feat: add BIDV vs TCB comparison mode

Toggle fetches both banks simultaneously, merges by date+currency,
and displays side-by-side in a unified table. Bank selector disabled
in compare mode. Export handles comparison data format.
This commit is contained in:
tiennm99 committed 2026-04-03 23:24:56 +07:00
1 parent b2a7070d54
commit 7c00e8b948
1 file changed
+105 -26
+105 -26
View File
@@ -44,6 +44,48 @@ function EmptyState() {
);
}
function ComparisonTable({ results }) {
const headers = ["Date", "Currency", "BIDV Buy TM", "BIDV Sell", "TCB Bid TM", "TCB Ask"];
return (
<div className="overflow-x-auto rounded-lg" style={{ border: "1px solid var(--card-border)" }}>
<table className="min-w-full text-sm">
<thead>
<tr style={{ background: "var(--table-header-bg)" }}>
{headers.map((h) => (
<th
key={h}
className="px-3 py-2.5 text-left font-semibold whitespace-nowrap"
style={{ borderBottom: "1px solid var(--card-border)" }}
>
{h}
</th>
))}
</tr>
</thead>
<tbody>
{results.map((row, idx) => (
<tr
key={idx}
className={`transition-colors hover:!bg-[var(--table-row-hover)] ${idx % 2 !== 0 ? "bg-[var(--table-row-stripe)]" : ""}`}
>
{[row.date, row.currency, row.bidvBuyTm, row.bidvSell, row.tcbBidTm, row.tcbAsk].map((cell, i) => (
<td
key={i}
className="px-3 py-2 whitespace-nowrap"
style={{ borderBottom: "1px solid var(--card-border)" }}
>
{cell || "-"}
</td>
))}
</tr>
))}
</tbody>
</table>
</div>
);
}
function RateTable({ results, selectedBank }) {
const bidvHeaders = ["Date", "Name (VI)", "Buy TM", "Buy CK", "Currency", "Name (EN)", "Sell"];
const tcbHeaders = ["Date", "Label", "Ask Rate", "Bid CK", "Bid TM", "Source", "Target", "Ask TM"];
@@ -141,6 +183,7 @@ export default function ExchangeRateViewer() {
const saved = loadSavedSettings();
return saved?.currency || "USD";
});
const [compareMode, setCompareMode] = useState(false);
const [isLoading, setIsLoading] = useState(false);
const [error, setError] = useState("");
const [results, setResults] = useState([]);
@@ -152,6 +195,24 @@ export default function ExchangeRateViewer() {
saveSettings(selectedBank, selectedCurrency, startDate, endDate);
}, [selectedBank, selectedCurrency, startDate, endDate]);
const fetchBank = async (bank) => {
const response = await fetch("/api/exchange-rates", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
startDate: format(startDate, "yyyy-MM-dd"),
endDate: format(endDate, "yyyy-MM-dd"),
bank,
currency: selectedCurrency,
}),
});
if (!response.ok) {
const errorData = await response.json();
throw new Error(errorData.error || `Failed to fetch ${bank} rates`);
}
return response.json();
};
const handleFetch = useCallback(async () => {
if (!startDate || !endDate) {
setError("Please select both start and end dates");
@@ -167,27 +228,26 @@ export default function ExchangeRateViewer() {
setHasFetched(false);
setProgress(null);
try {
const response = await fetch("/api/exchange-rates", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
startDate: format(startDate, "yyyy-MM-dd"),
endDate: format(endDate, "yyyy-MM-dd"),
bank: selectedBank,
currency: selectedCurrency,
}),
});
if (!response.ok) {
const errorData = await response.json();
throw new Error(errorData.error || "Failed to fetch exchange rates");
if (compareMode) {
const [bidvData, tcbData] = await Promise.all([fetchBank("bidv"), fetchBank("tcb")]);
// Merge by date + currency
const merged = new Map();
for (const row of (bidvData.data || [])) {
const key = `${row.date}|${row.currency}`;
merged.set(key, { date: row.date, currency: row.currency, bidvBuyTm: row.muaTm, bidvSell: row.ban });
}
for (const row of (tcbData.data || [])) {
