Get rid of special image directive and support markdown image syntax

src/components/wiki.ts

@@ -4,7 +4,7 @@ import * as Discord from "discord.js";
 import * as fs from "fs";
 import * as path from "path";
 
-import { M } from "../utils.js";
+import { M, unwrap } from "../utils.js";
 import { bot_spam_id, colors, resources_channel_id, rules_channel_id, stackoverflow_emote } from "../common.js";
 import { BotComponent } from "../bot-component.js";
 import { Wheatley } from "../wheatley.js";
@@ -41,6 +41,8 @@ type WikiField = {
 
 enum parse_state { body, field, footer, before_inline_field, done }
 
+const image_regex = /!\[[^\]]*\]\(([^)]*)\)/;
+
 /**
  * One-time use class for parsing articles.
  */
@@ -98,6 +100,8 @@ class ArticleParser {
             this.parse_directive(directive);
         } else if(trimmed === "---") {
             this.parse_directive(trimmed);
+        } else if(trimmed.match(image_regex)) {
+            this.parse_directive(trimmed);
         } else {
             this.parse_regular_line(line);
         }
@@ -140,8 +144,9 @@ class ArticleParser {
             this.set_author = true;
         } else if(directive === "no embed") {
             this.no_embed = true;
-        } else if (directive.startsWith("image ")) {
-            this.image = directive.substring("image ".length).trim();
+        } else if(directive.match(image_regex)) {
+            const match = unwrap(directive.match(image_regex))[1];
+            this.image = match.trim();
         } else if(directive.startsWith("alias ")) {
             const aliases = directive
                 .substring("alias ".length)

wiki_articles/README.md

@@ -51,7 +51,7 @@ This is a part of the embed at the bottom, displayed with small font.
 
 ### Image
 ```md
-<!-- image https://xyz.xyz/image.png -->
+![](https://xyz.xyz/image.png)
 ```
 Any embed can contain exactly one image.
 This image is displayed at the bottom of the embed, after any fields.

wiki_articles/special_members.md

@@ -1,5 +1,5 @@
 # Special Member Functions in C++
-<!-- image https://cdn.discordapp.com/attachments/861906541823918101/877150143089098792/b2VBV.png -->
+![](https://cdn.discordapp.com/attachments/861906541823918101/877150143089098792/b2VBV.png)
 
 Special member functions in C++, such as constructors must be handled carefully to manage resources of a class.
 The C++ community has agreed on three guidelines: