45 lines
1.4 KiB
JavaScript
45 lines
1.4 KiB
JavaScript
import fs from 'node:fs/promises'
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import path from 'node:path'
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import { randomUUID } from 'node:crypto'
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export function createPrintJournal(baseDir) {
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const filePath = path.join(baseDir, 'pending-print-result.json')
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return {
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async load() {
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try {
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const entry = JSON.parse(await fs.readFile(filePath, 'utf8'))
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if (!entry || !Number.isInteger(entry.jobId) || !entry.claimToken ||
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!['claimed', 'dispatching', 'completed_pending_ack', 'unknown_pending_ack', 'failed_pending_ack'].includes(entry.phase)) {
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throw new Error('本地打印恢复记录损坏，请先核实上一任务的出纸情况')
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}
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return entry
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} catch (error) {
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if (error?.code === 'ENOENT') return null
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throw error
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}
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},
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async save(entry) {
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await fs.mkdir(baseDir, { recursive: true })
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const temporaryPath = `${filePath}.${randomUUID()}.tmp`
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const file = await fs.open(temporaryPath, 'wx')
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try {
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await file.writeFile(JSON.stringify(entry))
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await file.sync()
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} finally {
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await file.close()
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}
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try {
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await fs.rename(temporaryPath, filePath)
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} catch (error) {
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await fs.unlink(temporaryPath).catch(() => {})
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throw error
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}
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},
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async clear() {
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await fs.unlink(filePath).catch((error) => {
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if (error?.code !== 'ENOENT') throw error
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})
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}
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}
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}
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