# retoor <retoor@molodetz.nl>
import logging

from fastapi.responses import JSONResponse, RedirectResponse

logger = logging.getLogger(__name__)


def wants_json(request):
    content_type = request.headers.get("content-type", "")
    if content_type.startswith("application/json"):
        return True
    accept = request.headers.get("accept", "")
    return "application/json" in accept and "text/html" not in accept


def json_error(status_code, message, **extra):
    body = {"status": status_code, "message": message}
    body.update(extra)
    return JSONResponse({"error": body}, status_code=status_code)


def respond(request, template, ctx, *, model, status_code=200):
    if wants_json(request):
        try:
            payload = model.model_validate(ctx).model_dump(mode="json")
        except Exception:
            logger.exception("schema validation failed for %s", model.__name__)
            return json_error(500, "Response serialization failed")
        return JSONResponse(payload, status_code=status_code)
    from molodetz.templating import templates

    context = dict(ctx)
    return templates.TemplateResponse(request, template, context, status_code=status_code)


def action_result(request, redirect_url, *, data=None, status_code=302):
    if wants_json(request):
        return JSONResponse({"ok": True, "redirect": redirect_url, "data": data})
    return RedirectResponse(redirect_url, status_code=status_code)