Горохов Денис

fileSystem.js

@@ -1,4 +1,5 @@
 const fs = require('fs');
+const path = require('path');
 
 // TODO PE; 2018-08-20; переименовать?
 function getAllFilePathsWithExtension(directoryPath, extension, filePaths) {
@@ -20,9 +21,15 @@ function readFile(filePath) {
     return fs.readFileSync(filePath, 'utf8'); // TODO Veronika; 2018-08-16; сделать кодировку настраиваемой
 }
 
+
+function getFileName(filePath) {
+    return path.basename(filePath);
+}
+
 // TODO Digi; 2018-09-21; Добавить функцию getFileName, которая по пути файла будет возвращать его имя. Воспользоваться модулем path из Node.js
 
 module.exports = {
     getAllFilePathsWithExtension,
     readFile,
+    getFileName
 };

index.js

@@ -1,18 +1,167 @@
-const {getAllFilePathsWithExtension, readFile} = require('./fileSystem');
-const {readLine} = require('./console');
+const { getAllFilePathsWithExtension, readFile, getFileName } = require('./fileSystem');
+const { readLine } = require('./console');
 
-const files = getFiles();
+const currentDirectory = process.cwd();
+const filesPaths = getFilesPaths();
+const todoPattern = new RegExp('// TODO (?:(?<user>[_A-Za-z0-9 ]*); ?)?(?:(?<date>.*); ?)?(?<comment>.*)', 'g');
 
 console.log('Please, write your command!');
 readLine(processCommand);
 
-function getFiles() {
-    const filePaths = getAllFilePathsWithExtension(process.cwd(), 'js');
-    return filePaths.map(path => readFile(path));
+function sum(args) {
+    return args.reduce((arg, nextArg) => arg + nextArg);
+}
+
+function Todo(username, date, comment, importance, fileName) {
+    this.user = username;
+    this.date = date;
+    this.comment = comment;
+    this.importance = importance;
+    this.file = fileName;
+
+    this.formatImportance = function () {
+        return this.importance ? '!' : ' ';
+    }
+
+    this.formatUser = function () {
+        return this.user || '';
+    }
+
+    this.formatDate = function () {
+        return this.date ? this.date.toLocaleDateString('ru').replaceAll('.', '-') : '';
+    }
+}
+
+function TableTodoFormatter() {
+    const columnsMaxSizes = [1, 10, 10, 50];
+    const verticalSeparator = '  |  ';
+    this.columnsSizes = [];
+
+    this.format = function (todos) {
+        this.columnsSizes = this.getColumnsSizes(todos);
+        const header = ['!', 'user', 'date', 'comment', 'file'];
+        const tableRows = [this.formatProps(header)];
+        const tableWidth = sum(this.columnsSizes) + columnsMaxSizes.length * verticalSeparator.length;
+        const horizontalLine = '-'.repeat(tableWidth);
+        tableRows.push(horizontalLine);
+        todos.forEach(todo => {
+                const properties = [todo.formatImportance(), todo.formatUser(), todo.formatDate(), todo.comment, todo.file];
+                tableRows.push(this.formatProps(properties))
+            }
+        );
+        tableRows.push(horizontalLine);
+        return tableRows;
+    }
+
+    this.getColumnsSizes = function (todos) {
+        return [columnsMaxSizes[0],
+            Math.min(Math.max(...todos.map(todo => todo.formatUser().length), columnsMaxSizes[1])),
+            columnsMaxSizes[2],
+            Math.min(Math.max(...todos.map(todo => todo.comment.length)), columnsMaxSizes[3]),
+            Math.max(...todos.map(todo => todo.file ? todo.file.length : 0))];
+    }
+
+    this.formatProps = function (properties) {
+        const formattedProps = [];
+        for (let index = 0; index < properties.length; index++) {
+            formattedProps.push(regulateLength(properties[index], this.columnsSizes[index]));
+        }
+        return `${formattedProps.join(verticalSeparator)}`;
+    }
+
+    function regulateLength(str, maxLength) {
+        return str.length > maxLength ? truncate(str, maxLength) : str.padEnd(maxLength);
+    }
+
+    function truncate(str, maxLength) {
+        return str.length > maxLength ? `${str.slice(0, maxLength - 3)}...` : str;
+    }
+}
+
+function getFilesPaths() {
+    return getAllFilePathsWithExtension(currentDirectory, 'js');
+}
+
+function createTodo(match, fileName) {
+    return new Todo(match.groups.user,
+        match.groups.date ? new Date(match.groups.date) : undefined,
+        match.groups.comment,
+        (match.groups.comment.match(/!/g) || []).length,
+        fileName
+    );
+}
+
+function getAllTodos() {
+    const todos = [];
+    filesPaths.forEach(filePath => {
+        const file = readFile(filePath);
+        const matches = [...file.matchAll(todoPattern)];
+        const fileName = getFileName(filePath);
+        const validTodos = matches.map(match => createTodo(match, fileName)).filter(todo => todo.comment);
+        todos.push(...validTodos);
+    });
+    return todos;
+}
+
+function getImportantTodos(todos = getAllTodos()) {
+    return todos.filter(todo => todo.importance > 0);
+}
+
+function selectByUser(username, todos = getAllTodos()) {
+    return todos.filter(todo => userComparer(todo.user, username) === 0);
+}
+
+function sortByImportance(todos = getAllTodos()) {
+    return sortBy(todos, (todo, nextTodo) => nextTodo.importance - todo.importance);
+}
+
+function sortByUser(todos = getAllTodos()) {
+    return sortBy(todos, (todo, nextTodo) => userComparer(todo.user, nextTodo.user));
+}
+
+function sortByDate(todos = getAllTodos()) {
+    return sortBy(todos, (todo, nextTodo) => nextTodo.date - todo.date);
+}
+
+function sortBy(todos, comparer) {
+    return todos.sort(comparer);
+}
+
+function userComparer(username, nextUsername) {
+    return username === undefined
+        ? 1 : nextUsername === undefined
+            ? -1 : username.toLowerCase().localeCompare(nextUsername.toLowerCase());
+}
+
+function selectTodosAfter(dateInfo, todos = getAllTodos()) {
+    const date = new Date(dateInfo);
+    return todos.filter(todo => todo.date && todo.date >= date);
+}
+
+function printTodos(todos) {
+    const tableFormatter = new TableTodoFormatter();
+    tableFormatter.format(todos).forEach(row => console.log(row));
 }
 
 function processCommand(command) {
-    switch (command) {
+    const [commandName, option] = command.split(' ');
+
+    switch (commandName) {
+        case 'show':
+            printTodos(getAllTodos());
+            break;
+        case 'important':
+            printTodos(getImportantTodos());
+            break;
+        case 'user':
+            printTodos(selectByUser(option));
+            break;
+        case 'sort':
+            processSortCommand(option);
+            break;
+        case 'date':
+            printTodos(selectTodosAfter(option));
+            break
         case 'exit':
             process.exit(0);
             break;
@@ -22,4 +171,21 @@ function processCommand(command) {
     }
 }
 
+function processSortCommand(option) {
+    switch (option) {
+        case 'importance':
+            printTodos(sortByImportance());
+            break;
+        case 'user':
+            printTodos(sortByUser());
+            break;
+        case 'date':
+            printTodos(sortByDate());
+            break;
+        default:
+            console.log('wrong command');
+            break;
+    }
+}
+
 // TODO you can do it!