From 7df304d9551a2b23782c9a0029c6d2d5cd1224c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Thuret?= <contact@sebastien-thuret.fr>
Date: Sat, 9 Oct 2021 18:16:50 +0200
Subject: [PATCH 1/2] Move the javascript in his own file

---
 app/static/js/app.js     | 325 ++++++++++++++++++++++++++++++++++++++
 app/templates/index.html | 331 +--------------------------------------
 2 files changed, 327 insertions(+), 329 deletions(-)
 create mode 100644 app/static/js/app.js

diff --git a/app/static/js/app.js b/app/static/js/app.js
new file mode 100644
index 0000000..b957b08
--- /dev/null
+++ b/app/static/js/app.js
@@ -0,0 +1,325 @@
+// @license magnet:?xt=urn:btih:0b31508aeb0634b347b8270c7bee4d411b5d4109&dn=agpl-3.0.txt AGPL-3.0
+// API host/endpoint
+var BaseUrl = window.location.protocol + "//" + window.location.host;
+var htmlRegex = /<(.*)>.*?|<(.*)\/>/;
+document.addEventListener('DOMContentLoaded', function(){
+    var sidenavElems = document.querySelectorAll('.sidenav');
+    var sidenavInstances = M.Sidenav.init(sidenavElems);
+
+    var app = new Vue({
+        el: '#app',
+        delimiters: ['[[',']]'],
+        data: {
+            BaseUrl: BaseUrl,
+            loading: true,
+            error: "",
+            langs: [],
+            settings: {},
+            sourceLang: "",
+            targetLang: "",
+
+            loadingTranslation: false,
+            inputText: "",
+            inputTextareaHeight: 250,
+            savedTanslatedText: "",
+            translatedText: "",
+            output: "",
+            charactersLimit: -1,
+
+            copyTextLabel: "Copy text",
+
+            suggestions: false,
+            isSuggesting: false,
+        },
+        mounted: function(){
+            var self = this;
+            var requestSettings = new XMLHttpRequest();
+            requestSettings.open('GET', BaseUrl + '/frontend/settings', true);
+
+            requestSettings.onload = function() {
+                if (this.status >= 200 && this.status < 400) {
+                    // Success!
+                    self.settings = JSON.parse(this.response);
+                    self.sourceLang = self.settings.language.source.code;
+                    self.targetLang = self.settings.language.target.code;
+                    self.charactersLimit = self.settings.charLimit;
+                    self.suggestions = self.settings.suggestions;
+                }else {
+                    self.error = "Cannot load /frontend/settings";
+                    self.loading = false;
+                }
+            };
+
+            requestSettings.onerror = function() {
+                self.error = "Error while calling /frontend/settings";
+                self.loading = false;
+            };
+
+            requestSettings.send();
+
+            var requestLanguages = new XMLHttpRequest();
+            requestLanguages.open('GET', BaseUrl + '/languages', true);
+
+            requestLanguages.onload = function() {
+                if (this.status >= 200 && this.status < 400) {
+                    // Success!
+                    self.langs = JSON.parse(this.response);
+                    self.langs.push({ name: 'Auto Detect (Experimental)', code: 'auto' })
+                    if (self.langs.length === 0){
+                        self.loading = false;
+                        self.error = "No languages available. Did you install the models correctly?"
+                        return;
+                    }
+
+                    self.loading = false;
+                } else {
+                    self.error = "Cannot load /languages";
+                    self.loading = false;
+                }
+            };
+
+            requestLanguages.onerror = function() {
+                self.error = "Error while calling /languages";
+                self.loading = false;
+            };
+
+            requestLanguages.send();
+        },
+        updated: function(){
+            M.FormSelect.init(this.$refs.sourceLangDropdown);
+            M.FormSelect.init(this.$refs.targetLangDropdown);
+            if (this.inputText === ""){
+                this.$refs.inputTextarea.style.height = this.inputTextareaHeight + "px";
+                this.$refs.translatedTextarea.style.height = this.inputTextareaHeight + "px";
+            }else{
+                this.$refs.inputTextarea.style.height = this.$refs.translatedTextarea.style.height = "1px";
+                this.$refs.inputTextarea.style.height = Math.max(this.inputTextareaHeight, this.$refs.inputTextarea.scrollHeight + 32) + "px";
+                this.$refs.translatedTextarea.style.height = Math.max(this.inputTextareaHeight, this.$refs.translatedTextarea.scrollHeight + 32) + "px";
+            }
+
+            if (this.charactersLimit !== -1 && this.inputText.length >= this.charactersLimit){
+                this.inputText = this.inputText.substring(0, this.charactersLimit);
+            }
+
+            // Update "selected" attribute (to overcome a vue.js limitation)
+            // but properly display checkmarks on supported browsers.
