first commit

namecreate/username_utils.py

@@ -0,0 +1,60 @@
+import re
+
+
+def normalize_for_username(value):
+    """Turkce karakterleri ASCII'ye cevirip username-safe hale getirir."""
+    tr_map = str.maketrans({
+        'c': 'c',
+        'C': 'c',
+        'g': 'g',
+        'G': 'g',
+        'i': 'i',
+        'I': 'i',
+        'o': 'o',
+        'O': 'o',
+        's': 's',
+        'S': 's',
+        'u': 'u',
+        'U': 'u',
+        'ç': 'c',
+        'Ç': 'c',
+        'ğ': 'g',
+        'Ğ': 'g',
+        'ı': 'i',
+        'İ': 'i',
+        'ö': 'o',
+        'Ö': 'o',
+        'ş': 's',
+        'Ş': 's',
+        'ü': 'u',
+        'Ü': 'u',
+    })
+    value = value.translate(tr_map).lower()
+    return re.sub(r'[^a-z0-9]+', '', value)
+
+
+def build_unique_username(first_name, last_name, birth_date, used_usernames, _force_suffix=None):
+    """
+    ad.soyadYY formatinda username uretir, cakisma olursa sonek ekler.
+    _force_suffix: verilirse bare base denenmez, bu sayidan itibaren baslar
+                   (regeneration ping-pong onlemek icin kullanilir).
+    """
+    first = normalize_for_username(first_name or '')
+    last = normalize_for_username(last_name or '')
+    yy = str(birth_date.year)[-2:]
+    base = f"{first}.{last}{yy}" if first and last else f"user{yy}"
+
+    if _force_suffix is not None:
+        # Yeniden uretim: bare base'i hic deneme, rastgele bir sonek ile basla
+        counter = _force_suffix
+        candidate = f"{base}{counter}"
+    else:
+        candidate = base
+        counter = 1
+
+    while candidate in used_usernames:
+        counter += 1
+        candidate = f"{base}{counter}"
+
+    used_usernames.add(candidate)
+    return candidate