<?php

namespace app\admin\controller;

use PHPExcel;
use think\Db;
use think\Loader;
use think\Validate;

Loader::import('phpexcel.Classes.PHPExcel', EXTEND_PATH);
Loader::import('phpexcel.Classes.PHPExcel.IOFactory.PHPExcel_IOFactory');

class ProductPurchaseLinks extends BaseController
{
    /**
     * 列表
     */
    public function index()
    {
        $list = Db::name('product_purchase_links')->alias('links')
            ->field([
                'links.id',
                'links.product_id',
                'product.name',
                'product.brand_id' => 'spu',
                'links.platform_id',
                'links.link',
                'product.is_show'
            ])
            ->join('product', 'product.id=links.product_id')
            ->where(function ($query) {
                $query->where('product.is_show', '=', 0)
                    ->where('links.country_code', '=', $this->country_code);
                if (request()->has('skeyword')) {
                    $query->where(function ($q) {
                        $keyword = request()->get('skeyword');
                        $q->where('product.brand_id', 'like',  '%' . $keyword . '%')
                            ->whereOr('product.name', 'like',  '%' . $keyword . '%');
                    });
                }
            })
            ->order('links.id', 'sort')
            ->group('links.product_id')
            ->paginate(10);

        $data = [];
        foreach ($list as $val) {
            if (empty($data[$val['spu']])) {
                $val['rowspan'] = 1;
                $data[$val['spu']] = $val;
            }
        }
        if (!$list->isEmpty()) {
            $others = Db::name('product_purchase_links')->alias('links')
                ->field([
                    'links.id',
                    'product.name',
                    'product.brand_id' => 'spu',
                    'links.platform_id',
                    'links.link',
                    'product.is_show'
                ])
                ->join('product', 'product.id=links.product_id')
                ->where('links.country_code', '=', $this->country_code)
                ->where('links.id', 'not in', array_column($list->items(), 'id'))
                ->where('links.product_id', 'in', array_column($list->items(), 'product_id'))
                ->select();
            foreach ($others as $val) {
                if (!empty($data[$val['spu']]) && $data[$val['spu']]['id'] != $val['id']) {
                    if (empty($data[$val['spu']]['children'])) {
                        $data[$val['spu']]['children'] = [];
                    }
                    $data[$val['spu']]['children'][] = $val;
                    $data[$val['spu']]['rowspan'] = count($data[$val['spu']]['children']) + 1;
                }
            }
        }

        $this->assign('list', $data);
        $this->assign('page', $list->render());

        $platforms = Db::name('product_purchase_link_platforms')
            ->field(['id', 'platform'])
            ->where('id', '>', 0)
            ->where('country_code', '=', $this->country_code)
            ->select();
        $this->assign('platforms', $platforms);

        return $this->fetch();
    }

    /**
     * 更新
     */
    public function update()
    {
        $post = request()->post();
        if (empty($post['id'])) {
            return $this->error('请确认操作数据');
        }
        $id = $post['id'];
        unset($post['id']);

        // 验证链接
        if (!empty($post['link'])) {
            $validate = new Validate([
                'link' => 'url|max:255'
            ], [
                'link.url' => '连接地址格式错误',
                'link.max' => '连接址不能超过255个字符'
            ]);
            if (!$validate->check($post)) {
                return $this->error($validate->getError());
            }
        }

        // 验证平台
        if (!empty($post['platform_id'])) {
            $proid = Db::name('product_purchase_links')->where('id', '=', $id)->value('product_id');
            $exists = Db::name('product_purchase_links')
                ->where('product_id', '=', $proid)
                ->where('platform_id', '=', $post['platform_id'])
                ->value('id');
            if ($exists) {
                $platform = Db::name('product_purchase_link_platforms')
                    ->where('id', '=', $post['platform_id'])
                    ->value('platform');
                return $this->error(sprintf('该型号已存在【%s】链接', $platform));
            }
        }
        $ret = Db::name('product_purchase_links')->where('id', '=', $id)->update($post);
        if (!$ret) {
            return $this->error('操作失败');
        }

        return $this->success('操作成功');
    }

    /**
     * 导入
     */
    public function import()
    {
        ini_set('max_execution_time', '0');

        $file = request()->file('file');
        if ($file->getSize() > 20 * 1024 * 1024) {
            return $this->error('上传文件不能超过20M');
        }

        // 创建读取器
        $reader = \PHPExcel_IOFactory::createReader('Excel2007');

        // 加载表格
        $spreadsheet = $reader->load($file->getRealPath());

        // 读取sheet
        $sheet = $spreadsheet->getSheet(0);

        $rows  = $sheet->getHighestRow();    //总行数

        $xlsx = [];
        for ($i = 2; $i <= $rows; $i++) {
            // $xlsx[行号] = 数据
            $xlsx[$i] = [
                'spu'      => $sheet->getCellByColumnAndRow(0, $i)->getValue(),
                'platform' => $sheet->getCellByColumnAndRow(1, $i)->getValue(),
                'link'     => $sheet->getCellByColumnAndRow(2, $i)->getValue(),
            ];
        }

        // 错误提示
        $errors = [];

        // 验证成功数据
        $valid_data = [];

        // 购买平台数据
        $platforms = Db::name('product_purchase_link_platforms')
            ->where('id', '>', 0)
            ->where('country_code', '=', $this->country_code)
            ->column('id', 'platform');

