340 行
9.7 KiB
PHP
340 行
9.7 KiB
PHP
<?php
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namespace Common\Model;
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use Common\Model\BaseModel;
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/**
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* 骑手位置模型
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* Class RiderLocationModel
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* @package Common\Model
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*/
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class RiderLocationModel extends BaseModel
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{
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/**
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* 表名
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* @var string
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*/
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protected $tableName = 'rider_location';
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/**
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* 添加位置记录
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* @param array $data
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* @return int|false
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*/
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public function addLocation($data)
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{
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return $this->add($data);
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}
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/**
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* 批量添加位置记录
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* @param array $dataList
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* @return int|false
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*/
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public function addLocationBatch($dataList)
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{
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return $this->addAll($dataList);
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}
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/**
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* 获取骑手最新位置
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* @param int $riderId 骑手ID
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* @return array
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*/
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public function getLatestLocation($riderId)
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{
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return $this->where(['rider_id' => $riderId])
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->order('add_time DESC')
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->find();
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}
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/**
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* 获取骑手位置轨迹
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* @param int $riderId 骑手ID
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* @param string $startTime 开始时间
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* @param string $endTime 结束时间
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* @param int $limit 限制数量
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* @return array
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*/
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public function getLocationTrack($riderId, $startTime = '', $endTime = '', $limit = 100)
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{
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$where = ['rider_id' => $riderId];
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if (!empty($startTime)) {
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$where['add_time'][] = ['egt', $startTime];
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}
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if (!empty($endTime)) {
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$where['add_time'][] = ['elt', $endTime];
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}
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return $this->where($where)
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->order('add_time ASC')
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->limit($limit)
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->select();
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}
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/**
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* 获取指定范围内的骑手
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* @param float $centerLat 中心纬度
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* @param float $centerLng 中心经度
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* @param float $radius 半径(公里)
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* @param array $riderIds 指定骑手ID列表(可选)
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* @return array
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*/
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public function getRidersInRange($centerLat, $centerLng, $radius, $riderIds = [])
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{
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// 计算经纬度范围
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$latRange = $radius / 111; // 1度纬度约等于111公里
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$lngRange = $radius / (111 * cos(deg2rad($centerLat))); // 经度范围需要考虑纬度
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$minLat = $centerLat - $latRange;
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$maxLat = $centerLat + $latRange;
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$minLng = $centerLng - $lngRange;
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$maxLng = $centerLng + $lngRange;
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$where = [
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'lat' => ['between', [$minLat, $maxLat]],
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'lng' => ['between', [$minLng, $maxLng]]
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];
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if (!empty($riderIds)) {
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$where['rider_id'] = ['in', $riderIds];
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}
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// 获取每个骑手的最新位置
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$subQuery = $this->field('rider_id, MAX(add_time) as max_time')
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->where($where)
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->group('rider_id')
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->buildSql();
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$locations = $this->alias('rl1')
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->join("({$subQuery}) rl2 ON rl1.rider_id = rl2.rider_id AND rl1.add_time = rl2.max_time")
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->field('rl1.*')
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->select();
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// 精确计算距离并过滤
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$result = [];
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foreach ($locations as $location) {
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$distance = $this->calculateDistance($centerLat, $centerLng, $location['lat'], $location['lng']);
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if ($distance <= $radius) {
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$location['distance'] = $distance;
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$result[] = $location;
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}
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}
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// 按距离排序
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usort($result, function($a, $b) {
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return $a['distance'] <=> $b['distance'];
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});
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return $result;
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}
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/**
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* 计算两点间距离
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* @param float $lat1 纬度1
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* @param float $lng1 经度1
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* @param float $lat2 纬度2
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* @param float $lng2 经度2
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* @return float 距离(公里)
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*/
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public function calculateDistance($lat1, $lng1, $lat2, $lng2)
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{
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if (empty($lat1) || empty($lng1) || empty($lat2) || empty($lng2)) {
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return 999;
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}
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$earthRadius = 6371; // 地球半径，单位：公里
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$lat1Rad = deg2rad($lat1);
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$lng1Rad = deg2rad($lng1);
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$lat2Rad = deg2rad($lat2);
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$lng2Rad = deg2rad($lng2);
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$deltaLat = $lat2Rad - $lat1Rad;
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$deltaLng = $lng2Rad - $lng1Rad;
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$a = sin($deltaLat / 2) * sin($deltaLat / 2) +
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cos($lat1Rad) * cos($lat2Rad) *
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sin($deltaLng / 2) * sin($deltaLng / 2);
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$c = 2 * atan2(sqrt($a), sqrt(1 - $a));
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return $earthRadius * $c;
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}
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/**
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* 清理过期位置记录
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* @param int $days 保留天数
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* @return int
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*/
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public function cleanExpiredLocations($days = 7)
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{
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$expireDate = date('Y-m-d H:i:s', strtotime("-{$days} days"));
