hedgedoc/lib/web/note/actions.ts

import {Response} from "express";

const models = require('../../models')
const logger = require('../../logger')
const config = require('../../config')
const errors = require('../../errors')
const shortId = require('shortid')
const moment = require('moment')
const querystring = require('querystring')

export module ActionController {

  // TODO: Use correct type for note
  export function getInfo(req: any, res: Response, note: any) {
    const body = note.content
    const extracted = models.Note.extractMeta(body)
    const markdown = extracted.markdown
    const meta = models.Note.parseMeta(extracted.meta)
    const createtime = note.createdAt
    const updatetime = note.lastchangeAt
    const title = models.Note.decodeTitle(note.title)
    const data = {
      title: meta.title || title,
      description: meta.description || (markdown ? models.Note.generateDescription(markdown) : null),
      viewcount: note.viewcount,
      createtime: createtime,
      updatetime: updatetime
    }
    res.set({
      'Access-Control-Allow-Origin': '*', // allow CORS as API
      'Access-Control-Allow-Headers': 'Range',
      'Access-Control-Expose-Headers': 'Cache-Control, Content-Encoding, Content-Range',
      'Cache-Control': 'private', // only cache by client
      'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
    })
    res.send(data)
  }

  // TODO: Use correct type for note
  export function createGist(req: any, res: Response, note: any) {
    const data = {
      client_id: config.github.clientID,
      redirect_uri: config.serverURL + '/auth/github/callback/' + models.Note.encodeNoteId(note.id) + '/gist',
      scope: 'gist',
      state: shortId.generate()
    }
    const query = querystring.stringify(data)
    res.redirect('https://github.com/login/oauth/authorize?' + query)
  }

  // TODO: Use correct type for note
  export function getRevision(req: any, res: Response, note: any) {
    const actionId = req.params.actionId
    if (actionId) {
      const time = moment(parseInt(actionId))
      if (time.isValid()) {
        models.Revision.getPatchedNoteRevisionByTime(note, time, function (err, content) {
          if (err) {
            logger.error(err)
            return errors.errorInternalError(res)
          }
          if (!content) {
            return errors.errorNotFound(res)
          }
          res.set({
            'Access-Control-Allow-Origin': '*', // allow CORS as API
            'Access-Control-Allow-Headers': 'Range',
            'Access-Control-Expose-Headers': 'Cache-Control, Content-Encoding, Content-Range',
            'Cache-Control': 'private', // only cache by client
            'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
          })
          res.send(content)
        })
      } else {
        return errors.errorNotFound(res)
      }
    } else {
      models.Revision.getNoteRevisions(note, function (err, data) {
        if (err) {
          logger.error(err)
          return errors.errorInternalError(res)
        }
        const out = {
          revision: data
        }
        res.set({
          'Access-Control-Allow-Origin': '*', // allow CORS as API
          'Access-Control-Allow-Headers': 'Range',
          'Access-Control-Expose-Headers': 'Cache-Control, Content-Encoding, Content-Range',
          'Cache-Control': 'private', // only cache by client
          'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
        })
        res.send(out)
      })
    }
  }
}