// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)

using System;
using System.Collections.Generic;
using ICSharpCode.PackageManagement;
using ICSharpCode.SharpDevelop.Project;
using NuGet;
using NUnit.Framework;
using PackageManagement.Tests.Helpers;

namespace PackageManagement.Tests
{
	[TestFixture]
	public class PackageReferencesForProjectTests
	{
		PackageReferencesForProject packageReferencesForProject;
		FakePackageReferenceFileFactory fakePackageReferenceFileFactory;
		FakePackageReferenceFile fakePackageReferenceFile;
		FakePackageReferenceInstaller fakePackageReferenceInstaller;
		
		TestableProject CreateProject()
		{
			return ProjectHelper.CreateTestProject();
		}
		
		void CreatePackageReferencesForProject(MSBuildBasedProject project)
		{
			fakePackageReferenceFileFactory = new FakePackageReferenceFileFactory();
			fakePackageReferenceFile = fakePackageReferenceFileFactory.FakePackageReferenceFile;
			fakePackageReferenceInstaller = new FakePackageReferenceInstaller();
			packageReferencesForProject = 
				new PackageReferencesForProject(
					project,
					fakePackageReferenceInstaller,
					fakePackageReferenceFileFactory);
		}
		
		void AddPackageReference(string packageId, string version)
		{
			fakePackageReferenceFile.AddFakePackageReference(packageId, version);
		}
		
		void PackageReferenceCollectionAssertAreEqual(IEnumerable<PackageReference> expected, IEnumerable<PackageReference> actual)
		{
			IEnumerable<string> expectedAsStrings = ConvertToStrings(expected);
			IEnumerable<string> actualAsStrings = ConvertToStrings(actual);
			
			CollectionAssert.AreEqual(expectedAsStrings, actualAsStrings);
		}
		
		List<string> ConvertToStrings(IEnumerable<PackageReference> packageReferences)
		{
			var converted = new List<string>();
			foreach (PackageReference packageReference in packageReferences) {
				string convertedPackageReference = ConvertToString(packageReference);
				converted.Add(convertedPackageReference);
			}
			return converted;
		}
		
		string ConvertToString(PackageReference packageReference)
		{
			return String.Format(
				"Id: {0}, Version: {1}",
				packageReference.Id,
				packageReference.Version);
		}
		
		[Test]
		public void InstallPackages_OnePackageReferenceInPackageConfigFile_OpensPackageConfigFileInProjectDirectory()
		{
			TestableProject project = CreateProject();
			project.FileName = @"d:\projects\myproject\myproject.csproj";
			CreatePackageReferencesForProject(project);
			AddPackageReference("PackageId", "1.0.3.2");
			
			packageReferencesForProject.InstallPackages();
			
			string fileName = fakePackageReferenceFileFactory.FileNamePassedToCreatePackageReferenceFile;
			string expectedFileName = @"d:\projects\myproject\packages.config";
			
			Assert.AreEqual(expectedFileName, fileName);
		}
		
		[Test]
		public void InstallPackages_OnePackageReferenceInPackageConfigFile_OnePackageInstalled()
		{
			TestableProject project = CreateProject();
			CreatePackageReferencesForProject(project);
			AddPackageReference("PackageId", "1.0.3.2");
			
			packageReferencesForProject.InstallPackages();
			
			IEnumerable<PackageReference> packageReferencesInstalled = 
				fakePackageReferenceInstaller.PackageReferencesPassedToInstallPackages;
			
			List<PackageReference> expectedPackageReferences = 
				fakePackageReferenceFile.FakePackageReferences;
			
			CollectionAssert.AreEqual(expectedPackageReferences, packageReferencesInstalled);
		}
		
		[Test]
		public void InstallPackages_OnePackageReferenceInPackageConfigFile_ProjectPassedToInstaller()
		{
			TestableProject expectedProject = CreateProject();
			CreatePackageReferencesForProject(expectedProject);
			AddPackageReference("PackageId", "1.0.3.2");
			
			packageReferencesForProject.InstallPackages();
			
			MSBuildBasedProject project = fakePackageReferenceInstaller.ProjectPassedToInstallPackages;
			
			Assert.AreEqual(expectedProject, project);
		}
		
		[Test]
		public void RemovePackageReferences_TwoPackageReferencesInPackageConfigFile_RemovesPackageReferenceFromFile()
		{			
			TestableProject project = CreateProject();
			CreatePackageReferencesForProject(project);
			AddPackageReference("One", "1.0.3.2");
			AddPackageReference("Two", "2.0.44");
			
			packageReferencesForProject.RemovePackageReferences();
			
			List<PackageReference> packageReferencesRemoved = fakePackageReferenceFile.EntriesDeleted;
			
			var expectedPackageReferences = new List<PackageReference>();
			expectedPackageReferences.Add(new PackageReference("One", new Version("1.0.3.2")));
			expectedPackageReferences.Add(new PackageReference("Two", new Version("2.0.44")));
			
			PackageReferenceCollectionAssertAreEqual(expectedPackageReferences, packageReferencesRemoved);
		}
	}
}