feat: replace nextjs-config with environment variables (#632)

* chore: remove nextjs-config

* build fix

* update readme

* explicit nextjs env vars + remove feature-unrelated things and obsolete vars from config

* full config removal

* remove force-dynamic from pages

* compile fix

* restore claude-deleted tests

* better .env.example

---------

Co-authored-by: Igor Loskutov <igor.loskutoff@gmail.com>

www/app/(app)/layout.tsx

@@ -1,5 +1,5 @@
 import { Container, Flex, Link } from "@chakra-ui/react";
-import { getConfig } from "../lib/edgeConfig";
+import { featureEnabled } from "../lib/features";
 import NextLink from "next/link";
 import Image from "next/image";
 import UserInfo from "../(auth)/userInfo";
@@ -11,8 +11,6 @@ export default async function AppLayout({
 }: {
   children: React.ReactNode;
 }) {
-  const config = await getConfig();
-  const { requireLogin, privacy, browse, rooms } = config.features;
   return (
     <Container
       minW="100vw"
@@ -58,7 +56,7 @@ export default async function AppLayout({
           >
             Create
           </Link>
-          {browse ? (
+          {featureEnabled("browse") ? (
             <>
               &nbsp;·&nbsp;
               <Link href="/browse" as={NextLink} className="font-light px-2">
@@ -68,7 +66,7 @@ export default async function AppLayout({
           ) : (
             <></>
           )}
-          {rooms ? (
+          {featureEnabled("rooms") ? (
             <>
               &nbsp;·&nbsp;
               <Link href="/rooms" as={NextLink} className="font-light px-2">
@@ -78,7 +76,7 @@ export default async function AppLayout({
           ) : (
             <></>
           )}
-          {requireLogin ? (
+          {featureEnabled("requireLogin") ? (
             <>
               &nbsp;·&nbsp;
               <UserInfo />

www/app/(app)/transcripts/[transcriptId]/_components/TopicList.tsx

@@ -3,10 +3,11 @@ import ScrollToBottom from "../../scrollToBottom";
 import { Topic } from "../../webSocketTypes";
 import useParticipants from "../../useParticipants";
 import { Box, Flex, Text, Accordion } from "@chakra-ui/react";
-import { featureEnabled } from "../../../../domainContext";
 import { TopicItem } from "./TopicItem";
 import { TranscriptStatus } from "../../../../lib/transcript";
 
+import { featureEnabled } from "../../../../lib/features";
+
 type TopicListProps = {
   topics: Topic[];
   useActiveTopic: [

www/app/(app)/transcripts/new/page.tsx

@@ -9,7 +9,6 @@ import { useRouter } from "next/navigation";
 import useCreateTranscript from "../createTranscript";
 import SelectSearch from "react-select-search";
 import { supportedLanguages } from "../../../supportedLanguages";
-import { featureEnabled } from "../../../domainContext";
 import {
   Flex,
   Box,
@@ -21,10 +20,9 @@ import {
   Spacer,
 } from "@chakra-ui/react";
 import { useAuth } from "../../../lib/AuthProvider";
-import type { components } from "../../../reflector-api";
+import { featureEnabled } from "../../../lib/features";
 
 const TranscriptCreate = () => {
-  const isClient = typeof window !== "undefined";
   const router = useRouter();
   const auth = useAuth();
   const isAuthenticated = auth.status === "authenticated";
@@ -176,7 +174,7 @@ const TranscriptCreate = () => {
                     placeholder="Choose your language"
                   />
                 </Box>
-                {isClient && !loading ? (
+                {!loading ? (
                   permissionOk ? (
                     <Spacer />
                   ) : permissionDenied ? (

www/app/(app)/transcripts/shareAndPrivacy.tsx

@@ -1,5 +1,4 @@
 import { useEffect, useState } from "react";
-import { featureEnabled } from "../../domainContext";
 
 import { ShareMode, toShareMode } from "../../lib/shareMode";
 import type { components } from "../../reflector-api";
@@ -24,6 +23,8 @@ import ShareCopy from "./shareCopy";
 import ShareZulip from "./shareZulip";
 import { useAuth } from "../../lib/AuthProvider";
 
+import { featureEnabled } from "../../lib/features";
+
 type ShareAndPrivacyProps = {
   finalSummaryRef: any;
   transcriptResponse: GetTranscript;

www/app/(app)/transcripts/shareLink.tsx

@@ -1,8 +1,9 @@
 import React, { useState, useRef, useEffect, use } from "react";
-import { featureEnabled } from "../../domainContext";
 import { Button, Flex, Input, Text } from "@chakra-ui/react";
 import QRCode from "react-qr-code";
 
