from flask import flash
from flask_wtf import FlaskForm
from markupsafe import Markup
import requests, re
from wtforms import StringField, SubmitField, TextAreaField, SelectField, HiddenField
from wtforms.fields.html5 import EmailField, DateField
from flask_wtf.file import FileField, FileAllowed
from wtforms.validators import ValidationError, DataRequired, Email
from app.entreprises.models import Entreprise, EntrepriseContact
from app.models import Identite
from app.auth.models import User
from app.scodoc import sco_etud
from sqlalchemy import text

DATA_REQUIRED_ERROR_MESSAGE = "Ce champ est requis"

class EntrepriseCreationForm(FlaskForm):
    siret = StringField("SIRET", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)], render_kw={"placeholder": "Numéro composé de 14 chiffres", "maxlength": "14"})
    nom_entreprise = StringField("Nom de l'entreprise", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    adresse = StringField("Adresse de l'entreprise", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    codepostal = StringField("Code postal de l'entreprise", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    ville = StringField("Ville de l'entreprise", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    pays = StringField("Pays de l'entreprise", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)], render_kw={"style": "margin-bottom: 50px;"})

    nom_contact = StringField("Nom du contact", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    prenom_contact = StringField("Prénom du contact", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    telephone = StringField("Téléphone du contact", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    mail = EmailField("Mail du contact", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE), Email(message="Adresse e-mail invalide")])
    poste = StringField("Poste du contact", validators=[])
    service = StringField("Service du contact", validators=[])
    submit = SubmitField("Envoyer", render_kw={"style": "margin-bottom: 10px;"})

    def validate_siret(self, siret):
        siret = siret.data.strip()
        if re.match("^\d{14}$", siret) == None:
            raise ValidationError("Format incorrect")
        req = requests.get(f"https://entreprise.data.gouv.fr/api/sirene/v1/siret/{siret}")
        if req.status_code != 200:
            raise ValidationError("SIRET inexistant")
        entreprise = Entreprise.query.filter_by(siret=siret).first()
        if entreprise is not None:
            lien = f"<a href=\"/ScoDoc/entreprises/fiche_entreprise/{entreprise.id}\">ici</a>"
            raise ValidationError(Markup(f"Entreprise déjà présent, lien vers la fiche : {lien}"))

class EntrepriseModificationForm(FlaskForm):
    siret = StringField("SIRET", validators=[], render_kw={"disabled":""})
    nom = StringField("Nom de l'entreprise", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    adresse = StringField("Adresse", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    codepostal = StringField("Code postal", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    ville = StringField("Ville", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    pays = StringField("Pays", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    submit = SubmitField("Modifier", render_kw={"style": "margin-bottom: 10px;"})

class OffreCreationForm(FlaskForm):
    intitule = StringField("Intitulé", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    description = TextAreaField("Description", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    type_offre = SelectField("Type de l'offre", choices=[('Stage'), ('Alternance')], validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    missions = TextAreaField("Missions", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    duree = StringField("Durée", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    fichier = FileField("Fichier", validators=[FileAllowed(['pdf', 'docx'], 'Fichier .pdf ou .docx uniquement')])
    submit = SubmitField("Envoyer", render_kw={"style": "margin-bottom: 10px;"})

class OffreModificationForm(FlaskForm):
    intitule = StringField("Intitulé", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    description = TextAreaField("Description", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    type_offre = SelectField("Type de l'offre", choices=[('Stage'), ('Alternance')], validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    missions = TextAreaField("Missions", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    duree = StringField("Durée", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    submit = SubmitField("Modifier", render_kw={"style": "margin-bottom: 10px;"})

class ContactCreationForm(FlaskForm):
    hidden_entreprise_id = HiddenField()
    nom = StringField("Nom", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    prenom = StringField("Prénom", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    telephone = StringField("Téléphone", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    mail = EmailField("Mail", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE), Email(message="Adresse e-mail invalide")])
    poste = StringField("Poste", validators=[])
    service = StringField("Service", validators=[])
    submit = SubmitField("Envoyer", render_kw={"style": "margin-bottom: 10px;"})

    def validate(self):
        rv = FlaskForm.validate(self)
        if not rv:
            return False
        
        contact = EntrepriseContact.query.filter_by(
            entreprise_id = self.hidden_entreprise_id.data,
            nom = self.nom.data,
            prenom = self.prenom.data
        ).first()

        if contact is not None:
            self.nom.errors.append("Ce contact existe déjà (même nom et prénom)")
            self.prenom.errors.append("")
            return False

        return True

class ContactModificationForm(FlaskForm):
    nom = StringField("Nom", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    prenom = StringField("Prénom", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    telephone = StringField("Téléphone", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    mail = EmailField("Mail", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE), Email(message="Adresse e-mail invalide")])
    poste = StringField("Poste", validators=[])
    service = StringField("Service", validators=[])
    submit = SubmitField("Modifier", render_kw={"style": "margin-bottom: 10px;"})

class HistoriqueCreationForm(FlaskForm):
    etudiant = StringField("Étudiant", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)], render_kw={"placeholder": "Tapez le nom de l'étudiant puis selectionnez"})
    type_offre = SelectField("Type de l'offre", choices=[('Stage'), ('Alternance')], validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    date_debut = DateField("Date début", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    date_fin = DateField("Date fin", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    submit = SubmitField("Envoyer", render_kw={"style": "margin-bottom: 10px;"})

    def validate(self):
        rv = FlaskForm.validate(self)
        if not rv:
            return False

        if self.date_debut.data > self.date_fin.data:
            self.date_debut.errors.append("Les dates sont incompatibles")
            self.date_fin.errors.append("Les dates sont incompatibles")
            return False
        return True

    def validate_etudiant(self, etudiant):
        etudiant_data = etudiant.data.upper().strip()
        stm = text("SELECT id, CONCAT(nom, ' ', prenom) as nom_prenom FROM Identite WHERE CONCAT(nom, ' ', prenom)=:nom_prenom")
        etudiant = Identite.query.from_statement(stm).params(nom_prenom=etudiant_data).first()
        if etudiant is None:
            raise ValidationError("Champ incorrect (selectionnez dans la liste)")

class EnvoiOffreForm(FlaskForm):
    responsable = StringField("Responsable de formation", validators=[DataRequired(message=DATA_REQUIRED_ERROR_MESSAGE)])
    submit = SubmitField("Envoyer", render_kw={"style": "margin-bottom: 10px;"})

    def validate_responsable(self, responsable):
        responsable_data = responsable.data.upper().strip()
        stm = text("SELECT id, UPPER(CONCAT(nom, ' ', prenom, ' ', '(', user_name, ')')) FROM \"user\" WHERE UPPER(CONCAT(nom, ' ', prenom, ' ', '(', user_name, ')'))=:responsable_data")
        responsable = User.query.from_statement(stm).params(responsable_data=responsable_data).first()
        if responsable is None:
            raise ValidationError("Champ incorrect (selectionnez dans la liste)")

class SuppressionConfirmationForm(FlaskForm):
    submit = SubmitField("Supprimer", render_kw={"style": "margin-bottom: 10px;"})