// Copyright (c) 2014, 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:analysis_server/src/provisional/completion/dart/completion_dart.dart';
import 'package:analysis_server/src/services/completion/dart/arglist_contributor.dart';
import 'package:analysis_server/src/services/completion/dart/completion_manager.dart';
import 'package:analysis_server/src/services/completion/dart/suggestion_builder.dart';
import 'package:analyzer_utilities/check/check.dart';
import 'package:test_reflective_loader/test_reflective_loader.dart';

import 'completion_check.dart';
import 'completion_contributor_util.dart';

void main() {
  defineReflectiveSuite(() {
    defineReflectiveTests(ArgListContributorTest);
  });
}

mixin ArgListContributorMixin on DartCompletionContributorTest {
  @override
  DartCompletionContributor createContributor(
    DartCompletionRequest request,
    SuggestionBuilder builder,
  ) {
    return ArgListContributor(request, builder);
  }
}

@reflectiveTest
class ArgListContributorTest extends DartCompletionContributorTest
    with ArgListContributorMixin {
  Future<void> test_fieldFormal_documentation() async {
    var content = '''
class A {
  /// aaa
  ///
  /// bbb
  /// ccc
  int fff;
  A({this.fff});
}
main() {
  new A(^);
}
''';
    addTestSource(content);

    var response = await computeSuggestions2();
    _checkNamedArguments(response).matchesInAnyOrder([
      (suggestion) => suggestion
        ..completion.isEqualTo('fff: ')
        ..docComplete.isEqualTo('aaa\n\nbbb\nccc')
        ..docSummary.isEqualTo('aaa')
        ..hasSelection(offset: 5)
        ..element.isNotNull.which((e) => e
          ..kind.isParameter
          ..name.isEqualTo('fff'))
    ]);
  }

  Future<void> test_fieldFormal_noDocumentation() async {
    addTestSource('''
class A {
  int fff;
  A({this.fff});
}
main() {
  new A(^);
}
''');

    var response = await computeSuggestions2();
    _checkNamedArguments(response).matchesInAnyOrder([
      (suggestion) => suggestion
        ..completion.isEqualTo('fff: ')
        ..docComplete.isNull
        ..docSummary.isNull
        ..hasSelection(offset: 5)
        ..element.isNotNull.which((e) => e
          ..kind.isParameter
          ..name.isEqualTo('fff'))
    ]);
  }

  Future<void> test_flutter_InstanceCreationExpression_0() async {
    writeTestPackageConfig(flutter: true);

    addTestSource('''
import 'package:flutter/widgets.dart';

build() => new Row(
    ^
  );
''');

    var response = await computeSuggestions2();
    _checkNamedArguments(response).containsMatch((suggestion) {
      suggestion
        ..completion.isEqualTo('children: [],')
        ..defaultArgumentListString.isNull
        ..hasSelection(offset: 11);
    });
  }

  Future<void> test_flutter_InstanceCreationExpression_01() async {
    writeTestPackageConfig(flutter: true);

    addTestSource('''
import 'package:flutter/material.dart';

  build() => new Scaffold(
        appBar: new AppBar(
          ^
        ),
  );
''');

    var response = await computeSuggestions2();
    _checkNamedArguments(response).containsMatch((suggestion) {
      suggestion
        ..completion.isEqualTo('backgroundColor: ,')
        ..defaultArgumentListString.isNull
        ..hasSelection(offset: 17);
    });
  }

  Future<void> test_flutter_InstanceCreationExpression_1() async {
    writeTestPackageConfig(flutter: true);

    addTestSource('''
import 'package:flutter/material.dart';

build() => new Row(
    key: null,
    ^
  );
''');

    var response = await computeSuggestions2();
    _checkNamedArguments(response).containsMatch((suggestion) {
      suggestion
        ..completion.isEqualTo('children: [],')
        ..defaultArgumentListString.isNull
        ..hasSelection(offset: 11);
    });
  }

  Future<void> test_flutter_InstanceCreationExpression_2() async {
    writeTestPackageConfig(flutter: true);

    addTestSource('''
import 'package:flutter/material.dart';

build() => new Row(
    ^
    key: null,
  );
''');

    var response = await computeSuggestions2();
    _checkNamedArguments(response).containsMatch((suggestion) {
      suggestion
        ..completion.isEqualTo('children: [],')
        ..defaultArgumentListString.isNull
        ..hasSelection(offset: 11);
    });
  }

  Future<void> test_flutter_InstanceCreationExpression_3() async {
    // Ensure a trailing comma is not added when only replacing the name.
    writeTestPackageConfig(flutter: true);

    addTestSource('''
import 'package:flutter/material.dart';

build() => new Row(
    ke^: null,
  );
''');

    var response = await computeSuggestions2();
    _checkNamedArguments(response).containsMatch((suggestion) {
      suggestion
        ..completion.isEqualTo('key')
        ..defaultArgumentListString.isNull
        ..hasSelection(offset: 3);
    });
  }

  Future<void>
      test_flutter_InstanceCreationExpression_children_dynamic() async {
    // Ensure we don't generate unneeded <dynamic> param if a future API doesn't
    // type it's children.
    writeTestPackageConfig(flutter: true);

    addTestSource('''
import 'package:flutter/material.dart';

build() => new Container(
    child: new DynamicRow(^);
  );

class DynamicRow extends Widget {
  DynamicRow({List children: null});
}
''');

    var response = await computeSuggestions2();
    _checkNamedArguments(response).matchesInAnyOrder([
      (suggestion) => suggestion
        ..completion.isEqualTo('children: [],')
        ..defaultArgumentListString.isNull
        ..hasSelection(offset: 11),
    ]);
  }

  Future<void> test_flutter_InstanceCreationExpression_children_Map() async {
    // Ensure we don't generate Map params for a future API
    writeTestPackageConfig(flutter: true);

    addTestSource('''
import 'package:flutter/material.dart';

build() => new Container(
    child: new MapRow(^);
  );

class MapRow extends Widget {
  MapRow({Map<Object, Object> children: null});
}
''');

    var response = await computeSuggestions2();
    _checkNamedArguments(response).matchesInAnyOrder([
      (suggestion) => suggestion
        ..completion.isEqualTo('children: ,')
        ..defaultArgumentListString.isNull
        ..hasSelection(offset: 10),
    ]);
  }

  Future<void> test_flutter_InstanceCreationExpression_slivers() async {
    writeTestPackageConfig(flutter: true);

    addTestSource('''
import 'package:flutter/material.dart';

build() => new CustomScrollView(
    ^
  );

class CustomScrollView extends Widget {
  CustomScrollView({List<Widget> slivers});
}
''');

    var response = await computeSuggestions2();
    _checkNamedArguments(response).matchesInAnyOrder([
      (suggestion) => suggestion
        ..completion.isEqualTo('slivers: [],')
        ..defaultArgumentListString.isNull
        ..hasSelection(offset: 10),
    ]);
  }

  Future<void> test_flutter_MethodExpression_children() async {
    // Ensure we don't generate params for a method call
    // TODO(brianwilkerson) This test has been changed so that it no longer has
    // anything to do with Flutter (by moving the declaration of `foo` out of
    // the 'material' library). Determine whether the test is still valid.
    writeTestPackageConfig(flutter: true);

    addTestSource('''
import 'package:flutter/material.dart';

main() {
  foo(^);
}

foo({String children}) {}
''');

    var response = await computeSuggestions2();
    _checkNamedArguments(response).matchesInAnyOrder([
      (suggestion) => suggestion
        ..completion.isEqualTo('children: ')
        ..defaultArgumentListString.isNull
        ..defaultArgumentListTextRanges.isNull,
    ]);
  }

