21 lines
1003 B
TypeScript
21 lines
1003 B
TypeScript
// Shared blob download: fetches an endpoint and saves the response as a file.
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// Works whether or not the response sets Content-Disposition (some exports
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// don't), falling back to the given name. Throws on a non-OK response so callers
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// can surface the failure with a toast.
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export async function downloadFile(endpoint: string, fallbackName: string): Promise<void> {
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const res = await fetch(endpoint, { credentials: 'include' });
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if (!res.ok) {
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let data: { message?: string; error?: string } = {};
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try { data = await res.json(); } catch { /* ignore */ }
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throw new Error(data.message || data.error || `HTTP ${res.status}`);
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}
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const disposition = res.headers.get('Content-Disposition');
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const match = disposition?.match(/filename="?([^"]+)"?/i);
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const name = match?.[1] || fallbackName;
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const blob = await res.blob();
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const url = URL.createObjectURL(blob);
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const a = document.createElement('a');
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a.href = url; a.download = name; a.click();
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URL.revokeObjectURL(url);
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}
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