Edited: docker-compose.yaml

.docker/nginx.conf

@@ -0,0 +1,53 @@
+# User and worker process settings
+user www-data;
+worker_processes auto;
+pid /run/nginx.pid;
+
+events {
+    worker_connections 1024;
+}
+
+http {
+    # General settings
+    sendfile on;
+    tcp_nopush on;
+    tcp_nodelay on;
+    keepalive_timeout 65;
+    types_hash_max_size 2048;
+
+    include /etc/nginx/mime.types;
+    default_type application/octet-stream;
+
+    # Logging
+    access_log /var/log/nginx/access.log;
+    error_log /var/log/nginx/error.log;
+
+    # Gzip compression
+    gzip on;
+    gzip_disable "msie6";
+
+    # Server configuration
+    server {
+        listen 80;
+        server_name localhost;
+
+        root /var/www/html/public;
+        index index.php index.html;
+
+        location / {
+            try_files $uri $uri/ /index.php?$query_string;
+        }
+
+        location ~ \\.php$ {
+            include fastcgi_params;
+            fastcgi_pass 127.0.0.1:9000;
+            fastcgi_index index.php;
+            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+        }
+
+        location ~ /\.ht {
+            deny all;
+        }
+    }
+}
+

.dockerignore

@@ -0,0 +1,22 @@
+.git
+.gitignore
+
+storage/logs/*
+!storage/logs/.gitignore
+
+Dockerfile
+docker-compose.yaml
+
+*.swp
+*.swo
+*.idea/
+*.vscode/
+*.DS_Store
+
+# Exclude sensitive config files (uncomment if you don't want to include environment config)
+# config/environment.php
+
+README.md
+TODO.md
+LICENSE
+

.gitignore

@@ -0,0 +1 @@
+*.swp

Dockerfile

@@ -0,0 +1,18 @@
+FROM php:8.2-fpm-alpine
+
+WORKDIR /var/www/html
+
+RUN apk add --no-cache nginx curl \
+  && docker-php-ext-install mysqli
+
+COPY . /var/www/html
+
+RUN chown -R www-data:www-data /var/www/html \
+  && chmod -R 755 /var/www/html
+
+COPY .docker/nginx.conf /etc/nginx/nginx.conf
+
+EXPOSE 80
+
+CMD php-fpm & nginx -g "daemon off;"
+

README.md

@@ -1,3 +1,55 @@
-# habit-tracker
+# Habit Tracker
+
+An app for tracking habits and motivation to achieve personal goals
+
+## Used technologies
+- **Frontend:** HTML, CSS, JavaScript
+- **Backend:** PHP (OOP)
+- **Database:** MariaDB
+
+## How to build
+
+### Build using docker
+Run the container using docker-compose
+```bash
+docker-compose up
+```
+
+The app should be available at http://localhost:8000
+
+PhpMyAdmin should be available at http://localhost:8080
+
+### Build manually
+1. Clone the repo
+```bash
+   git clone https://git.filiprojek.cz/fr/habit-tracker.git
+```
+
+2. Create `config/environment.php`
+- It should have following structure:
+```php
+<?php
+
+define('DB_HOST', 'your db host');
+define('DB_USER', 'your db username'); 
+define('DB_PASS', 'your db password');
+define('DB_NAME', 'your db name'); 
+```
+- For the database, you can use included `docker-compose.yaml` which have both MariaDB and PhpMyAdmin
+
+3. Start an local web server
+- You can use php's integrated server by running this:
+```bash
+php -S localhost:8000 -t ./public
+```
+- You can use any host and any port you want.
+
+## Usage
+1. Register and Login to the app.
+2. Add your habits.
+3. Mark your habits when you're done doing them.
+4. Earn point and unlock achievements by completing you're habits!
+
+## Licence
+This project is licensed under GPL3.0 and later. More information is availabe in `LICENSE` file.
 
-An app for tracking habits and motivation to achieve personal goals.

TODO.md

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+# TODO
+
+## Auth and User stuff
+- [x] signup
+- [x] signin
+- [ ] edit user data - change password, mail...
+
+## Core of the app
+- [ ] header and navbar
+- [ ] dashboard
+  - [x] css
+  - [ ] its just plain
+  - [ ] graphs
+- [x] Habits list
+  - [ ] css
+- [ ] Habits create
+  - [ ] validate cron input
+- [ ] Habits track

