<?php

namespace App\Service;

use App\Model\Archive;
use Illuminate\Support\Facades\DB;

class ArchiveService extends Service
{
    public function archiveAdd($data,$user){
        list($status,$msg) = $this->archiveRule($data,$user);
        if(!$status) return [$status,$msg];

        try {
            DB::beginTransaction();

            $model = new Archive();
            $model->month = $data['month'];
            $model->crt_id = $user['id'];
            $model->top_depart_id = $data['top_depart_id'];
            $model->save();

            DB::commit();
        }catch (\Exception $exception){
            DB::rollBack();
            return [false,$exception->getMessage()];
        }

        return [true,''];
    }

    public function archiveDel($data, $user){
        if(empty($data['id']) || ! is_array($data['id'])) return [false,'ID不能为空或格式错误'];

        Archive::whereIn('id', $data['id'])->update([
            'del_time'=>time()
        ]);

        return [true,''];
    }

    public function archiveCommon($data,$user, $field = []){
        if(empty($field)) $field = Archive::$field;

        $model = Archive::TopClear($user,$data);
        $model = $model->where('del_time',0)
            ->select($field)
            ->orderby('id', 'desc');

        if(! empty($data['time'][0]) && ! empty($data['time'][1])) {
            $return = $this->changeDateToTimeStampAboutRange($data['time']);
            $model->where('month','>=',$return[0]);
            $model->where('month','<=',$return[1]);
        }

        return $model;
    }

    public function archiveList($data, $user){
        $model = $this->archiveCommon($data, $user);
        $list = $this->limit($model,'',$data);
        $list = $this->fillArchiveList($list);

        return [true, $list];
    }

    public function fillArchiveList($data){
        if(empty($data['data'])) return $data;

        $emp = (new EmployeeService())->getEmployeeMap(array_unique(array_column($data['data'],'crt_id')));
        foreach ($data['data'] as $key => $value){
            $data['data'][$key]['crt_time'] = $value['crt_time'] ? date('Y-m-d H:i:s',$value['crt_time']) : '';
            $data['data'][$key]['month'] = $value['month'] ? date('Y-m',$value['month']) : '';
            $data['data'][$key]['crt_name'] = $emp[$value['crt_id']] ?? '';
        }

        return $data;
    }

    public function archiveRule(&$data,$user, $add = true){
        if(empty($data['month'])) return [false, '年月不能为空'];
        $data['month'] = $this->changeDateToDate($data['month']);
        $data['top_depart_id'] = $user['top_depart_id'];

        $bool = Archive::where('del_time',0)
            ->where('top_depart_id', $data['top_depart_id'])
            ->where('month', $data['month'])
            ->exists();

        if($bool) return [false, "年月" . date("Y-m") . "已归档"];

        return [true, ''];
    }

    public static function isArchive($months, $user)
    {
        // 1. 统一转为数组处理
        $monthArray = is_array($months) ? $months : [$months];

        // 2. 将所有传入的时间转换成“当月第一天”的时间戳并去重
        $normalizedMonths = array_unique(array_map(function($time) {
            // 如果传的是 2026-03 这种字符串，先转时间戳
            $timestamp = is_numeric($time) ? $time : strtotime($time);
            return strtotime(date('Y-m-01', $timestamp));
        }, $monthArray));

        // 3. 批量查询数据库中存在的已归档月份
        $archivedMonths = Archive::where('del_time', 0)
            ->where('top_depart_id', $user['top_depart_id'])
            ->whereIn('month', $normalizedMonths)
            ->pluck('month')
            ->toArray();

        // 4. 如果查询结果不为空，说明命中了归档
        if (!empty($archivedMonths)) {
            // 把命中的月份转回人类可读格式展示给用户
            $errorMonths = array_map(function($ts) {
                return date('Y-m', $ts);
            }, $archivedMonths);

            return [false, "操作失败：月份 [" . implode(',', $errorMonths) . "] 已归档锁定。"];
        }

        return [true, ''];
    }

    public static function fillIsArchive($months, $user)
    {
        // 1. 统一转为数组并去重（避免重复计算）
        $rawMonths = is_array($months) ? array_unique($months) : [$months];

        // 2. 建立 原始输入 -> 归一化时间戳 的中间映射
        $lookup = [];
        foreach ($rawMonths as $rawTime) {
            $timestamp = is_numeric($rawTime) ? (int)$rawTime : strtotime($rawTime);
            // 归一化为当月1号用于数据库对比
            $lookup[$rawTime] = strtotime(date('Y-m-01', $timestamp));
        }

        // 3. 获取所有需要查询的归一化月份（去重后）
        $normalizedToQuery = array_unique(array_values($lookup));

        // 4. 批量查询数据库
        $dbArchived = Archive::where('del_time', 0)
            ->where('top_depart_id', $user['top_depart_id'])
            ->whereIn('month', $normalizedToQuery)
            ->pluck('month')
            ->toArray();

        // 转换成 Set 结构（以时间戳为键），提高后续查询性能
        $dbArchivedSet = array_flip($dbArchived);

        // 5. 构建最终 Map：原始时间戳 => 布尔值
        $archiveMap = [];
        foreach ($lookup as $rawTime => $normalizedTs) {
            // 只要归一化后的时间戳在数据库里，原始时间戳对应的状态就是 true
            $archiveMap[$rawTime] = isset($dbArchivedSet[$normalizedTs]);
        }

        return $archiveMap;
    }
}