const { copyFileSync, mkdirSync, readFileSync, writeFileSync } = require('node:fs')
const { createHash } = require('node:crypto')
const { basename, resolve } = require('node:path')

const repoRoot = resolve(__dirname, '..')
const mobileRoot = resolve(repoRoot, 'mobile-app')
const variant = process.argv.includes('--oem') ? 'oem' : 'standard'
const packageJson = JSON.parse(readFileSync(resolve(mobileRoot, 'package.json'), 'utf8'))
const displayVersion = packageJson.version.replace(/^(\d+\.\d+\.\d+)-(\d+)$/, '$1.$2')
const gradle = readFileSync(resolve(mobileRoot, 'android-capacitor', 'app', 'build.gradle'), 'utf8')
const versionCode = Number(gradle.match(/\bversionCode\s+(\d+)/)?.[1] || 0)

if (!versionCode) throw new Error('Unable to read Android versionCode from app/build.gradle')

const sourceName = `Mini7-One-Pad-${displayVersion}-${variant}-debug.apk`
const sourceApk = resolve(mobileRoot, 'dist', sourceName)
const publicName = `Mini7-One-Pad-${displayVersion}-${variant}.apk`
const outputDir = resolve(mobileRoot, 'dist', 'update', variant)
const outputApk = resolve(outputDir, publicName)

mkdirSync(outputDir, { recursive: true })
copyFileSync(sourceApk, outputApk)
const sha256 = createHash('sha256').update(readFileSync(outputApk)).digest('hex')
const manifest = {
  version: displayVersion,
  versionCode,
  url: publicName,
  sha256,
  notes: process.env.MINI7_UPDATE_NOTES || '',
  mandatory: process.env.MINI7_UPDATE_MANDATORY === 'true'
}

writeFileSync(resolve(outputDir, 'latest.json'), `${JSON.stringify(manifest, null, 2)}\n`)
writeFileSync(resolve(outputDir, `${basename(outputApk)}.sha256`), `${sha256}  ${publicName}\n`)

console.log(`[Pad Update] Upload everything in: ${outputDir}`)
console.log(`[Pad Update] Version: ${displayVersion} (${versionCode}), variant: ${variant}`)