app/controllers/AuthController.php

@@ -0,0 +1,85 @@
+<?php
+
+class AuthController extends Controller  {
+    public function signin() {
+        if($_SERVER['REQUEST_METHOD'] === 'POST') {
+            $email = $_POST['email'] ?? '';
+            $password = $_POST['password'] ?? '';
+
+            $validator = new Validator();
+            $validator->required('email', $email);
+            $validator->email('email', $email);
+            $validator->required('password', $password);
+
+            if (!$validator->passes()) {
+                $this->view('auth/signup', [
+                    'error' => 'Please correct the errors below.',
+                    'validationErrors' => $validator->errors() ?: [],
+                ]);
+                return;
+            }
+
+            $user = new User();
+            $result = $user->login($email, $password);
+
+            if($result === true) {
+                $this->redirect('/dashboard');
+            } else {
+                $this->view('auth/signin', ['error' => $result], 'noheader');
+            }
+        } else {
+            $this->view('auth/signin', ['title' => 'Log In'], 'noheader');
+        }
+    }
+
+    public function signup() {
+        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+            $username = $_POST['username'] ?? '';
+            $email = $_POST['email'] ?? '';
+            $password = $_POST['password'] ?? '';
+            $password2 = $_POST['password-2'] ?? '';
+
+            $validator = new Validator();
+            $validator->required('username', $username);
+            $validator->email('email', $email);
+            $validator->required('password', $password);
+            $validator->minLength('password', $password, 8);
+            $validator->alphanumeric('password', $password);
+
+            if ($password !== $password2) {
+                $validator->errors()['password_confirmation'] = 'Passwords do not match.';
+            }
+
+            if (!$validator->passes()) {
+                $this->view('auth/signup', [
+                    'error' => 'Please correct the errors below.',
+                    'validationErrors' => $validator->errors() ?: [],
+                ], 'noheader');
+                return;
+            }
+
+            $user = new User();
+            $result = $user->register($username, $email, $password);
+
+            if ($result === true) {
+                $this->redirect('/auth/signin');
+            } else {
+                $this->view('auth/signup', [
+                    'error' => $result,
+                    'validationErrors' => [],
+                ], 'noheader');
+            }
+        } else {
+            $this->view('auth/signup', [
+                'title' => 'Register',
+                'validationErrors' => [],
+            ], 'noheader');
+        }
+    }
+
+    public function logout() {
+        session_unset(); 
+        session_destroy();
+        $this->redirect('/auth/signin');
+    }
+}

app/controllers/DashboardController.php

@@ -0,0 +1,16 @@
+<?php
+class DashboardController extends Controller {
+    public function index() {
+        $habit = new Habit();
+        $habits = $habit->getHabitsByUser($_SESSION['user']['id']);
+
+        $this->view('dashboard/index', [
+            'title' => 'Dashboard',
+            'habits' => $habits,
+        ]);
+    }
+
+    public function reroute(){
+        $this->redirect('/dashboard');
+    }
+}

app/controllers/HabitController.php

@@ -0,0 +1,57 @@
+<?php
+
+class HabitController extends Controller {
+    public function index() {
+        $habit = new Habit();
+        $habits = $habit->getHabitsByUser($_SESSION['user']['id']);
+        $this->view('habits/index', ['title' => 'Habits', 'habits' => $habits]);
+    }
+
+    public function create() {
+        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+            $name = $_POST['name'] ?? '';
+            $frequency = $_POST['frequency'] ?? 'Daily';
+            $customFrequency = null;
+
+            if (empty($name)) {
+                $this->view('habits/create', ['error' => 'Habit name is required.']);
+                return;
+            }
+
+            if ($frequency === 'Custom') {
+                $daysOfWeek = $_POST['days_of_week'] ?? [];
+                $daysOfMonth = $_POST['days_of_month'] ?? '*';
+                $months = $_POST['months'] ?? '*';
+
+                // Combine into crontab-like string
+                $customFrequency = implode(',', $daysOfWeek) . " $daysOfMonth $months";
+            }
+
+            $habit = new Habit();
+            $result = $habit->create([
+                'name' => $name,
+                'frequency' => $frequency,
+                'custom_frequency' => $customFrequency,
+                'reward_points' => intval($_POST['difficulty'] ?? 1),
+                'user_id' => $_SESSION['user']['id'],
+            ]);
+
+            if ($result) {
+                $this->redirect('/habits');
+            } else {
+                $this->view('habits/create', ['error' => 'Failed to create habit.']);
+            }
+        } else {
+            $this->view('habits/create', ['title' => 'Create Habit']);
+        }
+    }
+
+
+    public function edit() {
+        // Edit habit (to be implemented later)
+    }
+
+    public function delete() {
+        // Delete habit (to be implemented later)
+    }
+}

app/controllers/HomeController.php

@@ -0,0 +1,18 @@
+<?php
+
+class HomeController extends Controller {
+    public function index() {
+        $data = [
+            'title' => 'Home'
+        ];
+        $this->view('home/index', $data);
+    }
+    
+    public function home() {
+        $this->index();
+    }
+
+    public function dashboard() {
+        $this->view("dashboard/index");
+    }
+}

app/models/Habit.php

@@ -0,0 +1,46 @@
+<?php
+
+class Habit {
+    private $db;
+
+    public function __construct() {
+        $this->db = Database::getInstance()->getConnection();
+    }
+
+    public function create($data) {
+        $stmt = $this->db->prepare("
+            INSERT INTO habits (user_id, title, frequency, custom_frequency, reward_points, created_at)
+            VALUES (?, ?, ?, ?, ?, NOW())
+        ");
+
+        $stmt->bind_param(
+            "isssi", // Bind types: int, string, string, string, int
+            $data['user_id'],
+            $data['name'],
+            $data['frequency'],
+            $data['custom_frequency'], // Bind the custom_frequency field
+            $data['reward_points']
+        );
+
+        if ($stmt->execute()) {
+            return true;
+        } else {
+            error_log("Failed to create habit: " . $stmt->error);
+            return false;
+        }
+    }
+
+    public function getHabitsByUser($userId) {
+        $stmt = $this->db->prepare("SELECT id, title, frequency, custom_frequency, reward_points, created_at FROM habits WHERE user_id = ?");
+        $stmt->bind_param("i", $userId);
+        $stmt->execute();
+        $result = $stmt->get_result();
+
+        $habits = [];
+        while ($row = $result->fetch_assoc()) {
+            $habits[] = $row;
+        }
+        
+        return $habits;
+    }
+}

