from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Enum
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from app.core.config import Base
import enum

class SupportStatus(str, enum.Enum):
    OPEN = "open"
    IN_PROGRESS = "in_progress"
    RESOLVED = "resolved"
    CLOSED = "closed"

class SupportPriority(str, enum.Enum):
    LOW = "low"
    MEDIUM = "medium"
    HIGH = "high"
    CRITICAL = "critical"

class Support(Base):
    __tablename__ = "supports"
    
    id = Column(Integer, primary_key=True, index=True)
    title = Column(String(255), nullable=False)
    description = Column(Text, nullable=True)
    status = Column(Enum(SupportStatus, values_callable=lambda x: [e.value for e in x]), default=SupportStatus.OPEN)
    priority = Column(Enum(SupportPriority, values_callable=lambda x: [e.value for e in x]), default=SupportPriority.MEDIUM)
    support_code = Column(String(64), nullable=True, unique=True, index=True)
    
    project_id = Column(Integer, ForeignKey("projects.id"), nullable=False)
    milestone_id = Column(Integer, ForeignKey("milestones.id"), nullable=False)
    reporter_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    assignee_id = Column(Integer, ForeignKey("users.id"), nullable=True)
    
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())