fuel-price/tests/Feature/Api/StationControllerTest.php

<?php

use App\Enums\FuelType;
use App\Models\Station;
use App\Models\StationPriceCurrent;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Http;

uses(RefreshDatabase::class);

beforeEach(function () {
    $this->withHeaders(['X-Api-Key' => config('app.api_secret_key')]);
});

it('returns stations near coordinates filtered by fuel type', function () {
    $station = Station::factory()->create(['lat' => 52.555064, 'lng' => -0.256119]);
    StationPriceCurrent::factory()->create([
        'station_id' => $station->node_id,
        'fuel_type' => FuelType::B7Standard,
        'price_pence' => 14500,
    ]);

    $this->getJson('/api/stations?lat=52.555064&lng=-0.256119&fuel_type=diesel&radius=10&sort=price')
        ->assertOk()
        ->assertJsonStructure([
            'data' => [['station_id', 'name', 'brand', 'is_supermarket', 'lat', 'lng', 'distance_km', 'fuel_type', 'price_pence', 'price', 'price_updated_at']],
            'meta' => ['count', 'fuel_type', 'radius_km', 'lowest_pence'],
        ])
        ->assertJsonPath('data.0.price_pence', 14500)
        ->assertJsonPath('meta.fuel_type', 'b7_standard');
});

it('excludes stations with no matching fuel type', function () {
    $station = Station::factory()->create(['lat' => 52.555064, 'lng' => -0.256119]);
    StationPriceCurrent::factory()->create([
        'station_id' => $station->node_id,
        'fuel_type' => FuelType::E10, // not diesel
        'price_pence' => 13800,
    ]);

    $this->getJson('/api/stations?lat=52.555064&lng=-0.256119&fuel_type=diesel&radius=10')
        ->assertOk()
        ->assertJsonPath('meta.count', 0);
});

it('excludes temporarily closed stations', function () {
    $closed = Station::factory()->create([
        'lat' => 52.555064, 'lng' => -0.256119,
        'temporary_closure' => true,
    ]);
    StationPriceCurrent::factory()->create([
        'station_id' => $closed->node_id,
        'fuel_type' => FuelType::B7Standard,
        'price_pence' => 14200,
    ]);

    $this->getJson('/api/stations?lat=52.555064&lng=-0.256119&fuel_type=diesel&radius=10')
        ->assertOk()
        ->assertJsonPath('meta.count', 0);
});

it('excludes stations beyond radius', function () {
    // Station ~100km north
    $farStation = Station::factory()->create(['lat' => 53.5, 'lng' => -0.256119]);
    StationPriceCurrent::factory()->create([
        'station_id' => $farStation->node_id,
        'fuel_type' => FuelType::B7Standard,
        'price_pence' => 14200,
    ]);

    $this->getJson('/api/stations?lat=52.555064&lng=-0.256119&fuel_type=diesel&radius=10')
        ->assertOk()
        ->assertJsonPath('meta.count', 0);
});

it('sorts by price when sort=price', function () {
    $sLat = 52.555;
    $sLng = -0.256;
    $cheap = Station::factory()->create(['lat' => $sLat, 'lng' => $sLng]);
    $expensive = Station::factory()->create(['lat' => $sLat + 0.001, 'lng' => $sLng]);

    StationPriceCurrent::factory()->create(['station_id' => $cheap->node_id, 'fuel_type' => FuelType::B7Standard, 'price_pence' => 13900]);
    StationPriceCurrent::factory()->create(['station_id' => $expensive->node_id, 'fuel_type' => FuelType::B7Standard, 'price_pence' => 14500]);

    $this->getJson("/api/stations?lat={$sLat}&lng={$sLng}&fuel_type=diesel&radius=10&sort=price")
        ->assertOk()
        ->assertJsonPath('data.0.price_pence', 13900);
});

it('logs a search record for each request', function () {
    $station = Station::factory()->create(['lat' => 52.555064, 'lng' => -0.256119]);
    StationPriceCurrent::factory()->create(['station_id' => $station->node_id, 'fuel_type' => FuelType::B7Standard, 'price_pence' => 14500]);