app/models/User.php

@@ -0,0 +1,65 @@
+<?php
+
+require_once '../core/Database.php';
+
+class User {
+    private $db;
+
+    public function __construct() {
+        $this->db = Database::getInstance()->getConnection();
+
+        if ($this->db) {
+            error_log("Database connection established successfully.");
+        } else {
+            error_log("Failed to connect to the database.");
+        }
+    }
+
+    public function register($username, $email, $password) {
+        // Check if email already exists
+        $stmt = $this->db->prepare("SELECT id FROM users WHERE email = ?");
+        $stmt->bind_param("s", $email);
+        $stmt->execute();
+        $result = $stmt->get_result();
+        $stmt->close();
+
+        if ($result->num_rows > 0) {
+            return "Email is already registered";
+        }
+
+        $hashedPassword = password_hash($password, PASSWORD_BCRYPT);
+
+        $stmt = $this->db->prepare("INSERT INTO users (username, email, password, points, created_at) VALUES (?, ?, ?, 0, NOW())");
+        $stmt->bind_param("sss", $username, $email, $hashedPassword);
+
+        if ($stmt->execute()) {
+            return true;
+        } else {
+            return "Error: " . $stmt->error;
+        }
+    }
+
+    public function login($email, $password) {
+        $hashedPassword = password_hash($password, PASSWORD_BCRYPT);
+
+        $stmt = $this->db->prepare("SELECT id, username, password FROM users WHERE email = ?");
+        $stmt->bind_param("s", $email);
+        $stmt->execute();
+        $result = $stmt->get_result();
+        $stmt->close();
+
+        if ($result->num_rows === 1) {
+            $user = $result->fetch_assoc();
+            if (password_verify($password, $user['password'])) {
+                $_SESSION['user'] = [
+                    'id' => $user['id'],
+                    'username' => $user['username'],
+                    'email' => $email,
+                ];
+                return true;
+            } 
+        } 
+
+        return "Incorrect username or password.";
+    }
+}

app/views/auth/signin.php

@@ -0,0 +1,33 @@
+<link rel="stylesheet" href="/css/login.css">
+<link rel="stylesheet" href="/css/form.css">
+<section class="form signin">
+    <div class="header-form">
+        <img src="/img/logo.jpg" alt="Habit Tracker Logo">
+        <h1>Sign in to Habit Tracker</h1>
+    </div>
+
+    <?php if ($this->get('error')): ?>
+        <div class="error"><?= $this->get('error') ?></div>
+    <?php endif; ?>
+
+    <form action="/auth/signin" method="POST">
+        <label for="email">Email</label>
+        <input type="email" name="email" id="email" value="<?= htmlspecialchars($_POST['email'] ?? '') ?>" required>
+        <?php if (isset($this->get('validationErrors')['email'])): ?>
+            <small class="error"><?= $this->get('validationErrors')['email'] ?></small>
+        <?php endif; ?>
+
+        <label for="password">Password</label>
+        <input type="password" name="password" id="password" required>
+        <?php if (isset($this->get('validationErrors')['password'])): ?>
+            <small class="error"><?= $this->get('validationErrors')['password'] ?></small>
+        <?php endif; ?>
+
+        <input type="submit" value="Sign In">
+    </form>
+
+    <div class="bordered">
+        <p>New to Habit Tracker?</p>
+        <a href="/auth/signup">Create an account</a>
+    </div>
+</section>

app/views/auth/signup.php

@@ -0,0 +1,45 @@
+<link rel="stylesheet" href="/css/login.css">
+<link rel="stylesheet" href="/css/form.css">
+<section class="form signup">
+    <div class="header-form">
+        <img src="/img/logo.jpg" alt="Habit Tracker Logo">
+        <h1>Sign up to Habit Tracker</h1>
+    </div>
+
+    <?php if ($this->get('error')): ?>
+        <div class="error"><?= $this->get('error') ?></div>
+    <?php endif; ?>
+
+    <form action="/auth/signup" method="POST">
+        <label for="username">Username</label>
+        <input type="text" name="username" id="username" value="<?= htmlspecialchars($_POST['username'] ?? '') ?>" required>
+        <?php if (isset($this->get('validationErrors')['username'])): ?>
+            <small class="error"><?= $this->get('validationErrors')['username'] ?></small>
+        <?php endif; ?>
+
+        <label for="email">Email</label>
+        <input type="email" name="email" id="email" value="<?= htmlspecialchars($_POST['email'] ?? '') ?>" required>
+        <?php if (isset($this->get('validationErrors')['email'])): ?>
+            <small class="error"><?= $this->get('validationErrors')['email'] ?></small>
+        <?php endif; ?>
+
+        <label for="password">Password</label>
+        <input type="password" name="password" id="password" required>
+        <?php if (isset($this->get('validationErrors')['password'])): ?>
+            <small class="error"><?= $this->get('validationErrors')['password'] ?></small>
+        <?php endif; ?>
+
+        <label for="password-2">Password again</label>
+        <input type="password" name="password-2" id="password-2" required>
+        <?php if (isset($this->get('validationErrors')['password_confirmation'])): ?>
+            <small class="error"><?= $this->get('validationErrors')['password_confirmation'] ?></small>
+        <?php endif; ?>
+
+        <input type="submit" value="Sign Up">
+    </form>
+
+    <div class="bordered">
+        <p>Already have an account?</p>
+        <a href="/auth/signin">Sign in</a>
+    </div>
+</section>

