From 936814483d5ce343e8aeee73bf7256aeef2323d5 Mon Sep 17 00:00:00 2001
From: Alex Frank <mail@alexfrank.de>
Date: Wed, 23 Feb 2022 21:51:13 +0100
Subject: [PATCH] Added SAP community badges to the enhanced picture

---
 _i18n/messages.properties                     |  5 +
 .../profilePic/controller/App.controller.js   | 44 ++++++++-
 app/profilePic/profilePic/view/App.view.xml   |  4 +-
 routes/profilePic.js                          | 93 ++++++++++++++++++-
 4 files changed, 136 insertions(+), 10 deletions(-)

diff --git a/_i18n/messages.properties b/_i18n/messages.properties
index 37ffeec..3e7b398 100644
--- a/_i18n/messages.properties
+++ b/_i18n/messages.properties
@@ -8,6 +8,11 @@ Toolbar1=Choose Selfie Template
 Toolbar2=Choose Your Picture and Upload
 Toolbar3=Edit and Download Final Image
 Upload=Enhance Your Picture
+SaveAs=Save As
 placeholder=Choose File for Upload...
+enterSapCommunityName=Enter SAP Community Name
+yourSapCommunityNameEG=Your community name, e. g.
+close=Close
+enhance=Enhance
 gui.loading=Processing Picture
 gui.loadingLong=Please wait ...Processing Picture
\ No newline at end of file
diff --git a/app/profilePic/profilePic/controller/App.controller.js b/app/profilePic/profilePic/controller/App.controller.js
index cb03e21..c93e012 100644
--- a/app/profilePic/profilePic/controller/App.controller.js
+++ b/app/profilePic/profilePic/controller/App.controller.js
@@ -7,9 +7,12 @@ sap.ui.define([
     "sap/ui/core/Core",
     "sap/ui/model/json/JSONModel",
     "sap/ui/Device",
-    "sap/suite/ui/commons/library"
+    "sap/suite/ui/commons/library",
+    "sap/m/Dialog",
+    "sap/m/Button",
+    "sap/m/Input",
 ],
-    function (BaseController, MessageToast, oCore, JSONModel, Device, SuiteLibrary) {
+    function (BaseController, MessageToast, oCore, JSONModel, Device, SuiteLibrary, Dialog, Button, Input) {
 
         return BaseController.extend("profilePic.controller.App", {
             onInit: function () {
@@ -25,7 +28,41 @@ sap.ui.define([
                 }
             },
 
-            uploadPressed: async function (oEvent) {
+            enhancePressed: async function (oEvent) {
+                if (!this.oEnhanceDialog) {
+                    var oResourceBundle = this.getView()
+                                              .getModel("i18n")
+                                              .getResourceBundle()
+                    this.oEnhanceDialog = new Dialog({
+                        title: oResourceBundle.getText("enterSapCommunityName"),
+                        draggable: true,
+                        content: new Input({
+                            placeholder: oResourceBundle.getText("yourSapCommunityNameEG") + "dj.adams.sap",
+                            value: "{/sapCommunityName}"
+                        }),
+                        buttons: [ 
+                            new Button({
+                                text: oResourceBundle.getText("enhance"),
+                                press: function () {
+                                    this.upload()
+                                    this.oEnhanceDialog.close()
+                                }.bind(this)
+                            }),
+                            new Button({
+                                text: oResourceBundle.getText("close"),
+                                press: function () {
+                                    this.oEnhanceDialog.close()
+                                }.bind(this)
+                            })
+                        ]
+                    })
+                    this.getView().addDependent(this.oEnhanceDialog)
+                }
+
+                this.oEnhanceDialog.open()
+            },
+
+            upload: async function (oEvent) {
                 let view = this.getView()
                 let controller = view.getController()
                 let oFileUploader = view.byId("fileToUpload")
@@ -35,6 +72,7 @@ sap.ui.define([
                 }
                 let param = view.byId("uploadParam")
                 //param.setValue(oInput.getActivePage())
+                param.setValue(this.getView().getModel().getData().sapCommunityName)
                 oFileUploader.getParameters()
                 var oImageEditor = this.getView().byId("image")
                 oImageEditor.applyVisibleCrop()
diff --git a/app/profilePic/profilePic/view/App.view.xml b/app/profilePic/profilePic/view/App.view.xml
index abb2e60..d5a81c4 100644
--- a/app/profilePic/profilePic/view/App.view.xml
+++ b/app/profilePic/profilePic/view/App.view.xml
@@ -11,10 +11,10 @@
         <e:customToolbarControls>
             <unified:FileUploader id="fileToUpload" sendXHR="true" width="400px" placeholder="{i18n>placeholder}" uploadUrl="/upload_profile_pic" uploadComplete="uploadComplete" change="onFileChange">
                 <unified:parameters>
-                    <unified:FileUploaderParameter id="uploadParam" name="selectedPic"/>
+                    <unified:FileUploaderParameter id="uploadParam" name="sapCommunityName"/>
                 </unified:parameters>
             </unified:FileUploader>
-            <Button id="button" text="{i18n>Upload}" press="uploadPressed"></Button>
+            <Button id="button" text="{i18n>Upload}" press="enhancePressed"></Button>            
             <Button type="Emphasized" text="Save As" press="onSaveAsPress" />
         </e:customToolbarControls> 
         <e:customEllipseCropItems>
diff --git a/routes/profilePic.js b/routes/profilePic.js
index 54472f7..146e4f4 100644
--- a/routes/profilePic.js
+++ b/routes/profilePic.js
@@ -2,9 +2,12 @@ import sharp from 'sharp'
 import multer from 'multer'
 import lodash from 'lodash'
 import * as svg from '../utils/svgRender.js'
-import { promises as fs } from 'fs'
+import { promises as fsPromises } from 'fs'
 import * as path from 'path'
 
