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feat(parallel-backupfile-added)-v3

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This commit is contained in:
Potenz
2025-10-05 04:29:18 +05:30
parent b8c0e65045
commit 8a8a2a52b6
2 changed files with 368 additions and 16 deletions
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73
apps/Frontend/src/pages/database-management-page.tsx
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@@ -26,10 +26,9 @@ export default function DatabaseManagementPage() {
},
});
// helper: safely extract filename from fetch Response headers
function getFileNameFromResponse(res: Response): string {
// Helper: parse Content-Disposition filename if present
function filenameFromDisposition(res: Response): string | null {
const disposition = res.headers.get("Content-Disposition") || "";
// filename*=UTF-8''encoded%20name.zip
const starMatch = disposition.match(/filename\*\s*=\s*([^;]+)/i);
if (starMatch && starMatch[1]) {
let val = starMatch[1]
@@ -42,23 +41,37 @@ export default function DatabaseManagementPage() {
return val;
}
}
// filename="name" OR filename=name
const fileNameRegex = /filename\s*=\s*"([^"]+)"|filename\s*=\s*([^;]+)/i;
const normalMatch = disposition.match(fileNameRegex);
if (normalMatch) {
// normalMatch[1] corresponds to the quoted capture, normalMatch[2] to unquoted
const candidate = (normalMatch[1] ?? normalMatch[2] ?? "").trim();
if (candidate) return candidate.replace(/['"]/g, "");
}
return null;
}
// fallback by content-type
const ct = (res.headers.get("Content-Type") || "").toLowerCase();
const iso = new Date().toISOString().replace(/[:.]/g, "-");
if (ct.includes("zip")) return `dental_backup_${iso}.zip`;
if (ct.includes("gzip") || ct.includes("x-gzip"))
return `dental_backup_${iso}.tar.gz`;
return `dental_backup_${iso}.dump`;
// Detect file type by reading first bytes (magic numbers)
// Returns 'zip' | 'gzip' | 'unknown'
async function detectBlobType(b: Blob): Promise<"zip" | "gzip" | "unknown"> {
try {
const header = await b.slice(0, 8).arrayBuffer();
const bytes = new Uint8Array(header);
// ZIP: 50 4B 03 04
if (
bytes[0] === 0x50 &&
bytes[1] === 0x4b &&
(bytes[2] === 0x03 || bytes[2] === 0x05 || bytes[2] === 0x07)
) {
return "zip";
}
// GZIP: 1F 8B
if (bytes[0] === 0x1f && bytes[1] === 0x8b) {
return "gzip";
}
return "unknown";
} catch (e) {
return "unknown";
}
}
// ----- Backup mutation -----
@@ -75,11 +88,39 @@ export default function DatabaseManagementPage() {
throw new Error((errorBody as any)?.error || "Backup failed");
}
// get filename from Content-Disposition or fallback
const fileName = getFileNameFromResponse(res);
// Convert response to blob (file)
const blob = await res.blob();
// 1) prefer Content-Disposition filename if available
let fileName = filenameFromDisposition(res);
// 2) try to guess from Content-Type if disposition not given
if (!fileName) {
const ct = (res.headers.get("Content-Type") || "").toLowerCase();
const iso = new Date().toISOString().replace(/[:.]/g, "-");
if (ct.includes("zip")) fileName = `dental_backup_${iso}.zip`;
else if (
ct.includes("gzip") ||
ct.includes("x-gzip") ||
ct.includes("tar")
)
fileName = `dental_backup_${iso}.tar.gz`;
else fileName = `dental_backup_${iso}.dump`;
}
// 3) sanity-check blob contents and correct extension if needed
const detected = await detectBlobType(blob);
if (detected === "zip" && !fileName.toLowerCase().endsWith(".zip")) {
// replace extension with .zip
fileName = fileName.replace(/(\.tar\.gz|\.tgz|\.gz|\.dump)?$/i, ".zip");
} else if (
detected === "gzip" &&
!/(\.tar\.gz|\.tgz|\.gz)$/i.test(fileName)
) {
// prefer .tar.gz for gzipped tar
fileName = fileName.replace(/(\.zip|\.dump)?$/i, ".tar.gz");
}
const url = window.URL.createObjectURL(blob);
const a = document.createElement("a");
a.href = url;