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path: root/server/api/groups.js
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/* global __appdir */
var path = require('path')
var db = require(path.join(__appdir, 'lib', 'sequelize'))

function includeAllChilds (group, groupIdChain = []) {
  const newIdChain = [...groupIdChain, group.id]
  return new Promise((resolve, reject) => {
    group.getSubgroups({ include: ['subgroups', 'clients'] }).then(subgroups => {
      const subgroupPromises = []
      subgroups.forEach(subgroup => {
        if (!groupIdChain.includes(subgroup.id)) {
          subgroupPromises.push(includeAllChilds(subgroup, newIdChain))
        }
      })
      Promise.all(subgroupPromises).then(result => {
        result.forEach(resolvedSubgroup => {
          resolvedSubgroup.subgroups.forEach(x => { if (!group.subgroups.includes(x)) group.subgroups.push(x) })
          resolvedSubgroup.clients.forEach(x => { if (!group.clients.includes(x)) group.clients.push(x) })
        })
        resolve(group)
      })
    })
  })
}

// GET Requests
module.exports.get = {
  // get a list containing id and name of all groups
  getList: function (req, res) {
    db.group.findAll({ attributes: ['id', 'name', 'description'], order: [['name', 'ASC']] }).then(list => {
      res.send(list)
    })
  },

  // get name, description, parents, subgroups and clients of a group (by id)
  getGroup: function (req, res) {
    const all = req.query.all === 'true'
    if (req.query.id > 0) {
      db.group.findOne({ where: { id: req.query.id }, include: ['parents', 'subgroups', 'clients'] }).then(group => {
        if (group) {
          if (all) includeAllChilds(group).then(x => res.send(x))
          else res.send(group)
        } else {
          res.status(404).end()
        }
      })
    } else {
      Promise.all([db.group.findAll(all ? {} : { where: { '$parents.id$': null }, include: ['parents'] }),
        db.client.findAll(all ? {} : { where: { '$groups.id$': null }, include: ['groups'] })]).then(result => {
        res.send({ id: 0, subgroups: result[0], clients: result[1] })
      })
    }
  }
}

// POST Requests
module.exports.post = {
  // create group or update information of a group (returns id)
  save: function (req, res) {
    if (req.body.id > 0) {
      db.group.findOne({ where: { id: req.body.id } }).then(group => {
        if (group) {
          var promises = []
          if (req.body.info) promises.push(group.update(req.body.info))
          if (req.body.parentIds) promises.push(group.setParents(req.body.parentIds))
          Promise.all(promises).then(() => { res.send({ id: req.body.id }) })
        } else { res.status(404).end() }
      })
    } else {
      db.group.create(req.body.info).then(group => {
        if (req.body.parentIds) group.setParents(req.body.parentIds).then(() => { res.send({ id: group.id }) })
      })
    }
  },

  // delete groups
  delete: function (req, res) {
    db.group.destroy({ where: { id: req.body.ids } }).then(count => { res.send({ count }) })
  },

  // remove subgroups from a group
  removeSubgroups: function (req, res) {
    db.group.findOne({ where: { id: req.body.id } }).then(group => {
      if (group) {
        group.removeSubgroups(req.body.ids).then(() => { res.end() })
      } else { res.status(404).end() }
    })
  },

  // remove clients from a group
  removeClients: function (req, res) {
    db.group.findOne({ where: { id: req.body.id } }).then(group => {
      if (group) {
        group.removeClients(req.body.ids).then(() => { res.end() })
      } else { res.status(404).end() }
    })
  },

  // add subgroups to a group
  addSubgroups: function (req, res) {
    db.group.findOne({ where: { id: req.body.id } }).then(group => {
      if (group) {
        group.addSubgroups(req.body.ids).then(() => { res.end() })
      } else { res.status(404).end() }
    })
  },

  // add clients to a group
  addClients: function (req, res) {
    db.group.findOne({ where: { id: req.body.id } }).then(group => {
      if (group) {
        group.addClients(req.body.ids).then(() => { res.end() })
      } else { res.status(404).end() }
    })
  }
}