"""ScoDoc 9 models : Référentiel Compétence BUT 2021
"""
from enum import unique
from typing import Any

from app import db

from app.scodoc.sco_utils import ModuleType


class XMLModel:
    _xml_attribs = {}  # to be overloaded
    id = "_"

    @classmethod
    def attr_from_xml(cls, args: dict) -> dict:
        """dict with attributes imported from Orébut XML
        and renamed for our models.
        The mapping is specified by the _xml_attribs
        attribute in each model class.
        """
        return {cls._xml_attribs.get(k, k): v for (k, v) in args.items()}

    def __repr__(self):
        return f'<{self.__class__.__name__} {self.id} "{self.titre if hasattr(self, "titre") else ""}">'


class ApcReferentielCompetences(db.Model, XMLModel):
    id = db.Column(db.Integer, primary_key=True)
    dept_id = db.Column(db.Integer, db.ForeignKey("departement.id"), index=True)
    specialite = db.Column(db.Text())
    specialite_long = db.Column(db.Text())
    type_titre = db.Column(db.Text())
    _xml_attribs = {  # xml_attrib : attribute
        "type": "type_titre",
    }
    competences = db.relationship(
        "ApcCompetence",
        backref="referentiel",
        lazy="dynamic",
        cascade="all, delete-orphan",
    )
    parcours = db.relationship(
        "ApcParcours",
        backref="referentiel",
        lazy="dynamic",
        cascade="all, delete-orphan",
    )

    def to_dict(self):
        """Représentation complète du ref. de comp.
        comme un dict.
        """


class ApcCompetence(db.Model, XMLModel):
    id = db.Column(db.Integer, primary_key=True)
    referentiel_id = db.Column(
        db.Integer, db.ForeignKey("apc_referentiel_competences.id"), nullable=False
    )
    titre = db.Column(db.Text(), nullable=False)
    titre_long = db.Column(db.Text())
    couleur = db.Column(db.Text())
    numero = db.Column(db.Integer)  # ordre de présentation
    couleur = db.Column(db.Text())
    _xml_attribs = {  # xml_attrib : attribute
        "name": "titre",
        "libelle_long": "titre_long",
    }
    situations = db.relationship(
        "ApcSituationPro",
        backref="competence",
        lazy="dynamic",
        cascade="all, delete-orphan",
    )
    composantes_essentielles = db.relationship(
        "ApcComposanteEssentielle",
        backref="competence",
        lazy="dynamic",
        cascade="all, delete-orphan",
    )
    niveaux = db.relationship(
        "ApcNiveau",
        backref="competence",
        lazy="dynamic",
        cascade="all, delete-orphan",
    )


class ApcSituationPro(db.Model, XMLModel):
    id = db.Column(db.Integer, primary_key=True)
    competence_id = db.Column(
        db.Integer, db.ForeignKey("apc_competence.id"), nullable=False
    )
    libelle = db.Column(db.Text(), nullable=False)
    # aucun attribut (le text devient le libellé)


class ApcComposanteEssentielle(db.Model, XMLModel):
    id = db.Column(db.Integer, primary_key=True)
    competence_id = db.Column(
        db.Integer, db.ForeignKey("apc_competence.id"), nullable=False
    )
    libelle = db.Column(db.Text(), nullable=False)


class ApcNiveau(db.Model, XMLModel):
    id = db.Column(db.Integer, primary_key=True)
    competence_id = db.Column(
        db.Integer, db.ForeignKey("apc_competence.id"), nullable=False
    )
    libelle = db.Column(db.Text(), nullable=False)
    annee = db.Column(db.Text(), nullable=False)  # "BUT2"
    # L'ordre est l'année d'apparition de ce niveau
    ordre = db.Column(db.Integer, nullable=False)  # 1, 2, 3
    app_critiques = db.relationship(
        "ApcAppCritique",
        backref="niveau",
        lazy="dynamic",
        cascade="all, delete-orphan",
    )


class ApcAppCritique(db.Model, XMLModel):
    "Apprentissage Critique BUT"
    id = db.Column(db.Integer, primary_key=True)
    niveau_id = db.Column(db.Integer, db.ForeignKey("apc_niveau.id"), nullable=False)
    code = db.Column(db.Text(), nullable=False)
    libelle = db.Column(db.Text())

    modules = db.relationship(
        "Module",
        secondary="apc_modules_acs",
        lazy="dynamic",
        backref=db.backref("app_critiques", lazy="dynamic"),
    )

    def to_dict(self):
        result = dict(self.__dict__)
        result.pop("_sa_instance_state", None)
        return result

    def get_label(self):
        return self.code + " - " + self.titre

    def __repr__(self):
        return "<AC {}>".format(self.code)

    def get_saes(self):
        """Liste des SAE associées"""
        return [m for m in self.modules if m.module_type == ModuleType.SAE]


ApcModulesACs = db.Table(
    "apc_modules_acs",
    db.Column("module_id", db.ForeignKey("notes_modules.id")),
    db.Column("app_crit_id", db.ForeignKey("apc_app_critique.id")),
)


class ApcParcours(db.Model, XMLModel):
    id = db.Column(db.Integer, primary_key=True)
    referentiel_id = db.Column(
        db.Integer, db.ForeignKey("apc_referentiel_competences.id"), nullable=False
    )
    numero = db.Column(db.Integer)  # ordre de présentation
    code = db.Column(db.Text(), nullable=False)
    libelle = db.Column(db.Text(), nullable=False)
    annees = db.relationship(
        "ApcAnneeParcours",
        backref="parcours",
        lazy="dynamic",
        cascade="all, delete-orphan",
    )


class ApcAnneeParcours(db.Model, XMLModel):
    id = db.Column(db.Integer, primary_key=True)
    parcours_id = db.Column(
        db.Integer, db.ForeignKey("apc_parcours.id"), nullable=False
    )
    numero = db.Column(db.Integer)  # ordre de présentation

    # L'attribut s'appelle "ordre" dans le XML Orébut
    _xml_attribs = {  # xml_attrib : attribute
        "ordre": "numero",
    }


class ApcParcoursNiveauCompetence(db.Model):
    """Association entre année de parcours et compétence.
    Le "niveau" de la compétence est donné ici
    (convention Orébut)
    """

    competence_id = db.Column(
        db.Integer,
        db.ForeignKey("apc_competence.id", ondelete="CASCADE"),
        primary_key=True,
    )
    annee_parcours_id = db.Column(
        db.Integer,
        db.ForeignKey("apc_annee_parcours.id", ondelete="CASCADE"),
        primary_key=True,
    )
    niveau = db.Column(db.Integer, nullable=False)  # 1, 2, 3
    competence = db.relationship(
        ApcCompetence,
        backref=db.backref(
            "annee_parcours",
            passive_deletes=True,
            cascade="save-update, merge, delete, delete-orphan",
        ),
    )
    annee_parcours = db.relationship(
        ApcAnneeParcours,
        backref=db.backref(
            "competences",
            passive_deletes=True,
            cascade="save-update, merge, delete, delete-orphan",
        ),
    )