Skip to content

Improve frontend UX and error feedback for retina analysis flow #31

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
aditya-30-05 wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Improve frontend UX and error feedback for retina analysis flow #31

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
187 changes: 145 additions & 42 deletions src/app/history/page.tsx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,25 +12,32 @@ interface Record {
riskLevel: string;
}

type FetchStatus = "loading" | "error" | "success";

export default function HistoryPage() {
const [records, setRecords] = useState<Record[]>([]);
const [loading, setLoading] = useState(true);
const [status, setStatus] = useState<FetchStatus>("loading");

useEffect(() => {
async function fetchHistory() {
try {
const apiUrl = process.env.NEXT_PUBLIC_API_URL || "http://localhost:5000";
const response = await fetch(`${apiUrl}/api/history`);
if (response.ok) {
const data = await response.json();
setRecords(data);
}
} catch (error) {
console.error("Failed to fetch history:", error);
} finally {
setLoading(false);
const fetchHistory = async () => {
setStatus("loading");
try {
const apiUrl = process.env.NEXT_PUBLIC_API_URL || "http://localhost:5000";
const response = await fetch(`${apiUrl}/api/history`);
if (response.ok) {
const data = await response.json();
setRecords(data);
setStatus("success");
} else {
console.error("Failed to fetch history: server responded with", response.status);
setStatus("error");
}
} catch (error) {
console.error("Failed to fetch history:", error);
setStatus("error");
}
};

useEffect(() => {
fetchHistory();
}, []);

Expand All @@ -39,69 +46,165 @@ export default function HistoryPage() {
<div className="max-w-6xl mx-auto space-y-10 animate-fade-in-up">
<div className="flex justify-between items-end">
<div className="space-y-2">
<h1 className="text-4xl font-black text-slate-900 tracking-tight">Patient History</h1>
<p className="text-slate-500 font-medium">Review and manage past retina diagnostic reports.</p>
<h1 className="text-4xl font-black text-slate-900 tracking-tight">
Patient History
</h1>
<p className="text-slate-500 font-medium">
Review and manage past retina diagnostic reports.
</p>
</div>
<Link href="/upload" className="clinical-btn !py-2.5 shadow-sm">
New Analysis
</Link>
</div>

<div className="clinical-card overflow-hidden">
{loading ? (
{/* Loading state */}
{status === "loading" && (
<div className="p-20 text-center text-slate-400 font-bold">
Syncing with Clinical Database...
Syncing with Clinical Database...
</div>
)}

{/* Connection error state — separated from empty state */}
{status === "error" && (
<div
role="alert"
aria-live="assertive"
className="p-16 flex flex-col items-center text-center space-y-6"
>
<div className="w-16 h-16 bg-red-50 rounded-2xl flex items-center justify-center border border-red-100">
<svg
className="w-8 h-8 text-red-400"
fill="none"
stroke="currentColor"
viewBox="0 0 24 24"
aria-hidden="true"
>
<path
strokeLinecap="round"
strokeLinejoin="round"
strokeWidth="1.5"
d="M12 9v2m0 4h.01M10.29 3.86L1.82 18a2 2 0 001.71 3h16.94a2 2 0 001.71-3L13.71 3.86a2 2 0 00-3.42 0z"
/>
</svg>
</div>
<div className="space-y-2">
<p className="text-lg font-black text-slate-800 tracking-tight">
Database Connection Failed
</p>
<p className="text-sm font-medium text-slate-500 max-w-sm">
Could not retrieve patient records. This is a temporary server
issue — your data has not been lost. Please retry in a moment.
</p>
</div>
<button
onClick={fetchHistory}
className="clinical-btn !py-2.5 !px-8 flex items-center gap-2 shadow-sm"
aria-label="Retry fetching patient history"
>
<svg
className="w-4 h-4"
fill="none"
stroke="currentColor"
viewBox="0 0 24 24"
aria-hidden="true"
>
<path
strokeLinecap="round"
strokeLinejoin="round"
strokeWidth="2.5"
d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"
/>
</svg>
Retry Connection
</button>
</div>
) : records.length === 0 ? (
)}

