<?php
/**
 * Created by PhpStorm.
 * User: Elton
 * Date: 2020/5/19
 * Time: 9:58
 */

namespace app\common\service;


use app\common\library\Redis;
use app\common\model\AdManage;
use app\common\model\AdMaterial;
use app\common\model\object\UserObject;
use app\main\constants\AdConstants;

// 该类已弃用
class AdService
{
    /**
     * @var AdService
     */
    private static $self;

    /**
     * @return AdService
     */
    public static function instance()
    {
        if(self::$self == NULL){
            self::$self = new self();
        }

        return self::$self;
    }

    /**
     * @return AdManage
     */
    public function getAdManageModel()
    {
        return model('AdManage');
    }

    /**
     * @return AdMaterial
     */
    public function getAdMaterialModel()
    {
        return model('AdMaterial');
    }


    /**
     * 第一步：根据位置查询所有匹配的广告计划ID
     * @param $position_code 位置编号
     * @return string 匹配的广告计划ID
     */
    public function getAllPlan($position_code)
    {
        // 这里从缓存哩读数据
        $data = $this->getAllAd();

        if ($data) {
            $arr = [];
            foreach ($data as $k => $item) {
                if (in_array($position_code, explode(',', $item['show_position']))) {
                    array_push($arr, $item['id']);
                };
            }
            return implode(',', $arr);
        } else {
            return '';
        }
    }

    /**
     * 第二步：遍历所有计划，过滤出匹配用户ID的计划
     * @param $position_code
     * @param $uid
     * @param $channel_id
     * @return array
     */
    public function getMatchPlan($position_code, $uid, $channel_id)
    {
        $match_plans = [];
        $plans = $this->getAllPlan($position_code);
        if ($plans) {
            $plan_arr = explode(',', $plans);
            foreach ($plan_arr as $k => $ad_id) {
                // $ad_id => 计划ID
                // 这里需要获取用户渠道ID  AD:JU:计划id:渠道号
                $redis_key = AdConstants::AD_JU_KEY . $ad_id . $channel_id;
                $uid_str = Redis::instance()->get($redis_key);
                if($uid_str){
                    $uid_arr = implode(',', $uid_str);
                    if(in_array($uid, $uid_arr)){
                        array_push($match_plan, $ad_id);
                    }
                }
            }
        }
        return $match_plans;
    }


    /**
     * 第三步：通过计划查找合适的素材
     * @param $position_code   位置编号
     * @param $uid             用户ID
     * @param $channel_id      渠道ID
     * @return array
     */
    public function getMatchAdMaterial($position_code, $uid, $channel_id)
    {
        $matchPlans = $this->getMatchPlan($position_code, $uid, $channel_id);
        $banner_ad_ids = []; //
        $screen_material_ids = []; //插屏
        if ($matchPlans) {
            foreach ($matchPlans as $k => $ad_id) {
                // $ad_id => ad_manage 对应ID
                $redis_key = AdConstants::AD_P_KEY.$ad_id;
                $redis_data = Redis::instance()->get($redis_key);
                if($redis_data){
                    $obj = json_decode($redis_data);
                    if ($obj->ad_type == '1') {
                        //插屏广告
                        if ($obj->state) {
                            array_push($screen_material_ids, $ad_id);
                        }
                    } else {
                        //Banner广告
                        if ($obj->state) {
                            array_push($banner_ad_ids, $ad_id);
                        }
                    }
                }