+            // Also change the <select> width value depending on the <option> length
+            for (var i = 0; i < this.$refs.sourceLangDropdown.children.length; i++){
+                var el = this.$refs.sourceLangDropdown.children[i];
+                if (el.value === this.sourceLang){
+                    el.setAttribute('selected', '');
+                    this.$refs.sourceLangDropdown.style.width = getTextWidth(el.text) + 24 + 'px';
+                }else{
+                    el.removeAttribute('selected');
+                }
+            }
+            for (var i = 0; i < this.$refs.targetLangDropdown.children.length; i++){
+                var el = this.$refs.targetLangDropdown.children[i];
+                if (el.value === this.targetLang){
+                    el.setAttribute('selected', '');
+                    this.$refs.targetLangDropdown.style.width = getTextWidth(el.text) + 24 + 'px';
+                }else{
+                    el.removeAttribute('selected');
+                }
+            }
+
+        },
+        computed: {
+            requestCode: function(){
+                return ['const res = await fetch("' + this.BaseUrl + '/translate", {',
+                    '	method: "POST",',
+                    '	body: JSON.stringify({',
+                    '		q: "' + this.$options.filters.escape(this.inputText) + '",',
+                    '		source: "' + this.$options.filters.escape(this.sourceLang) + '",',
+                    '		target: "' + this.$options.filters.escape(this.targetLang) + '",',
+                    '		format: "' + (this.isHtml ? "html" : "text") + '"',
+                    '	}),',
+                    '	headers: { "Content-Type": "application/json" }',
+                    '});',
+                    '',
+                    'console.log(await res.json());'].join("\n");
+            },
+
+            isHtml: function(){
+                return htmlRegex.test(this.inputText);
+            },
+            canSendSuggestion() {
+                return this.translatedText.trim() !== "" && this.translatedText !== this.savedTanslatedText;
+            }
+        },
+        filters: {
+            escape: function(v){
+                return v.replace('"', '\\\"');
+            },
+            highlight: function(v){
+                return Prism.highlight(v, Prism.languages.javascript, 'javascript');
+            }
+        },
+        methods: {
+            abortPreviousTransRequest: function(){
+                if (this.transRequest){
+                    this.transRequest.abort();
+                    this.transRequest = null;
+                }
+            },
+            swapLangs: function(e){
+                this.closeSuggestTranslation(e)
+
+                var t = this.sourceLang;
+                this.sourceLang = this.targetLang;
+                this.targetLang = t;
+                this.inputText = this.translatedText;
+                this.translatedText = "";
+                this.handleInput();
+            },
+            dismissError: function(){
+                this.error = '';
+            },
+            handleInput: function(e){
+                this.closeSuggestTranslation(e)
+
+                if (this.timeout) clearTimeout(this.timeout);
+                this.timeout = null;
+
+                if (this.inputText === ""){
+                    this.translatedText = "";
+                    this.output = "";
+                    this.abortPreviousTransRequest();
+                    this.loadingTranslation = false;
+                    return;
+                }
+
+                var self = this;
+
+                self.loadingTranslation = true;
+                this.timeout = setTimeout(function(){
+                    self.abortPreviousTransRequest();
+
+                    var request = new XMLHttpRequest();
+                    self.transRequest = request;
+
+                    var data = new FormData();
+                    data.append("q", self.inputText);
+                    data.append("source", self.sourceLang);
+                    data.append("target", self.targetLang);
+                    data.append("format", self.isHtml ? "html" : "text");
+                    data.append("api_key", localStorage.getItem("api_key") || "");
+
+                    request.open('POST', BaseUrl + '/translate', true);
+
+                    request.onload = function() {
+                        try{
+                            var res = JSON.parse(this.response);
+                            // Success!
