feature(user-menu) add Compare Directories (#220)

static/user-menu.js

@@ -20,6 +20,37 @@ module.exports = {
             CloudCmd,
         });
     },
+    'D - Compare directories': async ({DOM}) => {
+        const {
+            CurrentInfo,
+            getFilenames,
+            getCurrentByName,
+            selectFile,
+        } = DOM;
+        
+        const {
+            files,
+            filesPassive,
+            panel,
+            panelPassive,
+        } = CurrentInfo;
+        
+        const names = getFilenames(files);
+        const namesPassive = getFilenames(filesPassive);
+        
+        const selectedNames = compare(names, namesPassive);
+        const selectedNamesPassive = compare(namesPassive, names);
+        
+        selectNames(selectedNames, panel, {
+            selectFile,
+            getCurrentByName,
+        });
+        
+        selectNames(selectedNamesPassive, panelPassive, {
+            selectFile,
+            getCurrentByName,
+        });
+    },
 };
 
 async function createDefaultMenu({path, data, DOM, CloudCmd}) {
@@ -40,3 +71,23 @@ async function readDefaultMenu({prefix}) {
     return data;
 }
 
+function selectNames(names, panel, {selectFile, getCurrentByName}) {
+    for (const name of names) {
+        const file = getCurrentByName(name, panel);
+        selectFile(file);
+    }
+}
+
+function compare(a, b) {
+    const result = [];
+    
+    for (const el of a) {
+        if (b.includes(el))
+            continue;
+        
+        result.push(el);
+    }
+    
+    return result;
+}
+

static/user-menu.spec.js

@@ -8,6 +8,8 @@ const wraptile = require('wraptile');
 
 const defaultMenu = require('./user-menu');
 
+const {create} = autoGlobals;
+
 const {_data} = defaultMenu;
 const reject = wraptile(async (a) => {
     throw Error(a);
@@ -107,6 +109,21 @@ test('cloudcmd: static: user menu: no EditFile.show', async (t) => {
     t.end();
 });
 
+test('cloudcmd: static: user menu: compare directories', async (t) => {
+    const name = 'D - Compare directories';
+    const DOM = getDOM();
+    const CloudCmd = getCloudCmd();
+    
+    await defaultMenu[name]({
+        DOM,
+        CloudCmd,
+    });
+    
+    const {files} = DOM.CurrentInfo.files;
+    t.ok(DOM.getFilenames.calledWith(files), 'should call getFilenames');
+    t.end();
+});
+
 function getDOM() {
     const IO = {
         write: stub(),
@@ -114,12 +131,18 @@ function getDOM() {
     
     const CurrentInfo = {
         dirPath: '/',
+        files: [],
+        filesPasive: [],
+        panel: create(),
+        panelPassive: create(),
     };
     
     return {
         IO,
         CurrentInfo,
         setCurrentByName: stub(),
+        getFilenames: stub().returns([]),
+        getCurrentByName: stub(),
         renameCurrent: stub(),
     };
 }