<?php
namespace nur\sery\schema\values;

use nur\sery\schema\types\IType;

class ScalarValue implements IValue {
  use TValue;

  /** @var ?Result résultat de l'analyse de la valeur */
  protected ?Result $result;

  function __construct(&$value, array $schema, $key=null, bool $verifix=true) {
    $this->schema = $schema;
    $this->reset($value, $key, $verifix);
  }

  function isScalar(?ScalarValue &$scalar=null): bool { $scalar = $this; return true; }
  function isSeq(?SeqValue &$seq=null): bool { return false; }
  function isAssoc(?AssocValue &$assoc=null): bool { return false; }

  function get($default=null) {
    $key = $this->key;
    if ($key === null) return $this->value;
    elseif (array_key_exists($key, $this->value)) return $this->value[$key];
    else return $default;
  }

  function set($value): self {
    $key = $this->key;
    if ($key === null) $this->value = $value;
    else $this->value[$key] = $value;
    return $this;
  }

  /** @var IType */
  protected $type;

  function type(): IType {
    if ($this->type === null) $this->type = $this->md()->getType($this->key);
    return $this->type;
  }

  function exists(): bool {
    return $this->type()->exists($this->value, $this->key);
  }

  /**
   * analyser, corriger éventuellement et normaliser la valeur
   *
   * si la valeur était déjà normalisée, retourner false.
   */
  function verifix(bool $throw=true, ?Result &$result=null): bool {
    $type = $this->type();
    $key = $this->key;
    if ($key === null) $modified = $type->verifix($this->value, $throw, $result);
    else $modified = $type->verifix($this->value[$key], $throw, $result);
    $this->result = $result;
    return $modified;
  }

  function parse($value, bool $throw=true, ?Result &$result=null) {
    $this->type()->verifix($value, $throw, $result);
    $this->set($value);
    $this->result = $result;
    return $value;
  }

  function format(?string $format=null): string {
    $type = $this->type();
    $key = $this->key;
    if ($key === null) return $type->format($this->value, $format);
    else return $type->format($this->value[$key], $format);
  }
}