vlw.se/src/Database/Models/Model.php

<?php

	namespace VLW\Database\Models;

	use \VV;

	use VLW\Database\Database;

	require_once VV::root("src/Database/Database.php");

	abstract class Model {
		const DATE_FORMAT = Database::DATE_FORMAT;

		abstract public string $id { get; }

		private static Database $_db;

		protected readonly Database $db;
		private bool $_resolved = false;
		private array $_row;

		public function __construct(
			private readonly string $table,
			private readonly array $columns,
			private readonly array $where
		) {
			// Establish once and reuse Database connection
			$this->db = self::$_db ??= new Database();
		}

		private ?array $row {
			get {
				// Return existing row data
				if ($this->_resolved) { return $this->_row; }

				$this->_resolved = true;
				return $this->_row = $this->db
					->from($this->table)
					->where($this->where)
					->limit(1)
					->select($this->columns)
					->fetch_assoc() ?? [];
			}
		}

		protected static function create(string $table, array $values): bool {
			return new Database()->from($table)->insert($values);
		}

		public function get(string $key): mixed {
			return $this->row[$key] ?? null;
		}

		public function set(string $key, mixed $value): bool {
			$this->_row[$key] = $value;

			return $this->db
				->from($this->table)
				->where($this->where)
				->update([$key => $value]);
		}
	}