<?php
namespace nur\sery\wip\schema\_assoc;

use nulib\ValueException;
use nur\sery\wip\schema\_scalar\ScalarResult;
use nur\sery\wip\schema\input\Input;
use nur\sery\wip\schema\Result;
use nur\sery\wip\schema\types\IType;
use nur\sery\wip\schema\Wrapper;
use nur\sery\wip\schema\WrapperContext;

class AssocWrapper extends Wrapper {
  function __construct(AssocSchema $schema, &$value=null, $valueKey=null, ?array $params=null) {
    $keys = $schema->getKeys();
    $keyTypes = [];
    $keyWrappers = [];
    foreach ($keys as $key) {
      $keyTypes[$key] = null;
      $keyWrappers[$key] = $schema->getSchema($key)->getWrapper();
    }
    $this->context = $context = new AssocWrapperContext($schema, null, null, $params);
    $context->arrayResult = new ScalarResult();
    $context->keys = $keys;
    $context->keyTypes = $keyTypes;
    $context->keyWrappers = $keyWrappers;
    $context->result = $context->arrayResult;

    # calculer manuellemet throw ici parce que WrapperContext le met à true par
    # défaut. on veut pouvoir mettre temporairement throw à false si jamais il
    # n'est pas spécifié par l'utilisateur
    $throw = $params["throw"] ?? null;
    # Si $value est null, ne pas lancer d'exception, parce qu'on considère que
    # c'est une initialisation sans conséquences
    if ($throw === null && $value !== null) $throw = true;
    $context->throw = $throw ?? false;
    $this->reset($value, $valueKey);
    $context->throw = $throw ?? true;
  }

  function isAssoc(?AssocWrapper &$wrapper=null): bool { $wrapper = $this; return true; }

  /** @var AssocWrapperContext  */
  protected WrapperContext $context;

  protected function resetContext($resetSelectedKey): void {
    $context = $this->context;
    $context->arrayResult->reset();
    foreach ($context->keyWrappers as $wrapper) {
      $wrapper->getResult()->reset();
    }
    $context->analyzed = false;
    $context->normalized = false;
    if ($resetSelectedKey) {
      $context->selectedKey = null;
      $context->type = $context->arrayType;
      $context->result = $context->arrayResult;
    }
  }

  function getKeys(): array {
    return $this->context->keys;
  }

  protected function _getWrapper($key): Wrapper {
    $wrapper = $context->keyWrappers[$key] ?? null;
    if ($wrapper === null) throw ValueException::invalid_key($key);
    return $wrapper;
  }

  /** @param string|int|null $key */
  function select($key=null): Wrapper {
    $context = $this->context;
    if ($key === null) {
      $context->selectedKey = null;
      $context->type = $context->arrayType;
      $context->result = $context->arrayResult;
      return $this;
    }
    $wrapper = $this->_getWrapper($key);
    $context->selectedKey = $key;
    $context->type = $wrapper->getType();
    $context->result = $wrapper->getResult();
    return $wrapper;
  }

  protected function _analyze(?array $params): int {
    return -1;
  }

  protected function _normalize(?array $params): bool {
    return false;
  }

  function getResult($key=false): Result {
    if ($key === false) return $this->context->result;
    elseif ($key === null) return $this->context->arrayResult;
    else return $this->_getWrapper($key)->getResult();
  }

  function getType($key=false): IType {
    if ($key === false) return $this->context->type;
    elseif ($key === null) return $this->context->arrayType;
    else return $this->_getWrapper($key)->getType();
  }

  function get($default=null, $key=false) {
    $context = $this->context;
    if (!$context->arrayResult->available) return $default;
    if ($key === false) $key = $context->selectedKey;
    if ($key === null) return $context->input->get($context->valueKey);
    else return $this->_getWrapper($key)->get($default);
  }

  function set($value, ?array $params=null, $key=false): Wrapper {
    $context = $this->context;
    if ($key === false) $key = $context->selectedKey;
    if ($key === null) {
      $context->input->set($value, $context->valueKey);
      $this->afterModify($params);
    } else {
      $this->_getWrapper($key)->set($value);
    }
    return $this;
  }

  function unset(?array $params=null, $key=false): Wrapper {
    $context = $this->context;
    if ($key === false) $key = $context->selectedKey;
    if ($key === null) {
      $context->input->unset($context->valueKey);
      $this->afterModify($params);
    } else {
      $this->_getWrapper($key)->unset();
    }
    return $this;
  }

  function format($format=null, $key=false): string {
    $context = $this->context;
    if ($key === false) $key = $context->selectedKey;
    if ($key === null) return $this->_format($context, $format);
    else return $this->_getWrapper($key)->format($format);
  }
}