import 'package:flutter/material.dart';
import 'package:p_tits_pas/models/dossier_unifie.dart';
import 'package:p_tits_pas/models/user.dart';
import 'package:p_tits_pas/utils/phone_utils.dart';
import 'package:p_tits_pas/widgets/admin/common/validation_detail_section.dart';

/// Valeurs affichées dans un [IdentityBlock] en lecture seule.
class IdentityValues {
  final String nom;
  final String prenom;
  final String telephone;
  final String email;
  final String adresse;
  final String codePostal;
  final String ville;

  const IdentityValues({
    required this.nom,
    required this.prenom,
    required this.telephone,
    required this.email,
    required this.adresse,
    required this.codePostal,
    required this.ville,
  });

  static String _fmt(String? s, String empty) {
    final t = (s ?? '').trim();
    return t.isEmpty ? empty : t;
  }

  static String _fmtPhone(String? s, String empty) {
    final tel = _fmt(s, empty);
    return tel != empty ? formatPhoneForDisplay(tel) : tel;
  }

  factory IdentityValues.fromUser(
    AppUser user, {
    String emptyLabel = 'Non défini',
  }) {
    return IdentityValues(
      nom: _fmt(user.nom, emptyLabel),
      prenom: _fmt(user.prenom, emptyLabel),
      telephone: _fmtPhone(user.telephone, emptyLabel),
      email: _fmt(user.email, emptyLabel),
      adresse: _fmt(user.adresse, emptyLabel),
      codePostal: _fmt(user.codePostal, emptyLabel),
      ville: _fmt(user.ville, emptyLabel),
    );
  }

  factory IdentityValues.fromParentDossier(
    ParentDossier parent, {
    String emptyLabel = 'Non défini',
  }) {
    return IdentityValues(
      nom: _fmt(parent.nom, emptyLabel),
      prenom: _fmt(parent.prenom, emptyLabel),
      telephone: _fmtPhone(parent.telephone, emptyLabel),
      email: _fmt(parent.email, emptyLabel),
      adresse: _fmt(parent.adresse, emptyLabel),
      codePostal: _fmt(parent.codePostal, emptyLabel),
      ville: _fmt(parent.ville, emptyLabel),
    );
  }
}

/// Bloc identité : Nom/Prénom, Tél/Email, Adresse, CP/Ville.
/// Grille partagée (création de compte, validation AM/famille, fiches admin, etc.).
class IdentityBlock extends StatelessWidget {  final String? title;

  final String? _nom;
  final String? _prenom;
  final String? _telephone;
  final String? _email;
  final String? _adresse;
  final String? _codePostal;
  final String? _ville;

  final TextEditingController? _nomCtrl;
  final TextEditingController? _prenomCtrl;
  final TextEditingController? _telCtrl;
  final TextEditingController? _emailCtrl;
  final TextEditingController? _adresseCtrl;
  final TextEditingController? _cpCtrl;
  final TextEditingController? _villeCtrl;

  static const List<int> rowLayout = [2, 2, 1, 2];
  static const Map<int, List<int>> rowFlex = {3: [2, 5]};

  const IdentityBlock.readOnly({
    super.key,
    this.title,
    required String nom,
    required String prenom,
    required String telephone,
    required String email,
    required String adresse,
    required String codePostal,
    required String ville,
  })  : _nom = nom,
        _prenom = prenom,
        _telephone = telephone,
        _email = email,
        _adresse = adresse,
        _codePostal = codePostal,
        _ville = ville,
        _nomCtrl = null,
        _prenomCtrl = null,
        _telCtrl = null,
        _emailCtrl = null,
        _adresseCtrl = null,
        _cpCtrl = null,
        _villeCtrl = null;

  const IdentityBlock.editable({
    super.key,
    this.title,
    required TextEditingController nomController,
    required TextEditingController prenomController,
    required TextEditingController telephoneController,
    required TextEditingController emailController,
    required TextEditingController adresseController,
    required TextEditingController codePostalController,
    required TextEditingController villeController,
  })  : _nom = null,
        _prenom = null,
        _telephone = null,
        _email = null,
        _adresse = null,
        _codePostal = null,
        _ville = null,
        _nomCtrl = nomController,
        _prenomCtrl = prenomController,
        _telCtrl = telephoneController,
        _emailCtrl = emailController,
        _adresseCtrl = adresseController,
        _cpCtrl = codePostalController,
        _villeCtrl = villeController;

