// Copyright (c) Umbraco.
// See LICENSE for more details.

using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Umbraco.Cms.Core.Install.Models;
using Umbraco.Cms.Core.Services;
using Umbraco.Extensions;

namespace Umbraco.Cms.Core.Install.InstallSteps
{
    /// <summary>
    /// Represents a step in the installation that ensure all the required permissions on files and folders are correct.
    /// </summary>
    [InstallSetupStep(
        InstallationType.NewInstall | InstallationType.Upgrade,
        "Permissions",
        0,
        "",
        PerformsAppRestart = true)]
    public class FilePermissionsStep : InstallSetupStep<object>
    {
        private readonly IFilePermissionHelper _filePermissionHelper;
        private readonly ILocalizedTextService _localizedTextService;

        /// <summary>
        /// Initializes a new instance of the <see cref="FilePermissionsStep"/> class.
        /// </summary>
        public FilePermissionsStep(
            IFilePermissionHelper filePermissionHelper,
            ILocalizedTextService localizedTextService)
        {
            _filePermissionHelper = filePermissionHelper;
            _localizedTextService = localizedTextService;
        }

        /// <inheritdoc/>
        public override Task<InstallSetupResult> ExecuteAsync(object model)
        {
            // validate file permissions
            var permissionsOk = _filePermissionHelper.RunFilePermissionTestSuite(out Dictionary<FilePermissionTest, IEnumerable<string>> report);

            var translatedErrors = report.ToDictionary(x => _localizedTextService.Localize("permissions", x.Key), x => x.Value);
            if (permissionsOk == false)
            {
                throw new InstallException("Permission check failed", "permissionsreport", new { errors = translatedErrors });
            }

            return Task.FromResult<InstallSetupResult>(null);
        }

        /// <inheritdoc/>
        public override bool RequiresExecution(object model) => true;
    }
}