feat: split resolvePlayer

src/core/discord/resolvePlayerFromCommand.ts

@@ -0,0 +1,52 @@
+import { CacheType, ChatInputCommandInteraction } from 'discord.js';
+import { BlitzServer } from '../../constants/servers.js';
+import listAccountsPanServer, {
+  usernamePatternWithoutPosition,
+} from '../blitz/listAccountsPanServer.js';
+import errorWithCause from '../node/errorWithCause.js';
+
+export const serverAndIdPattern = /(com|eu|asia)\/[0-9]+/;
+
+export interface ResolvedPlayer {
+  server: BlitzServer;
+  id: number;
+}
+
+export default async function resolvePlayerFromCommand(
+  interaction: ChatInputCommandInteraction<CacheType>,
+) {
+  const commandUsername = interaction.options.getString('username');
+  const displayName = interaction.guild?.members.cache
+    .get(interaction.user.id)
+    ?.displayName.match(usernamePatternWithoutPosition)?.[0];
+  const username = commandUsername ?? displayName;
+
+  if (username === undefined) {
+    throw errorWithCause(
+      'Username could not be inferred',
+      "You didn't provide me a username in the command nor was I able to infer your Blitz username from your Discord nickname. Try providing a username manually in the command or using the `/verify` command to set your Discord nickname to your Blitz username.",
+    );
+  }
+
+  if (serverAndIdPattern.test(username)) {
+    const [server, accountId] = username.split('/');
+    return {
+      server: server as BlitzServer,
+      id: Number(accountId),
+    } satisfies ResolvedPlayer;
+  } else {
+    const accounts = await listAccountsPanServer(username);
+
+    if (accounts[0]) {
+      return {
+        server: accounts[0].server,
+        id: accounts[0].account_id,
+      } satisfies ResolvedPlayer;
+    } else {
+      throw errorWithCause(
+        'Could not find user',
+        `I couldn't find user \`${username}\`. Try providing a valid username manually or using the \`/verify\` command to set your Discord nickname to your Blitz username.`,
+      );
+    }
+  }
+}