fix: only use oauth redirects and add website to app registration details

server/api/[server]/login.ts

@@ -1,19 +1,21 @@
 import { stringifyQuery } from 'ufo'
-import { HOST_URL, getApp } from '~/server/shared'
+import { getApp, getRedirectURI } from '~/server/shared'
 
 export default defineEventHandler(async (event) => {
-  const server = event.context.params.server
+  const { server } = getRouterParams(event)
   const app = await getApp(server)
 
   if (!app) {
-    event.node.res.statusCode = 400
-    return `App not registered for server: ${server}`
+    throw createError({
+      statusCode: 400,
+      statusMessage: `App not registered for server: ${server}`,
+    })
   }
 
   const query = stringifyQuery({
     client_id: app.client_id,
     scope: 'read write follow push',
-    redirect_uri: `${HOST_URL}/api/${server}/oauth`,
+    redirect_uri: getRedirectURI(server),
     response_type: 'code',
   })
   const url = `https://${server}/oauth/authorize?${query}`