from datetime import datetime
from app import db
from plugins.search.models import Tag, plant_tags
from plugins.growlog.models import PlantUpdate

class PlantCommonName(db.Model):
    __tablename__ = 'plants_common'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(120), unique=True, nullable=False)

class PlantScientificName(db.Model):
    __tablename__ = 'plants_scientific'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(255), unique=True, nullable=False)

class PlantLineage(db.Model):
    __tablename__ = 'plant_lineage'
    id = db.Column(db.Integer, primary_key=True)
    parent_plant_id = db.Column(db.Integer, db.ForeignKey('plants.id'), nullable=False)
    child_plant_id = db.Column(db.Integer, db.ForeignKey('plants.id'), nullable=False)

class PlantOwnershipLog(db.Model):
    __tablename__ = 'plant_ownership_log'
    id = db.Column(db.Integer, primary_key=True)
    plant_id = db.Column(db.Integer, db.ForeignKey('plants.id'), nullable=False)
    user_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=False)
    date_acquired = db.Column(db.DateTime, default=datetime.utcnow)
    date_relinquished = db.Column(db.DateTime, nullable=True)

class Plant(db.Model):
    __tablename__ = 'plants'
    id = db.Column(db.Integer, primary_key=True)
    common_name_id = db.Column(db.Integer, db.ForeignKey('plants_common.id'))
    scientific_name_id = db.Column(db.Integer, db.ForeignKey('plants_scientific.id'))
    parent_id = db.Column(db.Integer, db.ForeignKey('plants.id'), nullable=True)
    is_dead = db.Column(db.Boolean, default=False)
    date_added = db.Column(db.DateTime, default=datetime.utcnow)
    created_by_user_id = db.Column(db.Integer, db.ForeignKey('users.id'))

    # Relationships
    updates = db.relationship('PlantUpdate', backref='growlog', lazy=True)
    lineage = db.relationship('PlantLineage', backref='child', lazy=True, foreign_keys='PlantLineage.child_plant_id')
    tags = db.relationship('Tag', secondary=plant_tags, backref='plants')
    
    # → relationships so we can pull in the actual names:
    common_name = db.relationship(
        'PlantCommonName',
        backref=db.backref('plants', lazy='dynamic'),
        lazy=True
    )
    scientific_name = db.relationship(
        'PlantScientificName',
        backref=db.backref('plants', lazy='dynamic'),
        lazy=True
    )