// Copyright (c) 2020, 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 'dart:io';

import 'package:args/command_runner.dart';
import 'package:dartdev/dartdev.dart';
import 'package:test/test.dart';

import '../utils.dart';

void main() {
  group('command', command, timeout: longTimeout);
  group('flag', help, timeout: longTimeout);
}

void command() {
  // For each command description, assert that the values are not empty, don't
  // have trailing white space and end with a period.
  test('description formatting', () {
    DartdevRunner(['--disable-dartdev-analytics'])
        .commands
        .forEach((String commandKey, Command command) {
      expect(commandKey, isNotEmpty);
      expect(command.description, isNotEmpty);
      expect(command.description.split('\n').first, endsWith('.'));
      expect(command.description.trim(), equals(command.description));
    });
  });

  // Assert that all found usageLineLengths are the same and null
  test('argParser usageLineLength', () {
    DartdevRunner(['--disable-dartdev-analytics'])
        .commands
        .forEach((String commandKey, Command command) {
      if (command.argParser != null) {
        if (command.name != 'help' &&
            command.name != 'format' &&
            command.name != 'migrate' &&
            command.name != 'pub') {
          expect(command.argParser.usageLineLength,
              stdout.hasTerminal ? stdout.terminalColumns : null);
        } else {
          expect(command.argParser.usageLineLength, isNull);
        }
      }
    });
  });
}

void help() {
  TestProject p;

  tearDown(() => p?.dispose());

  test('--help', () {
    p = project();
    var result = p.runSync('--help', []);

    expect(result.exitCode, 0);
    expect(result.stderr, isEmpty);
    expect(result.stdout, contains(DartdevRunner.dartdevDescription));
    expect(result.stdout,
        contains('Usage: dart [<vm-flags>] <command|dart-file> [<arguments>]'));
    expect(result.stdout, contains('Global options:'));
    expect(result.stdout, contains('Available commands:'));
    expect(result.stdout, contains('analyze '));
    expect(result.stdout, contains('create '));
    expect(result.stdout, contains('compile '));
    expect(result.stdout, contains('format '));
    expect(result.stdout, contains('migrate '));
  });

  test('--help --verbose', () {
    p = project();
    var result = p.runSync('--help', ['--verbose']);

    expect(result.exitCode, 0);
    expect(result.stdout, isEmpty);
    expect(result.stderr,
        contains('The following options are only used for VM development'));
  });

  test('--help -v', () {
    p = project();
    var result = p.runSync('--help', ['-v']);

    expect(result.exitCode, 0);
    expect(result.stdout, isEmpty);
    expect(result.stderr,
        contains('The following options are only used for VM development'));
  });

  test('help', () {
    p = project();
    var result = p.runSync('help', []);

    expect(result.exitCode, 0);
    expect(result.stderr, isEmpty);
    expect(result.stdout, contains(DartdevRunner.dartdevDescription));
    expect(result.stdout,
        contains('Usage: dart [<vm-flags>] <command|dart-file> [<arguments>]'));
    expect(result.stdout, contains('Global options:'));
    expect(result.stdout, contains('Available commands:'));
    expect(result.stdout, contains('analyze '));
    expect(result.stdout, contains('create '));
    expect(result.stdout, contains('compile '));
    expect(result.stdout, contains('format '));
    expect(result.stdout, contains('migrate '));
  });

  test('help --verbose', () {
    p = project();
    var result = p.runSync('help', ['--verbose']);

    expect(result.exitCode, 0);
    expect(result.stdout, contains('migrate '));
  });

  test('help -v', () {
    p = project();
    var result = p.runSync('help', ['-v']);

    expect(result.exitCode, 0);
    expect(result.stdout, contains('migrate '));
  });
}