"use server";

import { revalidatePath } from "next/cache";
import { z } from "zod";
import { getCurrentUser } from "@/data/auth";
import { deleteRak, insertRak, updateRak, type RakInput } from "@/data/rak";

export type SimpanRakState = {
  ok: boolean;
  error?: string;
  fieldErrors?: { namaRak?: string[] };
  values?: { namaRak?: string };
  idRak?: number;
};

export type HapusRakState = { ok: boolean; error?: string };

const rakSchema = z.object({
  namaRak: z
    .string()
    .trim()
    .min(1, "Nama rak wajib diisi")
    .max(30, "Maksimal 30 karakter"),
});

export async function simpanRak(
  _prevState: SimpanRakState,
  formData: FormData,
): Promise<SimpanRakState> {
  const user = await getCurrentUser();
  const values = {
    namaRak: String(formData.get("namaRak") ?? ""),
  };

  const parsed = rakSchema.safeParse(values);
  if (!parsed.success) {
    return {
      ok: false,
      fieldErrors: z.flattenError(parsed.error).fieldErrors,
      values,
    };
  }

  const input: RakInput = parsed.data;
  const idRaw = String(formData.get("idRak") ?? "");
  const id = idRaw ? Number.parseInt(idRaw, 10) : null;
  if (id !== null && (!Number.isSafeInteger(id) || id <= 0)) {
    return { ok: false, error: "ID rak tidak valid", values };
  }

  try {
    if (id !== null) {
      const updated = await updateRak(id, input);
      if (!updated) {
        return { ok: false, error: "Rak tidak ditemukan", values };
      }
      revalidatePath("/master/rak");
      return { ok: true, idRak: id };
    }

    const idBaru = await insertRak(input);
    revalidatePath("/master/rak");
    return { ok: true, idRak: idBaru };
  } catch (error) {
    console.error(
      "[simpanRak] gagal",
      {
        userId: user.id,
        idRak: id ?? "(baru)",
        nama: input.namaRak,
      },
      error,
    );
    return {
      ok: false,
      error: "Gagal menyimpan rak, coba simpan ulang",
      values,
    };
  }
}

export async function hapusRak(
  _prevState: HapusRakState,
  formData: FormData,
): Promise<HapusRakState> {
  const user = await getCurrentUser();

  const id = Number.parseInt(String(formData.get("idRak") ?? ""), 10);
  if (!Number.isSafeInteger(id) || id <= 0) {
    return { ok: false, error: "ID rak tidak ada" };
  }

  try {
    const deleted = await deleteRak(id);
    if (!deleted) {
      return { ok: false, error: "Rak tidak ditemukan" };
    }
    revalidatePath("/master/rak");
    return { ok: true };
  } catch (error) {
    console.error("[hapusRak] gagal", { userId: user.id, id }, error);
    return {
      ok: false,
      error: "Gagal menghapus rak, coba hapus ulang",
    };
  }
}