app/views/dashboard/index.php

@@ -0,0 +1,47 @@
+<link rel="stylesheet" href="/css/dashboard.css">
+
+<section class="dashboard">
+    <h1>Welcome, <?= htmlspecialchars($_SESSION['user']['username']) ?>!</h1>
+    <div>
+        <a href="/habits/create" class="btn-green">Create new habit!</a>
+        <a href="/habits" class="btn-primary">List all habits</a>
+    </div>
+    <div class="card-wrapper">
+        <section class="card upcoming">
+            <h2>Upcoming</h2>
+            <div class="habit">
+                <b>Habit Title</b>
+                <p>Frequency</p>
+                <p>Reward points</p>
+            </div>
+        </section>
+
+        <section class="card recent">
+            <h2>Recent</h2>
+            <div class="habit">
+                <b>Habit Title</b>
+                <p>Frequency</p>
+                <p>Reward points</p>
+            </div>
+        </section>
+
+        <section class="card missed">
+            <h2>Missed</h2>
+            <div class="habit">
+                <b>Habit Title</b>
+                <p>Frequency</p>
+                <p>Reward points</p>
+            </div>
+        </section>
+
+        <section class="card history-graph">
+            <h2>Graph of History</h2>
+        </section>
+
+        <section class="card streak">
+            <h2>Streak</h2>
+            <p>You're current streak is 123 days</p>
+            <p>Good job!</p>
+        </section>
+    </div>
+</section>

app/views/errors/404.php

@@ -0,0 +1,13 @@
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Habit Tracker | Error 494</title>
+</head>
+<body>
+    <h1>Error 404 - Page not found</h1>
+    <a href="/">Go back home</a>
+</body>
+</html>

app/views/habits/create.php

@@ -0,0 +1,70 @@
+<link rel="stylesheet" href="/css/form.css">
+<link rel="stylesheet" href="/css/habits_create.css">
+<section class="form habit-create">
+    <h1 class="header-form"><?= $this->get('title', 'Create Habit') ?></h1>
+
+    <?php if ($this->get('error')): ?>
+        <div class="error" style="color: red; margin-bottom: 1rem;">
+            <?= htmlspecialchars($this->get('error')) ?>
+        </div>
+    <?php endif; ?>
+
+    <form method="POST" action="/habits/create">
+        <label for="name">Habit Name</label>
+        <input type="text" name="name" id="name" required value="<?= htmlspecialchars($_POST['name'] ?? '') ?>">
+
+        <label for="frequency">Frequency</label>
+        <select name="frequency" id="frequency" onchange="toggleCustomFrequency(this.value)">
+            <option value="Daily">Daily</option>
+            <option value="Weekly">Weekly</option>
+            <option value="Custom">Custom</option>
+        </select>
+
+        <div id="custom-frequency" style="display: none;">
+            <label id="lbl_dow">Days of the Week</label>
+            <div class="dow_chb_wrapper">
+                <label for="dow_mon">Monday</label>
+                <input type="checkbox" name="days_of_week[]" id="dow_mon" value="1">
+            </div>
+            <div class="dow_chb_wrapper">
+                <label for="dow_tue">Tuesday</label>
+                <input type="checkbox" name="days_of_week[]" id="dow_tue" value="2">
+            </div>
+            <div class="dow_chb_wrapper">
+                <label for="dow_wed">Wednesday</label>
+                <input type="checkbox" name="days_of_week[]" id="dow_wed" value="3">
+            </div>
+            <div class="dow_chb_wrapper">
+                <label for="dow_thu">Thursday</label>
+                <input type="checkbox" name="days_of_week[]" id="dow_thu" value="4">
+            </div>
+            <div class="dow_chb_wrapper">
+                <label for="dow_fri">Friday</label>
+                <input type="checkbox" name="days_of_week[]" id="dow_fri" value="5">
+            </div>
+            <div class="dow_chb_wrapper">
+                <label for="dow_sat">Saturday</label>
+                <input type="checkbox" name="days_of_week[]" id="dow_sat" value="6">
+            </div>
+            <div class="dow_chb_wrapper">
+                <label for="dow_sun">Sunday</label>
+                <input type="checkbox" name="days_of_week[]" id="dow_sun" value="7">
+            </div>
+
+            <label for="days_of_month" id="lbl_dom">Days of the Month</label>
+            <input type="text" name="days_of_month" id="days_of_month" placeholder="1,15 (comma-separated)">
+
+            <label for="months">Months</label>
+            <input type="text" name="months" id="months" placeholder="1,7,12 (comma-separated)">
+        </div>
+
+        <input type="submit" value="Create Habit">
+    </form>
+</section>
+
+<script>
+function toggleCustomFrequency(value) {
+    const customFrequencyDiv = document.getElementById('custom-frequency');
+    customFrequencyDiv.style.display = value === 'Custom' ? 'flex' : 'none';
+}
+</script>

