<?php

namespace App\Http\Controllers\API\H5;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Lib\Rs;
use App\Services\PatientAuthService;
use App\Services\PlanService;
use App\Services\AppointmentService;
use App\Services\BlockService;
use Illuminate\Support\Facades\DB;

class AppointmentController extends Controller
{
    private PatientAuthService $patientAuthService;
    private AppointmentService $appointmentService;

    public function __construct(
        PatientAuthService $patientAuthService,
        AppointmentService $appointmentService
    ) {
        $this->patientAuthService = $patientAuthService;
        $this->appointmentService = $appointmentService;
    }

    /**
     * 创建预约
     * POST /api/h5/appointment/create
     */
    public function create(Request $request)
    {
        $payload = $request->attributes->get('payload');
        $idCardNo = $this->patientAuthService->getPatientIdCardNo($payload);

        $applicationIds = $request->input('application_ids');
        $planId = $request->input('plan_id');
        $channelId = (int)$request->input('channel_id', 3); // 默认微信，自助机传4

        if (empty($applicationIds) || !is_array($applicationIds)) {
            return Rs::error('请选择要预约的申请单');
        }
        if (empty($planId)) {
            return Rs::error('请选择号源');
        }

        // 校验：申请单必须属于当前患者
        $count = DB::table('exam_application')
            ->whereIn('id', $applicationIds)
            ->where('patient_id_card_no', $idCardNo)
            ->where('status', 0)
            ->count();

        if ($count != count($applicationIds)) {
            return Rs::error('部分申请单不存在或状态不符合');
        }

        $result = $this->appointmentService->createAppointment(
            0, // 患者自助，无系统用户ID
            $applicationIds,
            $channelId,
            (int)$planId
        );

        if ($result['success']) {
            return Rs::success($result['data'] ?? null, $result['message']);
        } else {
            $data = $result['data'] ?? [];
            $data['conflicts'] = $result['conflicts'] ?? [];
            return Rs::error($result['message'], 400, $data);
        }
    }

    /**
     * 取消预约
     * POST /api/h5/appointment/cancel
     */
    public function cancel(Request $request)
    {
        $payload = $request->attributes->get('payload');
        $idCardNo = $this->patientAuthService->getPatientIdCardNo($payload);

        $appointmentId = $request->input('appointment_id');
        $cancelReason = $request->input('cancel_reason', '患者主动取消');

        if (empty($appointmentId)) {
            return Rs::error('请提供预约ID');
        }

        // 校验：预约必须属于当前患者
        $appointment = DB::table('exam_appointment as ea')
            ->leftJoin('exam_application as eapp', 'ea.exam_application_id', '=', 'eapp.id')
            ->where('ea.id', $appointmentId)
            ->where('eapp.patient_id_card_no', $idCardNo)
            ->where('ea.status', 1)
            ->first();

        if (!$appointment) {
            return Rs::error('预约记录不存在或无权操作');
        }

        $result = $this->appointmentService->cancelAppointment(0, (int)$appointmentId, $cancelReason);

        if ($result['success']) {
            return Rs::success(null, $result['message']);
        }
        return Rs::error($result['message']);
    }

    /**
     * 改约
     * POST /api/h5/appointment/reschedule
     */
    public function reschedule(Request $request)
    {
        $payload = $request->attributes->get('payload');
        $idCardNo = $this->patientAuthService->getPatientIdCardNo($payload);

        $appointmentId = $request->input('appointment_id');
        $cancelReason = $request->input('cancel_reason', '患者改约');
        $newPlanId = $request->input('plan_id');

        if (empty($appointmentId)) {
            return Rs::error('请提供原预约ID');
        }
        if (empty($newPlanId)) {
            return Rs::error('请选择新号源');
        }

        // 校验：预约必须属于当前患者
        $appointment = DB::table('exam_appointment as ea')
            ->leftJoin('exam_application as eapp', 'ea.exam_application_id', '=', 'eapp.id')
            ->where('ea.id', $appointmentId)
            ->where('eapp.patient_id_card_no', $idCardNo)
            ->where('ea.status', 1)
            ->first();

        if (!$appointment) {
            return Rs::error('预约记录不存在或无权操作');
        }

        $result = $this->appointmentService->rescheduleAppointment(
            0,
            (int)$appointmentId,
            $cancelReason,
            (int)$newPlanId
        );

        if ($result['success']) {
            return Rs::success($result['data'] ?? null, $result['message']);
        } else {
            $data = $result['data'] ?? [];
            $data['conflicts'] = $result['conflicts'] ?? [];
            return Rs::error($result['message'], 400, $data);
        }
    }
}