refactor(plugin): extract common utils and moderator discord helpers

plugin/core/moderator-discord.ts

@@ -0,0 +1,49 @@
+import type { OpenClawPluginApi } from "openclaw/plugin-sdk";
+
+function userIdFromToken(token: string): string | undefined {
+  try {
+    const segment = token.split(".")[0];
+    const padded = segment + "=".repeat((4 - (segment.length % 4)) % 4);
+    return Buffer.from(padded, "base64").toString("utf8");
+  } catch {
+    return undefined;
+  }
+}
+
+export function resolveDiscordUserId(api: OpenClawPluginApi, accountId: string): string | undefined {
+  const root = (api.config as Record<string, unknown>) || {};
+  const channels = (root.channels as Record<string, unknown>) || {};
+  const discord = (channels.discord as Record<string, unknown>) || {};
+  const accounts = (discord.accounts as Record<string, Record<string, unknown>>) || {};
+  const acct = accounts[accountId];
+  if (!acct?.token || typeof acct.token !== "string") return undefined;
+  return userIdFromToken(acct.token);
+}
+
+export async function sendModeratorMessage(
+  token: string,
+  channelId: string,
+  content: string,
+  logger: { info: (msg: string) => void; warn: (msg: string) => void },
+): Promise<boolean> {
+  try {
+    const r = await fetch(`https://discord.com/api/v10/channels/${channelId}/messages`, {
+      method: "POST",
+      headers: {
+        Authorization: `Bot ${token}`,
+        "Content-Type": "application/json",
+      },
+      body: JSON.stringify({ content }),
+    });
+    if (!r.ok) {
+      const text = await r.text();
+      logger.warn(`dirigent: moderator send failed (${r.status}): ${text}`);
+      return false;
+    }
+    logger.info(`dirigent: moderator message sent to channel=${channelId}`);
+    return true;
+  } catch (err) {
+    logger.warn(`dirigent: moderator send error: ${String(err)}`);
+    return false;
+  }
+}