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import { v4 as uuidv4 } from "uuid"
import puppeteer from "puppeteer"
import { downloadFileToTmp } from "../utils/downloadFileToTmp.mts"
import { moveFileFromTmpToPending } from "../utils/moveFileFromTmpToPending.mts"
export const state = {
load: 0,
}
const instances: string[] = [
process.env.VC_AUDIO_GENERATION_SPACE_API_URL
]
// TODO we should use an inference endpoint instead
export async function generateAudio(prompt: string, audioFileName: string) {
if (state.load === instances.length) {
throw new Error(`all audio generation servers are busy, try again later..`)
}
state.load += 1
try {
const instance = instances.shift()
instances.push(instance)
const browser = await puppeteer.launch({
headless: true,
protocolTimeout: 120000,
})
try {
const page = await browser.newPage()
await page.goto(instance, {
waitUntil: "networkidle2",
})
await new Promise(r => setTimeout(r, 3000))
const firstTextboxInput = await page.$('input[data-testid="textbox"]')
await firstTextboxInput.type(prompt)
// console.log("looking for the button to submit")
const submitButton = await page.$("button.lg")
// console.log("clicking on the button")
await submitButton.click()
await page.waitForSelector("a[download]", {
timeout: 120000, // no need to wait for too long, generation is quick
})
const audioRemoteUrl = await page.$$eval("a[download]", el => el.map(x => x.getAttribute("href"))[0])
// it is always a good idea to download to a tmp dir before saving to the pending dir
// because there is always a risk that the download will fail
const tmpFileName = `${uuidv4()}.mp4`
await downloadFileToTmp(audioRemoteUrl, tmpFileName)
await moveFileFromTmpToPending(tmpFileName, audioFileName)
} catch (err) {
throw err
} finally {
await browser.close()
}
} catch (err) {
throw err
} finally {
state.load -= 1
}
} |