from sqlalchemy import Column, String, Boolean, Date, ForeignKey, Table, Text
from sqlalchemy.dialects.postgresql import UUID, ARRAY
from sqlalchemy.orm import relationship, declarative_base
import uuid

Base = declarative_base()

item_tags = Table(
    "item_tags",
    Base.metadata,
    Column("item_id", UUID(as_uuid=True), ForeignKey("items.id")),
    Column("tag_id", UUID(as_uuid=True), ForeignKey("tags.id")),
)


class Item(Base):
    __tablename__ = "items"
    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    user_id = Column(UUID(as_uuid=True), nullable=False)
    name = Column(Text, nullable=False)
    tags = relationship("Tag", secondary=item_tags, back_populates="items")


class Tag(Base):
    __tablename__ = "tags"
    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    user_id = Column(UUID(as_uuid=True), nullable=False)
    name = Column(String, nullable=False, unique=False)
    items = relationship("Item", secondary=item_tags, back_populates="tags")


class Trip(Base):
    __tablename__ = "trips"
    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    user_id = Column(UUID(as_uuid=True), nullable=False)
    name = Column(String)
    start_date = Column(Date)
    end_date = Column(Date)
    selected_tags = Column(ARRAY(String))
    marked_tags = Column(ARRAY(String))


class TripItem(Base):
    __tablename__ = "trip_items"
    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    trip_id = Column(UUID(as_uuid=True), ForeignKey("trips.id"))
    item_id = Column(UUID(as_uuid=True), ForeignKey("items.id"), nullable=True)
    tag = Column(String, nullable=True)  # e.g. "#kristin"
    name = Column(Text)
    calculated_label = Column(Text)
    checked = Column(Boolean, default=False)