from sqlalchemy import Column, String, Integer, DateTime, Boolean, Text, ForeignKey, JSON
from sqlalchemy.dialects.postgresql import UUID
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(UUID(as_uuid=True), primary_key=True, default=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(UUID(as_uuid=True), ForeignKey("storage_configs.id"), nullable=True)
    uploaded_by = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False)
    module_context = Column(String(50), nullable=False)  # tickets, accounting, business_logo, etc.
    context_id = Column(UUID(as_uuid=True), 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(UUID(as_uuid=True), primary_key=True, default=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(UUID(as_uuid=True), 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(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    file_id = Column(UUID(as_uuid=True), 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(UUID(as_uuid=True), 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])