from flask import flash
from markupsafe import Markup
from flask.app import Flask
import requests, re
from flask_wtf import FlaskForm
from wtforms import StringField, SubmitField, TextAreaField, SelectField, FileField, HiddenField
from wtforms.fields.html5 import EmailField, DateField
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"})
    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)])

    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")])
    submit = SubmitField("Envoyer")

    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")

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)])
    ficher = FileField("Fichier", validators=[])
    submit = SubmitField("Envoyer")

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")

class ContactCreationForm(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")])
    hidden_entreprise_id = HiddenField()
    submit = SubmitField("Envoyer")

    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")])
    submit = SubmitField("Modifier")

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")

    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")

    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")