S6: refactor UI to shadcn components, design system enforcement

- App: use Sheet for mobile sidebar (proper shadcn component)
- ComposeBox: use ToggleGroup + Button + Input (no raw HTML)
- Use Tailwind text scale (text-xs, text-sm) instead of arbitrary text-[10px]
- Design system rule expanded with color palette, forbidden patterns

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-03-29 19:56:44 +02:00
parent 791d7e2f69
commit af183abc42
7 changed files with 514 additions and 96 deletions

View File

@@ -1,27 +1,28 @@
import { useCallback, useEffect, useRef, useState } from "react";
import type { Channel } from "@/types/Channel";
import type { Message } from "@/types/Message";
import { getChannels, getMessages, getCurrentUsername } from "@/api";
import { getChannels, getMessages } from "@/api";
import { ChannelSidebar } from "@/components/ChannelSidebar";
import { MessageItem } from "@/components/MessageItem";
import { ComposeBox } from "@/components/ComposeBox";
import { Sheet, SheetContent, SheetTrigger } from "@/components/ui/sheet";
import { Button } from "@/components/ui/button";
export default function App() {
const [channels, setChannels] = useState<Channel[]>([]);
const [activeChannelId, setActiveChannelId] = useState<string | null>(null);
const [messages, setMessages] = useState<Message[]>([]);
const [replyTo, setReplyTo] = useState<string | null>(null);
const [sheetOpen, setSheetOpen] = useState(false);
const scrollRef = useRef<HTMLDivElement>(null);
const prevMsgCountRef = useRef(0);
const activeChannelRef = useRef(activeChannelId);
// Keep ref in sync
activeChannelRef.current = activeChannelId;
const loadChannels = useCallback(async () => {
const chs = await getChannels();
setChannels(chs);
// Auto-select first channel only if none selected
setActiveChannelId((prev) => (prev ? prev : chs[0]?.id ?? null));
}, []);
@@ -30,7 +31,6 @@ export default function App() {
if (!channelId) return;
try {
const msgs = await getMessages(channelId);
// Only update if we're still on the same channel (prevent race)
if (activeChannelRef.current === channelId) {
setMessages(msgs);
}
@@ -39,20 +39,15 @@ export default function App() {
}
}, []);
// Initial channel load
useEffect(() => {
loadChannels();
}, [loadChannels]);
useEffect(() => { loadChannels(); }, [loadChannels]);
// Load messages on channel switch
useEffect(() => {
setMessages([]); // Clear immediately on switch
setMessages([]);
setReplyTo(null);
prevMsgCountRef.current = 0;
loadMessages();
}, [activeChannelId, loadMessages]);
// Auto-scroll only when NEW messages arrive (not on every poll)
useEffect(() => {
if (messages.length > prevMsgCountRef.current && scrollRef.current) {
scrollRef.current.scrollTop = scrollRef.current.scrollHeight;
@@ -60,7 +55,6 @@ export default function App() {
prevMsgCountRef.current = messages.length;
}, [messages]);
// Poll until WebSocket (S5)
useEffect(() => {
const interval = setInterval(loadMessages, 3000);
return () => clearInterval(interval);
@@ -68,69 +62,63 @@ export default function App() {
const messagesById = new Map(messages.map((m) => [m.id, m]));
const activeChannel = channels.find((c) => c.id === activeChannelId);
const [sidebarOpen, setSidebarOpen] = useState(false);
const sidebar = (
<ChannelSidebar
channels={channels}
activeId={activeChannelId}
onSelect={(id) => {
setActiveChannelId(id);
setSheetOpen(false);
}}
onChannelCreated={loadChannels}
/>
);
return (
<div className="flex h-full relative">
{/* Mobile sidebar overlay */}
{sidebarOpen && (
<div
className="fixed inset-0 bg-black/50 z-40 md:hidden"
onClick={() => setSidebarOpen(false)}
onKeyDown={() => {}}
role="button"
tabIndex={-1}
/>
)}
<div className={`${sidebarOpen ? "fixed inset-y-0 left-0 z-50" : "hidden"} md:relative md:block`}>
<ChannelSidebar
channels={channels}
activeId={activeChannelId}
onSelect={(id) => {
setActiveChannelId(id);
setSidebarOpen(false);
}}
onChannelCreated={loadChannels}
/>
<div className="flex h-full">
{/* Desktop sidebar */}
<div className="hidden md:block">
{sidebar}
</div>
<div className="flex-1 flex flex-col min-w-0">
{/* Channel header */}
<div className="px-4 py-2 border-b border-border flex items-center gap-2">
<button
type="button"
onClick={() => setSidebarOpen(true)}
className="md:hidden text-muted-foreground hover:text-foreground text-[14px] mr-1"
>
=
</button>
<div className="px-3 py-2 md:px-4 border-b border-border flex items-center gap-2">
{/* Mobile: Sheet trigger */}
<Sheet open={sheetOpen} onOpenChange={setSheetOpen}>
<SheetTrigger asChild>
<Button variant="ghost" size="sm" className="md:hidden p-1 h-8 w-8 text-muted-foreground">
=
</Button>
</SheetTrigger>
<SheetContent side="left" className="p-0 w-64 bg-background">
{sidebar}
</SheetContent>
</Sheet>
{activeChannel ? (
<>
<span className="text-muted-foreground">#</span>
<span className="font-bold text-[14px]">
{activeChannel.name}
</span>
<span className="font-bold text-sm">{activeChannel.name}</span>
{activeChannel.description && (
<span className="text-[11px] text-muted-foreground ml-2">
<span className="text-xs text-muted-foreground ml-2 hidden md:inline">
{activeChannel.description}
</span>
)}
<span className="ml-auto text-[10px] text-muted-foreground tabular-nums">
<span className="ml-auto text-xs text-muted-foreground tabular-nums">
{messages.length} msg
</span>
</>
) : (
<span className="text-muted-foreground text-[12px]">
select a channel
</span>
<span className="text-muted-foreground text-xs">select a channel</span>
)}
</div>
{/* Messages */}
<div ref={scrollRef} className="flex-1 overflow-y-auto">
{messages.length === 0 && activeChannelId && (
<div className="flex items-center justify-center h-full text-muted-foreground text-[12px]">
<div className="flex items-center justify-center h-full text-muted-foreground text-xs">
no messages yet
</div>
)}
@@ -138,15 +126,12 @@ export default function App() {
<MessageItem
key={msg.id}
message={msg}
replyTarget={
msg.reply_to ? messagesById.get(msg.reply_to) : undefined
}
replyTarget={msg.reply_to ? messagesById.get(msg.reply_to) : undefined}
onReply={setReplyTo}
/>
))}
</div>
{/* Compose — key forces reset on channel switch */}
{activeChannelId && (
<ComposeBox
key={activeChannelId}