+import { featureEnabled } from "../../lib/features";
+
 type ShareLinkProps = {
   transcriptId: string;
 };

www/app/(app)/transcripts/shareZulip.tsx

@@ -1,5 +1,4 @@
 import { useState, useEffect, useMemo } from "react";
-import { featureEnabled } from "../../domainContext";
 import type { components } from "../../reflector-api";
 
 type GetTranscript = components["schemas"]["GetTranscript"];
@@ -25,6 +24,8 @@ import {
   useTranscriptPostToZulip,
 } from "../../lib/apiHooks";
 
+import { featureEnabled } from "../../lib/features";
+
 type ShareZulipProps = {
   transcriptResponse: GetTranscript;
   topicsResponse: GetTranscriptTopic[];

www/app/(app)/transcripts/useMp3.ts

@@ -1,7 +1,7 @@
-import { useContext, useEffect, useState } from "react";
-import { DomainContext } from "../../domainContext";
+import { useEffect, useState } from "react";
 import { useTranscriptGet } from "../../lib/apiHooks";
 import { useAuth } from "../../lib/AuthProvider";
+import { API_URL } from "../../lib/apiClient";
 
 export type Mp3Response = {
   media: HTMLMediaElement | null;
@@ -19,7 +19,6 @@ const useMp3 = (transcriptId: string, waiting?: boolean): Mp3Response => {
     null,
   );
   const [audioDeleted, setAudioDeleted] = useState<boolean | null>(null);
-  const { api_url } = useContext(DomainContext);
   const auth = useAuth();
   const accessTokenInfo =
     auth.status === "authenticated" ? auth.accessToken : null;
@@ -78,7 +77,7 @@ const useMp3 = (transcriptId: string, waiting?: boolean): Mp3Response => {
 
     // Audio is not deleted, proceed to load it
     audioElement = document.createElement("audio");
-    audioElement.src = `${api_url}/v1/transcripts/${transcriptId}/audio/mp3`;
+    audioElement.src = `${API_URL}/v1/transcripts/${transcriptId}/audio/mp3`;
     audioElement.crossOrigin = "anonymous";
     audioElement.preload = "auto";
 
@@ -110,7 +109,7 @@ const useMp3 = (transcriptId: string, waiting?: boolean): Mp3Response => {
         if (handleError) audioElement.removeEventListener("error", handleError);
       }
     };
-  }, [transcriptId, transcript, later, api_url]);
+  }, [transcriptId, transcript, later]);
 
   const getNow = () => {
     setLater(false);

www/app/(app)/transcripts/useWebSockets.ts

@@ -1,13 +1,12 @@
-import { useContext, useEffect, useState } from "react";
+import { useEffect, useState } from "react";
 import { Topic, FinalSummary, Status } from "./webSocketTypes";
 import { useError } from "../../(errors)/errorContext";
-import { DomainContext } from "../../domainContext";
 import type { components } from "../../reflector-api";
 type AudioWaveform = components["schemas"]["AudioWaveform"];
 type GetTranscriptSegmentTopic =
   components["schemas"]["GetTranscriptSegmentTopic"];
 import { useQueryClient } from "@tanstack/react-query";
-import { $api } from "../../lib/apiClient";
+import { $api, WEBSOCKET_URL } from "../../lib/apiClient";
 
 export type UseWebSockets = {
   transcriptTextLive: string;
@@ -37,7 +36,6 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
   const [status, setStatus] = useState<Status | null>(null);
   const { setError } = useError();
 
-  const { websocket_url: websocketUrl } = useContext(DomainContext);
   const queryClient = useQueryClient();
 
   const [accumulatedText, setAccumulatedText] = useState<string>("");
@@ -328,7 +326,7 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
 
     if (!transcriptId) return;
 
-    const url = `${websocketUrl}/v1/transcripts/${transcriptId}/events`;
+    const url = `${WEBSOCKET_URL}/v1/transcripts/${transcriptId}/events`;
     let ws = new WebSocket(url);
 
     ws.onopen = () => {
@@ -494,7 +492,7 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
     return () => {
       ws.close();
     };
-  }, [transcriptId, websocketUrl]);
+  }, [transcriptId]);
 
   return {
     transcriptTextLive,