<?php

namespace app\job\transfer\schedule;

use app\model\campus_person_role\CampusPersonRole;
use app\model\resource_sharing\ResourceSharing;
use core\base\BaseJob;
use think\facade\Db;
use think\facade\Log;

/**
 * 自动分配资源
 */
class ResourceAutoAllocation extends BaseJob
{
    /**
     * 执行任务
     */
    public function doJob()
    {
        Log::write('开始自动分配资源');
        
        // 获取待分配的资源
        $resources = $this->getResource();
        if (empty($resources)) {
            Log::write('没有可分配的资源');
            return;
        }
        
        // 获取销售人员
        $salesmen = $this->getSalesman();
        if (empty($salesmen)) {
            Log::write('没有可用的销售人员');
            return;
        }
        
        // 分配资源
        $this->allocateResource($resources, $salesmen);
        
        Log::write('资源分配完成');
    }

    /**
     * 获取销售人员（角色ID为6或7的人员）
     * @return array 销售人员列表
     */
    public function getSalesman()
    {
        Log::write('获取销售人员');
        
        // 获取角色ID为6或7的人员ID
        $salesmen = CampusPersonRole::where('role_id', 'in', [6, 7])
            ->where('deleted_at', 0) // 未删除的记录
            ->field('person_id, role_id')
            ->select()
            ->toArray();
        
        if (empty($salesmen)) {
            Log::write('未找到销售人员');
            return [];
        }
        
        // 获取每个销售人员当前拥有的资源数量
        foreach ($salesmen as &$salesman) {
            $resourceCount = ResourceSharing::where('shared_by', $salesman['person_id'])
                ->count();
            $salesman['resource_count'] = $resourceCount;
        }
        
        // 按资源数量升序排序，资源少的排在前面
        array_multisort(array_column($salesmen, 'resource_count'), SORT_ASC, $salesmen);
        
        Log::write('找到' . count($salesmen) . '个销售人员');
        return $salesmen;
    }

    /**
     * 获取待分配的资源
     * @return array 待分配资源列表
     */
    public function getResource()
    {
        Log::write('获取待分配资源');
        
        // 获取role_id不是6,7的，shared_by是0的资源ID
        $resources = ResourceSharing::where(function ($query) {
                $query->where('role_id', 'not in', [6, 7])
                    ->whereOr('role_id', 'null');
            })
            ->where('shared_by', 0)
            ->field('id, resource_id')
            ->select()
            ->toArray();
        
        Log::write('找到' . count($resources) . '个待分配资源');
        return $resources;
    }

    /**
     * 按照销售人员的资源拥有情况分配资源
     * @param array $resources 待分配的资源列表
     * @param array $salesmen 销售人员列表
     */
    public function allocateResource($resources, $salesmen)
    {
        Log::write('按照销售人员的资源拥有情况分配资源');
        
        if (empty($resources) || empty($salesmen)) {
            Log::write('没有资源或销售人员，无法分配');
            return;
        }
        
        // 记录分配结果
        $allocations = [];
        
        // 开始分配
        foreach ($resources as $resource) {
            // 重新获取销售人员的资源数量排序，确保每次分配都是给最少资源的人
            $currentSalesmen = $this->refreshSalesmenResourceCount($salesmen);
            
            if (empty($currentSalesmen)) {
                Log::write('没有可用的销售人员');
                break;
            }
            
            // 选择资源最少的销售人员
            $targetSalesman = $currentSalesmen[0];
            
            // 插入新的资源共享记录
            try {
                Db::startTrans();
                
                // 插入新的资源分配记录
                $insertData = [
                    'resource_id' => $resource['resource_id'],
                    'user_id' => $targetSalesman['person_id'],
                    'role_id' => $targetSalesman['role_id'],
                    'shared_by' => $targetSalesman['person_id'], // shared_by是接收资源的人员ID
                    'shared_at' => date('Y-m-d H:i:s')
                ];
                
                ResourceSharing::create($insertData);
                
                // 记录分配结果
                $allocations[] = [
                    'resource_id' => $resource['resource_id'],
                    'salesman_id' => $targetSalesman['person_id']
                ];
                
                Db::commit();
                
                Log::write('资源ID：' . $resource['resource_id'] . ' 分配给销售人员ID：' . $targetSalesman['person_id']);
                
            } catch (\Exception $e) {
                Db::rollback();
                Log::write('资源分配失败：' . $e->getMessage());
            }
        }
        
        Log::write('成功分配' . count($allocations) . '个资源');
    }
    
    /**
     * 刷新销售人员的资源数量并重新排序
     * @param array $salesmen 销售人员列表
     * @return array 更新后的销售人员列表
     */
    private function refreshSalesmenResourceCount($salesmen)
    {
        if (empty($salesmen)) {
            return [];
        }
        
        foreach ($salesmen as &$salesman) {
            $resourceCount = ResourceSharing::where('shared_by', $salesman['person_id'])
                ->count();
            $salesman['resource_count'] = $resourceCount;
        }
        
        // 按资源数量升序排序
        array_multisort(array_column($salesmen, 'resource_count'), SORT_ASC, $salesmen);
        
        return $salesmen;
    }
}