// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using Roslyn.Utilities;

namespace Microsoft.CodeAnalysis.MSBuild;

internal sealed class PathResolver
{
    private readonly DiagnosticReporter? _diagnosticReporter;

    public PathResolver(DiagnosticReporter? diagnosticReporter)
    {
        _diagnosticReporter = diagnosticReporter;
    }

    public bool TryGetAbsoluteSolutionPath(string path, string baseDirectory, DiagnosticReportingMode reportingMode, [NotNullWhen(true)] out string? absolutePath)
    {
        try
        {
            absolutePath = GetAbsolutePath(path, baseDirectory);
        }
        catch (Exception)
        {
            _diagnosticReporter?.Report(reportingMode, string.Format(WorkspacesResources.Invalid_solution_file_path_colon_0, path));
            absolutePath = null;
            return false;
        }

        if (!File.Exists(absolutePath))
        {
            _diagnosticReporter?.Report(
                reportingMode,
                string.Format(WorkspacesResources.Solution_file_not_found_colon_0, absolutePath),
                msg => new FileNotFoundException(msg));
            return false;
        }

        return true;
    }

    public bool TryGetAbsoluteProjectPath(string path, string baseDirectory, DiagnosticReportingMode reportingMode, [NotNullWhen(true)] out string? absolutePath)
    {
        try
        {
            absolutePath = GetAbsolutePath(path, baseDirectory);
        }
        catch (Exception)
        {
            _diagnosticReporter?.Report(reportingMode, string.Format(WorkspacesResources.Invalid_project_file_path_colon_0, path));
            absolutePath = null;
            return false;
        }

        if (!File.Exists(absolutePath))
        {
            _diagnosticReporter?.Report(
                reportingMode,
                string.Format(WorkspacesResources.Project_file_not_found_colon_0, absolutePath),
                msg => new FileNotFoundException(msg));
            return false;
        }

        return true;
    }

    private static string GetAbsolutePath(string path, string baseDirectory)
        => FileUtilities.NormalizeAbsolutePath(FileUtilities.ResolveRelativePath(path, baseDirectory) ?? path);
}