from sqlalchemy import Column, String, Integer, DateTime, Boolean, Text, ForeignKey, JSON, BigInteger
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
import uuid

from adapters.db.session import Base


class FileStorage(Base):
    __tablename__ = "file_storage"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    original_name = Column(String(255), nullable=False)
    stored_name = Column(String(255), nullable=False)
    file_path = Column(String(500), nullable=False)
    file_size = Column(Integer, nullable=False)
    mime_type = Column(String(100), nullable=False)
    storage_type = Column(String(20), nullable=False)  # local, ftp
    storage_config_id = Column(String(36), ForeignKey("storage_configs.id"), nullable=True)
    uploaded_by = Column(Integer, ForeignKey("users.id"), nullable=False)
    module_context = Column(String(50), nullable=False)  # tickets, accounting, business_logo, etc.
    context_id = Column(String(36), nullable=True)  # ticket_id, document_id, etc.
    developer_data = Column(JSON, nullable=True)
    checksum = Column(String(64), nullable=True)
    is_active = Column(Boolean, default=True, nullable=False)
    is_temporary = Column(Boolean, default=False, nullable=False)
    is_verified = Column(Boolean, default=False, nullable=False)
    verification_token = Column(String(100), nullable=True)
    last_verified_at = Column(DateTime(timezone=True), nullable=True)
    expires_at = Column(DateTime(timezone=True), nullable=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)
    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
    deleted_at = Column(DateTime(timezone=True), nullable=True)

    # Relationships
    uploader = relationship("User", foreign_keys=[uploaded_by])
    storage_config = relationship("StorageConfig", foreign_keys=[storage_config_id])


class StorageConfig(Base):
    __tablename__ = "storage_configs"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    name = Column(String(100), nullable=False)
    storage_type = Column(String(20), nullable=False)  # local, ftp
    is_default = Column(Boolean, default=False, nullable=False)
    is_active = Column(Boolean, default=True, nullable=False)
    config_data = Column(JSON, nullable=False)
    created_by = Column(Integer, ForeignKey("users.id"), nullable=False)
    created_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)
    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)

    # Relationships
    creator = relationship("User", foreign_keys=[created_by])


class FileVerification(Base):
    __tablename__ = "file_verifications"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    file_id = Column(String(36), ForeignKey("file_storage.id"), nullable=False)
    module_name = Column(String(50), nullable=False)
    verification_token = Column(String(100), nullable=False)
    verified_at = Column(DateTime(timezone=True), nullable=True)
    verified_by = Column(Integer, ForeignKey("users.id"), nullable=True)
    verification_data = Column(JSON, nullable=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)

    # Relationships
    file = relationship("FileStorage", foreign_keys=[file_id])
    verifier = relationship("User", foreign_keys=[verified_by])