// Runs every check. Exits non-zero if any assertion failed.
//
//   nix develop -c node checks/run.mjs
//
// These sit beside the Go tests rather than replacing them: the server has
// `go test`, and this is the frontend's half — the arithmetic behind the
// charts, the structure of the markup, and the width budgets that no one here
// can see. It needs no build step and no dependencies; node is already in the
// devShell for `node --check`.
import { execFileSync } from "node:child_process";
import { fileURLToPath } from "node:url";
import { dirname, join } from "node:path";
import { readdirSync } from "node:fs";

const here = dirname(fileURLToPath(import.meta.url));
const root = join(here, "..");

let failed = 0;

// The frontend has no build step, so a syntax error would otherwise only show
// up in a browser nobody here is running.
for (const file of ["app.js", "sw.js"]) {
  try {
    execFileSync(process.execPath, ["--check", join(root, "src", file)], { stdio: "pipe" });
    console.log(`  ok   src/${file} parses`);
  } catch (e) {
    console.log(`  FAIL src/${file}\n${e.stderr?.toString() ?? e.message}`);
    failed++;
  }
}
try {
  JSON.parse(readdirSync(join(root, "src")).includes("changelog.json")
    ? (await import("node:fs")).readFileSync(join(root, "src", "changelog.json"), "utf8")
    : "[]");
  console.log("  ok   src/changelog.json parses");
} catch (e) {
  console.log(`  FAIL src/changelog.json: ${e.message}`);
  failed++;
}

const suites = readdirSync(here)
  .filter(f => f.endsWith(".mjs") && !["run.mjs", "extract.mjs", "assert.mjs"].includes(f))
  .sort();

for (const file of suites) {
  const mod = await import(join(here, file));
  failed += mod.default ?? 0;
}

console.log(failed === 0
  ? `\nall checks passed (${suites.length} suites)`
  : `\n${failed} assertion(s) FAILED`);
process.exit(failed === 0 ? 0 : 1);