<?php

namespace classes;

class object_property
{
    public int $id; // The table of the objects in the database (e.g. users)
    private string $table; // The id of the object in the database
    private string $column; // The column name of the field in the database table (e.g. id, name, email)
    private string $type; // The data type of the field in the database table (e.g. int, varchar, text)
    private bool $required; // Whether the field is required or not
    private mixed $default; // The default value of the field

    public function __construct(string $table, int $id, string $column, string $type, bool $required = false, mixed $default = null)
    {
        $this->table = $table;
        $this->id = $id;
        $this->column = $column;
        $this->type = $type;
        $this->required = $required;
        $this->default = $default;
    }

    public function __toString(): string
    {
        // Return the value of the field in the database table
        return $this->value();
    }

    /**
     * Get the value of the field in the database table
     * @return mixed The value of the field in the database table
     */
    public function value(): mixed
    {
        // Get the value of the field in the database table
        global $db;
        $sql = "SELECT $this->column FROM $this->table WHERE id = $this->id";
        $result = $db->query($sql);
        $row = $db->fetch_assoc($result);
        return $row[$this->column];
    }

    /**
     * Set the value of the field in the database table
     * @param mixed $value The value of the field in the database table
     */
    public function set(mixed $value): void
    {
        // Set the value of the field in the database table
        global /** @var db $db */
        $db;

        // If the value is null, set it to null
        if ($value === null) {
            $sql = "UPDATE $this->table SET $this->column = NULL WHERE id = $this->id";
        }  // If the value is an integer, set it to the integer value
        elseif (is_int($value)) {
            $sql = "UPDATE $this->table SET $this->column = $value WHERE id = $this->id";
        }  // If the value is a string, escape it
        else {
            $value = $db->escape_string($value);
            $sql = "UPDATE $this->table SET $this->column = '$value' WHERE id = $this->id";
        }
        $db->query($sql);
    }

    /**
     * Nullify the value of the field in the database table
     */
    public function nullify(): void
    {
        // Set the value of the field in the database table to null
        global /** @var db $db */
        $db;
        $sql = "UPDATE $this->table SET $this->column = NULL WHERE id = $this->id";
        $db->query($sql);
    }
}