tags: add !tag list command

src/data/GuildTags.ts

@@ -10,6 +10,14 @@ export class GuildTags extends BaseRepository {
     this.tags = getRepository(Tag);
   }
 
+  async all(): Promise<Tag[]> {
+    return this.tags.find({
+      where: {
+        guild_id: this.guildId
+      }
+    });
+  }
+
   async find(tag): Promise<Tag> {
     return this.tags.findOne({
       where: {

src/plugins/Tags.ts

@@ -4,7 +4,7 @@ import { errorMessage, successMessage } from "../utils";
 import { GuildTags } from "../data/GuildTags";
 
 export class TagsPlugin extends Plugin {
-  public static pluginName = 'tags';
+  public static pluginName = "tags";
 
   protected tags: GuildTags;
 
@@ -34,6 +34,22 @@ export class TagsPlugin extends Plugin {
     this.tags = GuildTags.getInstance(this.guildId);
   }
 
+  @d.command("tag list")
+  @d.permission("create")
+  async tagListCmd(msg: Message) {
+    const tags = await this.tags.all();
+    if (tags.length === 0) {
+      msg.channel.createMessage(`No tags created yet! Use \`tag create\` command to create one.`);
+      return;
+    }
+
+    const prefix = this.configValueForMsg(msg, "prefix");
+    const tagNames = tags.map(t => t.tag).sort();
+    msg.channel.createMessage(`
+      Available tags (use with ${prefix}tag): \`\`\`${tagNames.join(", ")}\`\`\`
+    `);
+  }
+
   @d.command("tag delete", "<tag:string>")
   @d.permission("create")
   async deleteTagCmd(msg: Message, args: { tag: string }) {