+import https from 'https'
+import fs from 'fs'
+
 /**       
  * Route for handing upload, manipulation, and download of the profile picture
  * @param {Object} app - Express application instance
@@ -17,10 +20,71 @@ export default function (app) {
      * @returns {Promise<string>}
      */
     async function loadImageB64(image) {
+        return await fsPromises.readFile(path.resolve(app.baseDir, image), { encoding: 'base64' })
+    }
+
+    /**
+     * Download an image URL to the file system
+     * @param {string} url 
+     * @returns {Promise<T>}
+     */
+    async function download(url) {
+        const path = getPathFromImgUrl(url)
+        if (fs.existsSync(path)) return
+        return new Promise((resolve, reject) => {
+            const writeStream = fs.createWriteStream(path)
+            https.get(url, (res) => {
+                res.pipe(writeStream)
+                writeStream.on('finish', () => resolve())
+            }).on('error', (error) => reject(error))
+        })
+    }
+
+    /**
+     * Get the file system path for an image URL
+     * @param {string} url 
+     * @returns {string}
+     */
+    function getPathFromImgUrl (url) {
+        return './images/' + path.basename(new URL(url).pathname)
+    }
 
-        return await fs.readFile(path.resolve(app.baseDir, image), { encoding: 'base64' })
+    /**
+     * Get URLs of badges for a SAP community name
+     * @param {string} sapCommunityName
+     * @returns {Promise<Array<string>>}
+     */
+    async function getBadgeUrls (sapCommunityName) {
+        const url = 'https://people-api.services.sap.com/rs/showcaseBadge/' + sapCommunityName;        
+        return new Promise((resolve, reject) => {    
+            https.get(url, (res) => {
+                let body = ''
+                res.on('data', (chunk) => body += chunk.toString())
+                res.on('end', () => {
+                    if (res.statusCode === 200) {
+                        let badgeUrls = []
+                        JSON.parse(body).forEach((ele) => {
+                            badgeUrls.push(ele.imageUrl)
+                        })
+                        resolve(badgeUrls)
+                    }
+                })
+                res.on('error', (error) => reject(error))
+            })
+        })
     }
 
+    /**
+     * Read an svg image from file system and return it as a base64 png string
+     * @param {string} path 
+     * @returns {Promise<string>}
+     */
+    async function loadSvgAsPngB64 (path) {
+        const svgBuffer = await fsPromises.readFile(path)
+        const pngBuffer = await sharp(svgBuffer).png().toBuffer()
+        return await pngBuffer.toString('base64')
+    }    
+
     const limits = {
         files: 1, // allow only 1 file per request
         fileSize: 1024 * 1024 * 20, // 20 MB (max file size)
@@ -69,16 +133,35 @@ export default function (app) {
             //Convert the uploaded content to PNG, rotate based upon metadata and transfer it to a buffer
             const uploadContent = await sharp(file.buffer).rotate().png().toBuffer()
             const uploadContentMeta = await sharp(uploadContent).metadata()
+
             let body =
                 svg.svgHeader(uploadContentMeta.width, uploadContentMeta.height) +
                 svg.svgItem(0, 0, 0, uploadContent.toString('base64'), uploadContentMeta.height, uploadContentMeta.width, true) +
-                svg.svgItem(0, 0, 0, await loadImageB64('./images/boarder.png'), uploadContentMeta.height, uploadContentMeta.width, true) +
-                svg.svgEnd()
+                svg.svgItem(0, 0, 0, await loadImageB64('./images/boarder.png'), uploadContentMeta.height, uploadContentMeta.width, true) 
+
+            //Load profile badges from SAP community and add them to the image
+            const badgeUrls = await getBadgeUrls(req.body.sapCommunityName)
+            await Promise.all(badgeUrls.map((badgeUrl) => download(badgeUrl)))
+            const halfImgHeight = uploadContentMeta.height / 2
+            const halfImgWidth = uploadContentMeta.width / 2
+            const badgeRadius = uploadContentMeta.width / 12      
+            for (let i = 0; i < badgeUrls.length; i++) {
+                //Parametric equation of a circle: x=radius*cos(angle[rad]) y=radius*sin(angle[rad])
+                //However, y and x axis are switched in svg library. So x is the vertical axis in the following code
+                const x = halfImgHeight - 0.80 * halfImgHeight * Math.sin(Math.PI * (1.22 + i * 0.14)) - badgeRadius
+                const y = halfImgWidth + 0.80 * halfImgWidth * Math.cos(Math.PI * (1.22 + i * 0.14)) - badgeRadius
+                const badgePath = getPathFromImgUrl(badgeUrls[i])
+                const imgB64 = badgeUrls[i].slice(-3) === 'svg'
+                                  ? await loadSvgAsPngB64(badgePath)
+                                  : await loadImageB64(badgePath)
+                body += svg.svgItem(x, y, 0, imgB64, badgeRadius * 2, badgeRadius * 2, true)
+            }
+
+            body += svg.svgEnd()
 
             const png = await sharp(Buffer.from(body)).png().toBuffer()
             const pngOut = await png.toString('base64')
             res.type("image/png").status(200).send(pngOut)
-
         })
     })
 }
\ No newline at end of file