63 lines
1.9 KiB
PHP
63 lines
1.9 KiB
PHP
<?php
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namespace App\Services\DropOff;
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use App\Models\DropOffPoint;
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use Illuminate\Support\Collection;
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use Illuminate\Support\Facades\DB;
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class DropOffPointFinder
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{
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/**
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* Return active DOPs within $radiusKm of the given coordinates,
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* ordered by distance ascending. Each result has a `distance_meters`
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* attribute attached.
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*
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* @return Collection<int, DropOffPoint>
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*/
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public function nearby(float $latitude, float $longitude, float $radiusKm = 5.0, int $limit = 25): Collection
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{
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$radiusMeters = $radiusKm * 1000;
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$rows = DB::table('drop_off_points')
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->whereNull('deleted_at')
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->where('status', DropOffPoint::STATUS_ACTIVE)
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->select('id')
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->selectRaw(
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'ST_Distance_Sphere(coordinates, ST_SRID(POINT(?, ?), 4326)) AS distance_meters',
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[$longitude, $latitude],
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)
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->whereRaw(
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'ST_Distance_Sphere(coordinates, ST_SRID(POINT(?, ?), 4326)) <= ?',
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[$longitude, $latitude, $radiusMeters],
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)
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->orderBy('distance_meters')
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->limit($limit)
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->get();
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if ($rows->isEmpty()) {
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return collect();
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}
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$distancesById = $rows->pluck('distance_meters', 'id');
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$points = DropOffPoint::with('barangay')
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->whereIn('id', $rows->pluck('id'))
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->get()
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->keyBy('id');
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return $rows->map(function ($r) use ($points, $distancesById) {
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$p = $points->get($r->id);
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if ($p) {
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$p->distance_meters = (float) $distancesById->get($r->id);
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}
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return $p;
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})->filter()->values();
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}
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public function nearest(float $latitude, float $longitude, float $maxKm = 25.0): ?DropOffPoint
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{
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return $this->nearby($latitude, $longitude, $maxKm, 1)->first();
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}
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}
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