app/views/habits/index.php

@@ -0,0 +1,24 @@
+<link rel="stylesheet" href="/css/habits_dashboard.css">
+<section class="habits">
+    <?php if (empty($this->get('habits'))): ?>
+        <p>No habits yet. <a href="/habits/create">Create your first habit</a>.</p>
+    <?php else: ?>
+        <div class="habits-wrapper">
+        <?php foreach ($this->get('habits') as $habit): ?>
+            <div class="habit bordered">
+                <b><?= htmlspecialchars($habit['title']) ?></b>
+                <p>Frequency: <?= htmlspecialchars($habit['frequency']) ?></p>
+                <?php if (isset($habit['custom_frequency'])): ?>
+                    <p><?= htmlspecialchars($habit['custom_frequency'] ?? 'N/A') ?></p>
+                <?php endif; ?>
+                    <p><?= htmlspecialchars($habit['reward_points']) ?></p>
+                    <p><?= htmlspecialchars($habit['created_at']) ?></p>
+                    <a href="/habits/done">Mark as done</a> |
+                    <a href="/habits/edit?id=<?= $habit['id'] ?>">Edit</a> |
+                    <a href="/habits/delete?id=<?= $habit['id'] ?>" onclick="return confirm('Are you sure you want to delete this habit?')">Delete</a>
+            </div>
+        <?php endforeach; ?>
+        </div>
+        <a href="/habits/create" class="btn-green">Create new habit!</a>
+    <?php endif; ?>
+</section>

app/views/home/index.php

@@ -0,0 +1,4 @@
+<div>
+    <h1>Welcome to Habit Tracker!</h1>
+    <p>Track your habits and achieve your goals.</p>
+</div>

app/views/layouts/base.php

@@ -0,0 +1,35 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="author" content="Filip Rojek | http://filiprojek.cz">
+    <meta name="email" content="webmaster(@)fofrweb.com">
+    <meta name="copyright" content="(c) filiprojek.cz">
+    <title>Habit Tracker | <?= $data['title'] ?></title>
+    <link rel="stylesheet" href="/css/main.css">
+    <link rel="stylesheet" href="/css/global.css">
+    <link rel="stylesheet" href="/css/vars.css">
+    <link rel="stylesheet" href="/css/header.css">
+    <link rel="icon" type="image/x-icon" href="/img/favicon.ico">
+  </head>
+  <body>
+    <header>
+      <div id="hd-left">
+        <a href="/"><img src="/img/logo.jpg" alt="home"></a>
+        <label><?= $data['title'] ?></label>
+      </div>
+      <div id="hd-right">
+        <?php if (!isset($_SESSION['user'])): ?>
+        <a href="/auth/signin">Log In</a>
+        <a href="/auth/signup">Sign Up</a>
+        <?php else: ?>
+        <a href="/auth/logout" class="btn-secondary">Sign out</a>
+        <?php endif; ?>
+      </div>
+    </header>
+    <main class="content">
+      <?= $content ?>
+    </main>
+  </body>
+</html>

app/views/layouts/noheader.php

@@ -0,0 +1,20 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="author" content="Filip Rojek | http://filiprojek.cz">
+    <meta name="email" content="webmaster(@)fofrweb.com">
+    <meta name="copyright" content="(c) filiprojek.cz">
+    <title>Habit Tracker | <?= $data['title'] ?></title>
+    <link rel="stylesheet" href="/css/main.css">
+    <link rel="stylesheet" href="/css/global.css">
+    <link rel="stylesheet" href="/css/vars.css">
+    <link rel="icon" type="image/x-icon" href="/img/favicon.ico">
+  </head>
+  <body>
+    <main class="content">
+      <?= $content ?>
+    </main>
+  </body>
+</html>

config/.gitignore

@@ -0,0 +1 @@
+environment.php

config/environment.php.example

@@ -0,0 +1,6 @@
+<?php
+
+define('DB_HOST', '0.0.0.0');
+define('DB_NAME', 'habit_tracker'); 
+define('DB_USER', 'username'); 
+define('DB_PASS', 'password');

core/Controller.php

@@ -0,0 +1,23 @@
+<?php
+class Controller {
+    /**
+     * Redirect to a given URL
+     *
+     * @param string $url
+     */
+    public function redirect($url) {
+        header("Location: $url");
+        exit();
+    }
+
+    /**
+     * Render a view
+     *
+     * @param string $viewName
+     * @param array $data
+     */
+    public function view($viewName, $data = [], $layout = "base") {
+        $view = new View();
+        $view->render($viewName, $data, $layout);
+    }
+}

