refactor(discord-bot): move differents modes in separate files

apps/discord-bot/src/index.ts

@@ -1,29 +1,12 @@
 import { env } from "~/env";
-import { listTrackedPlayers, trackWovPlayer } from "~/services/tracking";
-import { checkForNewQuest } from "~/services/wov";
-import { createInfoEmbed } from "~/utils/discord";
-import { askForGrinders } from "~/utils/quest";
-import { commands } from "~/commands";
+import { Client, GatewayIntentBits, Partials } from "discord.js";
+import { setupBotMode } from "~/modes/bot";
+import { setupUserMode } from "~/modes/user";
+import { parseArgs } from "~/utils/cli";
 
-import { ChannelType, Client, GatewayIntentBits, Partials } from "discord.js";
-import * as readline from "node:readline";
+const mode = parseArgs(process.argv.slice(2));
 
-// user mode = write in console, send in channel
-const flagIndex = process.argv.indexOf("--user");
-let userMode: { enabled: true; channelId: string } | { enabled: false } = {
-  enabled: false,
-};
-if (flagIndex !== -1) {
-  const channelId = process.argv[flagIndex + 1];
-  if (channelId === undefined) {
-    console.error("ERROR: --user expects channelId as a paramater");
-    process.exit(1);
-  }
-
-  userMode = { enabled: true, channelId };
-}
-
-console.log(`User mode: ${userMode.enabled ? "enabled" : "disabled"}`);
+console.log(`Mode: ${mode.type}`);
 
 const client = new Client({
   intents: [
@@ -35,81 +18,22 @@ const client = new Client({
   partials: [Partials.Message, Partials.Channel],
 });
 
-const questCheckCron = async () => {
-  const quest = await checkForNewQuest();
-  if (quest) {
-    await askForGrinders(quest, client);
+switch (mode.type) {
+  case "user": {
+    setupUserMode(client, mode.channelId);
+    break;
   }
-};
 
-const trackingCron = async () => {
-  const trackedPlayers = await listTrackedPlayers();
-  for (const playerId of trackedPlayers) {
-    const res = await trackWovPlayer(playerId);
-    if (res.event !== "changed") return;
-
-    const chan = client.channels.cache.get(env.DISCORD_TRACKING_CHANNEL);
-    if (!chan?.isSendable()) throw "Invalid tracking channel";
-
-    const lastUsername = res.oldUsernames[res.oldUsernames.length - 1];
-
-    await chan.send(
-      createInfoEmbed(
-        `### [UPDATE] \`${lastUsername}\` -> \`${res.newUsername}\` [\`${playerId}\`]\n\n**Nouveau pseudo:** \`${res.newUsername}\`\n**Anciens pseudos:**\n${res.oldUsernames.map((x) => `- \`${x}\``).join("\n")}`,
-      ),
-    );
+  case "bot": {
+    setupBotMode(client);
+    break;
   }
-};
 
-client.on("ready", async (client) => {
-  console.log(`Logged in as ${client.user.username}`);
-
-  if (userMode.enabled) {
-    const chan = client.channels.cache.get(userMode.channelId);
-    if (chan?.type !== ChannelType.GuildText) {
-      console.error("ERROR: invalid channel");
+  default: {
+    // @ts-ignore
+    console.error(`ERROR: Not implemented: '${mode.type}'`);
     process.exit(1);
   }
-
-    const rl = readline.createInterface({
-      input: process.stdin,
-      output: process.stdout,
-      prompt: `${chan.name} ~ `,
-    });
-
-    rl.prompt();
-
-    rl.on("line", async (line) => {
-      await chan.send(line);
-      rl.prompt();
-    });
-
-    rl.on("close", () => {
-      process.exit(0);
-    });
-  } else {
-    await questCheckCron();
-    setInterval(questCheckCron, env.WOV_FETCH_INTERVAL);
-
-    await trackingCron();
-    setInterval(trackingCron, env.WOV_TRACKING_INTERVAL);
-  }
-});
-
-client.on("messageCreate", async (message) => {
-  if (message.author.bot || userMode.enabled) return;
-
-  if (message.content.startsWith(`<@${client.user!.id}>`)) {
-    const [command, ...args] = message.content
-      .replace(`<@${client.user!.id}>`, "")
-      .trim()
-      .split(" ");
-
-    const commandHandler = commands[command];
-    if (commandHandler) {
-      await commandHandler(message, args);
-    }
-  }
-});
+}
 
