// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System;
using Microsoft.VisualStudio.Test;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Text.Operations;
using Moq;
using Xunit;

namespace Microsoft.VisualStudio.Editor.Razor
{
    public class BraceSmartIndenterTestBase : ForegroundDispatcherTestBase
    {
        protected static VisualStudioDocumentTracker CreateDocumentTracker(Func<ITextBuffer> bufferAccessor, ITextView focusedTextView)
        {
            var tracker = new Mock<VisualStudioDocumentTracker>();
            tracker.Setup(t => t.TextBuffer)
                .Returns(bufferAccessor);
            tracker.Setup(t => t.GetFocusedTextView())
                .Returns(focusedTextView);

            return tracker.Object;
        }

        protected static ITextView CreateFocusedTextView(Func<ITextBuffer> textBufferAccessor = null, ITextCaret caret = null)
        {
            var focusedTextView = new Mock<ITextView>();
            focusedTextView.Setup(textView => textView.HasAggregateFocus)
                .Returns(true);

            if (textBufferAccessor != null)
            {
                focusedTextView.Setup(textView => textView.TextBuffer)
                    .Returns(textBufferAccessor);
            }

            if (caret != null)
            {
                focusedTextView.Setup(textView => textView.Caret)
                    .Returns(caret);
            }

            return focusedTextView.Object;
        }

        protected static ITextCaret CreateCaretFrom(int position, ITextSnapshot snapshot)
        {
            var bufferPosition = new VirtualSnapshotPoint(snapshot, position);
            var caret = new Mock<ITextCaret>();
            caret.Setup(c => c.Position)
                .Returns(new CaretPosition(bufferPosition, new Mock<IMappingPoint>().Object, PositionAffinity.Predecessor));
            caret.Setup(c => c.MoveTo(It.IsAny<SnapshotPoint>()));

            return caret.Object;
        }

        protected static IEditorOperationsFactoryService CreateOperationsFactoryService()
        {
            var editorOperations = new Mock<IEditorOperations>();
            editorOperations.Setup(operations => operations.MoveToEndOfLine(false));
            var editorOperationsFactory = new Mock<IEditorOperationsFactoryService>();
            editorOperationsFactory.Setup(factory => factory.GetEditorOperations(It.IsAny<ITextView>()))
                .Returns(editorOperations.Object);

            return editorOperationsFactory.Object;
        }

        protected static TestTextBuffer CreateTextBuffer(ITextSnapshot initialSnapshot, VisualStudioDocumentTracker documentTracker)
        {
            var textBuffer = new TestTextBuffer(initialSnapshot);
            textBuffer.Properties.AddProperty(typeof(VisualStudioDocumentTracker), documentTracker);

            return textBuffer;
        }
    }
}