core/Database.php

@@ -0,0 +1,116 @@
+<?php
+
+class Database {
+    private static $instance = null;
+    private $connection;
+
+    private function __construct() {
+        $this->initializeConnection();
+        $this->checkAndCreateDatabase();
+        $this->checkAndCreateTables();
+    }
+
+    /**
+     * Get the singleton instance of the Database
+     * @return Database
+     */
+    public static function getInstance() {
+        if (self::$instance === null) {
+            self::$instance = new Database();
+        }
+
+        return self::$instance;
+    }
+
+    /**
+     * Get the active database connection
+     * @return mysqli
+     */
+    public function getConnection() {
+        return $this->connection;
+    }
+
+    /**
+     * Initialize the connection to the database
+     */
+    private function initializeConnection() {
+        $this->connection = new mysqli(DB_HOST, DB_USER, DB_PASS);
+
+        if ($this->connection->connect_error) {
+            die("Database connection failed: " . $this->connection->connect_error);
+        }
+    }
+
+    /**
+     * Check and create the database if it doesn't exist
+     */
+    private function checkAndCreateDatabase() {
+        $query = "CREATE DATABASE IF NOT EXISTS `" . DB_NAME . "`";
+        if (!$this->connection->query($query)) {
+            die("Failed to create or access database: " . $this->connection->error);
+        }
+
+        $this->connection->select_db(DB_NAME);
+    }
+
+    /**
+     * Check and create required tables if they don't exist
+     */
+    private function checkAndCreateTables() {
+        // Create users table
+        $usersTableQuery = "CREATE TABLE IF NOT EXISTS users (
+            id INT AUTO_INCREMENT PRIMARY KEY,
+            username VARCHAR(50) NOT NULL,
+            email VARCHAR(100) NOT NULL UNIQUE,
+            password VARCHAR(255) NOT NULL,
+            points INT DEFAULT 0,
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        ) ENGINE=InnoDB;";
+
+        if (!$this->connection->query($usersTableQuery)) {
+            die("Failed to create users table: " . $this->connection->error);
+        }
+
+        // Create progress table
+        $progressTableQuery = "CREATE TABLE IF NOT EXISTS progress (
+            id INT AUTO_INCREMENT PRIMARY KEY,
+            user_id INT NOT NULL,
+            habit_id INT NOT NULL,
+            date DATE NOT NULL,
+            status ENUM('Done', 'Pending') DEFAULT 'Pending',
+            FOREIGN KEY (user_id) REFERENCES users(id)
+        ) ENGINE=InnoDB;";
+
+        if (!$this->connection->query($progressTableQuery)) {
+            die("Failed to create progress table: " . $this->connection->error);
+        }
+
+        
+        // Create habits table
+        $habitsTableQuery = "CREATE TABLE IF NOT EXISTS habits (
+            id INT AUTO_INCREMENT PRIMARY KEY,
+            user_id INT NOT NULL,
+            title VARCHAR(100) NOT NULL,
+            frequency ENUM('Daily', 'Weekly', 'Custom') NOT NULL,
+            custom_frequency VARCHAR(255) DEFAULT NULL, -- Store crontab-like string
+            reward_points INT DEFAULT 1,
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        ) ENGINE=InnoDB;";
+
+        if (!$this->connection->query($habitsTableQuery)) {
+            die("Failed to create habits table: " . $this->connection->error);
+        }
+    }
+
+    /**
+     * Prevent cloning of the singleton instance
+     */
+    private function __clone() {}
+
+    /**
+     * Prevent unserialization of the singleton instance
+     */
+    public function __wakeup() {}
+
+}

core/Router.php

@@ -0,0 +1,84 @@
+<?php
+
+class Router {
+    private $routes = [];
+    private $middlewares = [];
+    private $groupPrefix = '';
+    private $groupMiddlewares = [];
+
+    /**
+     * Add a route with a specific action and optional middleware
+     * 
+     * @param string $route
+     * @param string $action
+     * @param array $middlewares Optional middlewares for this route
+     */
+    public function add($route, $action, $middlewares = []) {
+        $route = $this->groupPrefix . $route;
+        $middlewares = array_merge($this->groupMiddlewares, $middlewares);
+        $this->routes[$route] = ['action' => $action, 'middlewares' => $middlewares];
+    }
+
+    /**
+     * Define a group of routes with shared prefix and middlewares
+     * 
+     * @param string $prefix
+     * @param array $middlewares
+     * @param callable $callback
+     */
+    public function group($prefix, $middlewares, $callback) {
+        // Save the current state
+        $previousPrefix = $this->groupPrefix;
+        $previousMiddlewares = $this->groupMiddlewares;
+
+        // Set new group prefix and middlewares
+        $this->groupPrefix = $previousPrefix . $prefix;
+        $this->groupMiddlewares = array_merge($this->groupMiddlewares, $middlewares);
+
+        // Execute the callback to define routes in the group
+        $callback($this);
+
+        // Restore the previous state
+        $this->groupPrefix = $previousPrefix;
+        $this->groupMiddlewares = $previousMiddlewares;
+    }
+
+    /**
+     * Dispatch the current request to the correct route and execute middlewares
+     */
+    public function dispatch() {
+        $uri = $_SERVER['REQUEST_URI'];
+        $uri = parse_url($uri, PHP_URL_PATH);
+
+        // Normalize the URI by removing trailing slash (except for root "/")
+        if ($uri !== '/' && substr($uri, -1) === '/') {
+            $uri = rtrim($uri, '/');
+        }
+
+        if (array_key_exists($uri, $this->routes)) {
+            $route = $this->routes[$uri];
+            $middlewares = $route['middlewares'];
+
+            // Execute middlewares
+            foreach ($middlewares as $middleware) {
+                $middlewareInstance = new $middleware();
+                if (!$middlewareInstance->handle()) {
+                    return; // Stop execution if middleware fails
+                }
+            }
+
+            // Execute the route's controller and method
+            $action = $route['action'];
+            list($controllerName, $methodName) = explode('@', $action);
+
+            require_once controllers . "{$controllerName}.php";
+
+            $controller = new $controllerName();
+            $controller->$methodName();
+        } else {
+            http_response_code(404);
+            $view = new View();
+            $view->render('errors/404', [], 'noheader');
+        }
+    }
+}

