feat(form) : force user to join discord server

lib/discord.ts

@@ -23,18 +23,55 @@ interface CacheEntry<T> {
 const rolesCache: { entry: CacheEntry<DiscordRole[]> | null } = { entry: null };
 const profileCache = new Map<string, CacheEntry<DiscordMemberProfile>>();
 const CACHE_TTL = 60_000;
+const DEFAULT_DISCORD_GUILD_ID = "1302977523310923847";
 
 function getCached<T>(entry: CacheEntry<T> | null | undefined): T | null {
   if (entry && Date.now() < entry.expiresAt) return entry.data;
   return null;
 }
 
+function getDiscordGuildId() {
+  return process.env.DISCORD_GUILD_ID || DEFAULT_DISCORD_GUILD_ID;
+}
+
+export async function addDiscordGuildMember(discordId: string, accessToken: string): Promise<boolean> {
+  const token = process.env.DISCORD_BOT_TOKEN;
+  const guildId = getDiscordGuildId();
+  if (!token || !guildId || !discordId || !accessToken) return false;
+
+  try {
+    const res = await fetch(
+      `https://discord.com/api/v10/guilds/${encodeURIComponent(guildId)}/members/${encodeURIComponent(discordId)}`,
+      {
+        method: "PUT",
+        headers: {
+          Authorization: `Bot ${token}`,
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify({ access_token: accessToken }),
+        signal: AbortSignal.timeout(5000),
+      },
+    );
+
+    if (res.status === 201 || res.status === 204) return true;
+
+    const body = await res.text().catch(() => "");
+    console.error(
+      `Failed to add Discord member ${discordId} to guild ${guildId}: ${res.status}${body ? ` ${body.slice(0, 300)}` : ""}`,
+    );
+    return false;
+  } catch (error) {
+    console.error(`Failed to add Discord member ${discordId} to guild ${guildId}`, error);
+    return false;
+  }
+}
+
 export async function getGuildRolesInternal(): Promise<DiscordRole[]> {
   const cached = getCached(rolesCache.entry);
   if (cached) return cached;
 
   const token = process.env.DISCORD_BOT_TOKEN;
-  const guildId = process.env.DISCORD_GUILD_ID;
+  const guildId = getDiscordGuildId();
   if (!token || !guildId) return [];
 
   try {
@@ -69,7 +106,7 @@ export async function getGuildRolesInternal(): Promise<DiscordRole[]> {
 
 export async function getGuildMemberRoles(discordId: string): Promise<string[]> {
   const token = process.env.DISCORD_BOT_TOKEN;
-  const guildId = process.env.DISCORD_GUILD_ID;
+  const guildId = getDiscordGuildId();
   if (!token || !guildId || !discordId) return [];
 
   try {
@@ -93,7 +130,7 @@ export async function getDiscordMemberProfile(discordId: string): Promise<Discor
   if (cached) return cached;
 
   const token = process.env.DISCORD_BOT_TOKEN;
-  const guildId = process.env.DISCORD_GUILD_ID;
+  const guildId = getDiscordGuildId();
   if (!token || !guildId || !discordId) return null;
 
   try {