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"""

Admin controller for managing users and service catalog.

Simple authentication with hardcoded admin:admin credentials.

"""

from typing import Optional
from sqlalchemy import select, delete, func
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy.orm import selectinload
from src.model import User, ServiceCatalog, ResourceCatalog
from src.lib.enum import ServiceType


# Simple admin credentials (hardcoded for now)
ADMIN_USERNAME = "admin"
ADMIN_PASSWORD = "admin"


class AdminController:
    """Controller for admin operations."""

    @staticmethod
    def verify_admin_credentials(username: str, password: str) -> bool:
        """Verify admin credentials."""
        return username == ADMIN_USERNAME and password == ADMIN_PASSWORD

    @staticmethod
    async def get_all_users(session: AsyncSession) -> list[User]:
        """Get all users."""
        result = await session.execute(select(User).order_by(User.created_at.desc()))
        return result.scalars().all()

    @staticmethod
    async def get_all_services(session: AsyncSession) -> list[ServiceCatalog]:
        """Get all services from catalog."""
        result = await session.execute(
            select(ServiceCatalog).order_by(
                ServiceCatalog.service_type, ServiceCatalog.name
            )
        )
        return result.scalars().all()

    @staticmethod
    async def get_service_by_id(

        session: AsyncSession, service_id: int

    ) -> Optional[ServiceCatalog]:
        """Get service by ID."""
        return await session.get(ServiceCatalog, service_id)

    @staticmethod
    async def create_service(

        session: AsyncSession,

        name: str,

        slug: str,

        service_type: ServiceType,

        description: Optional[str] = None,

        is_active: bool = True,

    ) -> ServiceCatalog:
        """Create a new service in the catalog."""
        service = ServiceCatalog(
            name=name,
            slug=slug,
            service_type=service_type,
            description=description,
            is_active=is_active,
        )
        session.add(service)
        await session.commit()
        await session.refresh(service)
        return service

    @staticmethod
    async def delete_service(session: AsyncSession, service_id: int) -> bool:
        """Delete a service from the catalog."""
        service = await session.get(ServiceCatalog, service_id)
        if service:
            await session.delete(service)
            await session.commit()
            return True
        return False

    @staticmethod
    async def toggle_service_status(

        session: AsyncSession, service_id: int

    ) -> Optional[ServiceCatalog]:
        """Toggle service active status."""
        service = await session.get(ServiceCatalog, service_id)
        if service:
            service.is_active = not service.is_active
            await session.commit()
            await session.refresh(service)
            return service
        return None

    @staticmethod
    async def get_user_count(session: AsyncSession) -> int:
        """Get total user count."""
        result = await session.execute(select(func.count()).select_from(User))
        return result.scalar_one()

    @staticmethod
    async def get_service_count(session: AsyncSession) -> int:
        """Get total service count."""
        result = await session.execute(select(func.count()).select_from(ServiceCatalog))
        return result.scalar_one()

    # ==================== Resource Catalog Methods ====================

    @staticmethod
    async def get_all_resources(session: AsyncSession) -> list[ResourceCatalog]:
        """Get all resources from catalog with service information."""
        result = await session.execute(
            select(ResourceCatalog)
            .options(selectinload(ResourceCatalog.service))
            .order_by(ResourceCatalog.service_id, ResourceCatalog.name)
        )
        return result.scalars().all()

    @staticmethod
    async def get_resources_by_service(

        session: AsyncSession, service_id: int

    ) -> list[ResourceCatalog]:
        """Get all resources for a specific service."""
        result = await session.execute(
            select(ResourceCatalog)
            .where(ResourceCatalog.service_id == service_id)
            .order_by(ResourceCatalog.name)
        )
        return result.scalars().all()

    @staticmethod
    async def get_resource_by_id(

        session: AsyncSession, resource_id: int

    ) -> Optional[ResourceCatalog]:
        """Get resource by ID."""
        result = await session.execute(
            select(ResourceCatalog)
            .options(selectinload(ResourceCatalog.service))
            .where(ResourceCatalog.id == resource_id)
        )
        return result.scalar_one_or_none()

    @staticmethod
    async def get_resource_by_slug(

        session: AsyncSession, slug: str

    ) -> Optional[ResourceCatalog]:
        """Get resource by slug."""
        result = await session.execute(
            select(ResourceCatalog)
            .options(selectinload(ResourceCatalog.service))
            .where(ResourceCatalog.slug == slug)
        )
        return result.scalar_one_or_none()

    @staticmethod
    async def create_resource(

        session: AsyncSession,

        name: str,

        slug: str,

        service_id: int,

        description: Optional[str] = None,

        is_active: bool = True,

    ) -> ResourceCatalog:
        """Create a new resource in the catalog."""
        resource = ResourceCatalog(
            name=name,
            slug=slug,
            service_id=service_id,
            description=description,
            is_active=is_active,
        )
        session.add(resource)
        await session.commit()
        await session.refresh(resource)
        return resource

    @staticmethod
    async def delete_resource(session: AsyncSession, resource_id: int) -> bool:
        """Delete a resource from the catalog."""
        resource = await session.get(ResourceCatalog, resource_id)
        if resource:
            await session.delete(resource)
            await session.commit()
            return True
        return False

    @staticmethod
    async def toggle_resource_status(

        session: AsyncSession, resource_id: int

    ) -> Optional[ResourceCatalog]:
        """Toggle resource active status."""
        resource = await session.get(ResourceCatalog, resource_id)
        if resource:
            resource.is_active = not resource.is_active
            await session.commit()
            await session.refresh(resource)
            return resource
        return None

    @staticmethod
    async def get_resource_count(session: AsyncSession) -> int:
        """Get total resource count."""
        result = await session.execute(select(func.count()).select_from(ResourceCatalog))
        return result.scalar_one()