// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'dart:convert';
import 'dart:io' as io;

import 'package:file/file.dart';
import 'package:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/logger.dart';
import 'package:flutter_tools/src/base/terminal.dart';
import 'package:flutter_tools/src/ios/plist_parser.dart';
import 'package:platform/platform.dart';
import 'package:process/process.dart';

import '../../src/common.dart';
import '../../src/context.dart';

const String base64PlistXml =
    'PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0I'
    'FBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VOIiAiaHR0cDovL3d3dy5hcHBsZS'
    '5jb20vRFREcy9Qcm9wZXJ0eUxpc3QtMS4wLmR0ZCI+CjxwbGlzdCB2ZXJzaW9uPSIxLjAiPgo'
    '8ZGljdD4KICA8a2V5PkNGQnVuZGxlRXhlY3V0YWJsZTwva2V5PgogIDxzdHJpbmc+QXBwPC9z'
    'dHJpbmc+CiAgPGtleT5DRkJ1bmRsZUlkZW50aWZpZXI8L2tleT4KICA8c3RyaW5nPmlvLmZsd'
    'XR0ZXIuZmx1dHRlci5hcHA8L3N0cmluZz4KPC9kaWN0Pgo8L3BsaXN0Pgo=';

const String base64PlistBinary =
    'YnBsaXN0MDDSAQIDBF8QEkNGQnVuZGxlRXhlY3V0YWJsZV8QEkNGQnVuZGxlSWRlbnRpZmllc'
    'lNBcHBfEBZpby5mbHV0dGVyLmZsdXR0ZXIuYXBwCA0iNzsAAAAAAAABAQAAAAAAAAAFAAAAAA'
    'AAAAAAAAAAAAAAVA==';

const String base64PlistJson =
    'eyJDRkJ1bmRsZUV4ZWN1dGFibGUiOiJBcHAiLCJDRkJ1bmRsZUlkZW50aWZpZXIiOiJpby5mb'
    'HV0dGVyLmZsdXR0ZXIuYXBwIn0=';

void main() {
  // The tests herein explicitly don't use `MemoryFileSystem` or a mocked
  // `ProcessManager` because doing so wouldn't actually test what we want to
  // test, which is that the underlying tool we're using to parse Plist files
  // works with the way we're calling it.
  FileSystem fileSystem;
  ProcessManager processManager;
  File file;
  PlistParser parser;
  BufferLogger logger;

  setUp(() {
    logger = BufferLogger(
      outputPreferences: OutputPreferences.test(),
      terminal: AnsiTerminal(
        platform: const LocalPlatform(),
        stdio: null,
      ),
    );
    fileSystem = const LocalFileSystemBlockingSetCurrentDirectory();
    processManager = const LocalProcessManager();
    parser = PlistParser(
      fileSystem: fileSystem,
      processManager: processManager,
      logger: logger,
    );
    file = fileSystem.file('foo.plist')..createSync();
  });

  tearDown(() {
    file.deleteSync();
  });

  testWithoutContext('PlistParser.getValueFromFile works with xml file', () {
    file.writeAsBytesSync(base64.decode(base64PlistXml));

    expect(parser.getValueFromFile(file.path, 'CFBundleIdentifier'), 'io.flutter.flutter.app');
    expect(parser.getValueFromFile(file.absolute.path, 'CFBundleIdentifier'), 'io.flutter.flutter.app');
    expect(logger.statusText, isEmpty);
    expect(logger.errorText, isEmpty);
  }, skip: !io.Platform.isMacOS);

  testWithoutContext('PlistParser.getValueFromFile works with binary file', () {
    file.writeAsBytesSync(base64.decode(base64PlistBinary));

    expect(parser.getValueFromFile(file.path, 'CFBundleIdentifier'), 'io.flutter.flutter.app');
    expect(parser.getValueFromFile(file.absolute.path, 'CFBundleIdentifier'), 'io.flutter.flutter.app');
    expect(logger.statusText, isEmpty);
    expect(logger.errorText, isEmpty);
  }, skip: !io.Platform.isMacOS);

  testWithoutContext('PlistParser.getValueFromFile works with json file', () {
    file.writeAsBytesSync(base64.decode(base64PlistJson));

    expect(parser.getValueFromFile(file.path, 'CFBundleIdentifier'), 'io.flutter.flutter.app');
    expect(parser.getValueFromFile(file.absolute.path, 'CFBundleIdentifier'), 'io.flutter.flutter.app');
    expect(logger.statusText, isEmpty);
    expect(logger.errorText, isEmpty);
  }, skip: !io.Platform.isMacOS);

  testWithoutContext('PlistParser.getValueFromFile returns null for non-existent plist file', () {
    expect(parser.getValueFromFile('missing.plist', 'CFBundleIdentifier'), null);
    expect(logger.statusText, isEmpty);
    expect(logger.errorText, isEmpty);
  }, skip: !io.Platform.isMacOS);

  testWithoutContext('PlistParser.getValueFromFile returns null for non-existent key within plist', () {
    file.writeAsBytesSync(base64.decode(base64PlistXml));

    expect(parser.getValueFromFile(file.path, 'BadKey'), null);
    expect(parser.getValueFromFile(file.absolute.path, 'BadKey'), null);
    expect(logger.statusText, isEmpty);
    expect(logger.errorText, isEmpty);
  }, skip: !io.Platform.isMacOS);

  testWithoutContext('PlistParser.getValueFromFile returns null for malformed plist file', () {
    file.writeAsBytesSync(const <int>[1, 2, 3, 4, 5, 6]);

    expect(parser.getValueFromFile(file.path, 'CFBundleIdentifier'), null);
    expect(logger.statusText, isNotEmpty);
    expect(logger.errorText, isEmpty);
  }, skip: !io.Platform.isMacOS);

  testWithoutContext('PlistParser.getValueFromFile throws when /usr/bin/plutil is not found', () async {
    expect(
      () => parser.getValueFromFile('irrelevant.plist', 'ununsed'),
      throwsA(isA<FileNotFoundException>()),
    );
    expect(logger.statusText, isEmpty);
    expect(logger.errorText, isEmpty);
  }, skip: io.Platform.isMacOS);
}