import test from "node:test";
import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import { fileURLToPath } from "node:url";
import { DESTINATIONS, LIMITS, REFUSALS, ALLOWED_PORTS, PROTOCOL_VERSION } from "../src/spec.js";

const source = readFileSync(
  fileURLToPath(new URL("../../../devplacepy/services/nodes/spec.py", import.meta.url)),
  "utf8",
);

function evaluate(expression) {
  const clean = expression.replaceAll("_", "").trim();
  assert.match(clean, /^[\d\s*]+$/, expression);
  return clean.split("*").reduce((product, part) => product * Number(part), 1);
}

test("baked allowlist matches the server specification", () => {
  const suffixes = [...source.matchAll(/DestinationSpec\("([^"]+)"/g)].map((match) => match[1]);
  assert.deepEqual(DESTINATIONS.map((item) => item.suffix), suffixes);
});

test("baked ports, protocol and refusal codes match the server specification", () => {
  const ports = /ALLOWED_PORTS = \(([^)]*)\)/.exec(source)[1].split(",").filter(Boolean).map(Number);
  assert.deepEqual([...ALLOWED_PORTS], ports);
  assert.equal(PROTOCOL_VERSION, Number(/PROTOCOL_VERSION = (\d+)/.exec(source)[1]));
  const codes = [...source.matchAll(/RefusalSpec\("([a-z_]+)"/g)].map((match) => match[1]);
  assert.deepEqual(Object.values(REFUSALS).sort(), codes.sort());
});

test("baked limits match the server LimitSpec defaults", () => {
  for (const [key, value] of Object.entries(LIMITS)) {
    const pattern = new RegExp(`^\\s+${key}: int = ([\\d_ *]+)$`, "m");
    const match = pattern.exec(source);
    assert.ok(match, `${key} missing from spec.py`);
    assert.equal(value, evaluate(match[1]), key);
  }
});