Output date range in the export file

Closes #56

DiscordChatExporter.Core/Models/ChatLog.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Linq;
 
 namespace DiscordChatExporter.Core.Models
@@ -9,17 +10,23 @@ namespace DiscordChatExporter.Core.Models
 
         public Channel Channel { get; }
 
+        public DateTime? From { get; }
+
+        public DateTime? To { get; }
+
         public IReadOnlyList<MessageGroup> MessageGroups { get; }
 
         public int TotalMessageCount => MessageGroups.Sum(g => g.Messages.Count);
 
         public Mentionables Mentionables { get; }
 
-        public ChatLog(Guild guild, Channel channel, IReadOnlyList<MessageGroup> messageGroups,
-            Mentionables mentionables)
+        public ChatLog(Guild guild, Channel channel, DateTime? from, DateTime? to,
+            IReadOnlyList<MessageGroup> messageGroups, Mentionables mentionables)
         {
             Guild = guild;
             Channel = channel;
+            From = from;
+            To = to;
             MessageGroups = messageGroups;
             Mentionables = mentionables;
         }

DiscordChatExporter.Core/Resources/ExportTemplates/Html/Core.html

@@ -17,8 +17,24 @@
     <div class="info__metadata">
         <div class="info__guild-name">{{ Guild.Name | HtmlEncode }}</div>
         <div class="info__channel-name">{{ Channel.Name | HtmlEncode }}</div>
-        <div class="info__channel-topic">{{ Channel.Topic | HtmlEncode }}</div>
+        
+        {{ if Channel.Topic }}
+            <div class="info__channel-topic">{{ Channel.Topic | HtmlEncode }}</div>
+        {{ end }}
+
         <div class="info__channel-message-count">{{ TotalMessageCount | Format "N0" }} messages</div>
+        
+        {{ if From || To }}
+            <div class="info__channel-date-range">
+                {{ if From && To }}
+                    Between {{ From | FormatDate }} and {{ To | FormatDate }}
+                {{ else if From }}
+                    After {{ From | FormatDate }}
+                {{ else if To }}
+                    Before {{ To | FormatDate }}
+                {{ end }}
+            </div>
+        {{ end }}
     </div>
 </div>
 

DiscordChatExporter.Core/Resources/ExportTemplates/Html/Shared.css

@@ -65,8 +65,8 @@ img {
 }
 
 .info__guild-icon {
-    max-width: 64px;
-    max-height: 64px;
+    max-width: 88px;
+    max-height: 88px;
 }
 
 .info__metadata {
@@ -90,6 +90,10 @@ img {
     margin-top: 2px;
 }
 
+.info__channel-date-range {
+    margin-top: 2px;
+}
+
 /* === CHATLOG === */
 
 .chatlog {

DiscordChatExporter.Core/Resources/ExportTemplates/PlainText.txt

@@ -3,6 +3,7 @@ Guild:    {{ Guild.Name }}
 Channel:  {{ Channel.Name }}
 Topic:    {{ Channel.Topic }}
 Messages: {{ TotalMessageCount | Format "N0" }}
+Range:    {{ if From }}{{ From | FormatDate }} {{ end }}{{ if From || To }}->{{ end }}{{ if To }} {{ To | FormatDate }}{{ end }}
 ==============================================================
 
 {{~ for group in MessageGroups ~}}