(), noError]