  /// Lecture seule à partir de [IdentityValues].
  factory IdentityBlock.readOnlyValues({
    Key? key,
    String? title,
    required IdentityValues values,
  }) {
    return IdentityBlock.readOnly(
      key: key,
      title: title,
      nom: values.nom,
      prenom: values.prenom,
      telephone: values.telephone,
      email: values.email,
      adresse: values.adresse,
      codePostal: values.codePostal,
      ville: values.ville,
    );
  }

  /// Lecture seule depuis un [AppUser] (validation AM, fiche AM, etc.).
  factory IdentityBlock.readOnlyFromUser(
    AppUser user, {
    Key? key,
    String? title,
    String emptyLabel = 'Non défini',
  }) {
    return IdentityBlock.readOnlyValues(
      key: key,
      title: title,
      values: IdentityValues.fromUser(user, emptyLabel: emptyLabel),
    );
  }

  /// Lecture seule depuis un [ParentDossier] (validation famille).
  factory IdentityBlock.readOnlyFromParentDossier(
    ParentDossier parent, {
    Key? key,
    String? title,
    String emptyLabel = 'Non défini',
  }) {
    return IdentityBlock.readOnlyValues(
      key: key,
      title: title,
      values: IdentityValues.fromParentDossier(
        parent,
        emptyLabel: emptyLabel,
      ),
    );
  }

  bool get _isEditable => _nomCtrl != null;
  @override
  Widget build(BuildContext context) {
    if (_isEditable) {
      return ValidationFormGrid(
        title: title,
        rowLayout: rowLayout,
        rowFlex: rowFlex,
        fields: [
          ValidationLabeledField(
            label: 'Nom',
            field: ValidationEditableField(controller: _nomCtrl!),
          ),
          ValidationLabeledField(
            label: 'Prénom',
            field: ValidationEditableField(controller: _prenomCtrl!),
          ),
          ValidationLabeledField(
            label: 'Téléphone',
            field: ValidationEditableField(
              controller: _telCtrl!,
              keyboardType: TextInputType.phone,
              inputFormatters: frenchPhoneInputFormatters,
            ),
          ),
          ValidationLabeledField(
            label: 'Email',
            field: ValidationEditableField(
              controller: _emailCtrl!,
              keyboardType: TextInputType.emailAddress,
            ),
          ),
          ValidationLabeledField(
            label: 'Adresse (N° et Rue)',
            field: ValidationEditableField(controller: _adresseCtrl!),
          ),
          ValidationLabeledField(
            label: 'Code postal',
            field: ValidationEditableField(
              controller: _cpCtrl!,
              keyboardType: TextInputType.number,
            ),
          ),
          ValidationLabeledField(
            label: 'Ville',
            field: ValidationEditableField(controller: _villeCtrl!),
          ),
        ],
      );
    }

    return ValidationFormGrid(
      title: title,
      rowLayout: rowLayout,
      rowFlex: rowFlex,
      fields: [
        ValidationLabeledField(
          label: 'Nom',
          field: ValidationReadOnlyField(value: _nom!),
        ),
        ValidationLabeledField(
          label: 'Prénom',
          field: ValidationReadOnlyField(value: _prenom!),
        ),
        ValidationLabeledField(
          label: 'Téléphone',
          field: ValidationReadOnlyField(value: _telephone!),
        ),
        ValidationLabeledField(
          label: 'Email',
          field: ValidationReadOnlyField(value: _email!),
        ),
        ValidationLabeledField(
          label: 'Adresse (N° et Rue)',
          field: ValidationReadOnlyField(value: _adresse!),
        ),
        ValidationLabeledField(
          label: 'Code postal',
          field: ValidationReadOnlyField(value: _codePostal!),
        ),
        ValidationLabeledField(
          label: 'Ville',
          field: ValidationReadOnlyField(value: _ville!),
        ),
      ],
    );
  }
}