// Временная точка проверки: валидация script.js + data.json при старте.
try {
  require("./script.js");
} catch (e) {
  console.error("SYNTAX-FAIL script.js: " + e.message);
  process.exit(1);
}
try {
  const d = require("./data.json");
  if (!Array.isArray(d.rows) || !d.rows.length) throw new Error("data.json: нет rows");
  const n = d.rows.length;
  const t25 = d.rows.reduce((a, r) => a + (r.y2025 || 0), 0);
  console.log("CHECK: syntax OK, data.json rows: " + n + ", 2025 total: " + Math.round(t25).toLocaleString("ru-RU"));
} catch (e) {
  console.error("DATA-FAIL: " + e.message);
  process.exit(1);
}
const http = require("http");
const fs = require("fs");
const path = require("path");
const srv = http.createServer((req, res) => {
  const url = req.url.split("?")[0];
  if (url === "/" || url === "/index.html") {
    res.writeHead(200, { "Content-Type": "text/html; charset=utf-8" });
    return fs.createReadStream(path.join(__dirname, "index.html")).pipe(res);
  }
  if (url === "/presentation.html") {
    res.writeHead(200, { "Content-Type": "text/html; charset=utf-8" });
    return fs.createReadStream(path.join(__dirname, "presentation.html")).pipe(res);
  }
  if (url === "/data.json") {
    res.writeHead(200, { "Content-Type": "application/json" });
    return fs.createReadStream(path.join(__dirname, "data.json")).pipe(res);
  }
  // Отчёт — xlsx. Отдаём как приложение, чтобы браузер скачал, а не попробовал показать.
  const m = url.match(/^\/([^\/]+\.(xlsx|csv|json|html|js|css))/i);
  if (m) {
    const file = path.basename(decodeURIComponent(m[1]));
    const fp = path.join(__dirname, file);
    if (fs.existsSync(fp)) {
      const ct =
        file.toLowerCase().endsWith(".xlsx") ? "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" :
        file.toLowerCase().endsWith(".csv") ? "text/csv; charset=utf-8" :
        file.toLowerCase().endsWith(".json") ? "application/json" :
        file.toLowerCase().endsWith(".js") ? "text/javascript" :
        file.toLowerCase().endsWith(".css") ? "text/css" : "text/html";
      res.writeHead(200, {
        "Content-Type": ct,
        "Content-Disposition": 'attachment; filename="' + encodeURIComponent(file) + '"'
      });
      return fs.createReadStream(fp).pipe(res);
    }
  }
  res.writeHead(404);
  res.end("not found");
});
srv.listen(process.env.PORT || 3000, () => {
  console.log("server on port " + (process.env.PORT || 3000));
});