using NUnit.Framework;
using System;
using System.Collections.Generic;
using System.Data.OleDb;
using Microsoft.Search.Interop;
using Microsoft.Plugin.Indexer.SearchHelper;
using Microsoft.Plugin.Indexer.Interface;
using Moq;
using System.Linq;

namespace Wox.Test.Plugins
{

    [TestFixture]
    public class WindowsIndexerTest
    {

        public WindowsSearchAPI GetWindowsSearchAPI()
        {
            var mock = new Mock<ISearch>();
            mock.Setup(x => x.Query("dummy-connection-string", "dummy-query")).Returns(new List<OleDBResult>());
            return new WindowsSearchAPI(mock.Object);
        }

        [Test]
        public void InitQueryHelper_ShouldInitialize_WhenFunctionIsCalled()
        {
            // Arrange
            int maxCount = 10;
            WindowsSearchAPI _api = GetWindowsSearchAPI();
            ISearchQueryHelper queryHelper = null;

            // Act
            _api.InitQueryHelper(out queryHelper, maxCount);

            // Assert
            Assert.IsNotNull(queryHelper);
            Assert.AreEqual(queryHelper.QueryMaxResults, maxCount);
        }

        [Test]
        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternIsAsterisk()
        {
            // Arrange
            ISearchQueryHelper queryHelper;
            String pattern = "*";
            WindowsSearchAPI _api = GetWindowsSearchAPI();
            _api.InitQueryHelper(out queryHelper, 10);

            // Act
            _api.ModifyQueryHelper(ref queryHelper, pattern);

            // Assert
            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("Contains"));
        }

        [Test]
        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternContainsAsterisk()
        {
            // Arrange
            ISearchQueryHelper queryHelper;
            String pattern = "tt*^&)";
            WindowsSearchAPI _api = GetWindowsSearchAPI();
            _api.InitQueryHelper(out queryHelper, 10);

            // Act
            _api.ModifyQueryHelper(ref queryHelper, pattern);

            // Assert
            Assert.IsTrue(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("Contains"));
        }

        [Test]
        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternContainsPercent()
        {
            // Arrange
            ISearchQueryHelper queryHelper;
            String pattern = "tt%^&)";
            WindowsSearchAPI _api = GetWindowsSearchAPI();
            _api.InitQueryHelper(out queryHelper, 10);

            // Act
            _api.ModifyQueryHelper(ref queryHelper, pattern);

            // Assert
            Assert.IsTrue(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("Contains"));
        }

        [Test]
        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternContainsUnderScore()
        {
            // Arrange
            ISearchQueryHelper queryHelper;
            String pattern = "tt_^&)";
            WindowsSearchAPI _api = GetWindowsSearchAPI();
            _api.InitQueryHelper(out queryHelper, 10);

            // Act
            _api.ModifyQueryHelper(ref queryHelper, pattern);

            // Assert
            Assert.IsTrue(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("Contains"));
        }

        [Test]
        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternContainsQuestionMark()
        {
            // Arrange
            ISearchQueryHelper queryHelper;
            String pattern = "tt?^&)";
            WindowsSearchAPI _api = GetWindowsSearchAPI();
            _api.InitQueryHelper(out queryHelper, 10);

            // Act
            _api.ModifyQueryHelper(ref queryHelper, pattern);

            // Assert
            Assert.IsTrue(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("Contains"));
        }

        [Test]
        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternDoesNotContainSplSymbols()
        {
            // Arrange
            ISearchQueryHelper queryHelper;
            String pattern = "tt^&)bc";
            WindowsSearchAPI _api = GetWindowsSearchAPI();
            _api.InitQueryHelper(out queryHelper, 10);

            // Act
            _api.ModifyQueryHelper(ref queryHelper, pattern);

            // Assert
            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
            Assert.IsTrue(queryHelper.QueryWhereRestrictions.Contains("Contains"));
        }

