using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Sharpmake;

namespace JustDance.Tools
{
    /// <summary>
    /// Generates a text file that contains the list of each dll which contains unit tests.
    /// </summary>
    public static class UnitTestsReport
    {
        /// <summary>
        /// Generates a text file that contains the list of each dll which contains unit tests.
        /// </summary>
        public static void Generate(Solution solution)
        {
            foreach (var configuration in solution.Configurations.Where(x => x.Target.GetPlatform() == Platform.win64))
            {
                var lines = new List<string>();
                foreach (var projectInfo in configuration.IncludedProjectInfos)
                {
                    var project = projectInfo.Project as CSharpProject;
                    if (project != null && ContainsUnitTests(project))
                    {
                        var projectConf = projectInfo.Configuration;
                        var extension = projectConf.Output == Project.Configuration.OutputType.DotNetClassLibrary ? "dll" : "exe";
                        var assemblyName = project.AssemblyName + "." + extension;
                        var outputPath = Path.Combine(projectConf.TargetPath, assemblyName);
                        lines.Add(outputPath);
                    }
                }

                var outputFilename = Path.Combine(BaseProject.TempPath, solution.Name + "_" + configuration.Target.GetFragment<Optimization>() + "_unittestsreport.txt");
                File.WriteAllLines(outputFilename, lines);
            }
        }

        private static bool ContainsUnitTests(CSharpProject project)
        {
            return project.ResolvedSourceFiles.Any(file => file.EndsWith("test.cs", StringComparison.OrdinalIgnoreCase) ||
                                                           file.EndsWith("tests.cs", StringComparison.OrdinalIgnoreCase));
        }
    }
}