Revert "fix: firefox backup download issues (#4679)" (#4683)

This reverts commit c74460fffa.

apps/frontend/src/composables/servers/modules/backups.ts

@@ -106,87 +106,4 @@ export class BackupsModule extends ServerModule {
 	async getAutoBackup(): Promise<AutoBackupSettings> {
 		return await useServersFetch(`servers/${this.serverId}/autobackup`)
 	}
-
-	downloadBackup(
-		backupId: string,
-		backupName: string,
-	): {
-		promise: Promise<void>
-		onProgress: (cb: (p: { loaded: number; total: number; progress: number }) => void) => void
-		cancel: () => void
-	} {
-		const progressSubject = new EventTarget()
-		const abortController = new AbortController()
-
-		const downloadPromise = new Promise<void>((resolve, reject) => {
-			const auth = this.server.general?.node
-			if (!auth?.instance || !auth?.token) {
-				reject(new Error('Missing authentication credentials'))
-				return
-			}
-
-			const xhr = new XMLHttpRequest()
-
-			xhr.addEventListener('progress', (e) => {
-				if (e.lengthComputable) {
-					const progress = e.loaded / e.total
-					progressSubject.dispatchEvent(
-						new CustomEvent('progress', {
-							detail: { loaded: e.loaded, total: e.total, progress },
-						}),
-					)
-				} else {
-					// progress = -1 to indicate indeterminate size
-					progressSubject.dispatchEvent(
-						new CustomEvent('progress', {
-							detail: { loaded: e.loaded, total: 0, progress: -1 },
-						}),
-					)
-				}
-			})
-
-			xhr.onload = () => {
-				if (xhr.status >= 200 && xhr.status < 300) {
-					try {
-						const blob = xhr.response
-						const url = window.URL.createObjectURL(blob)
-						const a = document.createElement('a')
-						a.href = url
-						a.download = `${backupName}.zip`
-						document.body.appendChild(a)
-						a.click()
-						document.body.removeChild(a)
-						window.URL.revokeObjectURL(url)
-						resolve()
-					} catch (error) {
-						reject(error)
-					}
-				} else {
-					reject(new Error(`Download failed with status ${xhr.status}`))
-				}
-			}
-
-			xhr.onerror = () => reject(new Error('Download failed'))
-			xhr.onabort = () => reject(new Error('Download cancelled'))
-
-			xhr.open(
-				'GET',
-				`https://${auth.instance}/modrinth/v0/backups/${backupId}/download?auth=${auth.token}`,
-			)
-			xhr.responseType = 'blob'
-			xhr.send()
-
-			abortController.signal.addEventListener('abort', () => xhr.abort())
-		})
-
-		return {
-			promise: downloadPromise,
-			onProgress: (cb: (p: { loaded: number; total: number; progress: number }) => void) => {
-				progressSubject.addEventListener('progress', ((e: CustomEvent) => {
-					cb(e.detail)
-				}) as EventListener)
-			},
-			cancel: () => abortController.abort(),
-		}
-	}
 }