<?php

namespace App\Controller;

use App\Service\BusinessTripService;
use Webman\Http\Request;
use Webman\Http\Response;

class BusinessTripController extends BaseController
{
    private BusinessTripService $service;

    public function __construct()
    {
        $this->service = new BusinessTripService();
    }

    /**
     * 获取路由参数
     */
    private function getRouteParam(Request $request, string $name, $default = null)
    {
        $route = $request->route;
        if ($route && method_exists($route, 'param')) {
            return $route->param($name) ?? $default;
        }
        return $default;
    }

    /**
     * 获取出差申请列表
     */
    public function list(Request $request): Response
    {
        $userId = $this->getUserId($request);
        $type = $request->get('type', 'my');
        $page = (int) $request->get('page', 1);
        $pageSize = (int) $request->get('page_size', 20);

        $result = $this->service->getList($userId, $type, $page, $pageSize);

        return $this->success($result);
    }

    /**
     * 获取出差申请详情
     */
    public function detail(Request $request): Response
    {
        $id = (int) $this->getRouteParam($request, 'id');
        if (!$id) {
            return $this->error('参数错误');
        }

        $detail = $this->service->getDetail($id);

        return $this->success($detail);
    }

    /**
     * 创建出差申请（草稿）
     */
    public function create(Request $request): Response
    {
        $userId = $this->getUserId($request);
        $data = $request->post();
        $data = $data ?? [];

        // 验证必填字段
        if (empty($data['reason'])) {
            return $this->error('请输入出差原因');
        }

        if (empty($data['itineraries']) || !is_array($data['itineraries'])) {
            return $this->error('请至少添加一条行程');
        }

        // 验证行程数据
        foreach ($data['itineraries'] as $index => $itinerary) {
            if (empty($itinerary['start_time'])) {
                return $this->error("行程" . ($index + 1) . "：请选择开始时间");
            }
            if (empty($itinerary['destination'])) {
                return $this->error("行程" . ($index + 1) . "：请输入目的地");
            }
        }

        try {
            $businessTrip = $this->service->createDraft($userId, $data);
            return $this->success($businessTrip, '创建成功');
        } catch (\Exception $e) {
            return $this->error($e->getMessage());
        }
    }

    /**
     * 更新出差申请
     */
    public function update(Request $request): Response
    {
        $userId = $this->getUserId($request);
        $id = (int) $this->getRouteParam($request, 'id');
        if (!$id) {
            return $this->error('参数错误');
        }

        $data = $request->post();
        $data = $data ?? [];

        try {
            $businessTrip = $this->service->update($userId, $id, $data);
            return $this->success($businessTrip, '更新成功');
        } catch (\Exception $e) {
            return $this->error($e->getMessage());
        }
    }

    /**
     * 提交出差申请
     */
    public function submit(Request $request): Response
    {
        $userId = $this->getUserId($request);
        $id = (int) $this->getRouteParam($request, 'id');
        if (!$id) {
            return $this->error('参数错误');
        }

        $data = $request->post();
        $data = $data ?? [];

        $approvers = $data['approvers'] ?? [];
        $ccUsers = $data['cc_users'] ?? [];

        if (empty($approvers)) {
            return $this->error('请选择审批人');
        }

        try {
            $businessTrip = $this->service->submit($userId, $id, $approvers, $ccUsers);
            return $this->success($businessTrip, '提交成功');
        } catch (\Exception $e) {
            return $this->error($e->getMessage());
        }
    }

    /**
     * 取消出差申请
     */
    public function cancel(Request $request): Response
    {
        $userId = $this->getUserId($request);
        $id = (int) $this->getRouteParam($request, 'id');
        if (!$id) {
            return $this->error('参数错误');
        }

        try {
            $businessTrip = $this->service->cancel($userId, $id);
            return $this->success($businessTrip, '取消成功');
        } catch (\Exception $e) {
            return $this->error($e->getMessage());
        }
    }
}