            }
        }

        $data = [];
        switch ($position_code) {
            case AdConstants::AD_P_XQ:
                //书籍详情页
                $data = $this->_getMultiMaterial($banner_ad_ids,$uid,AdConstants::AD_P_XQ);
                break;
            case AdConstants::AD_P_ZG:
                //追更页
                $data = $this->_getMultiMaterial($banner_ad_ids,$uid,AdConstants::AD_P_ZG);
                break;
            case AdConstants::AD_P_YDYDB:
                //阅读页底部
                $data = $this->_getMultiMaterial($banner_ad_ids,$uid,AdConstants::AD_P_YDYDB);
                break;
            case AdConstants::AD_P_ZJYD:
                //最近阅读
                $data = $this->_getOneMaterial($banner_ad_ids,$uid,AdConstants::AD_P_ZJYD);
                break;
            case AdConstants::AD_P_SJ:
                //书架
                $data = $this->_getOneMaterial($banner_ad_ids,$uid,AdConstants::AD_P_SJ);
                break;
            case AdConstants::AD_P_YDYCD:
                //阅读页顶部菜单下拉
                $data = $this->_getOneMaterial($banner_ad_ids,$uid,AdConstants::AD_P_YDYCD);
                break;
            case AdConstants::AD_P_YDY_ZJ_A:
                //阅读页中间1
                $data = $this->_getOneMaterial($banner_ad_ids,$uid,AdConstants::AD_P_YDY_ZJ_A, 'screen');
                break;
            default:
                //阅读页中间2 AdConstants::AD_P_YDY_ZJ_B
                $data = $this->_getOneMaterial($banner_ad_ids, $uid,AdConstants::AD_P_YDY_ZJ_B,'screen');
        }
        return $data;
    }

    /**
     * 获取单个Banner 素材
     * @param array $banner_ad_ids
     * @param $uid
     * @param string $type
     * @param int $position
     * @return array
     */
    private function _getOneMaterial(array $banner_ad_ids, $uid, $position = 0, $type = 'banner')
    {
        // 打点广告ID
        $dot_ad_ids = implode(',', $banner_ad_ids);
        $rst = [];

        // 从缓存哩取数据
        $data = $this->getMaterial($type);
        if($data){
            $idx = rand(0, count($data)-1);
            $item = $data[$idx];
            $rst = [
                'material_id' =>$item->id,
                'img_url' =>$item->img_url,
                'link_url' =>$item->link_url,
                'ad_ids' => $dot_ad_ids,
                'position' => $position,
                'user_id' => $uid
            ];
        }
        return $rst;
    }

    /**
     * @param array $ad_ids
     * @param $uid
     * @param int $position
     * @param string $type
     * @return array
     */
    private function _getMultiMaterial(array $ad_ids, $uid, $position = 0, $type = 'banner')
    {
        // 打点广告ID
        $dot_ad_ids = implode(',', $ad_ids);
        $rst = [];
        $data = $this->getMaterial($type);
        if (count($data)) {
            for ($i = 0; $i < 3; $i++) {
                $idx = rand(0, count($data) - 1);
                $item = $data[$idx];
                array_push($rst, [
                    'material_id' => $item->id,
                    'img_url' => $item->img_url,
                    'link_url' => $item->link_url,
                    'ad_ids' => $dot_ad_ids,
                    'position' => $position,
                    'user_id' => $uid
                ]);
            }
        }
        return $rst;
    }


    /**
     * @param $type banner | screen
     * @return array
     */
    public function getMaterial($type)
    {
        $rst = [];
        $material_ids = Redis::instance()->get(AdConstants::AD_SC_IDS);
        if ($material_ids) {
            $arr = explode(',', $material_ids);
            foreach ($arr as $k => $id) {
                $material_str = Redis::instance()->get(AdConstants::AD_M_KEY . $id);
                if ($material_str) {
                    $obj = json_decode($material_str);
                    if ($type == 'banner') {
                        if ($obj->ad_type == '0') {
                            // Banner广告
                            array_push($rst, $obj);
                        }
                    } else {
                        if ($obj->ad_type == '1') {
                            //插屏广告
                            array_push($rst, $obj);
                        }
                    }
                }
            }
        }
        return $rst;
    }


    public function getAllAd()
    {
        $rst = [];
        $ad_ids = Redis::instance()->get(AdConstants::AD_P_IDS);
        if ($ad_ids) {
            $arr = explode(',', $ad_ids);
            foreach ($arr as $k => $id) {
                $ad_str = Redis::instance()->get(AdConstants::AD_P_KEY . $id);
                if ($ad_str) {
                    $obj = json_decode($ad_str);
                    if ($obj->show_starttime <= time() && $obj->show_endtime >= time()) {
                        array_push($rst, $obj);
                    }
                }
            }
        }
        return $rst;
    }
}