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<?php
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namespace App\Actions;
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use App\Models\Orders;
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use Illuminate\Support\Facades\DB;
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class AttachAffectedOrders
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{
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/*
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* 获取关联影响的订单
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* 前置条件是订单状态为进行中
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* 忽略服务开始日期因素，基于后续的主订单修改只针对今天或明天生效，原因如下：
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* 1、如果服务日期开始于今天之前，那今明两天势必已经包含在被影响到的范围
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* 2、如果服务日期开始于明天，那前端可锁定、或现场管理人员可以自定判断，在后续的订单修改时，提交生效起始时间为明天
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* 3、如果服务日期开始于后天及以后，为极小概率事件，现场管理人员可在此刻忽略后续的订单处理，待服务日期开始后自行调整
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* todo:目前的策略为统一的，只区分一对一和一对多；如要按照更精确的按照1对N进行计算，需要更改此action
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*/
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public function __invoke(Orders $order, $from_paramedic = null)
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{
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$affected_orders = [];
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//前置条件
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if ($order->status != Orders::STATUS_ONGOING) {
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$order->affected_orders = $affected_orders;
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return $order;
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}
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//护工没换
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if ($order->paramedic_id == $from_paramedic) {
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$order->affected_orders = $affected_orders;
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return $order;
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}
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//更换护工，查询从原护工手上退出订单后，原护工的其他订单是否变成了1对1
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if ($from_paramedic) {
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$last_orders = $this->getOrderModel()->where("paramedic_id", $from_paramedic)
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->where("status", Orders::STATUS_ONGOING)
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->where("paramedic_id", "<>", $order->paramedic_id) //剔除未更换护工的情况
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->get();
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//仅取唯一的一条。如果总数大于1，说明护工撤出后仍然是一对多，按照既定规则，不产生价格变化
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if ($last_orders->count() === 1) {
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$many_to_one = $last_orders->first();
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$many_to_one->change = "many_to_one";
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$affected_orders[] = $many_to_one;
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}
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}
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//查询护工新接手一张单之后，是否有订单从1对1变成了1对多
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$new_same_paramedic_orders = $this->getOrderModel()->where("paramedic_id", $order->paramedic_id)
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->where("status", Orders::STATUS_ONGOING)
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->where("id", "<>", $order->id) //剔除订单本身
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->get();
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//仅取唯一的一条。如果总数大于1，说明护工在未增加订单之前已经是1对多，按照既定规则，不产生价格变化
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if ($new_same_paramedic_orders->count() === 1) {
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$one_to_many = $new_same_paramedic_orders->first();
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$one_to_many->change = "one_to_many";
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$affected_orders[] = $one_to_many;
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}
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foreach ($affected_orders as $affected_order) {
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$affected_order->from_order_id = $order->id;
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$affected_order->from_paramedic_id = $from_paramedic;
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}
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$order->affected_orders = collect($affected_orders);
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return $order;
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}
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public function getOrderModel()
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{
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$model = Orders::with([
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"project" => function ($query) {
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$query->select("id", "name");
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},
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"bed" => function ($query) {
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$query->select("bed.id", "bed.name")
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->leftJoin("building", "building.id", "=", "bed.building_id")
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->leftJoin("area", "area.id", "=", "bed.area_id")
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->leftJoin("room", "room.id", "=", "bed.room_id")
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->addSelect("room.name as room_name", "area.name as area_name", "building.name as building_name");
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},
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"patient" => function ($query) {
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$query->select("id", "name", "sex", "age", "mobile");
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},
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"paramedic" => function ($query) {
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$query->select("paramedic.id", "paramedic.name", "paramedic.mobile")
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->leftJoin("paramedic_level", "paramedic_level.id", "=", "paramedic.paramedic_level_id")
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->addSelect("paramedic_level.name as paramedic_level_name");
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}
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]);
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return $model;
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}
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}
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