<?php
namespace metagen_php;
use Exception;

function flt_str2num($val, $name, $data, $args)
{
  $config_globals = $GLOBALS['CONFIG_GLOBALS'];
  $config_extra = $GLOBALS['CONFIG_EXTRAS'];
  if(!property_exists($config_extra, 'flt_str2num_entries'))
    $config_extra->flt_str2num_entries = array();

  if(is_string($val))
  {
    if(strlen($val) === 0)
      throw new Exception("Bad value, string empty, crc28 can't be generated");

    //special case
    if(strpos($val, '@') !== 0)
      throw new Exception("@ expected");

    $name = substr($val, 1) . '.conf.js';

    $path = \taskman\config_real_path($config_globals->base_dirs, $name);

    if(\taskman\config_get_header($path, $proto_id, $alias))
    {
      if($alias !== $val)
        throw new Exception("Config file header alias doesn't match: $alias vs $val");
      $val = $proto_id;
    }
    else
     throw new Exception("Config file header is not valid: $path");
  }

  if(!is_numeric($val))
    throw new Exception("Bad value, not a number(" . serialize($val) . ")");

  $config_extra->flt_str2num_entries[1*$val] = true;

  return 1*$val;
}

function validate_flt_str2num(\taskman\ConfigFetchResult $fetch_result, \taskman\ConfigCacheEntry $entry)
{
  $config_extra = $entry->extras;

  if(!property_exists($config_extra, 'flt_str2num_entries'))
    return;

  foreach($config_extra->flt_str2num_entries as $conf_id => $_) 
  {
    if($conf_id == 0)
      continue;

    $fetch_result->getById($conf_id);
  }
}

function flt_range($val, $name, $data, $args)
{
  if(count($args) != 2)
    throw new Exception("Wrong usage of \"flt_range\". Use \"@flt_range:[0,1]\" where 0 - min, 1 - max");
    
  if(!is_numeric($args[0]) || !is_numeric($args[1]))
      throw new Exception("Wrong usage of \"flt_range\". Use \"@flt_range:[0,1]\" where 0 - min, 1 - max");

  if(is_numeric($val))
  {
    if($val < $args[0] || $val > $args[1])
      throw new Exception("Value ".$val.", not in range(" . $args[0] . "," . $args[1] . ")");
  }

  return $val;
}

function flt_time($val, $name, $data, $args)
{
  $str = "";
  if(is_string($val))
  {
    if(strlen($val) === 0)
      throw new Exception("Bad value, string empty, crc28 can't be generated");

    $reg = "/^([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})$/";
    
    if(!preg_match($reg, $val, $matches))
      throw new Exception("Bad value, pattern 00:00:00");

    $h = intval($matches[1]);
    $m = intval($matches[2]);
    $s = intval($matches[3]);
    
    return $h * 3600 + $m * 60 + $s;
  }

  return 0;
}

function flt_class($val, $name, $data, $args)
{
  global $GAME_ROOT;

  $config_extra = $GLOBALS['CONFIG_EXTRAS'];
  if(!property_exists($config_extra, 'flt_class_entries'))
    $config_extra->flt_class_entries = array();

  $target_class = $args;
  if(is_array($target_class))
    $target_class = $target_class[0];

  if(!class_exists($target_class))
    throw new Exception($val.". Target class \"".$target_class."\" is not valid");

  $config_extra->flt_class_entries[$val] = $target_class;
  
  return $val;
}

function validate_flt_class(\taskman\ConfigFetchResult $fetch_result, \taskman\ConfigCacheEntry $entry)
{
  $config_extra = $entry->extras;

  if(!property_exists($config_extra, 'flt_class_entries'))
    return;

  $config_globals = $GLOBALS['CONFIG_GLOBALS'];
  
  foreach($config_extra->flt_class_entries as $conf_ref => $target_class) 
  {
    $conf_cache = null;

    if(is_string($conf_ref))
    {
      if(empty($conf_ref))
        continue;

      $conf_path = $conf_ref;
      
      if(strpos($conf_path, '@') === 0)
        $conf_path = substr($conf_path, 1) . '.conf.js';

      $conf_path = \taskman\normalize_path(\taskman\config_real_path($config_globals->base_dirs, $conf_path));

      $conf_cache = $fetch_result->getByPath($conf_path);
    }
    else if(is_int($conf_ref))
    {
      if($conf_ref == 0)
        continue;

      $conf_cache = $fetch_result->getById($conf_ref);
    }
    else
      throw new Exception("Invalid config ref: '$conf_ref'");

    if($conf_cache == null)
      throw new Exception("Config not found by ref: '$conf_ref'");

    $conf_class = $conf_cache->class;

    if($conf_class != $target_class && !is_subclass_of($conf_class, $target_class))
      throw new Exception("Config class is '$conf_class'. Must be '$target_class' or its child");
  }
}