Files
aklive2d/packages/downloader/index.ts
2025-05-02 02:27:42 +08:00

128 lines
4.5 KiB
TypeScript

import path from 'node:path'
import fs from 'node:fs'
import { Buffer } from 'node:buffer'
import { pipeline } from 'node:stream/promises'
import pThrottle from 'p-throttle'
import { file as fileLib } from '@aklive2d/libs'
export type UnzipDownloadItem = {
name: string
url: string
}
export const githubDownload = async (
history_url: string,
raw_url: string,
filepath: string
) => {
const historyResponse = await fetch(history_url)
const historyData = await historyResponse.json()
const lastCommit = historyData[0]
const lastCommitDate = new Date(lastCommit.commit.committer.date)
const ext = path.extname(filepath)
const basename = path.basename(filepath).replace(ext, '')
filepath = path.join(
path.dirname(filepath),
`${basename}_${lastCommitDate.getTime()}${ext}`
)
const dirpath = path.dirname(filepath)
console.log(`Last ${basename} commit date: ${lastCommitDate.getTime()}`)
if (fileLib.exists(filepath)) {
console.log(`${basename} is the latest version.`)
const content = fileLib.readSync(filepath)
return content ? JSON.parse(content) : null
}
const response = await fetch(raw_url)
const data = await response.json()
fileLib.writeSync(JSON.stringify(data), filepath)
console.log(`${basename} is updated.`)
// remove old file
const files = fileLib.readdirSync(path.join(dirpath))
for (const file of files) {
if (file.startsWith(basename) && file !== path.basename(filepath)) {
fileLib.rm(path.join(dirpath, file))
}
}
return data
}
export const unzipDownload = async (
filesToDownload: UnzipDownloadItem[],
targetDir: string,
opts: {
defaultRegex: RegExp | null
matchRegExps: RegExp[]
} = {
defaultRegex: null,
matchRegExps: [],
}
) => {
let retry = filesToDownload
const throttle = pThrottle({
limit: 3,
interval: 1000,
})
while (retry.length > 0) {
const newRetry: UnzipDownloadItem[] = []
await Promise.all(
retry.map(
throttle(async (item) => {
const name = item.name
console.log(`Downloading ${name}`)
const zip = await fetch(item.url)
.then((resp) => {
const status = resp.status
if (status !== 200)
throw new Error(`Status Code: ${status}`)
return resp.arrayBuffer()
})
.then((arrayBuffer) => {
return fileLib.unzip.fromBuffer(
Buffer.from(arrayBuffer)
)
})
.catch((err) => {
console.error(err)
return null
})
if (!zip) return
try {
for await (const entry of zip) {
if (
opts.defaultRegex &&
!opts.defaultRegex.test(entry.filename)
) {
continue
}
if (opts.matchRegExps.length > 0) {
let shallContinue = false
for (const regex of opts.matchRegExps) {
if (!regex.test(entry.filename)) {
shallContinue = true
break
}
}
if (shallContinue) continue
}
const filePath = path.join(
targetDir,
entry.filename
)
fileLib.mkdir(path.dirname(filePath))
const readStream = await entry.openReadStream()
const writeStream = fs.createWriteStream(filePath)
await pipeline(readStream, writeStream)
console.log(`Finish Writing to ${entry.filename}`)
}
} finally {
await zip.close()
}
})
)
)
retry = newRetry
}
}