add _buildBlueprintsAsnc in Fetcher

src/lib/Fetcher.js

@@ -1,5 +1,6 @@
 // FetcherTwo class interfaces with Google Sheet, and saves to a specified db
 import { google } from 'googleapis'
+import { buildDesaturated } from './blueprinters'
 import {
   fmtName,
   fmtBlueprinterTitles,
@@ -46,18 +47,8 @@ class Fetcher {
      * data structure updates as well. It is the model layer that determines the
      * performance of indexing the blueprints.
      */
-    this.blueprints = this._indexDbForBlueprints()
+    this.blueprints = null
-      .then(allUrls => {
+    this._buildBlueprintsAsync() // NB: modifies this.blueprints on completion
-        const allParts = allUrls.reduce((acc, url) => {
-          if (url.startsWith(this.id)) {
-            const parts = url.split('/')
-            acc.push([ parts[1], parts[2] ])
-            return acc
-          }
-        }, [])
-        console.log(allParts)
-        return {}
-      })
 
     /*
      * Google API setup
@@ -69,6 +60,29 @@ class Fetcher {
     this._saveViaBlueprinter = R.curry(this._saveViaBlueprinter)
   }
 
+  _buildBlueprintsAsync () {
+    return this.db.index()
+      .then(allUrls => {
+        const allParts = allUrls.reduce((acc, url) => {
+          if (url.startsWith(this.id)) {
+            const parts = url.split('/')
+            acc.push([ parts[1], parts[2] ])
+            return acc
+          }
+        }, [])
+        return allParts
+          .map(parts => buildDesaturated(
+            this.sheetId,
+            this.sheetName,
+            parts[0],
+            parts[1]
+          ))
+      })
+      .then(res => {
+        this.blueprints = res
+      })
+  }
+
   /** save data under a given tab name via its blueprinter, which generates
    * its resource name. Note that this is curried in the constructor.
    */
@@ -87,14 +101,6 @@ class Fetcher {
     )
   }
 
-  /** index the db and produce appropriate blueprints structure **/
-  _indexDbForBlueprints () {
-    return this.db.index()
-      .then(res => {
-        return res
-      })
-  }
-
   /** returns a Promise that resolves if access is granted to the account, and rejects otherwise. */
   authenticate (clientEmail, privateKey) {
     const googleAuth = new google.auth.JWT(clientEmail, null, privateKey, [
@@ -155,6 +161,7 @@ class Fetcher {
 
     if (Object.keys(this.blueprinters).indexOf(tab) > -1) {
       const bpConfig = this.blueprinters[tab]
+
       if (isFunction(bpConfig)) {
         // if bpConfig specifies a single blueprinter
         return this._saveViaBlueprinter(tab, data, bpConfig)

src/lib/blueprinters.js

@@ -16,8 +16,12 @@ export const defaultResource = {
   data: []
 }
 
-export function buildDesaturated (tab, resource) {
+export function buildDesaturated (sheetId, sheetName, tab, resource) {
   const bp = R.clone(defaultBlueprint)
+  bp.name = sheetName
+  bp.id = sheetId
+  bp.resources[tab] = resource
+  return bp
 }
 
 // import all default exports from 'blueprinters' folder
@@ -33,5 +37,6 @@ fs.readdirSync(normalizedPath).forEach(file => {
 // each file in blueprinters folder available for granular import from here.
 module.exports = Object.assign({
   defaultBlueprint,
-  defaultResource
+  defaultResource,
+  buildDesaturated
 }, allBps)