{/* Truly empty state — only shown when the server confirmed 0 records */}
{status === "success" && records.length === 0 && (
<div className="p-20 text-center space-y-6">
<p className="text-slate-400 font-medium text-lg">No records found in the database.</p>
<Link href="/upload" className="clinical-link">Perform your first scan →</Link>
<p className="text-slate-400 font-medium text-lg">
No records found in the database.
</p>
<Link href="/upload" className="clinical-link">
Perform your first scan →
</Link>
</div>
) : (
)}

{/* Records table — unchanged */}
{status === "success" && records.length > 0 && (
<div className="overflow-x-auto">
<table className="w-full text-left border-collapse">
<thead>
<tr className="bg-slate-50 border-b border-slate-100">
<th className="px-8 py-5 text-[10px] font-black uppercase tracking-widest text-slate-400">Date & Time</th>
<th className="px-8 py-5 text-[10px] font-black uppercase tracking-widest text-slate-400">File Reference</th>
<th className="px-8 py-5 text-[10px] font-black uppercase tracking-widest text-slate-400">Diagnosis</th>
<th className="px-8 py-5 text-[10px] font-black uppercase tracking-widest text-slate-400">Confidence</th>
<th className="px-8 py-5 text-[10px] font-black uppercase tracking-widest text-slate-400 text-right">Action</th>
<th className="px-8 py-5 text-[10px] font-black uppercase tracking-widest text-slate-400">
Date &amp; Time
</th>
<th className="px-8 py-5 text-[10px] font-black uppercase tracking-widest text-slate-400">
File Reference
</th>
<th className="px-8 py-5 text-[10px] font-black uppercase tracking-widest text-slate-400">
Diagnosis
</th>
<th className="px-8 py-5 text-[10px] font-black uppercase tracking-widest text-slate-400">
Confidence
</th>
<th className="px-8 py-5 text-[10px] font-black uppercase tracking-widest text-slate-400 text-right">
Action
</th>
</tr>
</thead>
<tbody className="divide-y divide-slate-50 bg-white">
{records.map((record) => (
<tr key={record._id} className="hover:bg-slate-50/50 transition-colors group">
<tr
key={record._id}
className="hover:bg-slate-50/50 transition-colors group"
>
<td className="px-8 py-6 text-sm font-bold text-slate-500">
{new Date(record.createdAt).toLocaleString()}
</td>
<td className="px-8 py-6 text-sm font-black text-slate-800">
{record.filename}
</td>
<td className="px-8 py-6">
<span className={`inline-flex items-center px-3 py-1 rounded-full text-[10px] font-black uppercase tracking-widest ${
record.diagnosis === 'Healthy'
? 'bg-accent-primary/10 text-accent-primary'
: 'bg-accent-warning/10 text-accent-warning'
}`}>
<span
className={`inline-flex items-center px-3 py-1 rounded-full text-[10px] font-black uppercase tracking-widest ${
record.diagnosis === "Healthy"
? "bg-accent-primary/10 text-accent-primary"
: "bg-accent-warning/10 text-accent-warning"
}`}
>
{record.diagnosis}
</span>
</td>
<td className="px-8 py-6">
<div className="flex items-center gap-3">
<div className="flex-1 w-20 bg-slate-100 h-1.5 rounded-full overflow-hidden">
<div
className="h-full bg-accent-primary"
style={{ width: `${record.confidence}%` }}
></div>
</div>
<span className="text-xs font-black text-slate-400">{record.confidence}%</span>
<div className="flex-1 w-20 bg-slate-100 h-1.5 rounded-full overflow-hidden">
<div
className="h-full bg-accent-primary"
style={{ width: `${record.confidence}%` }}
role="progressbar"
aria-valuenow={record.confidence}
aria-valuemin={0}
aria-valuemax={100}
aria-label={`Confidence: ${record.confidence}%`}
></div>
</div>
<span className="text-xs font-black text-slate-400">
{record.confidence}%
</span>
</div>
</td>
<td className="px-8 py-6 text-right">
<button
<button
onClick={() => {
sessionStorage.setItem("lastAnalysis", JSON.stringify(record));
sessionStorage.setItem(
"lastAnalysis",
JSON.stringify(record)
);
window.location.href = "/result";
}}
className="text-[10px] font-black uppercase text-accent-primary hover:text-accent-hover focus:opacity-100 focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-primary/40 focus-visible:ring-offset-2 tracking-widest opacity-100 md:opacity-0 md:group-hover:opacity-100 transition-all"
Expand Down
Loading