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// 删除过期的位置记录
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return $this->where(['add_time' => ['lt', $expireDate]])->delete();
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}
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/**
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* 获取骑手活动统计
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* @param int $riderId 骑手ID
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* @param string $date 日期
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* @return array
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*/
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public function getRiderActivityStats($riderId, $date = '')
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{
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if (empty($date)) {
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$date = date('Y-m-d');
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}
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$startTime = $date . ' 00:00:00';
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$endTime = $date . ' 23:59:59';
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$where = [
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'rider_id' => $riderId,
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'add_time' => ['between', [$startTime, $endTime]]
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];
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$locations = $this->where($where)
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->order('add_time ASC')
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->select();
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if (empty($locations)) {
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return [
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'total_distance' => 0,
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'active_time' => 0,
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'location_count' => 0,
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'first_location_time' => '',
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'last_location_time' => ''
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];
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}
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// 计算总距离
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$totalDistance = 0;
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for ($i = 1; $i < count($locations); $i++) {
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$distance = $this->calculateDistance(
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$locations[$i-1]['lat'],
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$locations[$i-1]['lng'],
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$locations[$i]['lat'],
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$locations[$i]['lng']
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);
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$totalDistance += $distance;
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}
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// 计算活动时间
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$firstTime = strtotime($locations[0]['add_time']);
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$lastTime = strtotime($locations[count($locations)-1]['add_time']);
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$activeTime = $lastTime - $firstTime;
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return [
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'total_distance' => round($totalDistance, 2),
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'active_time' => $activeTime,
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'location_count' => count($locations),
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'first_location_time' => $locations[0]['add_time'],
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'last_location_time' => $locations[count($locations)-1]['add_time']
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];
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}
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/**
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* 获取区域内骑手密度
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* @param float $centerLat 中心纬度
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* @param float $centerLng 中心经度
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* @param float $radius 半径(公里)
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* @param int $timeRange 时间范围(分钟)
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* @return array
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*/
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public function getRiderDensity($centerLat, $centerLng, $radius, $timeRange = 30)
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{
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$startTime = date('Y-m-d H:i:s', strtotime("-{$timeRange} minutes"));
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// 计算经纬度范围
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$latRange = $radius / 111;
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$lngRange = $radius / (111 * cos(deg2rad($centerLat)));
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$minLat = $centerLat - $latRange;
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$maxLat = $centerLat + $latRange;
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$minLng = $centerLng - $lngRange;
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$maxLng = $centerLng + $lngRange;
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$where = [
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'lat' => ['between', [$minLat, $maxLat]],
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'lng' => ['between', [$minLng, $maxLng]],
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'add_time' => ['egt', $startTime]
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];
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// 获取活跃骑手数量
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$activeRiders = $this->where($where)
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->field('rider_id')
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->group('rider_id')
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->select();
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$riderCount = count($activeRiders);
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$area = pi() * $radius * $radius; // 圆形区域面积
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$density = $area > 0 ? $riderCount / $area : 0;
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return [
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'rider_count' => $riderCount,
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'area' => round($area, 2),
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'density' => round($density, 4),
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'radius' => $radius,
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'time_range' => $timeRange
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];
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}
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/**
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* 预测骑手到达时间
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* @param int $riderId 骑手ID
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* @param float $destLat 目标纬度
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* @param float $destLng 目标经度
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* @param float $avgSpeed 平均速度(公里/小时)
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* @return array
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*/
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public function predictArrivalTime($riderId, $destLat, $destLng, $avgSpeed = 20)
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{
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// 获取骑手最新位置
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$latestLocation = $this->getLatestLocation($riderId);
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if (empty($latestLocation)) {
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return [
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'estimated_time' => 0,
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'distance' => 0,
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'error' => '无法获取骑手位置'
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];
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}
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// 计算距离
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$distance = $this->calculateDistance(
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$latestLocation['lat'],
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$latestLocation['lng'],
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$destLat,
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$destLng
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);
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// 计算预计时间(分钟)
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$estimatedTime = ($distance / $avgSpeed) * 60;
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// 考虑交通因素，增加20%的时间
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$estimatedTime *= 1.2;
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return [
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'estimated_time' => round($estimatedTime, 0),
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'distance' => round($distance, 2),
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'avg_speed' => $avgSpeed,
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'current_location' => [
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'lat' => $latestLocation['lat'],
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'lng' => $latestLocation['lng'],
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'record_time' => $latestLocation['add_time']
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]
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];
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}
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/**
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* 删除位置记录
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* @param array $where 删除条件
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* @return int
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*/
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public function deleteLocation($where)
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{
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return $this->where($where)->delete();
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}
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} |