from datetime import datetime

from flask_login import current_user

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


class Interpretation(BaseModel):
    __tablename__ = "interpretations"

    label = db.Column(db.String(256), unique=False, nullable=False)
    text = db.Column(db.Text, unique=False, nullable=False)
    marked = db.Column(db.Boolean, default=False)
    created_at = db.Column(db.DateTime, default=datetime.now)

    # Foreign keys
    user_id = db.Column(db.ForeignKey("users.id"))
    section_id = db.Column(db.ForeignKey("sections.id"))

    # Relationships
    user = db.relationship("User")
    section = db.relationship("Section")
    comments = db.relationship("Comment", viewonly=True)
    votes = db.relationship("InterpretationVote", viewonly=True)
    tags = db.relationship(
        "Tag",
        secondary="interpretation_tags",
        back_populates="interpretations",
    )

    @property
    def vote_count(self):
        count = 0

        for vote in self.votes:
            if vote.positive:
                count += 1
                continue
            count -= 1

        return count

    @property
    def current_user_vote(self):
        for vote in self.votes:
            if vote.user_id == current_user.id:
                return vote.positive
        return None

    @property
    def active_comments(self):
        return [comment for comment in self.comments if not comment.is_deleted]

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