"""
Formulaires WTForms pour la GMAO
"""
from flask_wtf import FlaskForm
from wtforms import (StringField, TextAreaField, SelectField, IntegerField,
                      FloatField, DateField, BooleanField, PasswordField,
                      FieldList, FormField)
from wtforms.validators import (DataRequired, Optional, Email, Length,
                                 NumberRange, ValidationError)


def coerce_int_or_none(value):
    """Convertit en int ou retourne None pour les chaînes vides."""
    if value is None or value == '' or value == 'None':
        return None
    try:
        return int(value)
    except (ValueError, TypeError):
        return None


# ─── Authentification ──────────────────────────────────────────

class LoginForm(FlaskForm):
    username = StringField("Nom d'utilisateur", validators=[DataRequired()])
    password = PasswordField("Mot de passe", validators=[DataRequired()])


class UserForm(FlaskForm):
    username = StringField("Nom d'utilisateur", validators=[DataRequired(), Length(3, 80)])
    email = StringField("Email", validators=[DataRequired(), Email()])
    full_name = StringField("Nom complet", validators=[DataRequired()])
    password = PasswordField("Mot de passe", validators=[Optional(), Length(min=12)])
    role = SelectField("Rôle", choices=[
        ("admin", "Administrateur"),
        ("responsable_gmao", "Responsable GMAO"),
        ("technicien", "Technicien"),
        ("assistant_prevention", "Assistant de prévention"),
        ("demandeur", "Demandeur"),
        ("lecture", "Lecture seule"),
    ])
    is_active = BooleanField("Actif")


class PasswordForm(FlaskForm):
    current_password = PasswordField("Mot de passe actuel", validators=[DataRequired()])
    new_password = PasswordField("Nouveau mot de passe", validators=[
        DataRequired(), Length(min=12, message="Le mot de passe doit contenir au moins 12 caractères")
    ])
    confirm_password = PasswordField("Confirmer le nouveau mot de passe", validators=[
        DataRequired()
    ])
    
    def validate_confirm_password(form, field):
        if field.data != form.new_password.data:
            raise ValidationError("Les mots de passe ne correspondent pas")


# ─── Bâtiments & Salles ────────────────────────────────────────

class BuildingForm(FlaskForm):
    name = StringField("Nom du bâtiment", validators=[DataRequired()])
    description = TextAreaField("Description")


class RoomForm(FlaskForm):
    name = StringField("Nom de la salle", validators=[DataRequired()])
    code = StringField("Code", validators=[Optional()])
    floor = IntegerField("Étage", validators=[Optional()], default=0)
    building_id = SelectField("Bâtiment", coerce=int, validators=[DataRequired()])
    room_type_id = SelectField("Type de salle", coerce=coerce_int_or_none, validators=[Optional()])


class RoomTypeForm(FlaskForm):
    name = StringField("Nom du type", validators=[DataRequired()])
    description = TextAreaField("Description")
    is_teaching = BooleanField("Type enseignement (avec planning)", default=False)
    color = SelectField("Couleur", choices=[
        ("primary", "Bleu"),
        ("secondary", "Gris"),
        ("success", "Vert"),
        ("danger", "Rouge"),
        ("warning", "Orange"),
        ("info", "Cyan"),
        ("dark", "Noir"),
    ], default="primary")


# ─── Équipements ────────────────────────────────────────────────

class EquipmentCategoryForm(FlaskForm):
    name = StringField("Nom de la catégorie", validators=[DataRequired()])
    description = TextAreaField("Description")


class EquipmentForm(FlaskForm):
    name = StringField("Nom de l'équipement", validators=[DataRequired()])
    code = StringField("Code interne", validators=[Optional()])
    description = TextAreaField("Description")
    status = SelectField("Statut", choices=[
        ("en_service", "En service"),
        ("hors_service", "Hors service"),
        ("en_reparation", "En réparation"),
        ("remplace", "Remplacé"),
    ])
    location = StringField("Emplacement", validators=[Optional()])
    room_id = SelectField("Salle", coerce=coerce_int_or_none, validators=[Optional()])
    category_id = SelectField("Catégorie", coerce=coerce_int_or_none, validators=[Optional()])


# ─── Interventions ────────────────────────────────────────────────

class InterventionForm(FlaskForm):
    title = StringField("Titre", validators=[DataRequired()])
    description = TextAreaField("Description")
    intervention_type = SelectField("Type", choices=[
        ("curatif", "Curatif"),
        ("preventif", "Préventif"),
        ("amelioratif", "Amélioratif"),
        ("administratif", "Administratif"),
        ("formation", "Formation"),
    ])
    priority = SelectField("Priorité", choices=[
        ("basse", "Basse"),
        ("normale", "Normale"),
        ("haute", "Haute"),
        ("urgente", "Urgente"),
    ])
    status = SelectField("Statut", choices=[
        ("en_attente", "En attente"),
        ("en_cours", "En cours"),
        ("terminee", "Terminée"),
        ("annulee", "Annulée"),
    ])
    lot_id = SelectField("Lot", coerce=coerce_int_or_none, validators=[Optional()])
    equipment_id = SelectField("Équipement", coerce=coerce_int_or_none, validators=[Optional()])
    room_id = SelectField("Salle", coerce=coerce_int_or_none, validators=[Optional()])
    assigned_to = SelectField("Technicien assigné", coerce=coerce_int_or_none, validators=[Optional()])
    scheduled_date = DateField("Date prévue", validators=[Optional()])
    estimated_duration = FloatField("Durée estimée (heures)", validators=[Optional()])
    requester_name = StringField("Demandeur", validators=[Optional()])


# ─── Lots ────────────────────────────────────────────────────────

class LotForm(FlaskForm):
    name = StringField("Nom du lot", validators=[DataRequired()])
    description = TextAreaField("Description")
    category = StringField("Catégorie", validators=[Optional()])
    company_id = SelectField("Entreprise", coerce=coerce_int_or_none, validators=[Optional()])
    service_id = SelectField("Service", coerce=coerce_int_or_none, validators=[Optional()])
    is_active = BooleanField("Actif", default=True)


# ─── Entreprises ────────────────────────────────────────────────

class CompanyForm(FlaskForm):
    name = StringField("Nom de l'entreprise", validators=[DataRequired()])
    contact_name = StringField("Nom du contact", validators=[Optional()])
    contact_email = StringField("Email du contact", validators=[Optional(), Email()])
    contact_phone = StringField("Téléphone du contact", validators=[Optional()])
    address = TextAreaField("Adresse")
    is_active = BooleanField("Active", default=True)


# ─── Collège ────────────────────────────────────────────────

class CollegeForm(FlaskForm):
    name = StringField("Nom du collège", validators=[DataRequired()])
    code = StringField("Code UAI", validators=[Optional()])
    address = StringField("Adresse", validators=[Optional()])
    city = StringField("Ville", validators=[Optional()])
    postal_code = StringField("Code postal", validators=[Optional()])
    phone = StringField("Téléphone", validators=[Optional()])
    email = StringField("Email", validators=[Optional(), Email()])
    principal_name = StringField("Nom du principal", validators=[Optional()])