import { ZodError } from "zod";
import { LOTSE_ERROR_CODES, type LotseActionErrorCode, type LotseActionState } from "@/lib/lotse/action-state";
import { ServiceError } from "@/server/services/context";
import { ForbiddenError } from "@/server/rbac";
import { ModuleDisabledError } from "@/server/modules";

/** Map thrown errors of Lotse actions to a displayable state (plain-language message key, no internals). */
export function lotseErrorState(err: unknown): LotseActionState {
  const at = Date.now();
  if (err instanceof ServiceError) {
    const reason = (err.details as { reason?: string } | undefined)?.reason;
    const code = reason && (LOTSE_ERROR_CODES as readonly string[]).includes(reason) ? (reason as LotseActionErrorCode) : err.code === "blocked" ? "not_editable" : err.code;
    return { status: "error", code, at };
  }
  if (err instanceof ModuleDisabledError) return { status: "error", code: "disabled", at };
  if (err instanceof ZodError) return { status: "error", code: "invalid", at };
  if (err instanceof ForbiddenError) return { status: "error", code: "forbidden", at };
  console.error("[actions/lotse]", err);
  return { status: "error", code: "generic", at };
}

export const str = (fd: FormData, key: string): string | undefined => {
  const v = fd.get(key);
  return typeof v === "string" ? v : undefined;
};