+                            if (res.translatedText !== undefined){
+                                self.translatedText = res.translatedText;
+                                self.loadingTranslation = false;
+                                self.output = JSON.stringify(res, null, 4);
+                            }else{
+                                throw new Error(res.error || "Unknown error");
+                            }
+                        }catch(e){
+                            self.error = e.message;
+                            self.loadingTranslation = false;
+                        }
+                    };
+
+                    request.onerror = function() {
+                        self.error = "Error while calling /translate";
+                        self.loadingTranslation = false;
+                    };
+
+                    request.send(data);
+                }, '{{ frontendTimeout }}');
+            },
+            copyText: function(e){
+                e.preventDefault();
+                this.$refs.translatedTextarea.select();
+                this.$refs.translatedTextarea.setSelectionRange(0, 9999999); /* For mobile devices */
+                document.execCommand("copy");
+
+                if (this.copyTextLabel === "Copy text"){
+                    this.copyTextLabel = "Copied";
+                    var self = this;
+                    setTimeout(function(){
+                        self.copyTextLabel = "Copy text";
+                    }, 1500);
+                }
+            },
+            suggestTranslation: function(e) {
+                e.preventDefault();
+                this.savedTanslatedText = this.translatedText
+
+                this.isSuggesting = true;
+            },
+            closeSuggestTranslation: function(e) {
+                this.translatedText = this.savedTanslatedText
+
+                e.preventDefault();
+
+                this.isSuggesting = false;
+            },
+            sendSuggestion: function(e) {
+                e.preventDefault();
+
+                var self = this;
+
+                var request = new XMLHttpRequest();
+                self.transRequest = request;
+
+                var data = new FormData();
+                data.append("q", self.inputText);
+                data.append("s", self.translatedText);
+                data.append("source", self.sourceLang);
+                data.append("target", self.targetLang);
+
+                request.open('POST', BaseUrl + '/suggest', true);
+                request.onload = function() {
+                    try{
+                        var res = JSON.parse(this.response);
+                        if (res.success){
+                            M.toast({html: 'Thanks for your correction.'})
+                            self.closeSuggestTranslation(e)
+                        }else{
+                            throw new Error(res.error || "Unknown error");
+                        }
+                    }catch(e){
+                        self.error = e.message;
+                        self.closeSuggestTranslation(e)
+                    }
+                };
+
+                request.onerror = function() {
+                    self.error = "Error while calling /suggest";
+                    self.loadingTranslation = false;
+                };
+
+                request.send(data);
+            },
+            deleteText: function(e){
+                e.preventDefault();
+                this.inputText = this.translatedText = this.output = "";
+            }
+        }
+    });
+
+});
+
+function getTextWidth(text) {
+    var canvas = getTextWidth.canvas || (getTextWidth.canvas = document.createElement("canvas"));
+    var ctx = canvas.getContext("2d");
+    ctx.font = 'bold 16px sans-serif';
+    var textWidth = Math.ceil(ctx.measureText(text).width);
+    return textWidth;
+}
+
+function setApiKey(){
+    var prevKey = localStorage.getItem("api_key") || "";
+    var newKey = "";
+    newKey = window.prompt("Type in your API Key. If you need an API key, contact the server operator.", prevKey);
+    if (newKey === null) newKey = "";
+
+    localStorage.setItem("api_key", newKey);
+}
+
+// @license-end
\ No newline at end of file
diff --git a/app/templates/index.html b/app/templates/index.html
index 4ca063f..0af2484 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -246,334 +246,7 @@
 	// @license-end
 	</script>
 
-	<script src="{{ url_for('static', filename='js/prism.min.js') }}"></script>
-
-	<script>
-	// @license magnet:?xt=urn:btih:0b31508aeb0634b347b8270c7bee4d411b5d4109&dn=agpl-3.0.txt AGPL-3.0
-	// API host/endpoint
-	var BaseUrl = window.location.protocol + "//" + window.location.host;
-    var htmlRegex = /<(.*)>.*?|<(.*)\/>/;
-	document.addEventListener('DOMContentLoaded', function(){
-		var sidenavElems = document.querySelectorAll('.sidenav');
-		var sidenavInstances = M.Sidenav.init(sidenavElems);
-
-		var app = new Vue({
-		el: '#app',
-		delimiters: ['[[',']]'],
-		data: {
-			BaseUrl: BaseUrl,
-			loading: true,
-			error: "",
-			langs: [],
-			settings: {},
-			sourceLang: "",
-			targetLang: "",
-
-			loadingTranslation: false,
-			inputText: "",
-			inputTextareaHeight: 250,
-            savedTanslatedText: "",
-            translatedText: "",
-			output: "",
-			charactersLimit: -1,
-
-			copyTextLabel: "Copy text",
-
-            suggestions: false,
-            isSuggesting: false,
-		},
-		mounted: function(){
-			var self = this;
-			var requestSettings = new XMLHttpRequest();
-			requestSettings.open('GET', BaseUrl + '/frontend/settings', true);
-
-			requestSettings.onload = function() {
-			if (this.status >= 200 && this.status < 400) {
-					// Success!
