<?php

namespace App\Http\Controllers;

use App\Models\ConstFlow;
use Illuminate\Http\Request;
use App\Services\Admin\ConstFlowService;

class PrintController extends Controller
{
    public function showConst(Request $request)
    {
        $name = '';
        $time = now()->format('Y-m-d H:i:s');
        $sn = '';
        //默认list最少N行，最多N行；
        $list = [];
        $total = 0;
        $bigTotal = '';
        $adminName = '';
        $timeZone = '';

        $flow = ConstFlow::find($request->input('id', 0));
        if($flow){
            $rows = (new ConstFlowService())->makeFeelist($flow);
            $flow->load(['oldman', 'adminuser']);
            $name = $flow->oldman->name;
            $time = $flow->created_at->format('Y-m-d H:i:s');
            $sn = $flow->sn;
            $ukeys = explode(',', $request->input('ukeys', ''));
            $i = 0;
            foreach($rows as $item){
                
                if($i<4){
                    if(in_array($item['ukey'], $ukeys)){
                        $i++;
                        $list[] = $item; 
                    }
                }else{
                    break;
                }
            }
            for($i; $i<4; $i++){
                $list[] = [
                    'ukey' => '',
                    'name' => '',
                    'fee_name' => '',
                    'fee_value' => 0,
                ];
            }
            
            if(count($list) > 0){
                $total = collect($list)->sum('fee_value');
                if($total > 0){
                    $bigTotal = $this->num2chinese($total);
                }else{
                    $bigTotal = '负'.$this->num2chinese(abs($total));
                }
            }
            $adminName = $flow->adminuser->name;
            $timeZone = substr($flow->start_at, 0, 10).'至'.substr($flow->end_at, 0, 10);
        }

        return view('print-const', compact('name', 'time', 'sn', 'list', 'total', 'bigTotal', 'timeZone', 'adminName'));
    }


    private function num2chinese($num) {
        $cnNums = array(
            "", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"
        );
        $cnIntUnits = array("", "拾", "佰", "仟");
        $cnIntRadice = array("", "万", "亿", "兆");
        $cnDecUnits = array("角", "分");
        $cnInteger = "整";
    
        $intStr = (string)$num;
        $len = strlen($intStr);
        if ($len > 15 || $num < 0) {
            return false; // 超出处理范围
        }
    
        if ($num == 0) {
            return "零元整";
        }
    
        $zeroCount = 0;
        $outChinese = "";
        for ($i = 0; $i < $len; $i++) {
            $idx = $len - $i - 1;
            $thisNum = (int)$intStr[$idx];
            if ($thisNum == 0) {
                $zeroCount++;
                continue;
            }
            if ($zeroCount > 0) {
                $outChinese = "零" . $outChinese; // 处理零
            }
            $zeroCount = 0;
            $outChinese = $cnNums[$thisNum] . $cnIntUnits[$i % 4] . $outChinese;
            if ($i % 4 == 0) {
                $outChinese = $cnIntRadice[$i / 4] . $outChinese;
            }
        }
    
        if ($zeroCount > 0) {
            $outChinese = "零" . $outChinese; // 处理最后的零
        }
    
        $outChinese .= "元";
    
        // 处理小数部分
        if (strpos($num, '.') !== false) {
            $decPart = substr($num, strpos($num, '.') + 1);
            for ($i = 0, $len = strlen($decPart); $i < $len; $i++) {
                $thisNum = (int)$decPart[$i];
                if ($thisNum == 0) {
                    continue;
                }
                $outChinese .= $cnNums[$thisNum] . $cnDecUnits[$i];
            }
        } else {
            $outChinese .= "整";
        }
    
        return $outChinese;
    }
}