From da99cc76c5260bb526b489cc33da7b9e56d48941 Mon Sep 17 00:00:00 2001
From: Bu16a <147602417+Bu16a@users.noreply.github.com>
Date: Tue, 4 Mar 2025 19:17:37 +0500
Subject: [PATCH] Update index.js

---
 index.js | 180 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 176 insertions(+), 4 deletions(-)

diff --git a/index.js b/index.js
index 8635050..05678e1 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,5 @@
-const {getAllFilePathsWithExtension, readFile} = require('./fileSystem');
-const {readLine} = require('./console');
+const { getAllFilePathsWithExtension, readFile } = require('./fileSystem');
+const { readLine } = require('./console');
 
 const files = getFiles();
 
@@ -12,14 +12,186 @@ function getFiles() {
 }
 
 function processCommand(command) {
-    switch (command) {
+    const [commandName, argument] = command.split(' ');
+
+    switch (commandName) {
         case 'exit':
             process.exit(0);
             break;
+        case 'show-todos':
+            showTodos();
+            break;
+        case 'important':
+            showImportantTodos();
+            break;
+        case 'user':
+            if (argument) {
+                showTodosByUser(argument);
+            } else {
+                console.log('Not found');
+            }
+            break;
+        case 'sort':
+            if (argument === 'importance') {
+                const todos = getTodos();
+                const sortedTodos = sortByImportance(todos);
+                printTodos(sortedTodos);
+            } else if (argument === 'user') {
+                const todos = getTodos();
+                const sortedTodos = sortByUser(todos);
+                printTodos(sortedTodos);
+            } else if (argument === 'date') {
+                const todos = getTodos();
+                const sortedTodos = sortByDate(todos);
+                printTodos(sortedTodos);
+            } else {
+                console.log('wrong sort argument');
+            }
+            break;
+        case 'date':
+            if (argument) {
+                const todos = getTodos();
+                const filteredTodos = filterByDate(todos, argument);
+                printTodos(filteredTodos);
+            } else {
+                console.log('Not found');
+            }
+            break;
         default:
             console.log('wrong command');
             break;
     }
 }
 
-// TODO you can do it!
+function showTodos() {
+    const todos = getTodos();
+    printTodos(todos);
+}
+
+function showImportantTodos() {
+    const todos = getTodos();
+    const importantTodos = todos.filter(todo => todo.comment.includes('!'));
+    printTodos(importantTodos);
+}
+
+function showTodosByUser(username) {
+    const todos = getTodos();
+    const userTodos = todos.filter(todo => {
+        const comment = todo.comment;
+        const todoPrefix = "// TODO ";
+        const prefixLength = todoPrefix.length;
+        if (comment.startsWith(todoPrefix)) {
+            const semicolonIndex = comment.indexOf(';', prefixLength);
+            if (semicolonIndex !== -1) {
+                const extractedUsername = comment.slice(prefixLength, semicolonIndex).trim();
+                return extractedUsername.toLowerCase() === username.toLowerCase();
+            }
+        }
+        return false;
+    });
+
+    printTodos(userTodos);
+}
+
+function getTodos() {
+    const todos = [];
+
+    files.forEach(fileContent => {
+        const lines = fileContent.split('\n');
+
+        lines.forEach((line, index) => {
+            const todoIndex = line.indexOf('// TODO');
+            if (todoIndex !== -1) {
+                const comment = line.slice(todoIndex).trim(); 
+                todos.push({
+                    comment: comment,
+                    lineNumber: index + 1
+                });
+            }
+        });
+    });
+
+    return todos;
+}
+
+function printTodos(todos) {
+    if (todos.length === 0) {
+        console.log('Not found.');
+    } else {
+        todos.forEach(todo => {
+            console.log(`Line ${todo.lineNumber}: ${todo.comment}`);
+        });
+    }
+}
+
+function sortByImportance(todos) {
+    return todos.sort((a, b) => {
+        const aImportance = (a.comment.includes('!') || []).length;
+        const bImportance = (b.comment.includes('!') || []).length;
+        return bImportance - aImportance;
+    });
+}
+
+function sortByUser(todos) {
+    const named = [];
+    const unnamed = [];
+
+    todos.forEach(todo => {
+        const username = extractUsername(todo.comment);
+        if (username && !username.toLowerCase().includes("anonymous developer")) {
+            named.push(todo);
+        } else {
+            unnamed.push(todo);
+        }
+    });
+
+    named.sort((a, b) => {
+        const usernameA = extractUsername(a.comment).toLowerCase();
+        const usernameB = extractUsername(b.comment).toLowerCase();
+        return usernameA.localeCompare(usernameB);
+    });
+
+    return named.concat(unnamed);
+}
+
+function extractUsername(comment) {
+    const todoPrefix = "// TODO ";
+    const prefixLength = todoPrefix.length;
+    if (comment.startsWith(todoPrefix)) {
+        const semicolonIndex = comment.indexOf(';', prefixLength);
+        if (semicolonIndex !== -1) {
+            return comment.slice(prefixLength, semicolonIndex).trim();
+        }
+    }
+    return null;
+}
+
+function sortByDate(todos) {
+    return todos.sort((a, b) => {
+        const aDate = extractDate(a.comment);
+        const bDate = extractDate(b.comment);
+
+        if (!aDate && !bDate) return 0;
+        if (!aDate) return 1;
+        if (!bDate) return -1;
+
+        return bDate - aDate;
+    });
+}
+
+function extractDate(comment) {
+    const dateRegex = /(\d{4}(-\d{2}(-\d{2})?)?)/;
+    const match = comment.match(dateRegex);
+    if (match) {
+        return new Date(match[0]);
+    }
+    return null;
+}
+
+function filterByDate(todos, dateString) {
+    const date = new Date(dateString);
+    return todos.filter(todo => {
+        const todoDate = extractDate(todo.comment);
+        return todoDate && todoDate >= date;
+    });
+}