metamaps--metamaps/frontend/src/Metamaps/Synapse.js

/* global $ */

import Active from './Active'
import Control from './Control'
import Create from './Create'
import DataModel from './DataModel'
import Engine from './Engine'
import JIT from './JIT'
import Map from './Map'
import Selected from './Selected'
import Settings from './Settings'
import Visualize from './Visualize'

const noOp = () => {}

const Synapse = {
  // this function is to retrieve a synapse JSON object from the database
  // @param id = the id of the synapse to retrieve
  get: function(id, callback = noOp) {
    // if the desired topic is not yet in the local topic repository, fetch it
    if (DataModel.Synapses.get(id) === undefined) {
      $.ajax({
        url: '/synapses/' + id + '.json',
        success: function(data) {
          DataModel.Synapses.add(data)
          callback(DataModel.Synapses.get(id))
        }
      })
    } else callback(DataModel.Synapses.get(id))
  },

  renderSynapse: function(mapping, synapse, node1, node2, createNewInDB, alreadyAdded) {
    var edgeOnViz
    var newedge

    if (!alreadyAdded) {
      newedge = synapse.createEdge(mapping)
      Visualize.mGraph.graph.addAdjacence(node1, node2, newedge.data)
    }
    edgeOnViz = Visualize.mGraph.graph.getAdjacence(node1.id, node2.id)
    if (!alreadyAdded) {
      Engine.addEdge(edgeOnViz)
    }
    synapse.set('edge', edgeOnViz)
    synapse.updateEdge() // links the synapse and the mapping to the edge

    //Control.selectEdge(edgeOnViz)

    var synapseSuccessCallback = function(synapseModel, response) {
      if (Active.Map) {
        mapping.save({ mappable_id: synapseModel.id })
      }
    }

    if (createNewInDB) {
      if (synapse.isNew()) {
        synapse.save(null, {
          success: synapseSuccessCallback
        })
      } else if (!synapse.isNew() && Active.Map) {
        mapping.save(null)
      }
    }
  },
  createSynapseLocally: function(alreadyAdded, topic1id, topic2id) {
    var self = Synapse
    let topic1
    let topic2
    let node1
    let node2
    let synapse
    let mapping
    $(document).trigger(Map.events.editedByActiveMapper)
    // for each node in this array we will create a synapse going to the position2 node.
    var synapsesToCreate = []
    if (alreadyAdded) {
      topic2 = DataModel.Topics.get(topic2id)
      node2 = topic2.get('node')
      topic1 = DataModel.Topics.get(topic1id)
      synapsesToCreate[0] = topic1.get('node')
    }
    else {
      topic2 = DataModel.Topics.get(Create.newSynapse.topic2id)
      node2 = topic2.get('node')
      if (Selected.Nodes.length === 0) {
        topic1 = DataModel.Topics.get(Create.newSynapse.topic1id)
        synapsesToCreate[0] = topic1.get('node')
      } else {
        synapsesToCreate = Selected.Nodes
      }
    }
    synapsesToCreate.forEach(node1 => {
      topic1 = node1.getData('topic')
      synapse = new DataModel.Synapse({
        desc: Create.newSynapse.description || '',
        topic1_id: topic1.isNew() ? topic1.cid : topic1.id,
        topic2_id: topic2.isNew() ? topic2.cid : topic2.id
      })
      DataModel.Synapses.add(synapse)
      mapping = new DataModel.Mapping({
        mappable_type: 'Synapse',
        mappable_id: synapse.cid
      })
      DataModel.Mappings.add(mapping)
      // this function also includes the creation of the synapse in the database
      self.renderSynapse(mapping, synapse, node1, node2, true, alreadyAdded)
    }) // for each in synapsesToCreate
    Create.newSynapse.hide()
  },
  getSynapseFromAutocomplete: function(id) {
    var self = Synapse

    self.get(id, synapse => {
      const mapping = new DataModel.Mapping({
        mappable_type: 'Synapse',
        mappable_id: synapse.id
      })
      DataModel.Mappings.add(mapping)
      const topic1 = DataModel.Topics.get(Create.newSynapse.topic1id)
      const node1 = topic1.get('node')
      const topic2 = DataModel.Topics.get(Create.newSynapse.topic2id)
      const node2 = topic2.get('node')
      Create.newSynapse.hide()
      self.renderSynapse(mapping, synapse, node1, node2, true)
    })
  }
}

export default Synapse