<?php

namespace App\Service;

use App\Exports\ExportOrder;
use App\Exports\MultiSheetExport;
use App\Model\Employee;
use App\Model\Quantization;
use App\Model\RevenueCost;
use Maatwebsite\Excel\Facades\Excel;

class ExportFileService extends Service
{
    public static $filename = "";

    //导出的方式 0 选择导出的数据 1 查询后 导出指定的数据（最多每次一千条）
    public static $export_type = [
        0,
        1
    ];

    public function exportAll($data,$user){
        if(empty($data['menu_id'])) return [false, '菜单ID不能为空'];
        list($function, $name) = EmployeeService::fillMenu2($data['menu_id'], $user);
        if (empty($function) || ! method_exists(self::class, $function)) return [false, "导出方法不存在,请联系开发"];
        self::$filename = $name;

        $export_type = $data['export_type'] ?? 0;
        if(! isset(self::$export_type[$export_type])) return [false,'导出文件方式错误或者不存在'];
        if(empty($export_type)){
            if(empty($data['id'])) return [false,'请选择导出数据'];
            $search = $data;
        }else{
            if(empty($data['order_search'])) return [false,'搜索条件不能为空'];
            $search = $data['order_search'];
            if(empty($search['page_index'])) return [false,'请选择导出数据的开始页码'];
            if(empty($search['page_size'])) return [false,'请选择导出数据的条数'];
            if($search['page_size'] > 5000) return [false,'请选择导出数据的条数每次最多5000条'];
            $data['order_search']['menu_id'] = $data['menu_id'];
            $search = $data['order_search'];
        }

        list($status, $return) = $this->$function($search,$user);
        if(! $status) return [false, $return];

        return [true, $return];
    }

    private function fillData($data, $column, &$return)
    {
        // 预先创建包含默认值的键数组
        $default = array_fill_keys($column, '');

        foreach ($data as $value) {
            // 提取交集，并用默认值补充缺失的键
            $return[] = array_merge($default, array_intersect_key($value, $default));
        }
    }

    private function fillTotalData($data, $column, &$return){
        $tmp = [];
        foreach ($column as $value){
            $key = $value['key'];
            if(! empty($value['sum']) && isset($data[$value['key']])){
                $decimals = $col['decimals'] ?? 2;
//                $tmp[$value['key']] = $data[$value['key']];

                // 用 number_format 格式化输出（保持字符串形式，避免科学计数）
                $tmp[$key] = number_format((float)$data[$key], $decimals, '.', '');
            }else{
                $tmp[$value['key']] = "";
            }
        }

        $return[] = $tmp;
    }

    public function one($ergs, $user){
        $service = new QuantizationService();
        $ergs['type'] = Quantization::type_one;
        list($status, $model) = $service->quantizationCreateCommon($ergs, $user);
        if(! $status) return [false, $model];

        // 导出数据
        $header_default = $user['e_header_default'];
        $column = array_column($header_default,'key');
        $header = array_column($header_default,'value');

        $detailKeys = ['a', 'b', 'c', 'd', 'e', 'f'];
        $detailLabels = ['维度名称', '维度总分', '总得分', '维度详细名称', '分数', '打分比例'];

        $fullColumn = array_merge($column, $detailKeys);
        $fullHeader = array_merge($header, $detailLabels);

        // 2. 导出逻辑（建议直接返回文件流或路径）
        $exportData = [];

        $employeeMap = Employee::pluck('emp_name', 'id')
            ->toArray();

        $model->with('details')->chunk(200, function ($items) use (&$exportData, $fullColumn, $employeeMap) {
            foreach ($items as $item) {
                $mainRow = $item->toArray();
                $mainRow['crt_name'] = $employeeMap[$mainRow['crt_id']] ?? "";
                $mainRow['crt_time'] =  $mainRow['crt_time'] ? date('Y-m-d H:i:s', $mainRow['crt_time']) : '';
                // 如果该主行没有明细，也要保底导出一行
                if ($item->details->isEmpty()) {
                    $exportData[] = $this->mapRowToColumn($mainRow, $fullColumn);
                    continue;
                }

                // 1. 先取出所有顶级父项 (parent_id == 0)
                $parentDetails = $item->details->where('parent_id', 0);

                foreach ($parentDetails as $parent) {
                    // --- A. 写入父级行 ---
                    $parentRow = $mainRow;
                    $parentRow['a'] = $parent->title;
                    $parentRow['b'] = $parent->quantization_score;
                    $parentRow['c'] = $parent->score;
                    $parentRow['d'] = '';
                    $parentRow['e'] = '';
                    $parentRow['f'] = '';

                    $exportData[] = $this->mapRowToColumn($parentRow, $fullColumn);

                    // --- B. 紧接着查找并写入该父级下的所有子级 ---
                    $children = $item->details->where('parent_id', $parent->id);

                    foreach ($children as $child) {
                        $childRow = $mainRow;
                        // 子级行：a, b, c 字段可以保留父级信息（方便对账），或者留空
                        $childRow['a'] = $parent->title;
                        $childRow['b'] = $parent->quantization_score;
                        $childRow['c'] = $parent->score;

                        // 填充子级特有信息到 d, e, f 列
                        $childRow['d'] = $child->title;
                        $childRow['e'] = $child->score;
                        $childRow['f'] = $child->rate;

                        $exportData[] = $this->mapRowToColumn($childRow, $fullColumn);
                    }
                }
            }
        });

        return [true, $this->saveExportData($exportData, $fullHeader)];
    }

    /**
     * 辅助方法：确保每行数据字段顺序与表头完全一致
     */
    private function mapRowToColumn($data, $columns) {
        $res = [];
        foreach ($columns as $col) {
            $res[$col] = $data[$col] ?? '';
        }
        return $res;
    }

    public function two($ergs, $user){
        $service = new StatisticsService();
        $model = $service->valueStatisticsCommon($ergs, $user);

        // 导出数据
        $return = [];

        $header_default = $user['e_header_default'];
        $column = array_column($header_default,'key');
        $header = array_column($header_default,'value');
        $model->chunk(500,function ($data) use(&$return,$column, $service, $user){
            $data = $data->toArray();
            $list['data'] = $data;

            $list = $service->valueStatisticsFillData($list);
            //返回数据
            $this->fillData($list['data'], $column, $return);
        });

        return [true, $this->saveExportData($return,$header)];
    }

    public function saveExportData($data, $headers, $type = 'default',$file_name = ''){
        if(empty($file_name)) $file_name = self::$filename . "_". date("Y-m-d") . "_". rand(1000,9999);
        $filename =  $file_name . '.' . 'xlsx';
        $bool = Excel::store(new ExportOrder($data,$type,$headers),"/public/export/{$filename}", null, 'Xlsx', []);
        return $filename;
    }

    public function saveExportData2($data,$file_name = ''){
        if(empty($file_name)) $file_name = self::$filename . "_". date("Y-m-d") . "_". rand(1000,9999);
        $filename =  $file_name . '.' . 'xlsx';
        \Maatwebsite\Excel\Facades\Excel::store(new MultiSheetExport($data),"/public/export/{$filename}", null, 'Xlsx', []);

        return $filename;
    }
}