"""Tenant management API routes."""

from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session
from ..database import get_db
from ..models.tenant import Tenant
from ..models.user import User
from ..schemas.tenant import TenantCreate, TenantUpdate, TenantResponse
from .deps import require_super_admin

router = APIRouter()


@router.get("/", response_model=list[TenantResponse])
def list_tenants(
    skip: int = 0,
    limit: int = 100,
    db: Session = Depends(get_db),
    current_user: User = Depends(require_super_admin)
):
    """List all tenants (super admin only)."""
    tenants = db.query(Tenant).offset(skip).limit(limit).all()
    return tenants


@router.post("/", response_model=TenantResponse, status_code=status.HTTP_201_CREATED)
def create_tenant(
    tenant_data: TenantCreate,
    db: Session = Depends(get_db),
    current_user: User = Depends(require_super_admin)
):
    """Create a new tenant (super admin only)."""
    # Check if name already exists
    existing = db.query(Tenant).filter(Tenant.name == tenant_data.name).first()
    if existing:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Tenant with this name already exists"
        )

    tenant = Tenant(**tenant_data.model_dump())
    db.add(tenant)
    db.commit()
    db.refresh(tenant)
    return tenant


@router.get("/{tenant_id}", response_model=TenantResponse)
def get_tenant(
    tenant_id: int,
    db: Session = Depends(get_db),
    current_user: User = Depends(require_super_admin)
):
    """Get tenant by ID (super admin only)."""
    tenant = db.query(Tenant).filter(Tenant.id == tenant_id).first()
    if not tenant:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Tenant not found"
        )
    return tenant


@router.put("/{tenant_id}", response_model=TenantResponse)
def update_tenant(
    tenant_id: int,
    tenant_data: TenantUpdate,
    db: Session = Depends(get_db),
    current_user: User = Depends(require_super_admin)
):
    """Update tenant (super admin only)."""
    tenant = db.query(Tenant).filter(Tenant.id == tenant_id).first()
    if not tenant:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Tenant not found"
        )

    update_data = tenant_data.model_dump(exclude_unset=True)
    for field, value in update_data.items():
        setattr(tenant, field, value)

    db.commit()
    db.refresh(tenant)
    return tenant


@router.delete("/{tenant_id}", status_code=status.HTTP_204_NO_CONTENT)
def delete_tenant(
    tenant_id: int,
    db: Session = Depends(get_db),
    current_user: User = Depends(require_super_admin)
):
    """Delete tenant (super admin only)."""
    tenant = db.query(Tenant).filter(Tenant.id == tenant_id).first()
    if not tenant:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Tenant not found"
        )

    db.delete(tenant)
    db.commit()