from app import db
from app.models.utils import BaseModel


class Section(BaseModel):
    __tablename__ = "sections"

    label = db.Column(db.String(256), unique=False, nullable=False)
    about = db.Column(db.Text, unique=False, nullable=True)

    # Foreign keys
    collection_id = db.Column(db.ForeignKey("collections.id"))
    user_id = db.Column(db.ForeignKey("users.id"))
    version_id = db.Column(db.ForeignKey("book_versions.id"))
    selected_interpretation_id = db.Column(db.Integer, nullable=True)

    # Relationships
    collection = db.relationship("Collection", viewonly=True)
    user = db.relationship("User", viewonly=True)
    version = db.relationship("BookVersion", viewonly=True)
    interpretations = db.relationship("Interpretation", viewonly=True)

    @property
    def path(self):
        parent = self.collection
        grand_parent = parent.parent
        path = f"{self.version.book.label} / "
        if grand_parent.is_root:
            path += f"{parent.label} / "
        else:
            path += f"{grand_parent.label} / {parent.label} / "
        path += self.label
        return path

    @property
    def book_id(self):
        _book_id = self.version.book_id
        return _book_id

    @property
    def sub_collection_id(self):
        parent = self.collection
        grand_parent = parent.parent
        if grand_parent.is_root:
            _sub_collection_id = parent.id
        else:
            _sub_collection_id = grand_parent.id
        return _sub_collection_id

    @property
    def active_interpretations(self):
        return [
            interpretation
            for interpretation in self.interpretations
            if not interpretation.is_deleted
        ]

    def __repr__(self):
        return f"<{self.id}: {self.label}>"