refactoring the api endpoints to be separate files to reduce context usage

apps/server/src/routes/setup/common.ts

@@ -0,0 +1,68 @@
+/**
+ * Common utilities and state for setup routes
+ */
+
+import { createLogger } from "../../lib/logger.js";
+import path from "path";
+import fs from "fs/promises";
+
+const logger = createLogger("Setup");
+
+// Storage for API keys (in-memory cache)
+export const apiKeys: Record<string, string> = {};
+
+/**
+ * Helper to persist API keys to .env file
+ */
+export async function persistApiKeyToEnv(
+  key: string,
+  value: string
+): Promise<void> {
+  const envPath = path.join(process.cwd(), ".env");
+
+  try {
+    let envContent = "";
+    try {
+      envContent = await fs.readFile(envPath, "utf-8");
+    } catch {
+      // .env file doesn't exist, we'll create it
+    }
+
+    // Parse existing env content
+    const lines = envContent.split("\n");
+    const keyRegex = new RegExp(`^${key}=`);
+    let found = false;
+    const newLines = lines.map((line) => {
+      if (keyRegex.test(line)) {
+        found = true;
+        return `${key}=${value}`;
+      }
+      return line;
+    });
+
+    if (!found) {
+      // Add the key at the end
+      newLines.push(`${key}=${value}`);
+    }
+
+    await fs.writeFile(envPath, newLines.join("\n"));
+    logger.info(`[Setup] Persisted ${key} to .env file`);
+  } catch (error) {
+    logger.error(`[Setup] Failed to persist ${key} to .env:`, error);
+    throw error;
+  }
+}
+
+/**
+ * Get error message from error object
+ */
+export function getErrorMessage(error: unknown): string {
+  return error instanceof Error ? error.message : "Unknown error";
+}
+
+/**
+ * Log error details consistently
+ */
+export function logError(error: unknown, context: string): void {
+  logger.error(`❌ ${context}:`, error);
+}