const fs = require('fs');

let flowmap = JSON.parse(fs.readFileSync('flowmap.json'));

const nodeCount = 1
const edgeCount = Math.floor(nodeCount * 1.5)

const fileName = `flowmap-${nodeCount}.json`

const nodeString = JSON.stringify(flowmap.nodes[0])
const edgeString = JSON.stringify(flowmap.edges[2])

function createNode(i) {
  let fakeNode = JSON.parse(nodeString)
  fakeNode.name = `tier-${i}`
  fakeNode.idNum = i
  fakeNode.id = `Type:APPLICATION_COMPONENT, id:${i}`
  fakeNode.preferenceValue.uid = fakeNode.id

  fakeNode.preferenceValue.position.x = i * 10
  fakeNode.preferenceValue.position.y = i * 10

  console.log('node', i)
  return fakeNode
}

function createEdge(i) {
  const source = Math.floor(Math.random() * nodeCount)
  const target = Math.floor(Math.random() * nodeCount)

  let fakeEdge = JSON.parse(edgeString)
  fakeEdge.targetNode = `Type:APPLICATION_COMPONENT, id:${target}`
  fakeEdge.targetNodeDefinition.entityId = target

  console.log('edge', i)

  fakeEdge.sourceNode = `Type:APPLICATION_COMPONENT, id:${source}`
  fakeEdge.sourceNodeDefinition.entityId = source

  return fakeEdge
}

function writeNodes() {
  let fakeNodes = []
  fs.appendFileSync(fileName, '[' + JSON.stringify(createNode(0)))
  for (let i = 1; i < nodeCount; i++) {
    fs.appendFileSync(fileName, ',' + JSON.stringify(createNode(i)))
  }
  fs.appendFileSync(fileName, ']')
}

function writeEdges() {
  let fakeEdges = []
  fs.appendFileSync(fileName, '[' + JSON.stringify(createEdge(0)))
  for (let i = 0; i < edgeCount; i++) {
    fs.appendFileSync(fileName, ',' + JSON.stringify(createEdge(i)))
  }
  fs.appendFileSync(fileName, ']')
}

function write(key) {
  if (key === 'nodes') {
    writeNodes()
  } else if (key === 'edges') {
    writeEdges()
  } else {
    fs.appendFileSync(fileName, JSON.stringify(flowmap[key]))
  }
}

fs.writeFileSync(fileName, '{');
let first = true
Object.keys(flowmap).forEach(key => {
  fs.appendFileSync(fileName, `${!first?',':''}\n"${key}": `);
  write(key)
  first = false
})
fs.appendFileSync(fileName, '}');