# 在 Laravel框架 下，還有 Xunsearch 生成的骨架程式碼基礎上，測試 Xunsearch 基礎用法；程式碼匯入資料、更新、刪除、搜尋，基本功能就有了；

<?php

namespace App\Http\Controllers;

use App\Post;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Pagination\Paginator;

//載入XS.php
require_once "../vendor/xunsearch/lib/XS.php";

 
class XunsearchController extends Controller
{
    public function __construct()
    {

    }

    /** 
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index(Request $request)
    {
        $keyword = !empty($request->all()[‘wd‘]) ? $request
 
->all()[‘wd‘] : ‘‘;
        $page = !empty($request->all()[‘page‘]) ? $request->all()[‘page‘] : 1;

        // TODO xunsearch 迅搜測試
        if($keyword){
            $count = $total = $search_cost = 0;
            $docs = $related = $corrected = $hot = array();
            $error = $pager = ‘‘;

            
 
try {
                $xs = new \XS(‘laravel‘); //// 建立 XS 物件
                $index = $xs->index; // 獲取索引物件
                $search = $xs->search; // 獲取搜尋物件

                // TODO 清空索引
                $index->clean(); die;

                $arr = Post::all()->toArray();
                foreach ($arr as $v){
                    $document = new \XSDocument($v);

                    // TODO 新增資料，不管是否已經存在相同主鍵資料
                    $index->add($document);

                    // TODO 更新資料，同主鍵則更新資料，不同則新增（推薦）
                    $index->update($document);

                    // TODO 刪除資料，傳入主鍵，單個可直接傳，多個放陣列中，例如 array(1,3,5)
                    if(in_array($v[‘id‘],[2,4])){
                        // 刪除掉主鍵為 2,4的資料
                        $index->del($v[‘id‘]);
                    }
                }

                // 同步索引資料
                $index->flushIndex();

            } catch (\XSException $e) {
                echo $e->getMessage() . PHP_EOL;
                exit;
            }


            $listRows = 3;
            $search->setLimit($listRows,$listRows*($page-1)); // 設定偏移量

            $search_begin = microtime(true);
            $docs = $search->setQuery($keyword)->search(); // 查詢
            $search_cost = microtime(true) - $search_begin;

//            $count = $search->count($keyword); // // 直接檢索關鍵詞的數量
            $count = $search->getLastCount(); // 獲取搜尋總數，這個和count()的不一樣是不用傳入搜尋詞
            $total = $search->getDbTotal();

            // TODO 返回糾正後的關鍵片語成的陣列
            if ($count < 1 || $count < ceil(0.001 * $total)) {
                $corrected = $search->getCorrectedQuery();
            }

            $hot = $search->getHotQuery();
            $related = $search->getRelatedQuery($keyword,5);

            $post = [];
            foreach ($docs as $key=>$doc){
                $post[$key]->id = $doc->id; // 高亮處理標題
                $post[$key]->title = $search->highlight($doc->title); // 高亮處理標題
                $post[$key]->body = $search->highlight($doc->body); // 高亮處理標題
            }

            $paginator = new LengthAwarePaginator($post,$count,$listRows,$page, [
                ‘path‘ => Paginator::resolveCurrentPath(),‘pageName‘ => ‘page‘,
            ]);

            // TODO 新增引數到分頁連結
            $paginator->appends([‘wd‘=>$keyword]);

            $data = array(
                ‘post‘=>$post,‘paginator‘=>$paginator,‘count‘ => $count,‘total‘ => $total,‘search_cost‘ => $search_cost,‘corrected‘ => $corrected,‘hot‘ => $hot,‘related‘ => $related,
            );
            return view(‘post.index‘,$data);
        }
}

# 功能測試效果: