// Copyright (c) 2015, 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/library_member_contributor.dart';
import 'package:test/test.dart';
import 'package:test_reflective_loader/test_reflective_loader.dart';

import 'completion_contributor_util.dart';

main() {
  defineReflectiveSuite(() {
    defineReflectiveTests(LibraryMemberContributorTest);
  });
}

@reflectiveTest
class LibraryMemberContributorTest extends DartCompletionContributorTest {
  @override
  DartCompletionContributor createContributor() {
    return new LibraryMemberContributor();
  }

  test_libraryPrefix() async {
    // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
    addTestSource('import "dart:async" as bar; foo() {bar.^}');
    await computeSuggestions();
    assertSuggestClass('Future');
    assertNotSuggested('loadLibrary');
  }

  test_libraryPrefix2() async {
    // SimpleIdentifier  MethodInvocation  ExpressionStatement
    addTestSource('import "dart:async" as bar; foo() {bar.^ print("f")}');
    await computeSuggestions();
    assertSuggestClass('Future');
  }

  test_libraryPrefix3() async {
    // SimpleIdentifier  MethodInvocation  ExpressionStatement
    addTestSource('import "dart:async" as bar; foo() {new bar.F^ print("f")}');
    await computeSuggestions();
    assertSuggestConstructor('Future');
    assertSuggestConstructor('Future.delayed');
  }

  test_libraryPrefix_cascade() async {
    addTestSource('''
    import "dart:math" as math;
    main() {math..^}''');
    await computeSuggestions();
    assertNoSuggestions();
  }

  test_libraryPrefix_cascade2() async {
    addTestSource('''
    import "dart:math" as math;
    main() {math.^.}''');
    await computeSuggestions();
    assertSuggestFunction('min', 'T');
  }

  test_libraryPrefix_cascade3() async {
    addTestSource('''
    import "dart:math" as math;
    main() {math..^a}''');
    await computeSuggestions();
    assertNoSuggestions();
  }

  test_libraryPrefix_cascade4() async {
    addTestSource('''
    import "dart:math" as math;
    main() {math.^.a}''');
    await computeSuggestions();
    assertSuggestFunction('min', 'T');
  }

  test_libraryPrefix_deferred() async {
    // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
    addTestSource('import "dart:async" deferred as bar; foo() {bar.^}');
    await computeSuggestions();
    assertSuggestClass('Future');
    assertSuggestFunction('loadLibrary', 'Future<dynamic>');
  }

  test_libraryPrefix_deferred_inPart() async {
    // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
    var libFile = '${testFile.substring(0, testFile.length - 5)}A.dart';
    addSource(libFile, '''
        library testA;
        import "dart:async" deferred as bar;
        part "${convertPathForImport(testFile)}";''');
    addTestSource('part of testA; foo() {bar.^}');
    // Assume that libraries containing has been computed for part files
    await computeLibrariesContaining();
    await computeSuggestions();
    assertSuggestClass('Future');
    assertSuggestFunction('loadLibrary', 'Future<dynamic>');
    assertNotSuggested('foo');
  }

  test_libraryPrefix_with_exports() async {
    addSource('/libA.dart', 'library libA; class A { }');
    addSource('/libB.dart', '''
        library libB;
        export "${convertPathForImport("/libA.dart")}";
        class B { }
        @deprecated class B1 { }''');
    addTestSource(
        'import "${convertPathForImport("/libB.dart")}" as foo; main() {foo.^} class C { }');
    await computeSuggestions();
    assertSuggestClass('B');
    assertSuggestClass('B1', relevance: DART_RELEVANCE_LOW, isDeprecated: true);
    assertSuggestClass('A');
    assertNotSuggested('C');
  }

  test_PrefixedIdentifier_library() async {
    // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
    addSource('/testB.dart', '''
        lib B;
        var T1;
        class X { }
        class Y { }''');
    addTestSource('''
        import "${convertPathForImport("/testB.dart")}" as b;
        var T2;
        class A { }
        main() {b.^}''');
    await computeSuggestions();
    expect(replacementOffset, completionOffset);
    expect(replacementLength, 0);
    assertSuggestClass('X');
    assertSuggestClass('Y');
    assertSuggestTopLevelVar('T1', null);
    assertNotSuggested('T2');
    assertNotSuggested('Object');
    assertNotSuggested('b');
    assertNotSuggested('A');
    assertNotSuggested('==');
  }

  test_PrefixedIdentifier_library_export_withShow() async {
    addSource('/a.dart', r'''
class A {}
class B {}
''');
    addSource('/b.dart', r'''
export 'a.dart' show A;
''');
    addTestSource(r'''
import 'b.dart' as p;
main() {
  p.^
}
''');
    await computeSuggestions();
    assertSuggestClass('A');
    assertNotSuggested('B');
  }

