fix: extract shared ssh utilities

server/utils/ssh.ts

@@ -0,0 +1,51 @@
+import { execFile } from "node:child_process"
+import {process} from "std-env";
+import folderMap from "#server/config/backup-folders.json";
+
+export const REMOTE_HOST = process.env.BACKUPS_REMOTE_HOST
+export const REMOTE_ROOT = process.env.BACKUPS_REMOTE_ROOT || "/home/malio-b/backups"
+export const FOLDER_MAP = folderMap as Record<string, string>
+
+
+export const shellQuote = (value: string) => `'${value.replace(/'/g, `'\\''`)}'`
+
+export function runSsh(command: string): Promise<string> {
+    return new Promise((resolve, reject) => {
+        execFile(
+            "ssh",
+            ["-o", "BatchMode=yes", "-o", "ConnectTimeout=5", REMOTE_HOST, command],
+            { maxBuffer: 10 * 1024 * 1024 },
+            (error, stdout, stderr) => {
+                if (error) {
+                    reject(stderr || error.message)
+                    return
+                }
+                resolve(stdout)
+            }
+        )
+    })
+}
+
+async function remoteDirExists(remoteDir: string): Promise<boolean> {
+    const output = await runSsh(`[ -d ${shellQuote(remoteDir)} ] && echo yes || echo no`)
+    return output.trim() === "yes"
+}
+
+export async function resolveFolderRemoteDir(folderName: string): Promise<string | null> {
+    const mapped = FOLDER_MAP[folderName]
+    if (mapped) {
+        return `${REMOTE_ROOT}/${mapped}`
+    }
+
+    const direct = `${REMOTE_ROOT}/${folderName}`
+    if (await remoteDirExists(direct)) {
+        return direct
+    }
+
+    const nested = `${REMOTE_ROOT}/bdd_recette/${folderName}`
+    if (await remoteDirExists(nested)) {
+        return nested
+    }
+
+    return null
+}