// Resolve o alias "@/" e imports sem extensão do projeto, para que os testes
// importem módulos reais (inclusive Route Handlers do Next.js) com o type
// stripping nativo do Node. Requer Node >= 22.15 (module.registerHooks).
import { existsSync, statSync } from "node:fs";
import { registerHooks } from "node:module";
import { fileURLToPath, pathToFileURL } from "node:url";

const ROOT = new URL("../../", import.meta.url);
const SUFFIXES = ["", ".ts", ".tsx", ".js", "/index.ts", "/index.js"];

function findFile(base) {
  for (const suffix of SUFFIXES) {
    const candidate = base + suffix;
    if (existsSync(candidate) && statSync(candidate).isFile()) return candidate;
  }
  return null;
}

registerHooks({
  resolve(specifier, context, nextResolve) {
    if (specifier.startsWith("@/")) {
      const found = findFile(fileURLToPath(new URL(specifier.slice(2), ROOT)));
      if (found) return nextResolve(pathToFileURL(found).href, context);
    }
    try {
      return nextResolve(specifier, context);
    } catch (error) {
      const code = error?.code;
      if (code !== "ERR_MODULE_NOT_FOUND" && code !== "ERR_UNSUPPORTED_DIR_IMPORT") throw error;
      if (specifier.startsWith(".") && context.parentURL) {
        const found = findFile(fileURLToPath(new URL(specifier, context.parentURL)));
        if (found) return nextResolve(pathToFileURL(found).href, context);
      }
      // Subcaminho de pacote CJS sem exports, como "next/server".
      if (!specifier.startsWith(".") && !specifier.startsWith("node:")) {
        return nextResolve(`${specifier}.js`, context);
      }
      throw error;
    }
  },
});