<?php

namespace app\common\service;

use app\common\model\FinPaymentStock;
use app\common\model\FinReceipt;
use app\common\validate\FinPaymentApplyValidate;
use app\common\traits\crud\CrudServiceTrait;
use app\common\model\FinPaymentApply;
use support\Redis;
use support\Request;

class FinPaymentApplyService
{

    use CrudServiceTrait;

    /**
     * 指定当前要操作的模型
     */
    protected string $modelClass = FinPaymentApply::class;

    /**
     * 验证器
     */
    protected $validator = FinPaymentApplyValidate::class;

    /**
     * 获取验证器
     */
    public function getValidator()
    {
        return new $this->validator;
    }

    /**
     * 构建查询条件
     */
    protected function buildQueryConfig(Request $request, string $scene = 'index'): array
    {
        $p = $request->all();

        $config = [];
        $config['model'] = $this->modelClass;
        switch ($scene) {
            case 'index':
                // ====== ====== 排序 ====== ======
                $config['order']['id'] = 'desc';

                // ====== ====== 筛选 ====== ======
                // 汇款国家
                if (isset($p['country_id']) && !empty($p['country_id'])) {
                    $config['where']['country_id'] = $p['country_id'];
                }

                // 收款账户筛选
                if (isset($p['account_id']) && !empty($p['account_id'])) {
                    $config['where']['account_id'] = $p['account_id'];
                }

                // 入账资料超时
                if (isset($p['scene']) && $p['scene'] == 'file_timeout') {
                    $config['where']['claimed_at'] = ['between', [1, time()-24*60*60]];
                }

                // 关键字
                if (isset($p['keyword']) && $p['keyword']) {
                    $k = '%' . $p['keyword'] . '%';
                    $config['orWhere'][] = ['remitter', 'like', $k];
                }
                break;
            case 'show':
                $config['where']['id'] = $p['id'];
                break;
            case 'update':
            case 'destroy':
                $config['where']['id'] = $p['id'];
                break;
            case 'store':
                break;
        }

        return $config;
    }

    public function beforeServiceStore($data, Request $request)
    {
        $data['apply_no'] = $this->generateUniqueApplyNo();
        $data['doc_user_id'] = $request->user->uid;
        $data['submit_files'] = json_encode($data['submit_files']);
        redis::set('stock_' . $data['doc_user_id'], json_encode($request->post('stock')), 'EX', 30);
        unset($data['stock']);
        if($data['submit_files'] == '[]' || $data['submit_files'] == '{}' )
            $data['submit_files'] = '';
        return $data;
    }


    public function afterServiceStore($res)
    {
        $data = [
            'payment_apply_id' => $res['id'],
        ];
        $piStock = json_decode(redis::get('stock_' . $res['doc_user_id']), true);
        redis::del('stock' . $res['doc_user_id']);
        foreach ($piStock as $stock) {
            foreach ($stock['stock_id'] as $v) {
                $data['stock_id'] = $v;
                $data['pi_no'] = $stock['pi_on'];
                FinPaymentStock::create($data);
            }
        }
    }

    public function beforeServiceUpdate($data, Request $request)
    {
        $data['submit_files'] = json_encode($data['submit_files']);
        if($data['submit_files'] == '[]' || $data['submit_files'] == '{}' )
            $data['submit_files'] = '';
        return $data;
    }

    /**
     * 生成唯一的付款申请编码
     * 格式：PA + 日期 + 6位字母数字组合
     *
     * @return string 唯一编码
     */
    public function generateUniqueApplyNo()
    {
        $chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
        $maxAttempts = 10; // 防止无限循环
        $secondChar = 'PA' . date('Ymd');

        for ($attempt = 0; $attempt < $maxAttempts; $attempt++) {
            // 生成后6位随机字符
            $suffix = '';
            for ($i = 0; $i < 6; $i++) {
                $suffix .= $chars[rand(0, strlen($chars) - 1)];
            }

            $applyNo = $secondChar . $suffix;