    $this->getJson('/api/stations?lat=52.555064&lng=-0.256119&fuel_type=diesel&radius=10');

    $this->assertDatabaseHas('searches', [
        'lat_bucket' => '52.56',
        'lng_bucket' => '-0.26',
        'fuel_type' => 'b7_standard',
        'results_count' => 1,
        'lowest_pence' => 14500,
        'highest_pence' => 14500,
    ]);
});

it('returns 422 when required params are missing', function () {
    $this->getJson('/api/stations?lat=52.5')
        ->assertUnprocessable();
});

it('resolves a full postcode to coordinates and returns nearby stations', function () {
    $station = Station::factory()->create(['lat' => 51.5010, 'lng' => -0.1415]);
    StationPriceCurrent::factory()->create([
        'station_id' => $station->node_id,
        'fuel_type' => FuelType::E10,
        'price_pence' => 14200,
    ]);

    Http::fake([
        'api.postcodes.io/postcodes/SW1A1AA' => Http::response([
            'status' => 200,
            'result' => ['postcode' => 'SW1A 1AA', 'latitude' => 51.5010, 'longitude' => -0.1415],
        ]),
    ]);

    $this->getJson('/api/stations?postcode=SW1A+1AA&fuel_type=e10&radius=1')
        ->assertOk()
        ->assertJsonPath('meta.count', 1);
});

it('resolves an outcode to coordinates', function () {
    $station = Station::factory()->create(['lat' => 51.5010, 'lng' => -0.1415]);
    StationPriceCurrent::factory()->create([
        'station_id' => $station->node_id,
        'fuel_type' => FuelType::E10,
        'price_pence' => 14200,
    ]);

    Http::fake([
        'api.postcodes.io/outcodes/SW1A' => Http::response([
            'status' => 200,
            'result' => ['outcode' => 'SW1A', 'latitude' => 51.5010, 'longitude' => -0.1415],
        ]),
    ]);

    $this->getJson('/api/stations?postcode=SW1A&fuel_type=e10&radius=1')
        ->assertOk()
        ->assertJsonPath('meta.count', 1);
});

it('returns 422 when postcode cannot be resolved', function () {
    Http::fake([
        'api.postcodes.io/*' => Http::response(['status' => 404, 'error' => 'Postcode not found'], 404),
    ]);

    $this->getJson('/api/stations?postcode=ZZ99+9ZZ&fuel_type=e10')
        ->assertUnprocessable()
        ->assertJsonValidationErrors(['postcode']);
});

it('includes resolved lat and lng in meta', function () {
    $station = Station::factory()->create(['lat' => 52.555064, 'lng' => -0.256119]);
    StationPriceCurrent::factory()->create([
        'station_id' => $station->node_id,
        'fuel_type' => FuelType::B7Standard,
        'price_pence' => 14500,
    ]);

    $this->getJson('/api/stations?lat=52.555064&lng=-0.256119&fuel_type=diesel&radius=10')
        ->assertOk()
        ->assertJsonPath('meta.lat', 52.555064)
        ->assertJsonPath('meta.lng', -0.256119);
});

it('includes resolved lat and lng in meta when postcode is provided', function () {
    $station = Station::factory()->create(['lat' => 51.5010, 'lng' => -0.1415]);
    StationPriceCurrent::factory()->create([
        'station_id' => $station->node_id,
        'fuel_type' => FuelType::E10,
        'price_pence' => 14200,
    ]);

    Http::fake([
        'api.postcodes.io/postcodes/SW1A1AA' => Http::response([
            'status' => 200,
            'result' => ['postcode' => 'SW1A 1AA', 'latitude' => 51.5010, 'longitude' => -0.1415],
        ]),
    ]);

    $this->getJson('/api/stations?postcode=SW1A+1AA&fuel_type=e10&radius=1')
        ->assertOk()
        ->assertJsonPath('meta.lat', 51.5010)
        ->assertJsonPath('meta.lng', -0.1415);
});