dort/lib/files.js

File sharing through web with wonderful alternation.

/**
 * 文件集合模块
 */

const Paths = require('./paths.js')
const File = require('./file.js')

class Files {
  constructor (_config, _options) {
    this.config = _config

    this.files = {}
    this.count = 0
    this.projectSocket = _options.projectSocket
    this.lastVersionDate = new Date()
  }

  create (_path, _content) {
    // 初始化地址
    const normalizedPath = Paths.normalize(_path)
    const parsedPath = Paths.parse(normalizedPath)

    // 获取文件
    let file = this.get(normalizedPath)

    if (file) {
      return false
    }

    // 创建文件信息
    file = new File(this.config, {
      name: parsedPath.base,
      directory: parsedPath.dir,
      content: _content,
      projectSocket: this.projectSocket
    })

    // 更新文件集合信息
    this.files[normalizedPath] = file
    this.count++
    this.lastVersionDate = new Date()

    // 通知前端
    this.projectSocket.emit('create_file', file.describe())

    return file
  }

  delete (_path) {
    // 初始化地址
    const normalizedPath = Paths.normalize(_path)

    // 获取文件
    let file = this.get(normalizedPath)

    if (file) {
      file.destructor()
      delete this.files[normalizedPath]
      this.count--

      this.lastVersionDate = new Date()

      // 触发事件
      this.projectSocket.emit('delete_file', file.describe())

      return true
    }

    return false
  }

  createVersion (_path, _content) {
    const normalizedPath = Paths.normalize(_path)

    const file = this.get(normalizedPath, true)

    if (_content) {
      file.createVersion(_content)
    }

    this.lastVersionDate = new Date()

    return file
  }

  get (_path, _force) {
    let force = !!_force

    // 已经存在
    if (this.files[_path]) {
      return this.files[_path]
    }

    // 强制更新
    if (force) {
      let file = this.create(_path)
      return file
    }

    return false
  }

  describe () {
    const ret = {}
    ret.count = this.count
    ret.files = []

    for (const _filePath in this.files) {
      ret.files.push(this.files[_filePath].describe())
    }

    return ret
  }
}

module.exports = Files