inventory/backend/models/Item.php

<?php
class Item {
    private $conn;
    private $table_name = "items";

    public $id;
    public $name;
    public $description;
    public $serial_number;
    public $picture;
    public $quantity;
    public $price;
    public $created_at;
    public $updated_at;

    public function __construct($db) {
        $this->conn = $db;
    }

    public function create() {
        $query = "INSERT INTO " . $this->table_name . " SET name=:name, description=:description, serial_number=:serial_number, picture=:picture, quantity=:quantity, price=:price, created_at=:created_at, updated_at=:updated_at";

        $stmt = $this->conn->prepare($query);

        $this->name = htmlspecialchars(strip_tags($this->name));
        $this->description = htmlspecialchars(strip_tags($this->description));
        $this->serial_number = htmlspecialchars(strip_tags($this->serial_number));
        $this->picture = htmlspecialchars(strip_tags($this->picture));
        $this->quantity = htmlspecialchars(strip_tags($this->quantity));
        $this->price = htmlspecialchars(strip_tags($this->price));
        $this->created_at = date('Y-m-d H:i:s');
        $this->updated_at = date('Y-m-d H:i:s');

        $stmt->bindParam(":name", $this->name);
        $stmt->bindParam(":description", $this->description);
        $stmt->bindParam(":serial_number", $this->serial_number);
        $stmt->bindParam(":picture", $this->picture);
        $stmt->bindParam(":quantity", $this->quantity);
        $stmt->bindParam(":price", $this->price);
        $stmt->bindParam(":created_at", $this->created_at);
        $stmt->bindParam(":updated_at", $this->updated_at);

        if($stmt->execute()) {
            return true;
        }

        return false;
    }

    public function read() {
        $query = "SELECT * FROM " . $this->table_name . " ORDER BY created_at DESC";

        $stmt = $this->conn->prepare($query);
        $stmt->execute();

        return $stmt;
    }

    public function readOne() {
        $query = "SELECT * FROM " . $this->table_name . " WHERE id = ? LIMIT 0,1";

        $stmt = $this->conn->prepare($query);
        $stmt->bindParam(1, $this->id);
        $stmt->execute();

        $row = $stmt->fetch(PDO::FETCH_ASSOC);

        $this->name = $row['name'];
        $this->description = $row['description'];
        $this->serial_number = $row['serial_number'];
        $this->picture = $row['picture'];
        $this->quantity = $row['quantity'];
        $this->price = $row['price'];
        $this->created_at = $row['created_at'];
        $this->updated_at = $row['updated_at'];
    }

    public function update() {
        $query = "UPDATE " . $this->table_name . " SET name=:name, description=:description, serial_number=:serial_number, picture=:picture, quantity=:quantity, price=:price, updated_at=:updated_at WHERE id=:id";

        $stmt = $this->conn->prepare($query);

        $this->name = htmlspecialchars(strip_tags($this->name));
        $this->description = htmlspecialchars(strip_tags($this->description));
        $this->serial_number = htmlspecialchars(strip_tags($this->serial_number));
        $this->picture = htmlspecialchars(strip_tags($this->picture));
        $this->quantity = htmlspecialchars(strip_tags($this->quantity));
        $this->price = htmlspecialchars(strip_tags($this->price));
        $this->updated_at = date('Y-m-d H:i:s');

        $stmt->bindParam(":name", $this->name);
        $stmt->bindParam(":description", $this->description);
        $stmt->bindParam(":serial_number", $this->serial_number);
        $stmt->bindParam(":picture", $this->picture);
        $stmt->bindParam(":quantity", $this->quantity);
        $stmt->bindParam(":price", $this->price);
        $stmt->bindParam(":updated_at", $this->updated_at);
        $stmt->bindParam(":id", $this->id);

        if($stmt->execute()) {
            return true;
        }

        return false;
    }

    public function delete() {
        $query = "DELETE FROM " . $this->table_name . " WHERE id = ?";

        $stmt = $this->conn->prepare($query);
        $stmt->bindParam(1, $this->id);

        if($stmt->execute()) {
            return true;
        }

        return false;
    }
}
?>