import { describe, expect, test } from "bun:test";
import { readdirSync, readFileSync } from "node:fs";
import { join } from "node:path";
import { isReservedName } from "./reserved-names";

const SRC = join(import.meta.dir, "..");

function topLevelRouteSegments(): string[] {
  return readdirSync(join(SRC, "routes"))
    .filter((file) => file.endsWith(".tsx") && !file.startsWith("$") && !file.startsWith("__"))
    .map((file) => file.split(".")[0].replace(/_$/, ""))
    .filter((segment) => segment !== "index");
}

function linkedPages(): string[] {
  const files = ["lib/legal.ts", "components/SiteFooter.tsx", "components/SiteHeader.tsx", "lib/marketing/catalog.ts"];
  const segments = new Set<string>();
  for (const file of files) {
    for (const match of readFileSync(join(SRC, file), "utf8").matchAll(/["'`]\/([a-z][a-z0-9-]*)/g)) {
      segments.add(match[1]);
    }
  }
  return [...segments];
}

describe("reserved account names", () => {
  test("every top-level route is reserved", () => {
    const missing = topLevelRouteSegments().filter((segment) => !isReservedName(segment));
    expect(missing).toEqual([]);
  });

  test("every page linked from the footer, header and marketing catalog is reserved", () => {
    const missing = linkedPages().filter((segment) => !isReservedName(segment));
    expect(missing).toEqual([]);
  });

  test("raw handler prefixes and special accounts are reserved", () => {
    for (const name of [
      "ingest",
      "mcp",
      "camo",
      "og",
      "site",
      "feature",
      "stripe",
      "email",
      "workbench",
      "ghost",
      "oauth",
      "api",
      "auth",
    ]) {
      expect(isReservedName(name)).toBe(true);
    }
  });

  test("matching is case-insensitive", () => {
    expect(isReservedName("Ingest")).toBe(true);
    expect(isReservedName("GHOST")).toBe(true);
  });
});