import type { Service } from "@/domain/services/types/service";
import type { WOType } from "@/domain/work-orders/types/work-order-wizard";

function asRecord(raw: unknown): Record<string, unknown> {
  return typeof raw === "object" && raw !== null ? (raw as Record<string, unknown>) : {};
}

function readId(item: Record<string, unknown>): string | number {
  const value = item.id ?? item.Id;
  return typeof value === "string" || typeof value === "number" ? value : "";
}

function readString(item: Record<string, unknown>, ...keys: string[]): string {
  for (const key of keys) {
    const value = item[key];
    if (typeof value === "string") return value.trim();
  }
  return "";
}

function readBool(item: Record<string, unknown>, ...keys: string[]): boolean {
  for (const key of keys) {
    const value = item[key];
    if (typeof value === "boolean") return value;
  }
  return false;
}

function mapWorkOrderType(value: unknown): WOType | null {
  if (typeof value === "number") {
    return value === 2 ? "PM" : value === 3 ? "Emergency" : value === 6 ? "Reactive" : null;
  }
  if (typeof value === "string") {
    const normalized = value.trim().toLowerCase();
    return normalized === "pm" || normalized === "preventivemaintenance"
      ? "PM"
      : normalized === "emergency"
        ? "Emergency"
        : normalized === "reactive"
          ? "Reactive"
          : null;
  }
  return null;
}

export function mapService(raw: unknown): Service {
  const item = asRecord(raw);
  const types = item.supportedWorkOrderTypes ?? item.SupportedWorkOrderTypes;
  return {
    id: readId(item),
    name: readString(item, "name", "Name"),
    trade: readString(item, "trade", "Trade"),
    iconKey: readString(item, "iconKey", "IconKey"),
    requiresCompletionDocument: readBool(
      item,
      "requiresCompletionDocument",
      "RequiresCompletionDocument",
    ),
    isActive: readBool(item, "isActive", "IsActive"),
    supportedWorkOrderTypes: Array.isArray(types)
      ? types.flatMap((value) => {
          const mapped = mapWorkOrderType(value);
          return mapped ? [mapped] : [];
        })
      : [],
  };
}

export function mapServices(raw: unknown): Service[] {
  return Array.isArray(raw) ? raw.map(mapService).filter((service) => service.id !== "") : [];
}