fix: honor NEXT_PUBLIC_WEB_PORT in website fallback

Author: brandonkachen

sdk/src/constants.ts

@@ -4,9 +4,37 @@ export const IS_DEV = process.env.NEXT_PUBLIC_CB_ENVIRONMENT === 'dev'
 export const IS_TEST = process.env.NEXT_PUBLIC_CB_ENVIRONMENT === 'test'
 export const IS_PROD = !IS_DEV && !IS_TEST
 
-export const WEBSITE_URL =
-  process.env.NEXT_PUBLIC_CODEBUFF_APP_URL ||
-  (IS_PROD ? 'https://codebuff.com' : 'http://localhost:3000')
+const normalizeLocalWebPort = (env: NodeJS.ProcessEnv): string => {
+  const port = env.NEXT_PUBLIC_WEB_PORT
+  if (port && /^\d+$/.test(port)) {
+    return port
+  }
+  return '3000'
+}
+
+export const resolveWebsiteUrl = (
+  env: NodeJS.ProcessEnv = process.env,
+): string => {
+  const explicitUrl = env.NEXT_PUBLIC_CODEBUFF_APP_URL
+  if (explicitUrl) {
+    return explicitUrl
+  }
+
+  const envName = env.NEXT_PUBLIC_CB_ENVIRONMENT
+  const isProdEnv =
+    envName === undefined
+      ? IS_PROD
+      : envName !== 'dev' && envName !== 'test'
+
+  if (isProdEnv) {
+    return 'https://codebuff.com'
+  }
+
+  const port = normalizeLocalWebPort(env)
+  return `http://localhost:${port}`
+}
+
+export const WEBSITE_URL = resolveWebsiteUrl()
 
 const DEFAULT_BACKEND_URL = 'manicode-backend.onrender.com'
 const DEFAULT_BACKEND_URL_DEV = 'localhost:4242'