<?php
namespace nulib\schema\_scalar;

use nulib\cl;
use nulib\ref\schema\ref_analyze;
use nulib\ref\schema\ref_schema;
use nulib\ValueException;
use nulib\schema\Result;
use nulib\schema\Schema;
use nulib\schema\Wrapper;
use Throwable;

/**
 * Class ScalarResult: résultat de l'analyse ou de la normalisation d'une valeur
 */
class ScalarResult extends Result {
  function getKeys(): array {
    return ScalarSchema::KEYS;
  }

  function select($key): Result {
    if ($key !== null) throw ValueException::invalid_key($key);
    return $this;
  }

  protected array $result;
  
  function reset(): void {
    $this->result = array_merge(
      array_fill_keys(static::KEYS, null), [
      "resultAvailable" => false,
      "present" => false,
      "available" => false,
      "null" => false,
      "valid" => false,
      "normalized" => false,
    ]);
  }

  function __get(string $name) {
    return $this->result[$name];
  }

  function __set(string $name, $value): void {
    $this->result[$name] = $value;
  }

  protected function getMessage(string $key,  Schema $schema): string {
    $message = cl::get($schema->messages, $key);
    if ($message !== null) return $message;
    return cl::get(ref_schema::MESSAGES, $key);
  }

  function setMissing( Schema $schema): int {
    $this->resultAvailable = true;
    $this->present = false;
    $this->available = false;
    if (!$schema->required) {
      $this->null = false;
      $this->valid = true;
      $this->normalized = true;
      return ref_analyze::NORMALIZED;
    } else {
      $this->messageKey = $messageKey = "missing";
      $this->message = $this->getMessage($messageKey, $schema);
      return ref_analyze::MISSING;
    }
  }

  function setUnavailable( Schema $schema): int {
    $this->resultAvailable = true;
    $this->present = true;
    $this->available = false;
    if (!$schema->required) {
      $this->null = false;
      $this->valid = true;
      $this->normalized = true;
      return ref_analyze::NORMALIZED;
    } else {
      $this->messageKey = $messageKey = "unavailable";
      $this->message = $this->getMessage($messageKey, $schema);
      return ref_analyze::UNAVAILABLE;
    }
  }

  function setNull( Schema $schema): int {
    $this->resultAvailable = true;
    $this->present = true;
    $this->available = true;
    $this->null = true;
    if ($schema->nullable) {
      $this->valid = true;
      $this->normalized = true;
      return ref_analyze::NORMALIZED;
    } else {
      $this->messageKey = $messageKey = "null";
      $this->message = $this->getMessage($messageKey, $schema);
      return ref_analyze::NULL;
    }
  }

  function setInvalid($value,  Schema $schema, ?Throwable $exception=null): int {
    $this->resultAvailable = true;
    $this->present = true;
    $this->available = true;
    $this->null = false;
    $this->valid = false;
    $this->origValue = $value;
    $this->messageKey = $messageKey = "invalid";
    $message = $this->getMessage($messageKey, $schema);
    if ($exception !== null) {
      $tmessage = ValueException::get_message($exception);
      if ($tmessage) $message = $tmessage;
    }
    $this->message = $message;
    $this->exception = $exception;
    return ref_analyze::INVALID;
  }

  function addInvalidMessage(Wrapper $wrapper): void {
    $this->resultAvailable = true;
    $this->present = true;
    $this->available = true;
    $this->null = false;
    $this->valid = false;
    $this->messageKey = "invalid";
    $result = $wrapper->getResult();
    $resultException = $result->exception;
    $resultMessage = $result->message;
    if ($resultException !== null) {
      $tmessage = ValueException::get_message($resultException);
      if ($tmessage) {
        if ($resultMessage !== null) $resultMessage .= ": ";
        $resultMessage .= $tmessage;
      }
    }
    $message = $this->message;
    if ($message) $message .= "\n";
    $message .= $resultMessage;
    $this->message = $message;
  }

  function setValid($normalizedValue=null): int {
    $this->resultAvailable = true;
    $this->present = true;
    $this->available = true;
    $this->null = false;
    $this->valid = true;
    $this->normalizedValue = $normalizedValue;
    return ref_analyze::VALID;
  }

  function setNormalized(): int {
    $this->resultAvailable = true;
    $this->present = true;
    $this->available = true;
    $this->null = false;
    $this->valid = true;
    $this->normalized = true;
    return ref_analyze::NORMALIZED;
  }

  function throw(bool $throw): void {
    if ($throw) {
      $exception = $this->exception;
      if ($exception !== null) throw $exception;
      else throw new ValueException($this->message);
    }
  }
}