<?php

namespace app\common\model;

use think\Model;

/**
 * 流量分配记录表模型类
 * 表名：ck_traffic_pool_allot_record
 * 用途：记录流量的分配历史
 */
class TrafficPoolAllotRecord extends Model
{
    // 设置数据表名
    protected $name = 'traffic_pool_allot_record';

    // 主键
    protected $pk = 'id';

    // 自动写入时间戳
    protected $autoWriteTimestamp = true;
    protected $createTime = 'createTime';
    protected $updateTime = 'updateTime';

    // 分配类型常量
    const ALLOT_TYPE_FIRST = 1;      // 首次分配
    const ALLOT_TYPE_REASSIGN = 2;   // 重新分配
    const ALLOT_TYPE_RECYCLE = 3;    // 回收后分配

    // 状态常量
    const STATUS_ACTIVE = 1;     // 生效中
    const STATUS_EXPIRED = 2;    // 已过期
    const STATUS_RECYCLED = 3;   // 已回收

    /**
     * 关联公司流量详情
     */
    public function poolCompany()
    {
        return $this->belongsTo(TrafficPoolCompany::class, 'poolCompanyId', 'id');
    }

    /**
     * 创建分配记录
     * @param int $poolCompanyId
     * @param string $identifier
     * @param int $companyId
     * @param string $toWechatId
     * @param int $toAccountId
     * @param int $toUserId
     * @param int $expireDays
     * @param int $operatorId
     * @param array $fromInfo [fromWechatId, fromAccountId, fromUserId]
     * @return static
     */
    public static function createAllotRecord(
        int $poolCompanyId,
        string $identifier,
        int $companyId,
        string $toWechatId,
        int $toAccountId = null,
        int $toUserId = null,
        int $expireDays = 30,
        int $operatorId = null,
        array $fromInfo = []
    ) {
        // 判断分配类型
        $existRecord = self::where('poolCompanyId', $poolCompanyId)
            ->where('status', self::STATUS_ACTIVE)
            ->find();
        
        $allotType = self::ALLOT_TYPE_FIRST;
        if ($existRecord) {
            // 将原记录设为已回收
            $existRecord->save([
                'status' => self::STATUS_RECYCLED,
                'updateTime' => time()
            ]);
            $allotType = self::ALLOT_TYPE_REASSIGN;
        }

        // 检查之前是否有过分配记录（判断是否回收后分配）
        $hasHistoryRecord = self::where('poolCompanyId', $poolCompanyId)
            ->where('status', 'in', [self::STATUS_EXPIRED, self::STATUS_RECYCLED])
            ->count();
        if ($hasHistoryRecord && $allotType === self::ALLOT_TYPE_FIRST) {
            $allotType = self::ALLOT_TYPE_RECYCLE;
        }

        $expireTime = $expireDays > 0 ? time() + ($expireDays * 86400) : null;

        $record = self::create([
            'poolCompanyId' => $poolCompanyId,
            'identifier' => $identifier,
            'companyId' => $companyId,
            'allotType' => $allotType,
            'fromWechatId' => $fromInfo['fromWechatId'] ?? null,
            'fromAccountId' => $fromInfo['fromAccountId'] ?? null,
            'fromUserId' => $fromInfo['fromUserId'] ?? null,
            'toWechatId' => $toWechatId,
            'toAccountId' => $toAccountId,
            'toUserId' => $toUserId,
            'expireDays' => $expireDays,
            'expireTime' => $expireTime,
            'status' => self::STATUS_ACTIVE,
            'operatorId' => $operatorId,
            'createTime' => time(),
        ]);

        // 更新公司流量详情表的归属信息
        TrafficPoolCompany::where('id', $poolCompanyId)->update([
            'ownerWechatId' => $toWechatId,
            'ownerAccountId' => $toAccountId,
            'ownerUserId' => $toUserId,
            'allocateStatus' => TrafficPoolCompany::ALLOCATE_STATUS_ALLOCATED,
            'allocateTime' => time(),
            'expireTime' => $expireTime,
            'updateTime' => time()
        ]);

        return $record;
    }

    /**
     * 回收分配
     * @param int $poolCompanyId
     * @param int $operatorId
     * @return bool
     */
    public static function recycleAllot(int $poolCompanyId, int $operatorId = null)
    {
        // 更新当前生效的分配记录
        $activeRecord = self::where('poolCompanyId', $poolCompanyId)
            ->where('status', self::STATUS_ACTIVE)
            ->find();
        
        if ($activeRecord) {
            $activeRecord->save([
                'status' => self::STATUS_RECYCLED,
                'updateTime' => time()
            ]);
        }

        // 更新公司流量详情表
        return TrafficPoolCompany::where('id', $poolCompanyId)->update([
            'ownerWechatId' => null,
            'ownerAccountId' => null,
            'ownerUserId' => null,
            'allocateStatus' => TrafficPoolCompany::ALLOCATE_STATUS_RECYCLED,
            'expireTime' => null,
            'updateTime' => time()
        ]);
    }

    /**
     * 获取流量的分配历史
     * @param int $poolCompanyId
     * @return \think\Collection
     */
    public static function getAllotHistory(int $poolCompanyId)
    {
        return self::where('poolCompanyId', $poolCompanyId)
            ->order('createTime DESC')
            ->select();
    }
}