import uuid
from datetime import datetime
from sqlalchemy import Column, String, Text, DateTime, Boolean, ForeignKey
from sqlalchemy.dialects.postgresql import UUID, JSONB
from app.core.database import Base


class FlowTemplate(Base):
    __tablename__ = "flow_templates"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    name = Column(String(100), nullable=False)
    description = Column(Text, nullable=True)
    category = Column(String(50), default="general", nullable=False)
    nodes = Column(JSONB, default=list)
    edges = Column(JSONB, default=list)
    variables = Column(JSONB, default=dict)
    preview_image = Column(String(500), nullable=True)
    is_public = Column(Boolean, default=True, nullable=False)
    created_by = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False)
    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)