import type { RomClassId } from "../app/characterCatalog";
import compactGearCurves from "./generated/romNativeGearCurves.generated.json";
import { normalizeRomNativeGearStats, type RomNativeGearStats } from "./romNativeStatsTypes";

export type RomNativeGearSlot =
  | "head" | "neck" | "shoulder" | "back" | "chest" | "wrist" | "hands" | "waist" | "legs" | "feet"
  | "finger" | "trinket" | "main-hand" | "off-hand" | "ranged";

interface CompactCurveCatalog {
  readonly status: string;
  readonly profiles: Readonly<Record<string, Readonly<Record<string, readonly (unknown | { readonly stats?: unknown })[]>>>>;
}

const catalog = compactGearCurves as unknown as CompactCurveCatalog;
export const ROM_NATIVE_GEAR_REFERENCE_STATUS = catalog.status;
export const ROM_NATIVE_GEAR_REFERENCE_CLASSES = Object.freeze(Object.keys(catalog.profiles) as RomClassId[]);

/** Returns only compact, source-selected native reference values; unsupported class/slot pairs have no payload. */
export function romNativeGearReference(
  classId: RomClassId,
  slot: RomNativeGearSlot,
  level: number,
): RomNativeGearStats | null {
  const curve = catalog.profiles[classId]?.[slot];
  if (!curve) return null;
  const safeLevel = Math.max(1, Math.min(79, Math.trunc(Number.isFinite(level) ? level : 1)));
  const entry = curve[safeLevel - 1];
  const raw = entry && typeof entry === "object" && "stats" in entry ? entry.stats : entry;
  return normalizeRomNativeGearStats(raw) ?? null;
}