// Copyright (c) 2022, 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/lsp_protocol/protocol.dart' as lsp;
import 'package:analyzer/source/source_range.dart';
import 'package:test/test.dart';
import 'package:test_reflective_loader/test_reflective_loader.dart';

import 'utils/test_code_format.dart';

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

@reflectiveTest
class TestCodeFormatTest {
  void test_caret() {
    final rawCode = '''
int ^a = 1
    ''';
    final expectedCode = '''
int a = 1
    ''';
    final code = TestCode.parse(rawCode);
    expect(code.rawCode, rawCode);
    expect(code.code, expectedCode);

    expect(code.positions, hasLength(1));
    expect(code.position.offset, 4);
    expect(code.position.offset, code.positions[0].offset);
    expect(code.position.lsp, lsp.Position(line: 0, character: 4));
    expect(code.position.lsp, code.positions[0].lsp);

    expect(code.ranges, isEmpty);
  }

  void test_noMarkers() {
    final rawCode = '''
int a = 1;
''';
    final code = TestCode.parse(rawCode);
    expect(code.rawCode, rawCode);
    expect(code.code, rawCode); // no difference
    expect(code.positions, isEmpty);
    expect(code.ranges, isEmpty);
  }

  void test_nonPositionCaret() {
    final rawCode = '''
String /*0*/a = '^^^';
    ''';
    final expectedCode = '''
String a = '^^^';
    ''';
    final code = TestCode.parse(rawCode, treatCaretAsPosition: false);
    expect(code.rawCode, rawCode);
    expect(code.code, expectedCode);

    expect(code.positions, hasLength(1));
    expect(code.position.offset, 7);
    expect(code.position.offset, code.positions[0].offset);
    expect(code.position.lsp, lsp.Position(line: 0, character: 7));
    expect(code.position.lsp, code.positions[0].lsp);

    expect(code.ranges, isEmpty);
  }

  void test_positions() {
    final rawCode = '''
int /*0*/a = 1;/*1*/
int b/*2*/ = 2;
''';
    final expectedCode = '''
int a = 1;
int b = 2;
''';
    final code = TestCode.parse(rawCode);
    expect(code.rawCode, rawCode);
    expect(code.code, expectedCode);
    expect(code.ranges, isEmpty);

    expect(code.positions[0].offset, 4);
    expect(code.positions[1].offset, 10);
    expect(code.positions[2].offset, 16);

    expect(code.positions[0].lsp, lsp.Position(line: 0, character: 4));
    expect(code.positions[1].lsp, lsp.Position(line: 0, character: 10));
    expect(code.positions[2].lsp, lsp.Position(line: 1, character: 5));
  }

  void test_positions_reused() {
    final rawCode = '''
/*0*/ /*1*/ /*0*/
''';
    expect(() => TestCode.parse(rawCode), throwsArgumentError);
  }

  void test_positions_reusedCaret() {
    final rawCode = '''
^ ^
''';
    expect(() => TestCode.parse(rawCode), throwsArgumentError);
  }

  void test_positions_reusedCaretNumber() {
    final rawCode = '''
/*1*/ ^
''';
    expect(() => TestCode.parse(rawCode), throwsArgumentError);
  }

  void test_ranges() {
    final rawCode = '''
int /*[0*/a = 1;/*0]*/
/*[1*/int b = 2;/*1]*/
''';
    final expectedCode = '''
int a = 1;
int b = 2;
''';
    final code = TestCode.parse(rawCode);
    expect(code.rawCode, rawCode);
    expect(code.code, expectedCode);
    expect(code.positions, isEmpty);

    expect(code.ranges, hasLength(2));
    expect(code.ranges[0].sourceRange, SourceRange(4, 6));
    expect(code.ranges[1].sourceRange, SourceRange(11, 10));
    expect(
        code.ranges[0].lsp,
        lsp.Range(
            start: lsp.Position(line: 0, character: 4),
            end: lsp.Position(line: 0, character: 10)));
    expect(
        code.ranges[1].lsp,
        lsp.Range(
            start: lsp.Position(line: 1, character: 0),
            end: lsp.Position(line: 1, character: 10)));

    expect(code.ranges[0].text, 'a = 1;');
    expect(code.ranges[1].text, 'int b = 2;');
  }

  void test_ranges_endReused() {
    final rawCode = '''
/*[0*/ /*0]*/
/*[1*/ /*0]*/
''';
    expect(() => TestCode.parse(rawCode), throwsArgumentError);
  }

  void test_ranges_endWithoutStart() {
    final rawCode = '''
/*0]*/
''';
    expect(() => TestCode.parse(rawCode), throwsArgumentError);
  }

  void test_ranges_startReused() {
    final rawCode = '''
/*[0*/ /*0]*/
/*[0*/ /*1]*/
''';
    expect(() => TestCode.parse(rawCode), throwsArgumentError);
  }

  void test_ranges_startWithoutEnd() {
    final rawCode = '''
/*[0*/
''';
    expect(() => TestCode.parse(rawCode), throwsArgumentError);
  }
}