🚧 RSS as a module

2026-07-31 00:29:24 +03:00 · 2020-03-02 00:00:52 +04:00
parent e86049f4fd
commit eac0da5016
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+/// This file is a part of RSS Bot for Telegram.
+/// License: MIT
+/// Author: CrazyHackGUT aka Kruzya (Sergey Gut) <kruzefag@gmail.com>
+/// 
+
+using System;
+using System.Web;
+using Telegram.Bot.Types.Enums;
+
+namespace Kruzya.TelegramBot.RichSiteSummary.Data
+{
+    /// <summary>
+    /// Implements the basic logic for rendering Database Entities in messages.
+    /// </summary>
+    public abstract class RepresentableEntity
+    {
+        protected virtual string ViewableText { get; }
+        protected virtual string ViewableUrl { get; }
+        protected virtual ParseMode DefaultRepresentation { get; }
+
+        public override string ToString() => Representation();
+
+        public string Representation(string text) => Representation(DefaultRepresentation, text);
+        
+        public string Representation() => Representation(DefaultRepresentation);
+        
+        public string Representation(ParseMode parseMode) => Representation(parseMode, ViewableText);
+        
+        public string Representation(ParseMode parseMode, string text)
+        {
+            string content = String.Empty;
+            switch (parseMode)
+            {
+                case ParseMode.Default:
+                    content = RawRepresentation(text);
+                    break;
+
+                case ParseMode.Html:
+                    content = HtmlRepresentation(text);
+                    break;
+                
+                case ParseMode.Markdown:
+                case ParseMode.MarkdownV2:
+                    throw new NotImplementedException();
+            }
+
+            return content;
+        }
+
+        #region Representations
+
+        public string RawRepresentation(string text)
+            => text;
+
+        public string HtmlRepresentation(string text)
+        {
+            var escapedText = HttpUtility.HtmlEncode(text);
+            var escapedUrl = HttpUtility.HtmlAttributeEncode(ViewableUrl);
+
+            return $"<a href=\"{escapedUrl}\">{escapedText}</a>";
+        }
+        
+        #endregion
+    }
+}