-					self.settings = JSON.parse(this.response);
-					self.sourceLang = self.settings.language.source.code;
-					self.targetLang = self.settings.language.target.code;
-					self.charactersLimit = self.settings.charLimit;
-                    self.suggestions = self.settings.suggestions;
-            }else {
-					self.error = "Cannot load /frontend/settings";
-					self.loading = false;
-			}
-			};
-
-			requestSettings.onerror = function() {
-			self.error = "Error while calling /frontend/settings";
-			self.loading = false;
-			};
-
-			requestSettings.send();
-
-			var requestLanguages = new XMLHttpRequest();
-			requestLanguages.open('GET', BaseUrl + '/languages', true);
-
-			requestLanguages.onload = function() {
-			if (this.status >= 200 && this.status < 400) {
-				// Success!
-				self.langs = JSON.parse(this.response);
-				self.langs.push({ name: 'Auto Detect (Experimental)', code: 'auto' })
-				if (self.langs.length === 0){
-					self.loading = false;
-					self.error = "No languages available. Did you install the models correctly?"
-					return;
-				}
-
-				self.loading = false;
-			} else {
-				self.error = "Cannot load /languages";
-				self.loading = false;
-			}
-			};
-
-			requestLanguages.onerror = function() {
-			self.error = "Error while calling /languages";
-			self.loading = false;
-			};
-
-			requestLanguages.send();
-		},
-		updated: function(){
-				M.FormSelect.init(this.$refs.sourceLangDropdown);
-				M.FormSelect.init(this.$refs.targetLangDropdown);
-				if (this.inputText === ""){
-					this.$refs.inputTextarea.style.height = this.inputTextareaHeight + "px";
-					this.$refs.translatedTextarea.style.height = this.inputTextareaHeight + "px";
-				}else{
-					this.$refs.inputTextarea.style.height = this.$refs.translatedTextarea.style.height = "1px";
-					this.$refs.inputTextarea.style.height = Math.max(this.inputTextareaHeight, this.$refs.inputTextarea.scrollHeight + 32) + "px";
-					this.$refs.translatedTextarea.style.height = Math.max(this.inputTextareaHeight, this.$refs.translatedTextarea.scrollHeight + 32) + "px";
-				}
-
-				if (this.charactersLimit !== -1 && this.inputText.length >= this.charactersLimit){
-					this.inputText = this.inputText.substring(0, this.charactersLimit);
-				}
-
-				// Update "selected" attribute (to overcome a vue.js limitation)
-				// but properly display checkmarks on supported browsers.
