feat: save deleted spam logs; server spam logs from a web server; update Knub to 9.6.4

src/data/DefaultLogMessages.json

@@ -35,7 +35,7 @@
 
   "COMMAND": "🤖 **{member.user.username}#{member.user.discriminator}** (`{member.id}`) used command in **#{channel.name}**:\n`{command}`",
 
-  "SPAM_DELETE": "🛑 **{member.user.username}#{member.user.discriminator}** (`{member.id}`) spam deleted in **#{channel.name}**: {description} (more than {limit} in {interval}s)",
+  "SPAM_DELETE": "🛑 **{member.user.username}#{member.user.discriminator}** (`{member.id}`) spam deleted in **#{channel.name}**: {description} (more than {limit} in {interval}s) {logUrl}",
   "CENSOR": "🛑 **{member.user.username}#{member.user.discriminator}** (`{member.id}`) censored message in **#{channel.name}** (`{channel.id}`) {reason}:\n```{messageText}```",
   "CLEAN": "🚿 **{mod.username}#{mod.discriminator}** (`{mod.id}`) cleaned **{count}** message(s) in **#{channel.name}**",
 

src/data/GuildSpamLogs.ts

@@ -0,0 +1,72 @@
+import uuid from "uuid/v4"; // tslint:disable-line
+import moment from "moment-timezone";
+import knex from "../knex";
+import SpamLog from "../models/SpamLog";
+import { Message } from "eris";
+import { formatTemplateString, stripObjectToScalars, trimLines } from "../utils";
+
+const EXPIRY_DAYS = 7;
+const MESSAGE_FORMAT =
+  "[{timestamp}] [{message.id}] {user.username}#{user.discriminator}: {message.content}{attachments}";
+
+function cleanExpiredLogs() {
+  knex("spam_logs")
+    .where("expires_at", "<=", knex.raw("NOW()"))
+    .delete();
+}
+
+cleanExpiredLogs();
+setInterval(cleanExpiredLogs, 1000 * 60 * 60); // Clean expired logs every hour
+
+export class GuildSpamLogs {
+  protected guildId: string;
+
+  constructor(guildId) {
+    this.guildId = guildId;
+  }
+
+  async find(id: string): Promise<SpamLog> {
+    const result = await knex("spam_logs")
+      .where("id", id)
+      .first();
+
+    return result ? new SpamLog(result) : null;
+  }
+
+  /**
+   * @return ID of the created spam log entry
+   */
+  async createFromMessages(messages: Message[], header: string = null) {
+    const lines = messages.map(msg => {
+      return formatTemplateString(MESSAGE_FORMAT, {
+        user: stripObjectToScalars(msg.author),
+        message: stripObjectToScalars(msg),
+        timestamp: moment(msg.timestamp).format("YYYY-MM-DD HH:mm:ss zz"),
+        attachments: msg.attachments.length
+          ? ` (message contained ${msg.attachments.length} attachment(s))`
+          : ""
+      });
+    });
+
+    const id = uuid();
+    const now = moment().format("YYYY-MM-DD HH:mm:ss zz");
+    const expiresAt = moment().add(EXPIRY_DAYS, "days");
+
+    const body = trimLines(`
+      Log file generated on ${now}. Expires at ${expiresAt.format("YYYY-MM-DD HH:mm:ss zz")}.${
+      header ? "\n" + header : ""
+    }
+      
+      ${lines.join("\n")}
+    `);
+
+    await knex("spam_logs").insert({
+      id,
+      guild_id: this.guildId,
+      body,
+      expires_at: expiresAt.format("YYYY-MM-DD HH:mm:ss")
+    });
+
+    return id;
+  }
+}