const key = `${row.date}|${row.sourceCurrency}`;
const existing = merged.get(key) || { date: row.date, currency: row.sourceCurrency };
existing.tcbBidTm = row.bidRateTM;
existing.tcbAsk = row.askRate;
merged.set(key, existing);
}
setResults(Array.from(merged.values()).sort((a, b) => a.date.localeCompare(b.date)));
} else {
const data = await fetchBank(selectedBank);
setResults(data.data || []);
}
// Stream progress from response
const data = await response.json();
if (data.total) {
setProgress({ current: data.total, total: data.total });
}
setResults(data.data || []);
setHasFetched(true);
} catch (err) {
setError(`An error occurred while fetching exchange rates: ${err.message}`);
@@ -196,7 +256,7 @@ export default function ExchangeRateViewer() {
setIsLoading(false);
setProgress(null);
}
}, [startDate, endDate, selectedBank, selectedCurrency]);
}, [startDate, endDate, selectedBank, selectedCurrency, compareMode]);
// Auto-fetch on initial load
useEffect(() => {
@@ -204,6 +264,11 @@ export default function ExchangeRateViewer() {
}, []); // eslint-disable-line react-hooks/exhaustive-deps
const getExportRows = () => {
if (compareMode) {
const headers = ["Date", "Currency", "BIDV Buy TM", "BIDV Sell", "TCB Bid TM", "TCB Ask"];
const rows = results.map((row) => [row.date, row.currency, row.bidvBuyTm || "", row.bidvSell || "", row.tcbBidTm || "", row.tcbAsk || ""]);
return [headers, ...rows];
}
if (selectedBank === "bidv") {
const headers = ["Date", "NameVI", "MuaTm", "MuaCk", "Currency", "NameEN", "Ban"];
const rows = results.map((row) => [row.date, row.nameVI, row.muaTm, row.muaCk, row.currency, row.nameEN, row.ban]);
@@ -214,7 +279,7 @@ export default function ExchangeRateViewer() {
return [headers, ...rows];
};
const baseFilename = `exchange_rates_${selectedBank}_${selectedCurrency}_${new Date().toISOString().split("T")[0]}`;
const baseFilename = `exchange_rates_${compareMode ? "compare" : selectedBank}_${selectedCurrency}_${new Date().toISOString().split("T")[0]}`;
const handleExportExcel = () => {
if (results.length === 0) return;
@@ -272,7 +337,8 @@ export default function ExchangeRateViewer() {
id="bank"
value={selectedBank}
onChange={(e) => setSelectedBank(e.target.value)}
className="border rounded-lg px-3 py-2 text-sm w-full transition-colors focus:outline-none focus:ring-2 focus:ring-blue-500/30"
disabled={compareMode}
className="border rounded-lg px-3 py-2 text-sm w-full transition-colors focus:outline-none focus:ring-2 focus:ring-blue-500/30 disabled:opacity-50"
style={inputStyle}
>
<option value="bidv">BIDV</option>
@@ -336,8 +402,18 @@ export default function ExchangeRateViewer() {
</div>
</div>
{/* Date presets */}
<div className="flex flex-wrap gap-2">
{/* Compare toggle + Date presets */}
<div className="flex flex-wrap items-center gap-3">
<label className="flex items-center gap-1.5 text-xs cursor-pointer" style={{ color: "var(--muted)" }}>
<input
type="checkbox"
checked={compareMode}
onChange={(e) => setCompareMode(e.target.checked)}
className="rounded"
/>
Compare BIDV vs TCB
</label>
<span style={{ color: "var(--card-border)" }}>|</span>
{[
{ label: "Today", start: new Date(), end: new Date() },
{ label: "Last 7 days", start: subDays(new Date(), 7), end: new Date() },
@@ -396,7 +472,10 @@ export default function ExchangeRateViewer() {
{results.length} {results.length === 1 ? "record" : "records"} found
</p>
</div>
<RateTable results={results} selectedBank={selectedBank} />
{compareMode
? <ComparisonTable results={results} />
: <RateTable results={results} selectedBank={selectedBank} />
}
</div>
)}
</div>