fix: allow special characters in email (#5327)

Co-authored-by: crazywoola <427733928@qq.com>

api/libs/helper.py

@@ -25,7 +25,7 @@ class TimestampField(fields.Raw):
 
 def email(email):
     # Define a regex pattern for email addresses
-    pattern = r"^[\w\.-]+@([\w-]+\.)+[\w-]{2,}$"
+    pattern = r"^[\w\.!#$%&'*+\-/=?^_`{|}~]+@([\w-]+\.)+[\w-]{2,}$"
     # Check if the email matches the pattern
     if re.match(pattern, email) is not None:
         return email

api/tests/unit_tests/libs/test_email.py

@@ -0,0 +1,25 @@
+from libs.helper import email
+
+
+def test_email_with_valid_email():
+    assert email("test@example.com") == "test@example.com"
+    assert email("TEST12345@example.com") == "TEST12345@example.com"
+    assert email("test+test@example.com") == "test+test@example.com"
+    assert email("!#$%&'*+-/=?^_{|}~`@example.com") == "!#$%&'*+-/=?^_{|}~`@example.com"
+
+
+def test_email_with_invalid_email():
+    try:
+        email("invalid_email")
+    except ValueError as e:
+        assert str(e) == "invalid_email is not a valid email."
+
+    try:
+        email("@example.com")
+    except ValueError as e:
+        assert str(e) == "@example.com is not a valid email."
+
+    try:
+        email("()@example.com")
+    except ValueError as e:
+        assert str(e) == "()@example.com is not a valid email."