Umbraco-CMS/src/Umbraco.Configuration/Models/ContentSettings.cs

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Extensions.Configuration;
using Umbraco.Core;
using Umbraco.Core.Configuration.UmbracoSettings;
using Umbraco.Core.Macros;

namespace Umbraco.Configuration.Models
{
    internal class ContentSettings : IContentSettings
    {
        private const string Prefix = Constants.Configuration.ConfigPrefix + "Content:";
        private const string NotificationsPrefix = Prefix + "Notifications:";
        private const string ImagingPrefix = Prefix + "Imaging:";
        private const string DefaultPreviewBadge =
            @"<div id=""umbracoPreviewBadge"" class=""umbraco-preview-badge""><span class=""umbraco-preview-badge__header"">Preview mode</span><a href=""{0}/preview/end?redir={1}"" class=""umbraco-preview-badge__end""><svg viewBox=""0 0 100 100"" xmlns=""http://www.w3.org/2000/svg""><title>Click to end</title><path d=""M5273.1 2400.1v-2c0-2.8-5-4-9.7-4s-9.7 1.3-9.7 4v2a7 7 0 002 4.9l5 4.9c.3.3.4.6.4 1v6.4c0 .4.2.7.6.8l2.9.9c.5.1 1-.2 1-.8v-7.2c0-.4.2-.7.4-1l5.1-5a7 7 0 002-4.9zm-9.7-.1c-4.8 0-7.4-1.3-7.5-1.8.1-.5 2.7-1.8 7.5-1.8s7.3 1.3 7.5 1.8c-.2.5-2.7 1.8-7.5 1.8z""/><path d=""M5268.4 2410.3c-.6 0-1 .4-1 1s.4 1 1 1h4.3c.6 0 1-.4 1-1s-.4-1-1-1h-4.3zM5272.7 2413.7h-4.3c-.6 0-1 .4-1 1s.4 1 1 1h4.3c.6 0 1-.4 1-1s-.4-1-1-1zM5272.7 2417h-4.3c-.6 0-1 .4-1 1s.4 1 1 1h4.3c.6 0 1-.4 1-1 0-.5-.4-1-1-1z""/><path d=""M78.2 13l-8.7 11.7a32.5 32.5 0 11-51.9 25.8c0-10.3 4.7-19.7 12.9-25.8L21.8 13a47 47 0 1056.4 0z""/><path d=""M42.7 2.5h14.6v49.4H42.7z""/></svg></a></div><style type=""text/css"">.umbraco-preview-badge {{position: absolute;top: 1em;right: 1em;display: inline-flex;background: #1b264f;color: #fff;padding: 1em;font-size: 12px;z-index: 99999999;justify-content: center;align-items: center;box-shadow: 0 10px 50px rgba(0, 0, 0, .1), 0 6px 20px rgba(0, 0, 0, .16);line-height: 1;}}.umbraco-preview-badge__header {{font-weight: bold;}}.umbraco-preview-badge__end {{width: 3em;padding: 1em;margin: -1em -1em -1em 2em;display: flex;flex-shrink: 0;align-items: center;align-self: stretch;}}.umbraco-preview-badge__end:hover,.umbraco-preview-badge__end:focus {{background: #f5c1bc;}}.umbraco-preview-badge__end svg {{fill: #fff;width:1em;}}</style>";

        private static readonly ImagingAutoFillUploadField[] DefaultImagingAutoFillUploadField =
        {
            new ImagingAutoFillUploadField
            {
                Alias = "umbracoFile"
            }
        };

        private readonly IConfiguration _configuration;

        public ContentSettings(IConfiguration configuration)
        {
            _configuration = configuration;
        }

        public string NotificationEmailAddress =>
            _configuration.GetValue<string>(NotificationsPrefix+"Email");

        public bool DisableHtmlEmail =>
            _configuration.GetValue(NotificationsPrefix+"DisableHtmlEmail", false);

        public IEnumerable<string> ImageFileTypes => _configuration.GetValue(
            ImagingPrefix+"ImageFileTypes", new[] { "jpeg", "jpg", "gif", "bmp", "png", "tiff", "tif" });

        public IEnumerable<IImagingAutoFillUploadField> ImageAutoFillProperties =>
            _configuration.GetValue(ImagingPrefix+"AutoFillImageProperties",
                DefaultImagingAutoFillUploadField);


        public bool ResolveUrlsFromTextString =>
            _configuration.GetValue(Prefix+"ResolveUrlsFromTextString", false);

        public IEnumerable<IContentErrorPage> Error404Collection => _configuration
            .GetSection(Prefix+"Errors:Error404")
            .GetChildren()
            .Select(x => new ContentErrorPage(x));

        public string PreviewBadge => _configuration.GetValue(Prefix+"PreviewBadge", DefaultPreviewBadge);

        public MacroErrorBehaviour MacroErrorBehaviour =>
            _configuration.GetValue(Prefix+"MacroErrors", MacroErrorBehaviour.Inline);

        public IEnumerable<string> DisallowedUploadFiles => _configuration.GetValue(
            Prefix+"DisallowedUploadFiles",
            new[] { "ashx", "aspx", "ascx", "config", "cshtml", "vbhtml", "asmx", "air", "axd" });

        public IEnumerable<string> AllowedUploadFiles =>
            _configuration.GetValue(Prefix+"AllowedUploadFiles", Array.Empty<string>());

        public bool ShowDeprecatedPropertyEditors =>
            _configuration.GetValue(Prefix+"ShowDeprecatedPropertyEditors", false);

        public string LoginBackgroundImage =>
            _configuration.GetValue(Prefix+"LoginBackgroundImage", string.Empty);

        private class ContentErrorPage : IContentErrorPage
        {
            public ContentErrorPage(IConfigurationSection configurationSection)
            {
                Culture = configurationSection.Key;

                var value = configurationSection.Value;

                if (int.TryParse(value, out var contentId))
                {
                    HasContentId = true;
                    ContentId = contentId;
                }
                else if (Guid.TryParse(value, out var contentKey))
                {
                    HasContentKey = true;
                    ContentKey = contentKey;
                }
                else
                {
                    ContentXPath = value;
                }
            }

            public int ContentId { get; }
            public Guid ContentKey { get; }
            public string ContentXPath { get; }
            public bool HasContentId { get; }
            public bool HasContentKey { get; }
            public string Culture { get; set; }
        }

        private class ImagingAutoFillUploadField : IImagingAutoFillUploadField
        {
            public string Alias { get; set; }
            public string WidthFieldAlias { get; set; }
            public string HeightFieldAlias { get; set; }
            public string LengthFieldAlias { get; set; }
            public string ExtensionFieldAlias { get; set; }
        }
    }
}