from sqlalchemy import Column, Integer, String, Boolean, ForeignKey, DateTime, UniqueConstraint
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from database import Base

class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    email = Column(String, unique=True, index=True, nullable=False)
    username = Column(String, unique=True, index=True)
    hashed_password = Column(String, nullable=False)
    is_active = Column(Boolean, default=True)
    is_admin = Column(Boolean, default=False, nullable=False, server_default="false")
    sound_effects_enabled = Column(Boolean, default=False)
    display_name = Column(String, nullable=True)
    favorite_team = Column(String, nullable=True)
    banter_level = Column(String, default="Chill", nullable=False)

    conversations = relationship("Conversation", back_populates="owner")
    global_messages = relationship("GlobalMessage", back_populates="author") # Corrected typo here
    reactions = relationship("MessageReaction", back_populates="user", cascade="all, delete-orphan")

class Conversation(Base):
    __tablename__ = "conversations"

    id = Column(Integer, primary_key=True, index=True)
    owner_id = Column(Integer, ForeignKey("users.id"))
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    owner = relationship("User", back_populates="conversations")
    messages = relationship("Message", back_populates="conversation", cascade="all, delete-orphan")

class Message(Base):
    __tablename__ = "messages"

    id = Column(Integer, primary_key=True, index=True)
    conversation_id = Column(Integer, ForeignKey("conversations.id"))
    role = Column(String, nullable=False)
    content = Column(String, nullable=False)
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    conversation = relationship("Conversation", back_populates="messages")

class GlobalMessage(Base):
    __tablename__ = "global_messages"

    id = Column(Integer, primary_key=True, index=True)
    author_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    content = Column(String, nullable=False)
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    author = relationship("User", back_populates="global_messages")
    reactions = relationship("MessageReaction", back_populates="message", cascade="all, delete-orphan")

class MessageReaction(Base):
    __tablename__ = "message_reactions"

    id = Column(Integer, primary_key=True, index=True)
    message_id = Column(Integer, ForeignKey("global_messages.id"), nullable=False)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    emoji = Column(String, nullable=False)

    message = relationship("GlobalMessage", back_populates="reactions")
    user = relationship("User", back_populates="reactions")

    __table_args__ = (UniqueConstraint('message_id', 'user_id', 'emoji', name='_message_user_emoji_uc'),)