        [Test]
        public void ExecuteQuery_ShouldDisposeAllConnections_AfterFunctionCall()
        {
            // Arrange
            OleDBSearch oleDbSearch = new OleDBSearch();
            WindowsSearchAPI _api = new WindowsSearchAPI(oleDbSearch);

            // Act
            _api.Search("FilePath");

            // Assert
            Assert.IsTrue(oleDbSearch.HaveAllDisposableItemsBeenDisposed());
        }

        [Test]
        public void WindowsSearchAPI_ShouldShowHiddenFiles_WhenDisplayHiddenFilesIsTrue()
        {
            // Arrange
            OleDBResult unHiddenFile = new OleDBResult(new List<object>() { "C:/test/path/file1.txt", "file1.txt", (Int64)0x0 });
            OleDBResult hiddenFile = new OleDBResult(new List<object>() { "C:/test/path/file2.txt", "file2.txt", (Int64)0x2 });
            List<OleDBResult> results = new List<OleDBResult>() { hiddenFile, unHiddenFile };
            var mock = new Mock<ISearch>();
            mock.Setup(x => x.Query(It.IsAny<string>(), It.IsAny<string>())).Returns(results);
            WindowsSearchAPI _api = new WindowsSearchAPI(mock.Object, true);

            // Act
            var windowsSearchAPIResults = _api.Search("FilePath");

            // Assert
            Assert.IsTrue(windowsSearchAPIResults.Count() == 2);
            Assert.IsTrue(windowsSearchAPIResults.Any(x => x.Title == "file1.txt"));
            Assert.IsTrue(windowsSearchAPIResults.Any(x => x.Title == "file2.txt"));
        }

        [Test]
        public void WindowsSearchAPI_ShouldNotShowHiddenFiles_WhenDisplayHiddenFilesIsFalse()
        {
            // Arrange
            OleDBResult unHiddenFile = new OleDBResult(new List<object>() { "C:/test/path/file1.txt", "file1.txt", (Int64)0x0 });
            OleDBResult hiddenFile = new OleDBResult(new List<object>() { "C:/test/path/file2.txt", "file2.txt", (Int64)0x2 });
            List<OleDBResult> results = new List<OleDBResult>() { hiddenFile, unHiddenFile };
            var mock = new Mock<ISearch>();
            mock.Setup(x => x.Query(It.IsAny<string>(), It.IsAny<string>())).Returns(results);
            WindowsSearchAPI _api = new WindowsSearchAPI(mock.Object, false);

            // Act
            var windowsSearchAPIResults = _api.Search("FilePath");

            // Assert
            Assert.IsTrue(windowsSearchAPIResults.Count() == 1);
            Assert.IsTrue(windowsSearchAPIResults.Any(x => x.Title == "file1.txt"));
            Assert.IsFalse(windowsSearchAPIResults.Any(x => x.Title == "file2.txt"));
        }

        [Test]
        public void WindowsSearchAPI_ShouldNotReturnResultsWithNullValue_WhenDbResultHasANullColumn()
        {
            // Arrange
            OleDBResult file1 = new OleDBResult(new List<object>() { "C:/test/path/file1.txt", DBNull.Value, (Int64)0x0 });
            OleDBResult file2 = new OleDBResult(new List<object>() { "C:/test/path/file2.txt", "file2.txt", (Int64)0x0 });

            List<OleDBResult> results = new List<OleDBResult>() { file1, file2 };
            var mock = new Mock<ISearch>();
            mock.Setup(x => x.Query(It.IsAny<string>(), It.IsAny<string>())).Returns(results);
            WindowsSearchAPI _api = new WindowsSearchAPI(mock.Object, false);

            // Act
            var windowsSearchAPIResults = _api.Search("FilePath");

            // Assert
            Assert.IsTrue(windowsSearchAPIResults.Count() == 1);
            Assert.IsFalse(windowsSearchAPIResults.Any(x => x.Title == "file1.txt"));
            Assert.IsTrue(windowsSearchAPIResults.Any(x => x.Title == "file2.txt"));
        }
    }
}