<?php


namespace refill;


class chctl
{
    protected $mSpeedtable;

    static $cache_names = [
        ['quality'=> 1,'name' => 'channel-ctl-oil-common-limit'],
        ['quality'=> 2,'name' => 'channel-ctl-oil-fast-limit'],
        ['quality'=> 1,'name' => 'channel-ctl-phone-common-limit'],
        ['quality'=> 2,'name' => 'channel-ctl-phone-fast-limit']
    ];

    public function __construct()
    {
        $this->mSpeedtable = [];
    }

    public function load()
    {
        $this->mSpeedtable = [];
        foreach (self::$cache_names as $cache)
        {
            $quality = $cache['quality'];
            $cache_name = $cache['name'];
            
            $data = rcache($cache_name,"provider-");
            $data = unserialize($data['data']);

            $cfgs = empty($data) ? [] : $data;

            foreach ($cfgs as $items)
            {
                foreach ($items as $item) {
                    $name = $item['name'];
                    $amount = $item['amount'];
                    $card_type = $item['type'];

                    $opened = $item['opened'] == 1 ? true : false;
                    $sort = $item['sort'];
                    $speed = $item['speed'];

                    $key = $this->prefix($name,$amount,$card_type,$quality);
                    $this->mSpeedtable[$key] = new ctl_item($name,$card_type,$amount,$speed,$sort,0,$opened);
                }
            }
        }
    }

    public function match($names,int $spec, int $card_type,int $quality)
    {

        $ctl_items = [];
        foreach ($names as $name)
        {
            $key = $this->prefix($name,$spec,$card_type,$quality);
            if(array_key_exists($key,$this->mSpeedtable)) {
                $ctl_items[] = $this->mSpeedtable[$key];
            }
        }

        if(empty($ctl_items)) {
            return $names;
        }

        $usable_items = [];
        foreach ($ctl_items as $item) {
            if($item->opened()) {
                $usable_items[] = $item;
            }
        }

        $ascending = function ($l, $r) {
            $lproity = $l->priority();
            $rproity = $r->priority();

            $lover = $l->speed_overload() ? 1 : 0;
            $rover = $r->speed_overload() ? 1 : 0;

            if($lover == $rover) {
                return $lproity < $rproity ? -1 : 1;
            }
            else {
                return $lover < $rover ? -1 : 1;
            }
        };
        usort($usable_items, $ascending);

        $result = [];
        foreach ($usable_items as $item) {
            $result[] = $item->name();
        }

        return $result;
    }

    private function prefix($name,$spec,$card_type,$quality)
    {
        return "{$name}-{$spec}-{$card_type}-{$quality}";
    }
}