            // 检查是否已存在
            $existing = FinPaymentApply::where('apply_no', $applyNo)->first();
            if (!$existing) {
                return $applyNo;
            }
        }

        // 如果1000次尝试后仍然重复，使用时间戳确保唯一性
        $timestamp = substr(time(), -6);
        return $secondChar . $timestamp;
    }

    /**
     * 根据相似度排序付款记录
     * @param Request $request
     * @return \Illuminate\Contracts\Pagination\LengthAwarePaginator|\Illuminate\Pagination\LengthAwarePaginator
     */
    public function complexQueryIndex(Request $request)
    {
        $limit = (int)$request->get('size', 15);
        $page  = (int)$request->get('current',  1);
        $param = $request->all();

        $where = [];
        $orWhere = [];

        // 汇款国家
        if (isset($param['country_id']) && !empty($param['country_id'])) {
            $where[] = ['country_id', $param['country_id']];
        }
        // 收款账户筛选
        if (isset($param['account_id']) && !empty($param['account_id'])) {
            $where[] = ['account_id', $param['account_id']];
        }

        // 入账资料超时
        if (isset($param['scene']) && $param['scene'] == 'file_timeout') {
            $where[] = ['submit_files', ''];
            $where[] = ['claimed_at', '<', time()-24*60*60];
            $where[] = ['claimed_at', '>', 1];
        }

        // 关键字
        if (isset($param['keyword']) && $param['keyword']) {
            $k = '%' . $param['keyword'] . '%';
            $where[] = ['remitter', 'like', $k];
        }

        // 构建查询
        $query = $this->modelClass::where($where);

        // 是否已关联收款记录的筛选
        $correlation = $param['correlation']??'';
        if ($correlation === 'receipt') { //已关联
            $query->whereHas('receipt');
        } elseif ($correlation === 'unbind') { //未关联
            $query->whereDoesntHave('receipt');
        }

        if ((isset($param['scene']) && $param['scene'] == 'list') || empty($param['receipt_id'])) {
            return $query->orderBy('id','desc')->paginate($limit, ['*'], 'page', $page);
        }

        $receipt = FinReceipt::where('id', $param['receipt_id'])->first();
        $account_id = $receipt->account_id;
        $currency_id = $receipt->currency_id;
        $remitter = $receipt->remitter;
        $amount = $receipt->amount;

        // 计算十天前的时间戳
        $sevenDaysAgo = time() - (10 * 24 * 60 * 60);
        
        // 构建相似度排序逻辑
        $similarityOrder = [];
        
        // 如果有传入参数，计算相似度
        if (!empty($account_id)) {
            $similarityOrder[] = "CASE WHEN account_id = {$account_id} THEN 0 ELSE 1 END";
        }
        
        if (!empty($currency_id)) {
            $similarityOrder[] = "CASE WHEN currency_id = {$currency_id} THEN 0 ELSE 1 END";
        }

        if (!empty($remitter)) {
            $similarityOrder[] = "CASE WHEN remitter = {$remitter} THEN 0 ELSE 1 END";
        }

        if (!empty($amount)) {
            $amount = (float)$amount;
            $similarityOrder[] = "ABS(amount - {$amount}) ASC";
            $similarityOrder[] = "CASE WHEN (ABS(amount - {$amount}) / {$amount} * 100) <= 5 THEN 0 ELSE 1 END";
        }
        
        // 构建排序SQL
        $orderByClause = "";
        if (!empty($similarityOrder)) {
            $orderByClause = "CASE 
                WHEN created_at >= {$sevenDaysAgo} THEN 
                    (" . implode(' + ', $similarityOrder) . ")
                ELSE 0
            END ASC, ";
        }
        
        $orderByClause .= "CASE 
            WHEN created_at > {$sevenDaysAgo} THEN id 
            ELSE 999999 
        END DESC, ";

        $orderByClause .= "id DESC";
        
        $query->orderByRaw($orderByClause);

        return $query->paginate($limit, ['*'], 'page', $page);
    }

}