// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import "package:expect/expect.dart";

testNormalizePath() {
  test(String expected, String path, {String? scheme, String? host}) {
    var uri = new Uri(scheme: scheme, host: host, path: path);
    Expect.equals(expected, uri.toString());
    if (scheme == null && host == null) {
      Expect.equals(expected, uri.path);
    }
  }

  var unreserved = "-._~0123456789"
      "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
      "abcdefghijklmnopqrstuvwxyz";

  test("A", "%41");
  test("AB", "%41%42");
  test("%40AB", "%40%41%42");
  test("a", "%61");
  test("ab", "%61%62");
  test("%60ab", "%60%61%62");
  test(unreserved, unreserved);

  var x = new StringBuffer();
  for (int i = 32; i < 128; i++) {
    if (unreserved.indexOf(new String.fromCharCode(i)) != -1) {
      x.writeCharCode(i);
    } else {
      x.write("%");
      x.write(i.toRadixString(16));
    }
  }
  Expect.equals(x.toString().toUpperCase(),
      new Uri(path: x.toString()).toString().toUpperCase());

  // Normalized paths.

  // Full absolute path normalization for absolute paths.
  test("/a/b/c/", "/../a/./b/z/../c/d/..");
  test("/a/b/c/", "/./a/b/c/");
  test("/a/b/c/", "/./../a/b/c/");
  test("/a/b/c/", "/./../a/b/c/.");
  test("/a/b/c/", "/./../a/b/c/z/./..");
  test("/", "/a/..");
  // Full absolute path normalization for URIs with scheme.
  test("s:a/b/c/", "../a/./b/z/../c/d/..", scheme: "s");
  test("s:a/b/c/", "./a/b/c/", scheme: "s");
  test("s:a/b/c/", "./../a/b/c/", scheme: "s");
  test("s:a/b/c/", "./../a/b/c/.", scheme: "s");
  test("s:a/b/c/", "./../a/b/c/z/./..", scheme: "s");
  test("s:/", "/a/..", scheme: "s");
  test("s:/", "a/..", scheme: "s");
  // Full absolute path normalization for URIs with authority.
  test("//h/a/b/c/", "../a/./b/z/../c/d/..", host: "h");
  test("//h/a/b/c/", "./a/b/c/", host: "h");
  test("//h/a/b/c/", "./../a/b/c/", host: "h");
  test("//h/a/b/c/", "./../a/b/c/.", host: "h");
  test("//h/a/b/c/", "./../a/b/c/z/./..", host: "h");
  test("//h/", "/a/..", host: "h");
  test("//h/", "a/..", host: "h");
  // Partial relative normalization (allowing leading .. or ./ for current dir).
  test("../a/b/c/", "../a/./b/z/../c/d/..");
  test("a/b/c/", "./a/b/c/");
  test("../a/b/c/", "./../a/b/c/");
  test("../a/b/c/", "./../a/b/c/.");
  test("../a/b/c/", "./../a/b/c/z/./..");
  test("/", "/a/..");
  test("./", "a/..");
}

void testNormalizeResolve() {
  var uri = Uri.parse("scheme://user:pass@example.com:1/path/?query#fragment");

  var nonCanon = NonCanonicalizingUri();

  nonCanon
    ..fragment = "fr%61gment"
    ..hasFragment = true;
  Expect.equals(uri, uri.resolveUri(nonCanon));

  nonCanon
    ..query = "qu%65ry"
    ..hasQuery = true;
  Expect.equals(uri, uri.resolveUri(nonCanon));

  nonCanon..path = "/p%61th/";
  Expect.equals(uri, uri.resolveUri(nonCanon));
  nonCanon..path = "../p%61th/";
  Expect.equals(uri, uri.resolveUri(nonCanon));

  nonCanon
    ..hasAuthority = true
    ..hasUserInfo = true
    ..userInfo = "us%65r:pass"
    ..host = "ex%41mple.com"
    ..hasPort = true
    ..port = 1;
  Expect.equals(uri, uri.resolveUri(nonCanon));

  nonCanon
    ..hasScheme = true
    ..scheme = "schEme";
  Expect.equals(uri, uri.resolveUri(nonCanon));
}

main() {
  testNormalizePath();
  testNormalizeResolve();
}

class NonCanonicalizingUri implements Uri {
  String scheme = "";
  String userInfo = "";
  String host = "";
  int port = 0;
  String path = "";
  String query = "";
  String fragment = "";
  bool hasScheme = false;
  bool hasAuthority = false;
  bool hasUserInfo = false;
  bool hasPort = false;
  bool hasQuery = false;
  bool hasFragment = false;

  bool get hasEmptyPath => path.isEmpty;
  bool get hasAbsolutePath => path.startsWith("/") || isScheme("file");
  bool isScheme(String scheme) =>
      scheme.toLowerCase() == Uri.decodeComponent(this.scheme).toLowerCase();

  Uri normalize() => this; // Na-ah!

  List<String> get pathSegments => path.split("/");

  String toString() => "${hasScheme ? "$scheme:" : ""}"
      "${hasAuthority ? "//${hasUserInfo ? "$userInfo@" : ""}"
          "$host"
          "${hasPort ? ":$port" : ""}" : ""}"
      "$path${hasQuery ? "?$query" : ""}${hasFragment ? "#$fragment" : ""}";

  int get hashCode => toString().hashCode;
  bool operator ==(Object other) =>
      other is Uri && toString() == other.toString();

  Object? noSuchMethod(i) => super.noSuchMethod(i);
}