import { authenticate } from "../shopify.server";
import { ensureShop, loadShopConfig } from "../services/config.server";
import { features } from "../services/plans";

/**
 * Authenticate an embedded admin request and load the shop's config + plan features.
 * If the shop record is missing or marked uninstalled (afterAuth didn't run or failed, or a
 * reinstall), create/revive it here so the merchant never lands on a 404.
 */
export async function adminContext(request: Request, opts: { fresh?: boolean } = {}) {
  const ctx = await authenticate.admin(request);
  const cfg = await loadShopConfig(ctx.session.shop, opts).catch(async (e: unknown) => {
    if (!(e instanceof Response) || e.status !== 404) throw e;
    await ensureShop(ctx.session.shop, ctx.admin);
    return loadShopConfig(ctx.session.shop, { fresh: true });
  });
  return { ...ctx, cfg, features: features(cfg.shop.plan), actor: `merchant:${ctx.session.onlineAccessInfo?.associated_user?.email ?? "staff"}` };
}

export function formString(fd: FormData, k: string): string {
  const v = fd.get(k);
  return typeof v === "string" ? v.trim() : "";
}
export function formInt(fd: FormData, k: string): number | null {
  const s = formString(fd, k);
  if (s === "") return null;
  const n = Number(s);
  return Number.isFinite(n) ? Math.round(n) : null;
}
export function formMoney(fd: FormData, k: string): number | null {
  const s = formString(fd, k);
  if (s === "") return null;
  const n = Number(s.replace(/[$,]/g, ""));
  return Number.isFinite(n) ? Math.round(n * 100) : null;
}
export const formBool = (fd: FormData, k: string) => ["on", "true", "1"].includes(formString(fd, k));
export const formList = (fd: FormData, k: string) =>
  formString(fd, k)
    .split(/[,\n]/)
    .map((s) => s.trim())
    .filter(Boolean);

/** "10:00-13:00, 14:00-18:00" → ranges; throws on bad input. */
export function parseRanges(s: string): { start: string; end: string }[] {
  if (!s.trim()) return [];
  return s.split(",").map((part) => {
    const m = part.trim().match(/^(\d{1,2}):(\d{2})\s*[-–]\s*(\d{1,2}):(\d{2})$/);
    if (!m) throw new Error(`"${part.trim()}" isn't a time range like 10:00-13:00`);
    const pad = (h: string) => h.padStart(2, "0");
    const start = `${pad(m[1])}:${m[2]}`;
    const end = `${pad(m[3])}:${m[4]}`;
    if (start >= end) throw new Error(`${start}–${end}: end must be after start`);
    return { start, end };
  });
}