"""Configuração do Jinja2 e helpers de renderização/flash."""

from __future__ import annotations

from pathlib import Path

from fastapi.templating import Jinja2Templates
from starlette.requests import Request
from starlette.responses import HTMLResponse

from . import auth
from .config import get_settings
from .dates import ANOS_COMPETENCIA, MESES, format_competencia
from .storage import money

TEMPLATES_DIR = Path(__file__).resolve().parent / "templates"

templates = Jinja2Templates(directory=str(TEMPLATES_DIR))
templates.env.filters["money"] = money
templates.env.filters["competencia"] = format_competencia


def flash(request: Request, message: str, level: str = "info") -> None:
    bucket = request.session.setdefault("_flash", [])
    bucket.append({"message": message, "level": level})


def pop_flash(request: Request) -> list[dict[str, str]]:
    return request.session.pop("_flash", [])


def render(request: Request, name: str, status_code: int = 200, **context) -> HTMLResponse:
    settings = get_settings()
    base = {
        "request": request,
        "current_user": auth.current_user(request),
        "csrf_token": auth.get_csrf_token(request),
        "flashes": pop_flash(request),
        "openai_enabled": settings.openai_enabled,
        "app_name": "Lernotafiscal",
        "meses_competencia": MESES,
        "anos_competencia": ANOS_COMPETENCIA,
    }
    base.update(context)
    return templates.TemplateResponse(request, name, base, status_code=status_code)