  @failingTest
  test_PrefixedIdentifier_library_import_withShow() async {
    // As it is designed now, I think we should not suggest B.
    // However an alternative design could be suggesting it, but updating show.
    // This could be a part of project-wide suggesting and auto-importing.
    addSource('/a.dart', r'''
class A {}
class B {}
''');
    addTestSource(r'''
import 'a.dart' as p show A;
main() {
  p.^
}
''');
    await computeSuggestions();
    assertSuggestClass('A');
    assertNotSuggested('B');
  }

  test_PrefixedIdentifier_library_inPart() async {
    // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
    var libFile = '${testFile.substring(0, testFile.length - 5)}A.dart';
    addSource('/testB.dart', '''
        lib B;
        var T1;
        class X { }
        class Y { }''');
    addSource(libFile, '''
        library testA;
        import "${convertPathForImport("/testB.dart")}" as b;
        part "${convertPathForImport(testFile)}";
        var T2;
        class A { }''');
    addTestSource('''
        part of testA;
        main() {b.^}''');
    // Assume that libraries containing has been computed for part files
    await computeLibrariesContaining();
    await computeSuggestions();
    expect(replacementOffset, completionOffset);
    expect(replacementLength, 0);
    assertSuggestClass('X');
    assertSuggestClass('Y');
    assertSuggestTopLevelVar('T1', null);
    assertNotSuggested('T2');
    assertNotSuggested('Object');
    assertNotSuggested('b');
    assertNotSuggested('A');
    assertNotSuggested('==');
  }

  test_PrefixedIdentifier_library_typesOnly() async {
    // SimpleIdentifier  PrefixedIdentifier  TypeName
    addSource('/testB.dart', '''
        lib B;
        var T1;
        class X { }
        class Y { }''');
    addTestSource('''
        import "${convertPathForImport("/testB.dart")}" as b;
        var T2;
        class A { }
        foo(b.^ f) {}''');
    await computeSuggestions();
    expect(replacementOffset, completionOffset);
    expect(replacementLength, 0);
    assertSuggestClass('X');
    assertSuggestClass('Y');
    assertNotSuggested('T1');
    assertNotSuggested('T2');
    assertNotSuggested('Object');
    assertNotSuggested('b');
    assertNotSuggested('A');
    assertNotSuggested('==');
  }

  test_PrefixedIdentifier_library_typesOnly2() async {
    // SimpleIdentifier  PrefixedIdentifier  TypeName
    addSource('/testB.dart', '''
        lib B;
        var T1;
        class X { }
        class Y { }''');
    addTestSource('''
        import "${convertPathForImport("/testB.dart")}" as b;
        var T2;
        class A { }
        foo(b.^) {}''');
    await computeSuggestions();
    expect(replacementOffset, completionOffset);
    expect(replacementLength, 0);
    assertSuggestClass('X');
    assertSuggestClass('Y');
    assertNotSuggested('T1');
    assertNotSuggested('T2');
    assertNotSuggested('Object');
    assertNotSuggested('b');
    assertNotSuggested('A');
    assertNotSuggested('==');
  }

  test_PrefixedIdentifier_parameter() async {
    // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
    addSource('/testB.dart', '''
        lib B;
        class _W {M y; var _z;}
        class X extends _W {}
        class M{}''');
    addTestSource('''
        import "${convertPathForImport("/testB.dart")}";
        foo(X x) {x.^}''');
    await computeSuggestions();
    assertNoSuggestions();
  }

  test_PrefixedIdentifier_prefix() async {
    // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
    addSource('/testA.dart', '''
        class A {static int bar = 10;}
        _B() {}''');
    addTestSource('''
        import "${convertPathForImport("/testA.dart")}";
        class X {foo(){A^.bar}}''');
    await computeSuggestions();
    assertNoSuggestions();
  }
}