from sqlalchemy import Column, Integer, String, Boolean, DateTime, ForeignKey, UniqueConstraint, Index, Text
from sqlalchemy.sql import func
from app.db.base import Base

class Contact(Base):
    __tablename__ = "contacts"
    __table_args__ = (
        UniqueConstraint('user_id', 'phone_e164', name='uq_user_phone'),
        Index('ix_contacts_user_phone', 'user_id', 'phone_e164'),
    )

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
    phone_e164 = Column(String, nullable=False)
    first_name = Column(String, nullable=True)
    last_name = Column(String, nullable=True)
    email = Column(String, nullable=True)
    opted_in = Column(Boolean, default=False, nullable=False)
    conversation_window_open = Column(Boolean, default=False, nullable=False)
    source = Column(String, nullable=True)  # excel, csv, google, manual
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())

class ContactTag(Base):
    __tablename__ = "contact_tags"

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
    name = Column(String, nullable=False)
    created_at = Column(DateTime(timezone=True), server_default=func.now())

class ContactTagMap(Base):
    __tablename__ = "contact_tag_map"
    __table_args__ = (
        UniqueConstraint('contact_id', 'tag_id', name='uq_contact_tag'),
    )

    id = Column(Integer, primary_key=True, index=True)
    contact_id = Column(Integer, ForeignKey("contacts.id", ondelete="CASCADE"), nullable=False)
    tag_id = Column(Integer, ForeignKey("contact_tags.id", ondelete="CASCADE"), nullable=False)

class DNDList(Base):
    __tablename__ = "dnd_list"
    __table_args__ = (
        UniqueConstraint('user_id', 'phone_e164', name='uq_dnd_user_phone'),
    )

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
    phone_e164 = Column(String, nullable=False, index=True)
    reason = Column(Text, nullable=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())