<?php

namespace Tests\Feature\Api;

use App\Contracts\PriceClient;
use App\Data\ElectricityData;
use App\Data\GasData;
use Carbon\Carbon;
use Illuminate\Support\Collection;
use Mockery;
use Tests\TestCase;

class DashboardApiTest extends TestCase
{
    protected function setUp(): void
    {
        parent::setUp();
        config(['cache_prices.ttl' => 60]);
        config(['cache_prices.prefix' => 'test:']);
    }

    protected function tearDown(): void
    {
        Mockery::close();
        \Illuminate\Support\Facades\Cache::flush();
        parent::tearDown();
    }

    public function test_dashboard_endpoint_returns_electricity_and_gas_data(): void
    {
        $now = Carbon::now();

        $electricityResponse = collect([
            $this->createElectricityArray($now->copy()->subMinutes(30), 15.0, 80),
            $this->createElectricityArray($now->copy()->addHour(), 12.0, 90),
            $this->createElectricityArray($now->copy()->addHours(2), 20.0, 60),
            $this->createElectricityArray($now->copy()->addHours(3), 10.0, 95),
        ]);

        $gasResponse = collect([
            $this->createGasArray($now->copy()->startOfDay(), 5.0),
            $this->createGasArray($now->copy()->addDay(), 4.0),
            $this->createGasArray($now->copy()->addDays(2), 6.0),
        ]);

        $client = Mockery::mock(PriceClient::class);
        $client->shouldReceive('getElectricityPrices')->once()->andReturn($electricityResponse);
        $client->shouldReceive('getGasPrices')->once()->andReturn($gasResponse);

        $this->app->bind(PriceClient::class, fn () => $client);

        $response = $this->getJson('/api/energy-prices');

        $response->assertOk()
            ->assertJsonStructure([
                'electricity' => [
                    'startDate',
                    'endDate',
                    'period',
                    'totalPriceTaxIncluded',
                ],
                'electricityCheapest',
                'electricityDurable',
                'electricityPriciest',
                'gas' => [
                    'startDate',
                    'endDate',
                    'period',
                    'totalPriceTaxIncluded',
                ],
                'gasCheapest',
                'gasPriciest',
            ]);
    }

    public function test_dashboard_endpoint_returns_correct_prices(): void
    {
        $now = Carbon::now();

        $electricityResponse = collect([
            $this->createElectricityArray($now->copy()->subMinutes(30), 15.0, 80),
            $this->createElectricityArray($now->copy()->addHour(), 12.0, 90),
            $this->createElectricityArray($now->copy()->addHours(2), 20.0, 60),
        ]);

        $gasResponse = collect([
            $this->createGasArray($now->copy()->startOfDay(), 5.0),
            $this->createGasArray($now->copy()->addDay(), 4.0),
        ]);

        $client = Mockery::mock(PriceClient::class);
        $client->shouldReceive('getElectricityPrices')->once()->andReturn($electricityResponse);
        $client->shouldReceive('getGasPrices')->once()->andReturn($gasResponse);

        $this->app->bind(PriceClient::class, fn () => $client);

        $response = $this->getJson('/api/energy-prices');

        $response->assertOk();

        $data = $response->json();
        $this->assertEquals(15.0, $data['electricity']['totalPriceTaxIncluded']);
        $this->assertEquals(12.0, $data['electricityCheapest']['totalPriceTaxIncluded']);
        $this->assertEquals(20.0, $data['electricityPriciest']['totalPriceTaxIncluded']);
        $this->assertEquals(5.0, $data['gas']['totalPriceTaxIncluded']);
        $this->assertEquals(4.0, $data['gasCheapest']['totalPriceTaxIncluded']);
    }

    public function test_dashboard_endpoint_handles_empty_data(): void
    {
        $client = Mockery::mock(PriceClient::class);
        $client->shouldReceive('getElectricityPrices')->once()->andReturn(collect());
        $client->shouldReceive('getGasPrices')->once()->andReturn(collect());

        $this->app->bind(PriceClient::class, fn () => $client);

        $response = $this->getJson('/api/energy-prices');

        $response->assertOk();

        $data = $response->json();
        $this->assertNull($data['electricity'] ?? null);
        $this->assertNull($data['gas'] ?? null);
    }

    private function createElectricityArray(Carbon $startDate, float $price, int $sustainabilityScore): array
    {
        return [
            'start_date' => $startDate->format('Y-m-d H:i:s'),
            'end_date' => $startDate->copy()->addHour()->format('Y-m-d H:i:s'),
            'period' => 'elec_hour',
            'market_price' => (int) ($price * 100),
            'total_price_tax_included' => $price,
            'price_incl_handling_vat' => (int) ($price * 100),
            'price_tax_with_vat' => (int) ($price * 20),
            'pricing_profile' => 'dynamic',
            'carbon_footprint_in_gram' => 500,
            'sustainability_score' => $sustainabilityScore,
            'start_date_datetime' => $startDate->format('Y-m-d H:i:s'),
        ];
    }

    private function createGasArray(Carbon $startDate, float $price): array
    {
        return [
            'start_date' => $startDate->format('Y-m-d H:i:s'),
            'end_date' => $startDate->copy()->addDay()->format('Y-m-d H:i:s'),
            'period' => 'gas_day',
            'market_price' => (int) ($price * 100),
            'total_price_tax_included' => $price,
            'price_incl_handling_vat' => (int) ($price * 100),
            'price_tax_with_vat' => (int) ($price * 20),
            'start_date_datetime' => $startDate->format('Y-m-d H:i:s'),
        ];
    }
}