diff --git a/index.js b/index.js
index 8635050..b7b6f8c 100644
--- a/index.js
+++ b/index.js
@@ -12,14 +12,129 @@ function getFiles() {
 }
 
 function processCommand(command) {
-    switch (command) {
+    let commands = command.split(" ");
+    switch (commands[0]) {
         case 'exit':
             process.exit(0);
             break;
+        case 'show':
+            console.log(getTasks());
+            break;
+        case 'important':
+            console.log(getTasks().filter(elem => elem.includes('!')));
+            break;
+        case 'user':
+            console.log(getTasksByUser(commands[1]));
+            break;
+        case 'sort':
+            console.log(sortTasks(commands[1]))
+            break;
+        case 'date':
+            console.log(getTasksByDate(commands[1]))
+            break;
         default:
             console.log('wrong command');
             break;
     }
 }
 
-// TODO you can do it!
+function getTasks () 
+{
+    let tasks = new Array();
+    let temp = [];
+
+    files.forEach(element =>
+    {
+        temp = element.split('\r\n').filter(element => element.includes('// TODO '));
+        temp.forEach(elem =>
+        {
+            let i = elem.indexOf('// TODO ');
+            if (i === 0) tasks.push(elem); 
+            else if (elem[i - 1] !== '\'')
+                tasks.push(elem.substring(i));
+        });
+    });
+    return tasks;
+}
+
+function getTasksByUser (parameter)
+{
+    let tasks = new Array();
+    getTasks().forEach (elem => 
+    {
+        let s = elem.slice(8).split(';');
+        if ((s[0].toLowerCase().trim() === parameter.toLowerCase()) && (s.length != 1))
+            tasks.push(elem);
+    });
+    return tasks;
+}
+
+function sortTasks (parameter)
+{
+    let sortedTasks = getTasks();
+    sortedTasks.sort(function(a, b)
+    {
+        if (parameter === 'importance')
+        {
+            let m = a.split('').filter(e => e == '!').length;
+            let n = b.split('').filter(e => e == '!').length;
+            if (n > m) return 1;
+            if (n == m) return 0;
+            if (n < m) return -1;
+        }
+        let p = a.slice(8).split(';');
+        let q = b.slice(8).split(';');
+        if (p.length == 1 || q.length == 1) return 1;
+        if (parameter === 'user')
+        {
+            let u = p[0].toLowerCase().trim();
+            let v = q[0].toLowerCase().trim();
+            if (u > v) return 1;
+            if (u === v) return 0;
+            if (u < v) return -1;
+        }
+        if (parameter === 'date')
+        {
+            let u = p[1].trim();
+            let v = q[1].trim();
+            if (v > u) return 1;
+            if (v === u) return 0;
+            if (v < u) return -1;
+        }
+    });
+    return sortedTasks;
+}
+
+function getTasksByDate (parameter)
+{
+    let tasks = new Array();
+    let date = [];
+    date[0] = parameter;
+    if(parameter.includes("-"))
+        date = parameter.split('-');
+    getTasks().forEach(elem =>
+    {
+        let taskParts = elem.slice(8).split(';');
+        if (taskParts.length > 2)
+        {
+            if (taskParts[1] != '')
+            {
+                let s = taskParts[1].replace(" ", '').split('-');
+                if (date[0] === s[0])
+                {
+                    if (date.length == 1)
+                        tasks.push(elem);
+                    else if (date[1] === s[1])
+                    {
+                        if (date.length == 2)
+                            tasks.push(elem);
+                        else if (date[2] === s[2])
+                            tasks.push(elem);
+                    }
+                }
+            }
+        }
+    });
+    return tasks;
+}
+// TODO you can do it!
\ No newline at end of file