Improve localstorage auto backups

css/window.css

@@ -670,6 +670,9 @@
 		position: absolute;
 		right: 8px;
 	}
+	#start_screen button {
+		margin-right: 4px;
+	}
 	#start_screen .recent_project {
 		margin: 2px 0;
 		display: flex;

js/api.js

@@ -20,7 +20,6 @@ const Blockbench = {
 		Undo.finishEdit()
 	},
 	reload() {
-		localStorage.removeItem('backup_model')
 		if (isApp) {
 			Blockbench.setProgress(0)
 			Blockbench.addFlag('allow_closing')

js/blockbench.js

@@ -246,11 +246,13 @@ function unselectAll() {
 	TickUpdates.selection = true;
 }
 //Backup
+const AutoBackupModels = {};
 setInterval(function() {
 	if (Project && (Outliner.root.length || Project.textures.length)) {
 		try {
-			var model = Codecs.project.compile({compressed: false, minify: true, backup: true});
-			localStorage.setItem('backup_model', model)
+			var model = Codecs.project.compile({compressed: false, backup: true, raw: true});
+			AutoBackupModels[Project.uuid] = model;
+			localStorage.setItem('backup_model', JSON.stringify(AutoBackupModels));
 		} catch (err) {
 			console.error('Unable to create backup. ', err)
 		}

js/desktop.js

@@ -337,7 +337,6 @@ function createBackup(init) {
 	if (init || elements.length === 0) return;
 
 	var model = Codecs.project.compile({compressed: true, backup: true})
-	localStorage.setItem('backup_model', model)
 	var file_name = 'backup_'+d.getDate()+'.'+(d.getMonth()+1)+'.'+(d.getYear()-100)+'_'+d.getHours()+'.'+d.getMinutes()
 	var file_path = folder_path+osfs+file_name+'.bbmodel'
 
@@ -385,7 +384,6 @@ function closeBlockbenchWindow() {
 	window.onbeforeunload = null;
 	Blockbench.addFlag('allow_closing');
 	Blockbench.dispatchEvent('before_closing')
-	localStorage.removeItem('backup_model')
 	if (Project.EditSession) Project.EditSession.quit()
 	return currentwindow.close();
 };

js/interface/start_screen.js

@@ -257,18 +257,24 @@ onVueSetup(function() {
 		Blockbench.startup_count = parseInt(localStorage.getItem('startups')||0)
 
 		//Backup Model
-		if (localStorage.getItem('backup_model') && (!isApp || !currentwindow.webContents.second_instance)) {
-			var backup_model = localStorage.getItem('backup_model')
-			localStorage.removeItem('backup_model')
+		if (localStorage.getItem('backup_model') && (!isApp || !currentwindow.webContents.second_instance) && localStorage.getItem('backup_model').length > 40) {
+			var backup_models = localStorage.getItem('backup_model')
 
-			addStartScreenSection({
+			let section = addStartScreenSection({
 				color: 'var(--color-back)',
 				graphic: {type: 'icon', icon: 'fa-archive'},
 				text: [
 					{type: 'h2', text: tl('message.recover_backup.title')},
 					{text: tl('message.recover_backup.message')},
-					{type: 'button', text: tl('dialog.ok'), click: (e) => {
-						loadModelFile({content: backup_model, path: 'backup.bbmodel', no_file: true})
+					{type: 'button', text: tl('message.recover_backup.recover'), click: (e) => {
+						for (let uuid in backup_models) {
+							loadModelFile({content: backup_models[uuid], path: 'backup.bbmodel', no_file: true})
+						}
+						section.delete();
+					}},
+					{type: 'button', text: tl('dialog.discard'), click: (e) => {
+						localStorage.removeItem('backup_model');
+						section.delete();
 					}}
 				]
 			})

js/io/project.js

@@ -330,6 +330,9 @@ class ModelProject {
 			ModelProject.all.remove(this);
 			delete ProjectData[this.uuid];
 			Project = 0;
+			
+			delete AutoBackupModels[this.uuid];
+			localStorage.setItem('backup_model', JSON.stringify(AutoBackupModels));
 
 			if (last_selected && last_selected !== this) {
 				last_selected.select();

lang/en.json

@@ -174,8 +174,9 @@
 	"message.rotation_limit.message": "Rotations are limited by Minecraft to one axis and 22.5 degree increments. Rotating on a different axis will clear all rotations on the other axes. Convert the model to \"Generic Model\" if you are modeling for other purposes and need free rotations.",
 	"message.file_not_found.title": "File Not Found",
 	"message.file_not_found.message": "Blockbench could not find the requested file. Make sure it is saved locally and not in a cloud.",
-	"message.recover_backup.title": "Recover Model",
-	"message.recover_backup.message": "Blockbench was closed without saving. Do you want to recover the model?",
+	"message.recover_backup.title": "Recover Models",
+	"message.recover_backup.message": "Blockbench was closed without saving. Do you want to recover the models?",
+	"message.recover_backup.recover": "Recover",
 	"message.screenshot.title": "Screenshot",
 	"message.screenshot.clipboard": "Clipboard",
 	"message.screenshot.right_click": "Right click or long press the screenshot to copy",