package com.android.dialer.helpdesk.http;

import java.util.Map;

/** Standalone off-device test for {@link DeviceAuthSigner} (plain JDK, no Android, no JUnit). */
public class DeviceAuthSignerTest {
  static int pass = 0, fail = 0;
  static void ok(String d) { pass++; System.out.println("  ok  " + d); }
  static void bad(String d, Object got) { fail++; System.out.println("  FAIL " + d + "  (got: " + got + ")"); }
  static void eq(Object a, Object b, String d) { if (a == null ? b == null : a.equals(b)) ok(d); else bad(d, a); }
  static void truthy(boolean x, String d) { if (x) ok(d); else bad(d, x); }

  public static void main(String[] args) {
    DeviceAuthSigner s = new DeviceAuthSigner("dev-device-token", "dev-device-secret");
    String body = "{\"call_id\":\"c1\"}";
    long ts = 1751932800L;
    String nonce = "n0nce123";
    Map<String, String> h = s.headers(body, ts, nonce);

    eq(h.get("Authorization"), "Bearer dev-device-token", "Authorization: Bearer <token>");
    eq(h.get("X-Request-Ts"), "1751932800", "X-Request-Ts is unix seconds");
    eq(h.get("X-Request-Nonce"), "n0nce123", "X-Request-Nonce echoed");
    String sig = h.get("X-Signature");
    truthy(sig != null && sig.matches("[0-9a-f]{64}"), "X-Signature is 64 lowercase hex");
    truthy(s.headers((String) null, ts, nonce).get("X-Signature") != null, "null body signs as empty (server sees \"\")");
    truthy(!s.newNonce().equals(s.newNonce()), "newNonce() is random");
    truthy(s.newNonce().matches("[0-9a-f]{32}"), "newNonce() is 128-bit hex");
    // String and byte[] overloads agree for an ASCII body
    String sigBytes = s.headers(body.getBytes(java.nio.charset.StandardCharsets.UTF_8), ts, nonce).get("X-Signature");
    eq(sigBytes, sig, "byte[] overload == String overload for ASCII body");

    // UTF-8 Czech body via the byte[] path (ě = ě) — emitted for the harness's Ruby cross-check
    String cz = "{\"notes\":\"Děkujeme\"}";
    String sigCz = s.headers(cz.getBytes(java.nio.charset.StandardCharsets.UTF_8), ts, nonce).get("X-Signature");

    System.out.println("SIG=" + sig);       // ASCII body cross-check
    System.out.println("SIG_CZ=" + sigCz);  // UTF-8 body cross-check
    System.out.println("\n" + pass + " passed, " + fail + " failed");
    System.exit(fail == 0 ? 0 : 1);
  }
}