Add MessageSaver plugin. Fix some buggy queries.

src/plugins/MessageSaver.ts

@@ -0,0 +1,63 @@
+import { Plugin, decorators as d } from "knub";
+import { Message } from "eris";
+import { GuildSavedMessages } from "../data/GuildSavedMessages";
+import { ISavedMessageData } from "../data/entities/SavedMessage";
+import moment from "moment-timezone";
+
+export class MessageSaverPlugin extends Plugin {
+  protected messages: GuildSavedMessages;
+
+  onLoad() {
+    this.messages = GuildSavedMessages.getInstance(this.guildId);
+  }
+
+  protected msgToSavedMessageData(msg: Message): ISavedMessageData {
+    return {
+      attachments: msg.attachments,
+      author: {
+        username: msg.author.username,
+        discriminator: msg.author.discriminator
+      },
+      content: msg.content,
+      embeds: msg.embeds
+    };
+  }
+
+  @d.event("messageCreate", "guild", false)
+  async onMessageCreate(msg: Message) {
+    // Only save regular chat messages
+    if (msg.type !== 0) {
+      return;
+    }
+
+    const data: ISavedMessageData = this.msgToSavedMessageData(msg);
+    const postedAt = moment.utc(msg.timestamp, "x").format("YYYY-MM-DD HH:mm:ss.SSS");
+
+    await this.messages.create({
+      id: msg.id,
+      channel_id: msg.channel.id,
+      user_id: msg.author.id,
+      is_bot: msg.author.bot,
+      data,
+      posted_at: postedAt
+    });
+  }
+
+  @d.event("messageDelete", "guild", false)
+  async onMessageDelete(msg: Message) {
+    const savedMessage = await this.messages.find(msg.id);
+    if (!savedMessage) return;
+
+    await this.messages.markAsDeleted(msg.id);
+  }
+
+  @d.event("messageUpdate", "guild", false)
+  async onMessageUpdate(msg: Message) {
+    const savedMessage = await this.messages.find(msg.id);
+    if (!savedMessage) return;
+
+    const newData = this.msgToSavedMessageData(msg);
+
+    await this.messages.edit(msg.id, newData);
+  }
+}