🚧 RSS as a module

modules/RichSiteSummary/Data/Post.cs

@@ -0,0 +1,98 @@
+/// 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.ComponentModel.DataAnnotations;
+using System.Text;
+using Telegram.Bot.Types.Enums;
+
+namespace Kruzya.TelegramBot.RichSiteSummary.Data
+{
+    /// <summary>
+    /// Represents a post from feed in database.
+    /// </summary>
+    public class Post : RepresentableEntity
+    {
+        #region RepresentableEntity
+        protected override ParseMode DefaultRepresentation
+        {
+            get => ParseMode.Html;
+        }
+
+        protected override string ViewableText
+        {
+            get => Title;
+        }
+
+        protected override string ViewableUrl
+        {
+            get => Url;
+        }
+        #endregion
+
+        /// <summary>
+        /// The unique post id.
+        /// </summary>
+        [Key]
+        public Guid PostId { get; set; }
+
+        /// <summary>
+        /// The feed unique identifier from where this post is fetched.
+        /// </summary>
+        public Guid FeedId { get; set; }
+        
+        /// <summary>
+        /// The feed from where this post is fetched.
+        /// </summary>
+        [Required]
+        public virtual Feed Feed { get; set; } 
+        
+        /// <summary>
+        /// The post title.
+        /// </summary>
+        [MaxLength(256)]
+        [Required]
+        public string Title { get; set; }
+        
+        /// <summary>
+        /// The URI where this post is located in web.
+        /// </summary>
+        [Required]
+        public string Url { get; set; }
+        
+        /// <summary>
+        /// DateTime when post is created in RSS feed.
+        /// </summary>
+        [Required]
+        public DateTime PostedAt { get; set; }
+        
+        /// <summary>
+        /// DateTime when post is fetched/updated in database.
+        /// </summary>
+        [Required]
+        public DateTime ReceivedAt { get; set; }
+
+        public Post()
+        {
+            PostId = new Guid();
+            ReceivedAt = DateTime.Now;
+        }
+
+        public string MessageText
+        {
+            get
+            {
+                var message = new StringBuilder();
+                message.Append($"{Representation("🗞")} New on {Feed.Representation(ParseMode.Html)}\n");
+                message.Append("\n");
+                message.Append(Title);
+                message.Append("\n");
+                message.Append(Representation("Open in browser"));
+            
+                return message.ToString();
+            }
+        }
+    }
+}