from __future__ import annotations

from typing import Any

from fastapi import APIRouter, Request
from fastapi.responses import FileResponse
from pydantic import BaseModel, Field

from app.services import anexos_service, auth_service
from app.services.audit_log_service import log_event


router = APIRouter(prefix="/api/anexos", tags=["anexos"])


class GerarAnexosPayload(BaseModel):
    modelo_id: str = Field(..., min_length=1)
    banco_dados_colunas: list[str] | None = None
    avaliacao: dict[str, Any] | None = None


@router.get("/modelos")
def modelos(request: Request) -> dict[str, Any]:
    auth_service.require_user(request)
    return anexos_service.listar_modelos()


@router.get("/modelos/{modelo_id}/columns")
def modelo_colunas(modelo_id: str, request: Request) -> dict[str, Any]:
    auth_service.require_user(request)
    return anexos_service.obter_colunas(modelo_id)


@router.post("/generate")
def gerar(payload: GerarAnexosPayload, request: Request) -> dict[str, Any]:
    user = auth_service.require_user(request)
    caminho, avisos = anexos_service.gerar_documento(
        payload.modelo_id,
        banco_dados_colunas=payload.banco_dados_colunas,
        avaliacao=payload.avaliacao,
    )
    log_event(
        "visualizacao",
        "gerar_anexos_modelo",
        user=user,
        request=request,
        details={
            "modelo_id": payload.modelo_id,
            "com_avaliacao": bool(payload.avaliacao),
            "total_colunas": len(payload.banco_dados_colunas or []),
        },
    )
    return {
        "message": f"Anexos gerados com sucesso: {caminho.name}",
        "filename": caminho.name,
        "statistical_warnings": avisos,
    }


@router.get("/download/{filename}")
def download(filename: str, request: Request) -> FileResponse:
    auth_service.require_user(request)
    caminho = anexos_service.resolver_download(filename)
    return FileResponse(
        path=caminho,
        filename=caminho.name,
        media_type="application/vnd.openxmlformats-officedocument.wordprocessingml.document",
        headers={"Cache-Control": "no-store"},
    )