<?php

namespace common\models\forms;

use common\components\Model;
use common\models\Order;
use common\models\Period;
use Yii;

/**
 * Batch order period adjust form.
 */
class OrderPeriodAdjustRangeForm extends Model
{
    public $start_time;
    public $end_time;
    public $period_num;
    public $operate_user;

    public $start_timestamp;
    public $end_timestamp;
    public $orders = [];

    public function rules()
    {
        return [
            [['start_time', 'end_time', 'period_num', 'operate_user'], 'trim'],
            [['start_time', 'end_time', 'period_num', 'operate_user'], 'required'],
        ];
    }

    public function attributeLabels()
    {
        return [
            'start_time' => 'start_time',
            'end_time' => 'end_time',
            'period_num' => 'period_num',
            'operate_user' => 'operate_user',
        ];
    }

    public function scenarios()
    {
        $parentScenarios = parent::scenarios();
        $customScenarios = [
            'orderPeriodAdjustRange' => ['start_time', 'end_time', 'period_num', 'operate_user'],
        ];
        return array_merge($parentScenarios, $customScenarios);
    }

    public function beforeValidate()
    {
        $parentValidate = parent::beforeValidate();

        $this->start_timestamp = strtotime($this->start_time);
        $this->end_timestamp = strtotime($this->end_time);
        if ($this->start_timestamp === false) {
            $this->addError('start_time', 'start_time format is invalid');
            return false;
        }
        if ($this->end_timestamp === false) {
            $this->addError('end_time', 'end_time format is invalid');
            return false;
        }
        if ($this->start_timestamp > $this->end_timestamp) {
            $this->addError('end_time', 'end_time must be greater than or equal to start_time');
            return false;
        }

        $period = Period::getInfoByPeriodNum($this->period_num);
        if (!$period) {
            $this->addError('period_num', Yii::t('ctx', 'invalidPcNo'));
            return false;
        }
        if ((int)$period['IS_SENT'] === 1) {
            $this->addError('period_num', Yii::t('ctx', 'orderHasBeenConnected'));
            return false;
        }

        return $parentValidate;
    }

    /**
     * Adjust orders by created_at range.
     * @return array|null
     */
    public function periodAdjustRange()
    {
        if (!$this->validate()) {
            return null;
        }

        $this->orders = Order::find()
            ->select(['SN', 'PERIOD_NUM'])
            ->where(['IS_DELETE' => 0])
            ->andWhere(['>=', 'CREATED_AT', $this->start_timestamp])
            ->andWhere(['<=', 'CREATED_AT', $this->end_timestamp])
            ->orderBy(['CREATED_AT' => SORT_ASC, 'ID' => SORT_ASC])
            ->asArray()
            ->all();

        $successOrderSnList = [];
        $failedOrderSnList = [];
        $skippedOrderSnList = [];
        $skippedDetailMap = [];
        $failedDetailMap = [];

        foreach ($this->orders as $orderRow) {
            $orderSn = $orderRow['SN'];
            $skipReason = $this->getSkipReason($orderRow);
            if ($skipReason !== null) {
                $skippedOrderSnList[] = $orderSn;
                $skippedDetailMap[$orderSn] = [
                    'reason' => $skipReason,
                    'current_period' => $orderRow['PERIOD_NUM'] ?? '',
                    'target_period' => $this->period_num,
                ];
                continue;
            }

            $adjustForm = new OrderPeriodAdjustForm();
            $adjustForm->scenario = 'orderPeriodAdjust';
            $adjustForm->orderSn = $orderSn;
            $adjustForm->modernPeriod = $this->period_num;
            $adjustForm->operateUser = $this->operate_user;

            $result = $adjustForm->periodAdjust();
            if ($result === true) {
                $successOrderSnList[] = $orderSn;
            } else {
                $failedOrderSnList[] = $orderSn;
                $failedDetailMap[$orderSn] = $adjustForm->getErrors();
            }
        }

        return [
            'start_time' => $this->start_time,
            'end_time' => $this->end_time,
            'period_num' => $this->period_num,
            'operate_user' => $this->operate_user,
            'total_count' => count($this->orders),
            'success_count' => count($successOrderSnList),
            'failed_count' => count($failedOrderSnList),
            'skipped_count' => count($skippedOrderSnList),
            'success_order_sn_list' => $successOrderSnList,
            'failed_order_sn_list' => $failedOrderSnList,
            'skipped_order_sn_list' => $skippedOrderSnList,
            'skipped_detail_map' => $skippedDetailMap,
            'failed_detail_map' => $failedDetailMap,
        ];
    }

    private function getSkipReason(array $orderRow): ?string
    {
        $currentPeriodNum = (string)($orderRow['PERIOD_NUM'] ?? '');
        $targetPeriodNum = (string)$this->period_num;

        if ($currentPeriodNum !== '' && $currentPeriodNum === $targetPeriodNum) {
            return '订单期数与目标期数相同';
        }

        if ($currentPeriodNum === '') {
            return '订单期数为空，无法判断是否可调整';
        }

        $currentPeriod = Period::getInfoByPeriodNum($currentPeriodNum);
        if (!$currentPeriod) {
            return Yii::t('ctx', 'invalidPcNo');
        }

        if ((int)$currentPeriod['IS_SENT'] === 1) {
            return '已挂网,不可调整';
        }

        if ($currentPeriodNum === $targetPeriodNum) {
            return '订单期数与目标期数相同';
        }

        $availablePeriodList = Period::getPeriodList(+(int)$currentPeriodNum - 1);
        $availablePeriodNums = array_column($availablePeriodList, 'PERIOD_NUM');
        if (!in_array($targetPeriodNum, $availablePeriodNums, false)) {
            return '不在可调整期数范围内';
        }

        return null;
    }
}