add d3 data formatting & update map view with two links repr

src/helpers/d3Data.js

@@ -0,0 +1,75 @@
+import { hierarchy } from 'd3-hierarchy'
+
+function flatten (arr, accumulator = []) {
+  return arr.reduce((acc, child) => {
+    acc.push(child)
+    return child.children ? flatten(child.children, acc) : acc
+  }, accumulator)
+}
+
+function getLinked (text) {
+  const types = ['text_en_rebond', 'text_produits', 'text_de_depart']
+  return types.reduce((acc, type) => {
+    // Handle `null` and `undefined`
+    return text[type] ? [...acc, ...text[type]] : acc
+  }, [])
+}
+
+export function toSingleManyData (rawData) {
+  rawData.first = true
+  const h = hierarchy(rawData, d => getLinked(d))
+  h.each(node => {
+    if (node.parent && node.children) {
+      const id = node.parent.data.id
+      node.children = node.children.filter(child => child.data.id !== id)
+    }
+  })
+
+  const nodes = h.descendants()
+  const links = h.links()
+  nodes.forEach(node => {
+    Object.assign(node.data, {
+      type: node.data.__typename.toLowerCase(),
+      class: 'family-' + node.data.familles[0].id
+    })
+  })
+  return { nodes, links }
+}
+
+
+export function toManyManyData (rawData) {
+  rawData.first = true
+  const h = hierarchy(rawData, d => getLinked(d))
+  h.each(node => {
+    if (node.parent && node.children) {
+      const id = node.parent.data.id
+      node.children = node.children.filter(child => child.data.id !== id)
+    }
+  })
+
+  const ids = []
+  const nodes = []
+  const links = []
+  flatten(h.descendants()).filter(node => {
+    if (!ids.includes(node.data.id)) {
+      ids.push(node.data.id)
+      return true
+    }
+    return false
+  }).forEach(({ data, children, depth }) => {
+    nodes.push({ id: data.id, data })
+    if (children) {
+      children.forEach(child => {
+        links.push({ source: data.id, target: child.data.id })
+      })
+    }
+  })
+
+  nodes.forEach(node => {
+    Object.assign(node.data, {
+      type: node.data.__typename.toLowerCase(),
+      class: 'family-' + node.data.familles[0].id
+    })
+  })
+  return { nodes, links }
+}