"use server";

import { redirect } from "next/navigation";
import { createSession, getCurrentUser, requireExpert } from "../../lib/auth";
import { getDb } from "../../lib/db";
import { magBeoordelen } from "../../lib/experts";
import { BONUS_MALUS_OPTIONS } from "../../lib/rikxCalculatie";

function readScore(formData: FormData, key: string): number | null | "ongeldig" {
  const raw = ((formData.get(key) as string) ?? "").trim();
  if (!raw) return null;
  const n = Number(raw.replace(",", "."));
  return Number.isFinite(n) && n >= 1 && n <= 10 ? n : "ongeldig";
}

export async function saveBeoordeling(formData: FormData) {
  const expert = await requireExpert();
  const projectId = Number(formData.get("project_id"));
  // Een admin die meekijkt mag niet namens de expert beoordelen
  if (expert.impersonator) redirect(`/expert?project=${projectId}&error=meekijken`);
  if (!projectId || !magBeoordelen(expert.id, projectId)) redirect("/expert");

  const duur = readScore(formData, "duur_impact");
  const domeinen = readScore(formData, "levensdomeinen");
  const basis = readScore(formData, "basissituatie");
  if (duur === "ongeldig" || domeinen === "ongeldig" || basis === "ongeldig") {
    redirect(`/expert?project=${projectId}&error=score`);
  }
  const rawAdvies = (formData.get("bonus_malus_advies") as string) ?? "";
  const advies = rawAdvies && BONUS_MALUS_OPTIONS.some((o) => o.id === rawAdvies) ? rawAdvies : null;
  const toelichting = ((formData.get("toelichting") as string) ?? "").trim().slice(0, 10_000) || null;

  getDb()
    .prepare(
      `INSERT INTO expert_beoordelingen
         (project_id, expert_id, duur_impact, levensdomeinen, basissituatie, bonus_malus_advies, toelichting)
       VALUES (?, ?, ?, ?, ?, ?, ?)
       ON CONFLICT (project_id, expert_id) DO UPDATE SET
         duur_impact = excluded.duur_impact, levensdomeinen = excluded.levensdomeinen,
         basissituatie = excluded.basissituatie, bonus_malus_advies = excluded.bonus_malus_advies,
         toelichting = excluded.toelichting, updated_at = datetime('now')`
    )
    .run(projectId, expert.id, duur, domeinen, basis, advies, toelichting);

  redirect(`/expert?project=${projectId}&opgeslagen=1`);
}

// Einde van "Inloggen als": terug naar de eigen admin-sessie
export async function stopImpersonation() {
  const user = await getCurrentUser();
  if (!user?.impersonator) redirect("/login");
  await createSession({ userId: user.impersonator.id, email: user.impersonator.email, name: user.impersonator.name });
  redirect("/experts");
}