-				// Also change the <select> width value depending on the <option> length
-				for (var i = 0; i < this.$refs.sourceLangDropdown.children.length; i++){
-					var el = this.$refs.sourceLangDropdown.children[i];
-					if (el.value === this.sourceLang){
-						el.setAttribute('selected', '');
-						this.$refs.sourceLangDropdown.style.width = getTextWidth(el.text) + 24 + 'px';
-					}else{
-						el.removeAttribute('selected');
-					}
-				}
-				for (var i = 0; i < this.$refs.targetLangDropdown.children.length; i++){
-					var el = this.$refs.targetLangDropdown.children[i];
-					if (el.value === this.targetLang){
-						el.setAttribute('selected', '');
-						this.$refs.targetLangDropdown.style.width = getTextWidth(el.text) + 24 + 'px';
-					}else{
-						el.removeAttribute('selected');
-					}
-				}
-
-		},
-		computed: {
-			requestCode: function(){
-				return ['const res = await fetch("' + this.BaseUrl + '/translate", {',
-	'	method: "POST",',
-	'	body: JSON.stringify({',
-	'		q: "' + this.$options.filters.escape(this.inputText) + '",',
-	'		source: "' + this.$options.filters.escape(this.sourceLang) + '",',
-	'		target: "' + this.$options.filters.escape(this.targetLang) + '",',
-	'		format: "' + (this.isHtml ? "html" : "text") + '"',
-	'	}),',
-	'	headers: { "Content-Type": "application/json" }',
-	'});',
-	'',
-	'console.log(await res.json());'].join("\n");
-			},
-
-			isHtml: function(){
-				return htmlRegex.test(this.inputText);
-			},
-            canSendSuggestion() {
-                return this.translatedText.trim() !== "" && this.translatedText !== this.savedTanslatedText;
-            }
-        },
-		filters: {
-			escape: function(v){
-				return v.replace('"', '\\\"');
-			},
-			highlight: function(v){
-				return Prism.highlight(v, Prism.languages.javascript, 'javascript');
-			}
-		},
-		methods: {
-			abortPreviousTransRequest: function(){
-				if (this.transRequest){
-					this.transRequest.abort();
-					this.transRequest = null;
-				}
-			},
-			swapLangs: function(e){
-                this.closeSuggestTranslation(e)
-
-				var t = this.sourceLang;
-				this.sourceLang = this.targetLang;
-				this.targetLang = t;
-				this.inputText = this.translatedText;
-				this.translatedText = "";
-				this.handleInput();
-			},
-			dismissError: function(){
-				this.error = '';
-			},
-			handleInput: function(e){
-                this.closeSuggestTranslation(e)
-
-				if (this.timeout) clearTimeout(this.timeout);
-				this.timeout = null;
-
-				if (this.inputText === ""){
-					this.translatedText = "";
-					this.output = "";
-					this.abortPreviousTransRequest();
-					this.loadingTranslation = false;
-					return;
-				}
-
-				var self = this;
-
-				self.loadingTranslation = true;
-				this.timeout = setTimeout(function(){
-					self.abortPreviousTransRequest();
-
-					var request = new XMLHttpRequest();
-					self.transRequest = request;
-
-					var data = new FormData();
-					data.append("q", self.inputText);
-					data.append("source", self.sourceLang);
-					data.append("target", self.targetLang);
-					data.append("format", self.isHtml ? "html" : "text");
-					data.append("api_key", localStorage.getItem("api_key") || "");
-
-					request.open('POST', BaseUrl + '/translate', true);
-
-					request.onload = function() {
-					try{
-						var res = JSON.parse(this.response);
-						// Success!
-						if (res.translatedText !== undefined){
-							self.translatedText = res.translatedText;
-							self.loadingTranslation = false;
-							self.output = JSON.stringify(res, null, 4);
-						}else{
-							throw new Error(res.error || "Unknown error");
-						}
-					}catch(e){
-						self.error = e.message;
-						self.loadingTranslation = false;
-					}
-					};
-
-					request.onerror = function() {
-					self.error = "Error while calling /translate";
-					self.loadingTranslation = false;
-					};
-
-					request.send(data);
-				}, '{{ frontendTimeout }}');
-			},
-			copyText: function(e){
-				e.preventDefault();
-				this.$refs.translatedTextarea.select();
-				this.$refs.translatedTextarea.setSelectionRange(0, 9999999); /* For mobile devices */
-				document.execCommand("copy");
-
-				if (this.copyTextLabel === "Copy text"){
-					this.copyTextLabel = "Copied";
-					var self = this;
-					setTimeout(function(){
-						self.copyTextLabel = "Copy text";
-					}, 1500);
-				}
-			},
-            suggestTranslation: function(e) {
-                e.preventDefault();
-                this.savedTanslatedText = this.translatedText
-
-                this.isSuggesting = true;
-            },
