feeles-ide/versioning-webpack-plugin.js

The hackable and serializable IDE to make learning material

'use strict'

const { promisify } = require('es6-promisify')
const fs = require('fs')

const stat = promisify(fs.stat)
const readdir = promisify(fs.readdir)
const readFile = promisify(fs.readFile)
const version = require('./version')

// build がおわったあと Blob Storage にアップロードしてバージョンをインクリメント
module.exports = class VersioningWebpackPlugin {
  apply(compiler) {
    const azure = require('azure-storage')
    const blobSrv = azure.createBlobService()
    this.createBlockBlob = promisify(
      blobSrv.createBlockBlobFromLocalFile,
      blobSrv
    )

    compiler.plugin('done', this.handleDone.bind(this))
  }

  async handleDone(stats) {
    // path 以下の階層をすべて BlobStorage にアップロード
    this.outputPath = stats.compilation.options.output.path
    try {
      await this.uploadDir(this.outputPath)
      await version.advance() // version をインクリメント
      console.log(`🌤 Nice deploying! ${await version.currentUrl()}`)
      version.quit() // Quit RedisClient
    } catch (e) {
      console.log(e)
    }
  }

  async uploadDir(dirPath) {
    const path = require('path')
    const files = await readdir(dirPath)
    for (const name of files) {
      const fullPath = path.join(dirPath, name)
      const stats = await stat(fullPath)
      if (stats.isDirectory()) {
        // 再帰的にアップロード
        await this.uploadDir(fullPath)
      }
      if (stats.isFile()) {
        await this.upload(fullPath)
      }
    }
  }

  async upload(filePath) {
    const path = require('path')
    // uploadPath === {version.next-version}/{relative-path}
    const relativePath = path.relative(this.outputPath, filePath)
    const uploadPath = path.join(await version.nextVersion(), relativePath)
    await this.createBlockBlob('public', uploadPath, filePath)
  }
}