  Future<void> test_named_01() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(^)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ')
            ..parameterType.isEqualTo('bool')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
          (suggestion) => suggestion
            ..completion.isEqualTo('two: ')
            ..parameterType.isEqualTo('int')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_02() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(o^)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ')
            ..parameterType.isEqualTo('bool')
            ..hasReplacement(left: 1)
            ..hasSelection(offset: 5),
          (suggestion) => suggestion
            ..completion.isEqualTo('two: ')
            ..parameterType.isEqualTo('int')
            ..hasReplacement(left: 1)
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_03() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(o^ two: 2)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ,')
            ..parameterType.isEqualTo('bool')
            ..hasReplacement(left: 1)
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_04() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(o^, two: 2)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ')
            ..parameterType.isEqualTo('bool')
            ..hasReplacement(left: 1)
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_05() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(o^ , two: 2)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ')
            ..parameterType.isEqualTo('bool')
            ..hasReplacement(left: 1)
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_06() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(^o,)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ')
            ..parameterType.isEqualTo('bool')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
          (suggestion) => suggestion
            ..completion.isEqualTo('two: ')
            ..parameterType.isEqualTo('int')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_07() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(^ two: 2)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ,')
            ..parameterType.isEqualTo('bool')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_08() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(^two: 2)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ,')
            ..parameterType.isEqualTo('bool')
            ..hasReplacement(right: 3)
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_09() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(^, two: 2)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ')
            ..parameterType.isEqualTo('bool')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_10() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(^ , two: 2)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ')
            ..parameterType.isEqualTo('bool')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_11() async {
    await _tryParametersArguments(
      parameters: '(int one, {bool two, int three})',
      arguments: '(1, ^, three: 3)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('two: ')
            ..parameterType.isEqualTo('bool')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_12() async {
    await _tryParametersArguments(
      parameters: '(int one, {bool two, int three})',
      arguments: '(1, ^ three: 3)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('two: ,')
            ..parameterType.isEqualTo('bool')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_13() async {
    await _tryParametersArguments(
      parameters: '(int one, {bool two, int three})',
      arguments: '(1, ^three: 3)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('two: ,')
            ..parameterType.isEqualTo('bool')
            ..hasReplacement(right: 5)
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  @failingTest
  Future<void> test_named_14() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(two: 2^)',
      check: (response) {
        _checkNamedArguments(response).isEmpty;
      },
    );
  }

  @failingTest
  Future<void> test_named_15() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(two: 2 ^)',
      check: (response) {
        _checkNamedArguments(response).isEmpty;
      },
    );
  }

  Future<void> test_named_16() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(two: 2, ^)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ')
            ..parameterType.isEqualTo('bool')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_17() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(two: 2, o^)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ')
            ..parameterType.isEqualTo('bool')
            ..hasReplacement(left: 1)
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_18() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(two: 2, o^,)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one: ')
            ..parameterType.isEqualTo('bool')
            ..hasReplacement(left: 1)
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_19() async {
    await _tryParametersArguments(
      parameters: '(int one, int two, int three, {int four, int five})',
      arguments: '(1, ^, 3)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('four: ')
            ..parameterType.isEqualTo('int')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 6),
          (suggestion) => suggestion
            ..completion.isEqualTo('five: ')
            ..parameterType.isEqualTo('int')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 6),
        ]);
      },
    );
  }

  Future<void> test_named_20() async {
    await _tryParametersArguments(
      languageVersion: '2.15',
      parameters: '(int one, int two, int three, {int four, int five})',
      arguments: '(1, ^, 3)',
      check: (response) {
        _checkNamedArguments(response).isEmpty;
      },
    );
  }

  Future<void> test_named_21() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(o^: false)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('one')
            ..parameterType.isEqualTo('bool')
            ..hasReplacement(left: 1)
            ..hasSelection(offset: 3),
          (suggestion) => suggestion
            ..completion.isEqualTo('two')
            ..parameterType.isEqualTo('int')
            ..hasReplacement(left: 1)
            ..hasSelection(offset: 3),
        ]);
      },
    );
  }

  Future<void> test_named_22() async {
    await _tryParametersArguments(
      parameters: '(bool one, {int two, double three})',
      arguments: '(false, ^t: 2)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('two: ,')
            ..parameterType.isEqualTo('int')
            ..hasReplacement(right: 1)
            ..hasSelection(offset: 5),
          (suggestion) => suggestion
            ..completion.isEqualTo('three: ,')
            ..parameterType.isEqualTo('double')
            ..hasReplacement(right: 1)
            ..hasSelection(offset: 7),
        ]);
      },
    );
  }

  Future<void> test_named_23() async {
    await _tryParametersArguments(
      parameters: '(bool one, {int two})',
      arguments: '(false, foo^ba: 2)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('two')
            ..parameterType.isEqualTo('int')
            ..hasReplacement(left: 3, right: 2)
            ..hasSelection(offset: 3),
        ]);
      },
    );
  }