-            closeSuggestTranslation: function(e) {
-                this.translatedText = this.savedTanslatedText
-
-                e.preventDefault();
-
-                this.isSuggesting = false;
-            },
-            sendSuggestion: function(e) {
-                e.preventDefault();
-
-                var self = this;
-
-                var request = new XMLHttpRequest();
-                self.transRequest = request;
-
-                var data = new FormData();
-                data.append("q", self.inputText);
-                data.append("s", self.translatedText);
-                data.append("source", self.sourceLang);
-                data.append("target", self.targetLang);
-
-                request.open('POST', BaseUrl + '/suggest', true);
-                request.onload = function() {
-                    try{
-                        var res = JSON.parse(this.response);
-                        if (res.success){
-                            M.toast({html: 'Thanks for your correction.'})
-                            self.closeSuggestTranslation(e)
-                        }else{
-                            throw new Error(res.error || "Unknown error");
-                        }
-                    }catch(e){
-                        self.error = e.message;
-                        self.closeSuggestTranslation(e)
-                    }
-                };
-
-                request.onerror = function() {
-                    self.error = "Error while calling /suggest";
-                    self.loadingTranslation = false;
-                };
-
-                request.send(data);
-            },
-			deleteText: function(e){
-				e.preventDefault();
-				this.inputText = this.translatedText = this.output = "";
-			}
-		}
-		});
-
-	});
-
-	function getTextWidth(text) {
-		var canvas = getTextWidth.canvas || (getTextWidth.canvas = document.createElement("canvas"));
-		var ctx = canvas.getContext("2d");
-		ctx.font = 'bold 16px sans-serif';
-		var textWidth = Math.ceil(ctx.measureText(text).width);
-		return textWidth;
-	}
-
-	function setApiKey(){
-		var prevKey = localStorage.getItem("api_key") || "";
-		var newKey = "";
-		newKey = window.prompt("Type in your API Key. If you need an API key, contact the server operator.", prevKey);
-		if (newKey === null) newKey = "";
-
-		localStorage.setItem("api_key", newKey);
-	}
-
-	// @license-end
-	</script>
+    <script src="{{ url_for('static', filename='js/prism.min.js') }}"></script>
+    <script src="{{ url_for('static', filename='js/app.js') }}"></script>
 </body>
 </html>

From 7b3d9f286e186d4ac4ae582642b7f67899269c12 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Thuret?= <contact@sebastien-thuret.fr>
Date: Sat, 9 Oct 2021 18:25:28 +0200
Subject: [PATCH 2/2] Added version number for assets that may change

---
 app/app.py               | 2 ++
 app/templates/index.html | 5 ++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/app/app.py b/app/app.py
index 659409f..e1a7681 100644
--- a/app/app.py
+++ b/app/app.py
@@ -1,6 +1,7 @@
 import os
 from functools import wraps
 
+import pkg_resources
 from flask import Flask, abort, jsonify, render_template, request
 from flask_swagger import swagger
 from flask_swagger_ui import get_swaggerui_blueprint
@@ -176,6 +177,7 @@ def create_app(args):
             frontendTimeout=args.frontend_timeout,
             api_keys=args.api_keys,
             web_version=os.environ.get("LT_WEB") is not None,
+            version=pkg_resources.require("LibreTranslate")[0].version
         )
 
     @app.route("/javascript-licenses", methods=["GET"])
diff --git a/app/templates/index.html b/app/templates/index.html
index 0af2484..e2a6f8c 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -19,7 +19,7 @@
 	<link rel="stylesheet" href="{{ url_for('static', filename='css/materialize.min.css') }}">
 	<link rel="stylesheet" href="{{ url_for('static', filename='css/material-icons.css') }}" />
 	<link rel="stylesheet" href="{{ url_for('static', filename='css/prism.min.css') }}" />
-	<link rel="stylesheet" href="{{ url_for('static', filename='css/main.css') }}?t=2" />
+	<link rel="stylesheet" href="{{ url_for('static', filename='css/main.css') }}?v={{ version }}" />
 
 	{% if gaId %}
 	<!-- Global site tag (gtag.js) - Google Analytics -->
@@ -245,8 +245,7 @@
 	window.Prism.manual = true;
 	// @license-end
 	</script>
-
     <script src="{{ url_for('static', filename='js/prism.min.js') }}"></script>
-    <script src="{{ url_for('static', filename='js/app.js') }}"></script>
+    <script src="{{ url_for('static', filename='js/app.js') }}?v={{ version }}"></script>
 </body>
 </html>