Script to generate test data for specified user (#402)

* add: script to generate random boxes and products for specified user

* **change**: comment

utils/import-random-data.js

@@ -0,0 +1,118 @@
+// GENERATE & IMPORT RANDOM 8000 BOXES AND 100 PRODUCTS INTO FIRESTORE
+
+/*
+Note: Import via UI worked for Firebase Realtime Database, but for firestore, the only way is to write own script
+
+1) Upgrade your firebase plan to "pay as you go" Blaze plan (import isn't supported for free version)
+  - https://firebase.google.com/pricing/
+
+2) Set limit on amount you can get charged (https://firebase.google.com/docs/firestore/quotas#manage_spending)
+   - I've imported cca 150k items and done looooot of reads and still didn't use more than what's free
+
+3) Install Firebase Admin SDK: 'npm install firebase-admin'
+
+4) Download Firebase Admin SDK private key
+  4.1: navigate to Firebase Console of your project click on the settings wheel next to the Overview section 
+       and choose "Service accounts tab" -> select Node.js
+  
+  4.2: Copy-paste the code you see to the beginning of this script (replace the same looking code on lines 30-36)
+
+  4.3: Click "Generate new private key" which downloads your key in JSON file. 
+       Place this json file to same folder as this script
+
+5) If you haven't done that yet, sign up into Boxwise (create organization and your user) and create one product
+  
+6) Set value of USER_EMAIL, PRODUCT_REFERENCE and ORGANIZATION_REFERENCE
+   - there should be a way how to retrieve the already existing products but just copying reference
+     from firestore UI was faster
+*/
+
+var admin = require("firebase-admin");
+var serviceAccount = require("./serviceAccountKey.json");
+
+admin.initializeApp({
+  credential: admin.credential.cert(serviceAccount),
+  databaseURL: "https://boxwise-development-f603b.firebaseio.com"
+});
+
+ // email you used as a login for the user
+let USER_EMAIL = "<FILL>"  
+/* ID of organization document in the Firestore, if not sure which organization you should choose
+this value is also shown in details of each user as organization reference - choose the one in your user */
+let ORGANIZATION_REFERENCE = "<FILL>"
+/*ID of product you've created with your user, find it in Firebase console in products collection
+or in ChromeDevtools network tab while creating it */
+let PRODUCT_REFERENCE = "<FILL>"
+
+let categories = ["Man", "Woman", "Adult", "Boy", "Girl", "Child", "Baby", "Food", "Hygiene", "Other"]
+
+admin.auth().listUsers(100)
+    .then(function(listUsersResult) {
+      let selectedUser = listUsersResult.users.filter(usr => usr.email.toLocaleLowerCase() == USER_EMAIL.toLocaleLowerCase())[0]
+
+      for (var i = 0; i < 100; i++) {   
+        //always create a new productItem object, otherwise all items are imported with the last generated random name    
+        let productItem = {
+          isDeleted: false,
+          organization: admin.firestore().doc('organizations/' + ORGANIZATION_REFERENCE),
+          createdBy: admin.firestore().doc('profiles/' + selectedUser.uid),
+          createdAt: Date().toLocaleString()
+        };
+
+        productItem.category = categories[Math.floor(Math.random() * categories.length)];
+        productItem.name = makeRandomName(10)
+
+        admin.firestore().collection("products").add(productItem)
+        console.log("product " + i)
+      }
+
+      for (var i = 0; i < 8000; i++) {   
+        let boxItem = {
+          organization: admin.firestore().doc('organizations/' + ORGANIZATION_REFERENCE),
+          createdBy: admin.firestore().doc('profiles/' + selectedUser.uid),
+          createdAt: Date().toLocaleString(),
+          product: admin.firestore().doc('products/' + PRODUCT_REFERENCE),
+        };
+
+        boxItem.comment = makeRandomName(10)
+        boxItem.quantity = Math.floor(Math.random() * 100)
+        boxItem.humanID = Math.floor(Math.random() * 999999)
+
+        // save once ready
+        admin.firestore().collection("boxes").add(boxItem)
+        console.log("box " + i)
+      }
+  })
+
+function makeRandomName(length) {
+    var text = "";
+    var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+    for (var i = 0; i < length; i++)
+      text += possible.charAt(Math.floor(Math.random() * possible.length));
+
+    return text;
+}
+
+
+// THIS IMPORTS THE DATA FROM ANY JSON FILE
+/*const data = require("./data.json");
+
+data && Object.keys(data).forEach(key => {
+    const nestedContent = data[key];
+
+    if (typeof nestedContent === "object") {
+        Object.keys(nestedContent).forEach(docTitle => {
+            admin.firestore()
+                .collection(key)
+                .doc(docTitle)
+                .set(nestedContent[docTitle])
+                .then((res) => {
+                    console.log("Document successfully written!");
+                })
+                .catch((error) => {
+                    console.error("Error writing document: ", error);
+                });
+        });
+    }
+});*/