from sqlalchemy import Column, Integer, String, Boolean, DateTime, ForeignKey, Text, UniqueConstraint, Numeric, Index
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func

from web.database import Base


class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, autoincrement=True)
    first_name = Column(String(100), nullable=False)
    last_name = Column(String(100), nullable=False)
    email = Column(String(255), unique=True, nullable=False, index=True)
    phone = Column(String(20), unique=True, nullable=False, index=True)
    password_hash = Column(String(255), nullable=False)
    is_email_confirmed = Column(Boolean, default=False, nullable=False)
    email_confirm_token = Column(String(255), nullable=True)
    password_reset_token = Column(String(255), nullable=True)
    password_reset_expires = Column(DateTime, nullable=True)
    created_at = Column(DateTime, server_default=func.now(), nullable=False)
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False)

    evotor_connection = relationship("EvotorConnection", back_populates="user", uselist=False)
    vk_connection = relationship("VkConnection", back_populates="user", uselist=False)
    sync_config = relationship("SyncConfig", back_populates="user", uselist=False)
    cached_stores = relationship("CachedStore", back_populates="user", cascade="all, delete-orphan")
    cached_groups = relationship("CachedGroup", back_populates="user", cascade="all, delete-orphan")
    cached_products = relationship("CachedProduct", back_populates="user", cascade="all, delete-orphan")


class EvotorConnection(Base):
    __tablename__ = "evotor_connections"

    id = Column(Integer, primary_key=True, autoincrement=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), unique=True, nullable=True)
    evotor_user_id = Column(String(255), unique=True, nullable=True, index=True)
    access_token = Column(Text, nullable=False)
    store_id = Column(String(255), nullable=True)
    store_name = Column(String(255), nullable=True)
    refresh_token = Column(Text, nullable=True)
    token_expires_at = Column(DateTime, nullable=True)
    is_online = Column(Boolean, default=False, server_default="0", nullable=False)
    last_checked_at = Column(DateTime, nullable=True)
    connected_at = Column(DateTime, server_default=func.now(), nullable=False)
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False)

    user = relationship("User", back_populates="evotor_connection")


class VkConnection(Base):
    __tablename__ = "vk_connections"

    id = Column(Integer, primary_key=True, autoincrement=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), unique=True, nullable=False)
    access_token = Column(Text, nullable=False)
    vk_user_id = Column(String(50), nullable=True)
    first_name = Column(String(255), nullable=True)
    last_name = Column(String(255), nullable=True)
    is_online = Column(Boolean, default=False, server_default="0", nullable=False)
    last_checked_at = Column(DateTime, nullable=True)
    connected_at = Column(DateTime, server_default=func.now(), nullable=False)
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False)

    user = relationship("User", back_populates="vk_connection")


class SyncConfig(Base):
    __tablename__ = "sync_configs"

    id = Column(Integer, primary_key=True, autoincrement=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), unique=True, nullable=False)
    is_enabled = Column(Boolean, default=False, nullable=False)
    confirmed_at = Column(DateTime, nullable=True)
    created_at = Column(DateTime, server_default=func.now(), nullable=False)
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False)

    user = relationship("User", back_populates="sync_config")
    filters = relationship("SyncFilter", back_populates="sync_config", cascade="all, delete-orphan")


class SyncFilter(Base):
    __tablename__ = "sync_filters"

    id = Column(Integer, primary_key=True, autoincrement=True)
    sync_config_id = Column(Integer, ForeignKey("sync_configs.id", ondelete="CASCADE"), nullable=False)
    entity_type = Column(String(20), nullable=False)   # "store", "group", "product"
    entity_id = Column(String(255), nullable=False)
    entity_name = Column(String(255), nullable=True)
    filter_mode = Column(String(10), nullable=False)   # "include", "exclude"
    parent_entity_id = Column(String(255), nullable=True)
    created_at = Column(DateTime, server_default=func.now(), nullable=False)

    __table_args__ = (
        UniqueConstraint("sync_config_id", "entity_type", "entity_id"),
    )

    sync_config = relationship("SyncConfig", back_populates="filters")


class CachedStore(Base):
    __tablename__ = "cached_stores"

    id = Column(Integer, primary_key=True, autoincrement=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
    evotor_id = Column(String(255), nullable=False)
    name = Column(String(255), nullable=False)
    address = Column(String(500), nullable=True)
    fetched_at = Column(DateTime, nullable=False)

    __table_args__ = (
        UniqueConstraint("user_id", "evotor_id"),
        Index("ix_cached_stores_user_id", "user_id"),
    )

    user = relationship("User", back_populates="cached_stores")


class CachedGroup(Base):
    __tablename__ = "cached_groups"

    id = Column(Integer, primary_key=True, autoincrement=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
    evotor_id = Column(String(255), nullable=False)
    store_evotor_id = Column(String(255), nullable=False)
    name = Column(String(255), nullable=False)
    fetched_at = Column(DateTime, nullable=False)

    __table_args__ = (
        UniqueConstraint("user_id", "evotor_id"),
        Index("ix_cached_groups_user_store", "user_id", "store_evotor_id"),
    )

    user = relationship("User", back_populates="cached_groups")


class CachedProduct(Base):
    __tablename__ = "cached_products"

    id = Column(Integer, primary_key=True, autoincrement=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
    evotor_id = Column(String(255), nullable=False)
    store_evotor_id = Column(String(255), nullable=False)
    group_evotor_id = Column(String(255), nullable=True)
    name = Column(String(255), nullable=False)
    price = Column(Numeric(12, 2), nullable=True)
    quantity = Column(Numeric(12, 3), nullable=True)
    measure_name = Column(String(20), nullable=True)
    article_number = Column(String(100), nullable=True)
    allow_to_sell = Column(Boolean, nullable=True)
    fetched_at = Column(DateTime, nullable=False)
    synced_at = Column(DateTime, nullable=True)

    __table_args__ = (
        UniqueConstraint("user_id", "evotor_id"),
        Index("ix_cached_products_user_store_group", "user_id", "store_evotor_id", "group_evotor_id"),
    )

    user = relationship("User", back_populates="cached_products")