 await client.login(env.DISCORD_BOT_TOKEN);

apps/discord-bot/src/modes/bot.ts

@@ -0,0 +1,61 @@
+import type { Client } from "discord.js";
+import { env } from "~/env";
+import { listTrackedPlayers, trackWovPlayer } from "~/services/tracking";
+import { checkForNewQuest } from "~/services/wov";
+import { createInfoEmbed } from "~/utils/discord";
+import { askForGrinders } from "~/utils/quest";
+import { commands } from "~/commands";
+
+const questCheckCron = async (client: Client) => {
+  const quest = await checkForNewQuest();
+  if (quest) {
+    await askForGrinders(quest, client);
+  }
+};
+
+const trackingCron = async (client: Client) => {
+  const trackedPlayers = await listTrackedPlayers();
+  for (const playerId of trackedPlayers) {
+    const res = await trackWovPlayer(playerId);
+    if (res.event !== "changed") return;
+
+    const chan = client.channels.cache.get(env.DISCORD_TRACKING_CHANNEL);
+    if (!chan?.isSendable()) throw "Invalid tracking channel";
+
+    const lastUsername = res.oldUsernames[res.oldUsernames.length - 1];
+
+    await chan.send(
+      createInfoEmbed(
+        `### [UPDATE] \`${lastUsername}\` -> \`${res.newUsername}\` [\`${playerId}\`]\n\n**Nouveau pseudo:** \`${res.newUsername}\`\n**Anciens pseudos:**\n${res.oldUsernames.map((x) => `- \`${x}\``).join("\n")}`,
+      ),
+    );
+  }
+};
+
+export const setupBotMode = (client: Client) => {
+  client.on("clientReady", async (client) => {
+    console.log(`Logged in as ${client.user.username}`);
+
+    await questCheckCron(client);
+    setInterval(() => questCheckCron(client), env.WOV_FETCH_INTERVAL);
+
+    await trackingCron(client);
+    setInterval(() => trackingCron(client), env.WOV_TRACKING_INTERVAL);
+  });
+
+  client.on("messageCreate", async (message) => {
+    if (message.author.bot) return;
+
+    if (message.content.startsWith(`<@${client.user!.id}>`)) {
+      const [command, ...args] = message.content
+        .replace(`<@${client.user!.id}>`, "")
+        .trim()
+        .split(" ");
+
+      const commandHandler = commands[command];
+      if (commandHandler) {
+        await commandHandler(message, args);
+      }
+    }
+  });
+};

apps/discord-bot/src/modes/user.ts

@@ -0,0 +1,34 @@
+import type { Client, TextChannel } from "discord.js";
+import { ChannelType } from "discord.js";
+import * as readline from "node:readline";
+
+export const setupUserMode = (client: Client, channelId: string) => {
+  client.on("clientReady", (client) => {
+    console.log(`Logged in as ${client.user.username}`);
+
+    const chan = client.channels.cache.get(channelId);
+    if (chan?.type !== ChannelType.GuildText) {
+      console.error("ERROR: invalid channel");
+      process.exit(1);
+    }
+
+    const rl = readline.createInterface({
+      input: process.stdin,
+      output: process.stdout,
+      prompt: `${chan.name} ~ `,
+    });
+
+    rl.prompt();
+
+    rl.on("line", async (line) => {
+      if (line.trim().length > 0) {
+        await (chan as TextChannel).send(line);
+      }
+      rl.prompt();
+    });
+
+    rl.on("close", () => {
+      process.exit(0);
+    });
+  });
+};

apps/discord-bot/src/utils/cli.ts

@@ -0,0 +1,32 @@
+type Mode = { type: "bot" } | { type: "user"; channelId: string };
+
+export const parseArgs = (args: string[]): Mode => {
+  let mode: Mode = { type: "bot" };
+
+  for (let i = 0; i < args.length; i++) {
+    const arg = args[i];
+
+    switch (arg) {
+      case "-u":
+      case "--as-user": {
+        const channelId = args[(i += 1)];
+
+        if (!channelId) {
+          console.error(`ERROR: ${arg} requires a channel ID`);
+          process.exit(1);
+        }
+
+        mode = { type: "user", channelId };
+
+        break;
+      }
+
+      default: {
+        console.error(`ERROR: Unrecognized argument: '${arg}'`);
+        process.exit(1);
+      }
+    }
+  }
+
+  return mode;
+};