core/Validator.php

@@ -0,0 +1,55 @@
+<?php
+
+class Validator {
+    private $errors = [];
+
+    /**
+     * Check if a field is not empty
+     */
+    public function required($field, $value, $message = null) {
+        if (empty(trim($value))) {
+            $this->errors[$field] = $message ?? "$field is required.";
+        }
+    }
+
+    /**
+     * Check if a field meets minimum length
+     */
+    public function minLength($field, $value, $length, $message = null) {
+        if (strlen($value) < $length) {
+            $this->errors[$field] = $message ?? "$field must be at least $length characters.";
+        }
+    }
+
+    /**
+     * Check if a field contains letters and numbers
+     */
+    public function alphanumeric($field, $value, $message = null) {
+        if (!preg_match('/^(?=.*[a-zA-Z])(?=.*\d).+$/', $value)) {
+            $this->errors[$field] = $message ?? "$field must contain letters and numbers.";
+        }
+    }
+
+    /**
+     * Validate an email
+     */
+    public function email($field, $value, $message = null) {
+        if (!filter_var($value, FILTER_VALIDATE_EMAIL)) {
+            $this->errors[$field] = $message ?? "Invalid email format.";
+        }
+    }
+
+    /**
+     * Get validation errors
+     */
+    public function errors() {
+        return $this->errors;
+    }
+
+    /**
+     * Check if validation passed
+     */
+    public function passes() {
+        return empty($this->errors);
+    }
+}

core/View.php

@@ -0,0 +1,25 @@
+<?php
+class View
+{
+    private $data = [];
+
+    public function render($view, $data = [], $layout = 'base') {
+        // Store the data 
+        $this->data = $data;
+
+        // Capture the view content
+        ob_start();
+        require_once views . $view . '.php';
+        $content = ob_get_clean();
+
+        // Include the base layout and inject the view content
+        require_once views . "layouts/$layout.php";
+    }
+
+    /**
+     * Safely get a value from the data array
+     */
+    public function get($key) {
+        return $this->data[$key] ?? null;
+    }
+}

core/middlewares/RequireAuth.php

@@ -0,0 +1,12 @@
+<?php
+
+class RequireAuth {
+    public function handle() {
+        if (!isset($_SESSION['user'])) {
+            header('Location: /auth/signin');
+            exit();
+        }
+
+        return true;
+    }
+}

docker-compose.yaml

@@ -0,0 +1,31 @@
+services:
+  mariadb:
+    image: mariadb:11.4 # LTS at 25. 12. 2025
+    restart: on-failure:2
+    environment:
+      MARIADB_ROOT_PASSWORD: root
+    ports:
+      - 3306:3306
+    profiles: ["prod", "dev"]
+
+  phpmyadmin:
+    image: phpmyadmin
+    restart: on-failure:2
+    ports:
+      - 8080:80
+    environment:
+      - PMA_ARBITRARY=1
+    profiles: ["dev"]
+
+  habittracker:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    volumes:
+      - .:/var/www/html
+    ports:
+      - 8000:80
+    depends_on:
+      - mariadb
+    restart: on-failure:2
+    profiles: ["prod"]

public/css/dashboard.css

@@ -0,0 +1,21 @@
+.dashboard {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+.card-wrapper {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 1rem;
+  justify-content: center;
+  margin-top: 2rem;
+}
+
+.card {
+  background-color: var(--clr-secondary);
+  border-radius: var(--border-radious);
+  border: var(--borderWidth-thin) solid var(--clr-border);
+  min-width: 17rem;
+  padding: 1rem;
+}

public/css/form.css

@@ -0,0 +1,78 @@
+.form {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+}
+
+body {
+  background-color: var(--clr-secondary);
+}
+
+.form .header-form {
+  display: flex;
+  align-items: center;
+  flex-direction: column;
+}
+
+.form .header-form img {
+  height: 5rem;
+}
+
+.form form {
+  display: flex;
+  flex-direction: column;
+  padding: 1rem;
+  background-color: var(--clr-tertiary);
+  gap: .5rem;
+  border-radius: var(--border-radious);
+  border: var(--borderWidth-thin) solid var(--clr-border);
+}
+
+.form form input,
+select {
+  background-color: var(--clr-secondary);
+  caret-color: white;
+  color: white;
+  padding: .3rem;
+  border-radius: var(--border-radious);
+  border: var(--borderWidth-thin) solid var(--clr-border);
+  width: 15rem;
+}
+
+.form form input[type="submit"] {
+  background-color: var(--clr-green);
+  color: white;
+}
+
+.form .error {
+  width: 17rem;
+  padding: 1rem;
+  background-color: var(--clr-danger-muted);
+  border-radius: var(--border-radious);
+  border: var(--borderWidth-thin) solid var(--clr-border-danger);
+  margin-bottom: 1rem;
+  color: white;
+}
+
+.form small.error {
+  width: 15rem;
+}
+
+.form .bordered {
+  border-radius: var(--border-radious);
+  border: var(--borderWidth-thin) solid var(--clr-border);
+  width: 17rem;
+  padding: 1rem;
+  margin-top: 1rem;
+  text-align: center;
+}
+
+.form .bordered a {
+  text-decoration: none;
+  color: var(--clr-link-blue);
+}
+
+.form .bordered a:hover {
+  text-decoration: underline;
+}

public/css/global.css

@@ -0,0 +1,47 @@
+@import url("https://fonts.googleapis.com/css2?family=Open+Sans:ital,wght@0,300..800;1,300..800&family=Source+Code+Pro:ital,wght@0,200..900;1,200..900&display=swap");
+
+body {
+	font-family: "Open Sans", serif;
+	background-color: var(--clr-primary);
+	color: white;
+	font-size: 14px;
+}
+
+a {
+	color: white;
+}
+
+h1 {
+	margin-top: .5rem;
+	margin-bottom: 1rem;
+}
+
+.btn-primary,
+.btn-secondary,
+.btn-tertiary,
+.btn-green,
+.btn-danger {
+	background-color: var(--clr-primary);
+	padding: .5rem;
+	text-decoration: none;
+	cursor: pointer;
+	border-radius: var(--border-radious);
+	border: var(--borderWidth-thin) solid var(--clr-border);
+}
+
+.btn-secondary {
+	background-color: var(--clr-secondary);
+}
+
+.btn-tertiary {
+	background-color: var(--clr-tertiary);
+}
+
+.btn-green {
+	background-color: var(--clr-green);
+}
+
+.btn-danger {
+	background-color: var(--clr-danger-muted);
+	border: var(--borderWidth-thin) solid var(--clr-border-danger);
+}

public/css/habits_create.css

@@ -0,0 +1,21 @@
+.form form .dow_chb_wrapper input[type="checkbox"] {
+  width: 1rem;
+}
+
+.form form .dow_chb_wrapper {
+  display: flex;
+  justify-content: space-between;
+}
+
+#lbl_dow {
+  margin-bottom: .5rem;
+}
+
+#lbl_dom {
+  margin-top: .5rem;
+}
+
+#custom-frequency {
+  flex-direction: column;
+  justify-content: space-between;
+}

public/css/habits_dashboard.css

@@ -0,0 +1,15 @@
+.habits-wrapper {
+  display: flex;
+  gap: 1rem;
+  flex-wrap: wrap;
+  justify-content: center;
+}
+
+.habits .bordered {
+  border-radius: var(--border-radious);
+  border: var(--borderWidth-thin) solid var(--clr-border);
+  width: 17rem;
+  padding: 1rem;
+  margin-top: 1rem;
+  text-align: center;
+}

public/css/header.css

@@ -0,0 +1,26 @@
+header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0 2rem;
+  width: 100vw;
+  height: 3rem;
+  background: var(--clr-secondary);
+  border-radius: var(--border-radious);
+  border-bottom: var(--borderWidth-thin) solid var(--clr-border);
+}
+
+#hd-left,
+#hd-right {
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+}
+
+header a img {
+  height: 2rem;
+}
+
+header a {
+  text-decoration: none;
+}

public/css/main.css

@@ -0,0 +1,13 @@
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+main {
+  display: flex;
+  flex-direction: column;
+  margin-top: 2rem;
+  margin-bottom: 2rem;
+  padding: 0 var(--container-size);
+}

public/css/vars.css

@@ -0,0 +1,20 @@
+:root {
+  --container-size: 5vw;
+  --clr-primary: #010409;
+  --clr-secondary: #0d1117;
+  --clr-tertiary: #151b23;
+  --clr-green: #238636;
+  --clr-danger-muted: #f851491a;
+
+  --clr-link-blue: #4493f8;
+  --clr-light-blue: #39a2ae;
+  --clr-light-green: #71f79f;
+  --clr-red: #9b1d20;
+  --clr-orange: #e08e45;
+  --clr-gray-blue: #627c85;
+
+  --border-radious: 5px;
+  --borderWidth-thin: max(1px, 0.0625rem);
+  --clr-border: #3d444db3;
+  --clr-border-danger: #f8514966;
+}

public/index.php

@@ -0,0 +1,51 @@
+<?php
+// Show errors and warnings
+session_start();
+ini_set('display_errors', '1');
+ini_set('log_errors', '1');
+ini_set('error_log', '../storage/logs/error_log.log');
+
+define('models', __DIR__ . '/../app/models/');
+define('views', __DIR__ . '/../app/views/');
+define('controllers', __DIR__ . '/../app/controllers/');
+define('config', __DIR__ . '/../config/');
+
+require_once config . 'environment.php';
+
+require_once '../core/Validator.php';
+require_once '../core/Router.php';
+require_once '../core/View.php';
+require_once '../core/Controller.php';
+require_once '../core/Database.php';
+require_once '../core/middlewares/RequireAuth.php';
+
+require_once models . 'User.php';
+require_once models . 'Habit.php';
+
+// Initialize router
+$router = new Router();
+if(!isset($_SESSION['user'])) {
+    $router->add('/', 'HomeController@index');
+} else {
+    $router->add('/', 'DashboardController@reroute', ['RequireAuth']);
+}
+
+// auth routes
+$router->group('/auth', [], function ($router) {
+    $router->add('/signin', 'AuthController@signin');
+    $router->add('/signup', 'AuthController@signup');
+    $router->add('/logout', 'AuthController@logout');
+});
+
+// dashboard route
+$router->add('/dashboard', 'DashboardController@index', ['RequireAuth']);
+
+// habits routes
+$router->group('/habits', ['RequireAuth'], function ($router) {
+    $router->add('', 'HabitController@index');
+    $router->add('/create', 'HabitController@create');
+    $router->add('/edit/{id}', 'HabitController@edit');
+    $router->add('/delete/{id}', 'HabitController@delete');
+});
+
+$router->dispatch();

storage/logs/.gitignore

@@ -0,0 +1 @@
+*.log