  Future<void> test_named_24() async {
    await _tryParametersArguments(
      parameters: '(bool one, {int two, double three})',
      arguments: '(false, ^: 2)',
      check: (response) {
        _checkNamedArguments(response).matchesInAnyOrder([
          (suggestion) => suggestion
            ..completion.isEqualTo('two')
            ..parameterType.isEqualTo('int')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 3),
          (suggestion) => suggestion
            ..completion.isEqualTo('three')
            ..parameterType.isEqualTo('double')
            ..hasEmptyReplacement()
            ..hasSelection(offset: 5),
        ]);
      },
    );
  }

  Future<void> test_named_25() async {
    await _tryParametersArguments(
      parameters: '({bool one, int two})',
      arguments: '(one: ^)',
      check: (response) {
        _checkNamedArguments(response).isEmpty;
      },
    );
  }

  Future<void> _tryParametersArguments({
    String? languageVersion,
    required String parameters,
    required String arguments,
    required void Function(CompletionResponseForTesting response) check,
  }) async {
    var languageVersionLine = languageVersion != null
        ? '// @dart = $languageVersion'
        : '// no language version override';

    Future<void> computeAndCheck() async {
      var response = await computeSuggestions2();
      check(response);
    }

    // Annotation, local class.
    addTestSource2('''
$languageVersionLine
class A {
  const A$parameters;
}
@A$arguments
void f() {}
''');
    await computeAndCheck();

    // Annotation, imported class.
    newFile2('$testPackageLibPath/a.dart', '''
class A {
  const A$parameters;
}
''');
    addTestSource2('''
$languageVersionLine
import 'a.dart';
@A$arguments
void f() {}
''');
    await computeAndCheck();

    // Annotation, imported class, prefixed.
    newFile2('$testPackageLibPath/a.dart', '''
class A {
  const A$parameters;
}
''');
    addTestSource2('''
$languageVersionLine
import 'a.dart' as p;
@p.A$arguments
void f() {}
''');
    await computeAndCheck();

    // Enum constant.
    addTestSource2('''
$languageVersionLine
enum E {
  v$arguments;
  const E$parameters;
}
''');
    await computeAndCheck();

    // Function expression invocation.
    addTestSource2('''
$languageVersionLine
import 'a.dart';
void f$parameters() {}
var v = (f)$arguments;
''');
    await computeAndCheck();

    // Instance creation, local class, generative.
    addTestSource2('''
$languageVersionLine
class A {
  A$parameters;
}
var v = A$arguments;
''');
    await computeAndCheck();

    // Instance creation, imported class, generative.
    newFile2('$testPackageLibPath/a.dart', '''
class A {
  A$parameters;
}
''');
    addTestSource2('''
$languageVersionLine
import 'a.dart';
var v = A$arguments;
''');
    await computeAndCheck();

    // Instance creation, imported class, factory.
    newFile2('$testPackageLibPath/a.dart', '''
class A {
  factory A$parameters => throw 0;
}
''');
    addTestSource2('''
$languageVersionLine
import 'a.dart';
var v = A$arguments;
''');
    await computeAndCheck();

    // Method invocation, local method.
    addTestSource2('''
$languageVersionLine
class A {
  void foo$parameters() {}
}
var v = A().foo$arguments;
''');
    await computeAndCheck();

    // Method invocation, local function.
    addTestSource2('''
$languageVersionLine
void f$parameters() {}
var v = f$arguments;
''');
    await computeAndCheck();

    // Method invocation, imported function.
    newFile2('$testPackageLibPath/a.dart', '''
void f$parameters() {}
''');
    addTestSource2('''
$languageVersionLine
import 'a.dart';
var v = f$arguments;
''');
    await computeAndCheck();

    // Super constructor invocation.
    addTestSource2('''
$languageVersionLine
class A {
  A$parameters;
}
class B extends A {
  B() : super$arguments;
}
''');
    await computeAndCheck();

    // This constructor invocation.
    addTestSource2('''
$languageVersionLine
class A {
  A$parameters;
  A.named() : this$arguments;
}
''');
    await computeAndCheck();

    // Invalid: getter invocation.
    // Parameters not used. Check not used.
    addTestSource2('''
$languageVersionLine
int get foo => 0;
var v = foo$arguments;
''');
    await computeSuggestions();
    assertNoSuggestions();
  }

  static CheckTarget<Iterable<CompletionSuggestionForTesting>>
      _checkNamedArguments(CompletionResponseForTesting response) {
    return check(response).suggestions.namedArguments;
  }
}