        $xlsx_chunks = array_chunk($xlsx, 500, true);
        // 分批次验证 spu
        foreach ($xlsx_chunks as $x) {
            $spus = array_column($x, 'spu');
            $products = Db::name('product')
                ->where('brand_id', 'in', $spus)
                ->where('country_code', '=', $this->country_code)
                ->column('id', 'brand_id');
            if (empty($products)) {
                $errors[] = sprintf('第%s行, 型号不存在', implode(',', array_keys($x)));
                continue;
            }

            $items = [];
            foreach ($x as $k => $v) {
                if (empty($products[$v['spu']])) {
                    $errors[] = sprintf('第%s行, 型号不存在', $k);
                    continue;
                }
                if (empty($platforms[$v['platform']])) {
                    $errors[] = sprintf("第%s行, 平台名称错误", $k);
                    continue;
                }
                if (
                    !empty($v['link']) &&
                    !\think\helper\Str::startsWith($v['link'], 'http://') &&
                    !\think\helper\Str::startsWith($v['link'], 'https://')
                ) {
                    $errors[] = sprintf("第%s行, 链接地址格式错误", $k);
                    continue;
                }
                $items[] = [
                    'product_id'   => $products[$v['spu']],
                    'platform_id'  => $platforms[$v['platform']],
                    'link'         => $v['link'],
                    'country_code' => $this->country_code,
                ];
            }
            if (!empty($items)) {
                $valid_data[] = $items;
            }
        }

        if (!empty($valid_data)) {
            // 组装 SQL
            $sql = 'REPLACE INTO `cod_product_purchase_links`(`id`, `product_id`, `platform_id`, `link`, `country_code`) VALUES ';
            foreach ($valid_data as $val) {
                $proids = array_column($val, 'product_id');
                $links  = Db::name('product_purchase_links')
                    ->field(['id', 'product_id', 'platform_id'])
                    ->where('product_id', 'in', $proids)
                    ->where('country_code', '=', $this->country_code)
                    ->select();
                if (!empty($links)) {
                    $links_mapping = [];
                    foreach ($links as $l) {
                        $links_mapping[$l['product_id'] . "_" . $l['platform_id']] = $l['id'];
                    }
                }
                foreach ($val as $v) {
                    $id = null;
                    if (!empty($links_mapping[$v['product_id'] . '_' . $v['platform_id']])) {
                        $id = $links_mapping[$v['product_id'] . '_' . $v['platform_id']];
                    }
                    $sql .= sprintf('(%d, %d, %d, "%s", "%s"),', $id, $v['product_id'], $v['platform_id'], $v['link'], $v['country_code']);
                }
            }

            Db::execute(\think\helper\Str::substr($sql, 0, \think\helper\Str::length($sql) - 1));
        }

        if (!empty($errors)) {
            return $this->error(implode(";\n", $errors));
        }

        return $this->success('导入成功');
    }

    /**
     * 导出
     */
    public function export()
    {
        $data = Db::name('product_purchase_links')->alias('links')
            ->field([
                'product.brand_id' => 'spu',
                'platforms.platform',
                'links.link'
            ])
            ->join('product_purchase_link_platforms platforms', 'platforms.id=links.platform_id')
            ->join('product', 'product.id=links.product_id')
            ->where(function ($query) {
                $query->where('product.is_show', '=', 0)->where('links.country_code', '=', $this->country_code);
                if (request()->has('skeyword')) {
                    $query->where(function ($q) {
                        $keyword = request()->get('skeyword');
                        $q->where('product.brand_id', 'like',  '%' . $keyword . '%')
                            ->whereOr('product.name', 'like',  '%' . $keyword . '%');
                    });
                }
            })
            ->select();

        $excel = new \PHPExcel();
        $excel->getProperties()->setCreator("Call of Duty")
            ->setLastModifiedBy("Call of Duty")
            ->setTitle("Office 2007 XLSX Cod Document")
            ->setSubject("Office 2007 XLSX Cod Document")
            ->setDescription("Cod document for Office 2007 XLSX, generated using PHP classes.")
            ->setKeywords("office 2007 openxml php")
            ->setCategory("Cod result file");
        $excel->createSheet();

        $excel->getActiveSheet()->setCellValueByColumnAndRow(0, 1, '型号');
        $excel->getActiveSheet()->setCellValueByColumnAndRow(1, 1, '平台');
        $excel->getActiveSheet()->setCellValueByColumnAndRow(2, 1, '链接');
        foreach ($data as $i => $v) {
            $excel->getActiveSheet()->setCellValueByColumnAndRow(0, $i + 2, $v['spu']);
            $excel->getActiveSheet()->setCellValueByColumnAndRow(1, $i + 2, $v['platform']);
            $excel->getActiveSheet()->setCellValueByColumnAndRow(2, $i + 2, $v['link']);
        }

        ob_end_clean();

        $writer = \PHPExcel_IOFactory::createWriter($excel, 'Excel2007');
        header("Content-Type: application/force-download");
        header("Content-Type: application/octet-stream"); //文件流
        header("Content-Type: application/download"); //下载文件
        header('Content-Disposition: attachment;filename="' . date('YmdHis') . '-' . $this->country_code . '.xlsx"');
        header("Content-Transfer-Encoding: binary");
        header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
        header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); //上一次修改时间
        header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
        header("Pragma: no-cache"); //不缓存页面
        $writer->save('php://output');

        exit;
    }
}