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prolog.pl

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+has_duplicates(List) :- 
+	member(X, List),
+	select(X, List, Rest), 
+	member(X, Rest), !.
+collect_todos(Ys) :-
+	findall(Y, todo(_, Y), Ys).
+todos_have_duplicates :-
+	collect_todos(Ys),
+	has_duplicates(Ys).
+todo(24, 'koko').
+todo(25, 'xasda').
+todo(26, 'dsadsa').

readme.txt

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+sudo apt update
+sudo apt install nodejs npm
+cd ~/projParadyg
+npm install express
+node server.js
+
+javac -cp ".:lib/sqlite-jdbc-3.45.3.0.jar:lib/slf4j-api-2.1.0-alpha1.jar" -encoding UTF-8 SQLiteToProlog.java
+java -cp ".:lib/sqlite-jdbc-3.45.3.0.jar:lib/slf4j-api-2.1.0-alpha1.jar" SQLiteToProlog

script.js

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+$(document).ready(function(){
+    const apiUrl = 'http://localhost:3000';
+
+    // funkcja która dodaje zadania do listy
+    const appendTaskToList = (task) => {
+        $("#todoList").append("<li data-id='" + task.id + "'>" + task.task + " <button class='rmBtn'>Remove task</button></li>");
+    };
+
+    // funkcja która zwraca błąd gdy nie można dodać zadania
+    const handleAjaxError = (message) => () => alert(message);
+
+    // pobieranie zdań
+    const fetchTasks = () => {
+        $.ajax({
+            url: `${apiUrl}/tasks`,
+            method: 'GET',
+            success: function(tasks) {
+                tasks.forEach(appendTaskToList);
+            },
+            error: handleAjaxError("Error fetching tasks")
+        });
+    };
+
+    // funkcja która dodaje zadanie
+    const addTask = (task) => {
+        if (task !== "") {
+            $.ajax({
+                url: `${apiUrl}/addTask`,
+                method: 'POST',
+                contentType: 'application/json',
+                data: JSON.stringify({ task: task }),
+                success: function(response) {
+                    appendTaskToList(response);
+                    $("#todoInput").val("");
+                },
+                error: handleAjaxError("Error adding task")
+            });
+        } else {
+            alert("Enter task");
+        }
+    };
+
+    // funkcja która usuwa zadanie
+    const deleteTask = (taskId, listItem) => {
+        $.ajax({
+            url: `${apiUrl}/deleteTask/${taskId}`,
+            method: 'DELETE',
+            success: function(response) {
+                listItem.remove();
+            },
+            error: handleAjaxError("Error deleting task")
+        });
+    };
+
+    // pobieranie i wyświetlanie zadań
+    fetchTasks();
+
+    // dodawanie nowego zadania
+    $("#addBtn").click(function(){
+        const task = $("#todoInput").val();
+        addTask(task);
+    });
+
+    // usuwanie zadania
+    $(document).on("click", ".rmBtn", function(){
+        const listItem = $(this).parent();
+        const taskId = listItem.data('id');
+        deleteTask(taskId, listItem);
+    });
+});

server.js

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+const express = require('express');
+const bodyParser = require('body-parser');
+const sqlite3 = require('sqlite3').verbose();
+const app = express();
+const port = 3000;
+
+// Ustawienia bodyParser do obsługi danych w formacie JSON
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({ extended: true }));
+
+// Połączenie z bazą danych SQLite
+const db = new sqlite3.Database('tasks.db');
+
+// tworzenie tabeli tasks, jeśli jeszcze nie istnieje
+db.serialize(() => {
+  db.run("CREATE TABLE IF NOT EXISTS tasks (id INTEGER PRIMARY KEY AUTOINCREMENT, task TEXT)");
+});
+
+// Obsługa CORS, czyli ograniczenie żądań stron internetowych z innej domeny
+app.use((req, res, next) => {
+  res.header('Access-Control-Allow-Origin', '*');
+  res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept');
+  res.header('Access-Control-Allow-Methods', 'GET, POST, DELETE, OPTIONS');
+  next();
+});
+
+// Dodawanie zadania
+app.post('/addTask', (req, res) => {
+  const task = req.body.task;
+  if (task) {
+    db.run("INSERT INTO tasks (task) VALUES (?)", task, function(err) {
+      if (err) {
+        return res.status(500).json({ error: err.message });
+      }
+      res.json({ id: this.lastID, task: task });
+    });
+  } else {
+    res.status(400).json({ error: "No task provided" });
+  }
+});
+
+// Usuwanie zadania
+app.delete('/deleteTask/:id', (req, res) => {
+  const id = req.params.id;
+  db.run("DELETE FROM tasks WHERE id = ?", id, function(err) {
+    if (err) {
+      return res.status(500).json({ error: err.message });
+    }
+    res.json({ success: true });
+  });
+});
+
+// Pobieranie wszystkich zadań
+app.get('/tasks', (req, res) => {
+  db.all("SELECT * FROM tasks", [], (err, rows) => {
+    if (err) {
+      return res.status(500).json({ error: err.message });
+    }
+    res.json(rows);
+  });
+});
+
+app.listen(port, () => {
+  console.log(`Server running at http://localhost:${port}/`);
+});