Merge develop into master (squash): ticket #102 NIR harmonisation

- Backend: DTO NIR 15 car 2A/2B, validation format+clé, warning cohérence - BDD: nir_chiffre NOT NULL, migration pour bases existantes - Seeds: 02 nir_chiffre, 03 Marie 2A / Fatima 99 - Frontend: nir_utils, nir_text_field, formulaire pro, mock inscription AM Made-with: Cursor
2026-02-26 13:55:42 +01:00
parent b1a80f85c9
commit ca98821b3e
12 changed files with 355 additions and 38 deletions
@@ -0,0 +1,113 @@
+import 'package:flutter/services.dart';
+
+/// Utilitaires NIR (Numéro d'Inscription au Répertoire) – INSEE, 15 caractères.
+/// Corse : 2A (2A) et 2B (2B) au lieu de 19/20. Clé de contrôle : 97 - (NIR13 mod 97).
+
+/// Normalise le NIR : 15 caractères, sans espaces ni séparateurs. Corse conservée (2A/2B).
+String normalizeNir(String input) {
+  if (input.isEmpty) return '';
+  final cleaned = input.replaceAll(' ', '').replaceAll('-', '').replaceAll('/', '').toUpperCase();
+  final buf = StringBuffer();
+  int i = 0;
+  while (i < cleaned.length && buf.length < 15) {
+    final c = cleaned[i];
+    if (buf.length < 5) {
+      if (c.compareTo('0') >= 0 && c.compareTo('9') <= 0) buf.write(c);
+      i++;
+    } else if (buf.length == 5) {
+      if (c == '2' && i + 1 < cleaned.length && (cleaned[i + 1] == 'A' || cleaned[i + 1] == 'B')) {
+        buf.write('2');
+        buf.write(cleaned[i + 1]);
+        i += 2;
+      } else if ((c == 'A' || c == 'B')) {
+        buf.write('2');
+        buf.write(c);
+        i++;
+      } else if (c.compareTo('0') >= 0 && c.compareTo('9') <= 0) {
+        buf.write(c);
+        if (i + 1 < cleaned.length && cleaned[i + 1].compareTo('0') >= 0 && cleaned[i + 1].compareTo('9') <= 0) {
+          buf.write(cleaned[i + 1]);
+          i += 2;
+        } else {
+          i++;
+        }
+      } else {
+        i++;
+      }
+    } else {
+      if (c.compareTo('0') >= 0 && c.compareTo('9') <= 0) buf.write(c);
+      i++;
+    }
+  }
+  return buf.toString().length > 15 ? buf.toString().substring(0, 15) : buf.toString();
+}
+
+/// Retourne la chaîne brute à 15 caractères (chiffres + 2A ou 2B).
+String nirToRaw(String normalized) {
+  String s = normalized.replaceAll(' ', '').replaceAll('-', '').replaceAll('/', '');
+  if (s.length > 15) s = s.substring(0, 15);
+  return s;
+}
+
+/// Formate pour affichage : 1 12 34 56 789 012-34 ou 1 12 34 2A 789 012-34
+String formatNir(String raw) {
+  final r = nirToRaw(raw);
+  if (r.length < 15) return r;
+  final dept = r.substring(5, 7);
+  final isCorsica = dept == '2A' || dept == '2B';
+  if (isCorsica) {
+    return '${r.substring(0, 5)} ${r.substring(5, 7)} ${r.substring(7, 10)} ${r.substring(10, 13)}-${r.substring(13, 15)}';
+  }
+  return '${r.substring(0, 1)} ${r.substring(1, 3)} ${r.substring(3, 5)} ${r.substring(5, 7)} ${r.substring(7, 10)} ${r.substring(10, 13)}-${r.substring(13, 15)}';
+}
+
+/// Vérifie le format : 15 caractères, structure 1+2+2+2+3+3+2, département 2A/2B autorisé.
+bool _isFormatValid(String raw) {
+  if (raw.length != 15) return false;
+  final dept = raw.substring(5, 7);
+  final restDigits = raw.substring(0, 5) + (dept == '2A' ? '19' : dept == '2B' ? '18' : dept) + raw.substring(7, 15);
+  if (!RegExp(r'^[12]\d{12}\d{2}$').hasMatch(restDigits)) return false;
+  return RegExp(r'^[12]\d{4}(?:\d{2}|2A|2B)\d{6}$').hasMatch(raw);
+}
+
+/// Calcule la clé de contrôle (97 - (NIR13 mod 97)). Pour 2A→19, 2B→18.
+int _controlKey(String raw13) {
+  String n = raw13;
+  if (raw13.length >= 7 && (raw13.substring(5, 7) == '2A' || raw13.substring(5, 7) == '2B')) {
+    n = raw13.substring(0, 5) + (raw13.substring(5, 7) == '2A' ? '19' : '18') + raw13.substring(7);
+  }
+  final big = int.tryParse(n);
+  if (big == null) return -1;
+  return 97 - (big % 97);
+}
+
+/// Valide le NIR (format + clé). Retourne null si valide, message d'erreur sinon.
+String? validateNir(String? value) {
+  if (value == null || value.isEmpty) return 'NIR requis';
+  final raw = nirToRaw(value).toUpperCase();
+  if (raw.length != 15) return 'Le NIR doit contenir 15 caractères (chiffres, ou 2A/2B pour la Corse)';
+  if (!_isFormatValid(raw)) return 'Format NIR invalide (ex. 1 12 34 56 789 012-34 ou 2A pour la Corse)';
+  final key = _controlKey(raw.substring(0, 13));
+  final keyStr = key >= 0 && key <= 99 ? key.toString().padLeft(2, '0') : '';
+  final expectedKey = raw.substring(13, 15);
+  if (key < 0 || keyStr != expectedKey) return 'Clé de contrôle NIR invalide';
+  return null;
+}
+
+/// Formateur de saisie : affiche le NIR formaté (1 12 34 56 789 012-34) et limite à 15 caractères utiles.
+class NirInputFormatter extends TextInputFormatter {
+  @override
+  TextEditingValue formatEditUpdate(
+    TextEditingValue oldValue,
+    TextEditingValue newValue,
+  ) {
+    final raw = normalizeNir(newValue.text);
+    if (raw.isEmpty) return newValue;
+    final formatted = formatNir(raw);
+    final offset = formatted.length;
+    return TextEditingValue(
+      text: formatted,
+      selection: TextSelection.collapsed(offset: offset),
+    );
+  }
+}