/**
 * Mapping between the NocoDB "2026 Campground Tickets" table columns, the
 * webhook payload keys, and the view we return to the app.
 *
 * The 2026 table is a clone of the 2025 submission table (per-purchase record
 * with age-bracket headcounts, parking/ice flags, donor flag) PLUS four columns
 * this system adds: Ticket Code, Redeemed, SubmissionKey, LastScanAt.
 *
 * If the real column titles differ, change them here in one place.
 */
export const COL = {
  id: "Id",
  name: "Title", // first column in the 2025 table holds the purchaser name
  email: "Email Address",
  address: "Address",
  isDonor: "Is Donor",
  carParking: "Car Parking",
  rvParking: "RV Parking",
  iceAccess: "Ice Access",
  paymentMethod: "Payment Method",

  // Columns this system adds to the table:
  code: "Ticket Code",
  redeemed: "Redeemed",
  submissionKey: "SubmissionKey",
  lastScanAt: "LastScanAt",
  iceTotal: "Ice Total", // prepaid ice bags
  iceRedeemed: "Ice Redeemed", // bags picked up
} as const;

/** Age-bracket columns, in order. */
export const AGE_COLUMNS = [
  "Ages 0-3",
  "Ages 4-7",
  "Ages 8-12",
  "Ages 13-17",
  "Ages 18-25",
  "Ages 26-45",
  "Ages 46-64",
  "Ages 65+",
] as const;

/** Age brackets admitted free and NOT counted as redeemable tickets. */
export const FREE_AGE_COLUMNS: readonly string[] = ["Ages 0-3"];

export type NocoRecord = Record<string, unknown> & { Id: number };

function num(v: unknown): number {
  const n = Number(v);
  return Number.isFinite(n) ? n : 0;
}

function bool(v: unknown): boolean {
  if (typeof v === "boolean") return v;
  if (typeof v === "number") return v !== 0;
  if (typeof v === "string") return /^(1|true|yes|y|on)$/i.test(v.trim());
  return false;
}

/** Total redeemable tickets = sum of age brackets minus the free ones. */
export function computeTotal(rec: NocoRecord): number {
  let total = 0;
  for (const col of AGE_COLUMNS) {
    if (FREE_AGE_COLUMNS.includes(col)) continue;
    total += num(rec[col]);
  }
  return total;
}

/** Per-bracket breakdown for display. */
export function ageBreakdown(rec: NocoRecord): { bracket: string; count: number; free: boolean }[] {
  return AGE_COLUMNS.map((col) => ({
    bracket: col.replace(/^Ages /, ""),
    count: num(rec[col]),
    free: FREE_AGE_COLUMNS.includes(col),
  })).filter((b) => b.count > 0);
}

export interface ResourceCount {
  total: number;
  redeemed: number;
  remaining: number;
}

export interface TicketView {
  code: string;
  name: string;
  email: string;
  total: number;
  redeemed: number;
  remaining: number;
  ice: ResourceCount;
  extras: {
    carParking: boolean;
    rvParking: boolean;
    iceAccess: boolean;
    isDonor: boolean;
    freeUnder4: number;
  };
  ages: { bracket: string; count: number; free: boolean }[];
}

export function computeIceTotal(rec: NocoRecord): number {
  return num(rec[COL.iceTotal]);
}

export function toView(rec: NocoRecord): TicketView {
  const total = computeTotal(rec);
  const redeemed = num(rec[COL.redeemed]);
  const iceTotal = computeIceTotal(rec);
  const iceRedeemed = num(rec[COL.iceRedeemed]);
  return {
    code: String(rec[COL.code] ?? ""),
    name: String(rec[COL.name] ?? ""),
    email: String(rec[COL.email] ?? ""),
    total,
    redeemed,
    remaining: Math.max(0, total - redeemed),
    ice: {
      total: iceTotal,
      redeemed: iceRedeemed,
      remaining: Math.max(0, iceTotal - iceRedeemed),
    },
    extras: {
      carParking: bool(rec[COL.carParking]),
      rvParking: bool(rec[COL.rvParking]),
      iceAccess: bool(rec[COL.iceAccess]),
      isDonor: bool(rec[COL.isDonor]),
      freeUnder4: num(rec["Ages 0-3"]),
    },
    ages: ageBreakdown(rec),
  };
}

export { num as toNumber, bool as toBool };