"""
Router template messaggi (Feature 1).

Endpoint:
  GET    /templates           – lista template del tenant
  POST   /templates           – crea template (admin)
  GET    /templates/{id}      – dettaglio template
  PUT    /templates/{id}      – aggiorna template (admin)
  DELETE /templates/{id}      – elimina template (admin)
"""

import uuid

from fastapi import APIRouter, Query, status

from app.dependencies import AdminUser, CurrentUser, DB
from app.schemas.template import TemplateCreate, TemplateListResponse, TemplateResponse, TemplateUpdate
from app.services.template_service import TemplateService

router = APIRouter(tags=["Templates"])


@router.get("/templates", response_model=TemplateListResponse)
async def list_templates(
    current_user: CurrentUser,
    db: DB,
    q: str | None = Query(None, description="Filtro per nome"),
) -> TemplateListResponse:
    """Elenca i template del tenant corrente."""
    svc = TemplateService(db)
    items, total = await svc.list_templates(current_user.tenant_id, q=q)
    return TemplateListResponse(
        items=[TemplateResponse.model_validate(t) for t in items],
        total=total,
    )


@router.post("/templates", response_model=TemplateResponse, status_code=status.HTTP_201_CREATED)
async def create_template(
    data: TemplateCreate,
    current_user: AdminUser,
    db: DB,
) -> TemplateResponse:
    """Crea un nuovo template (solo admin)."""
    svc = TemplateService(db)
    template = await svc.create_template(current_user.tenant_id, data, created_by=current_user.id)
    return TemplateResponse.model_validate(template)


@router.get("/templates/{template_id}", response_model=TemplateResponse)
async def get_template(
    template_id: uuid.UUID,
    current_user: CurrentUser,
    db: DB,
) -> TemplateResponse:
    """Restituisce il dettaglio di un template."""
    svc = TemplateService(db)
    template = await svc.get_template(current_user.tenant_id, template_id)
    return TemplateResponse.model_validate(template)


@router.put("/templates/{template_id}", response_model=TemplateResponse)
async def update_template(
    template_id: uuid.UUID,
    data: TemplateUpdate,
    current_user: AdminUser,
    db: DB,
) -> TemplateResponse:
    """Aggiorna un template esistente (solo admin)."""
    svc = TemplateService(db)
    template = await svc.update_template(current_user.tenant_id, template_id, data)
    return TemplateResponse.model_validate(template)


@router.delete("/templates/{template_id}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_template(
    template_id: uuid.UUID,
    current_user: AdminUser,
    db: DB,
) -> None:
    """Elimina un template (solo admin)."""
    svc = TemplateService(db)
    await svc.delete_template(current_user.tenant_id, template_id)