import uuid
from datetime import datetime
from decimal import Decimal
from sqlalchemy import String, Text, TIMESTAMP, Numeric, ForeignKey, text
from sqlalchemy.dialects.postgresql import UUID, ARRAY, JSONB
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.core.database import Base


class NoteItem(Base):
    __tablename__ = "items"
    __table_args__ = {"schema": "notes"}

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    title: Mapped[str | None] = mapped_column(String(255))
    content: Mapped[str] = mapped_column(Text, nullable=False)
    category: Mapped[str | None] = mapped_column(String(50))
    tags: Mapped[list[str]] = mapped_column(ARRAY(String(50)), server_default=text("'{}'::varchar[]"))
    gps_lat: Mapped[Decimal | None] = mapped_column(Numeric(10, 7))
    gps_lon: Mapped[Decimal | None] = mapped_column(Numeric(10, 7))
    metadata_: Mapped[dict | None] = mapped_column("metadata", JSONB)
    created_at: Mapped[datetime] = mapped_column(TIMESTAMP(timezone=True), server_default=text("now()"))
    owner_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True))

    attachments: Mapped[list["NoteAttachment"]] = relationship("NoteAttachment", back_populates="note", cascade="all, delete-orphan")


class NoteAttachment(Base):
    __tablename__ = "attachments"
    __table_args__ = {"schema": "notes"}

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    note_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("notes.items.id", ondelete="CASCADE"), nullable=False)
    file_path: Mapped[str | None] = mapped_column(String(255))
    thumbnail_path: Mapped[str | None] = mapped_column(String(255))
    file_type: Mapped[str | None] = mapped_column(String(20))
    original_name: Mapped[str | None] = mapped_column(String(255))
    created_at: Mapped[datetime] = mapped_column(TIMESTAMP(timezone=True), server_default=text("now()"))

    note: Mapped["NoteItem"] = relationship("NoteItem", back_populates="attachments")