<?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 HistoryApiTest 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_history_endpoint_returns_electricity_and_gas_data(): void
    {
        $date = Carbon::today();

        $electricityResponse = collect([
            $this->createElectricityArray($date->copy()->setHour(0), 15.0),
            $this->createElectricityArray($date->copy()->setHour(1), 16.0),
        ]);

        $gasResponse = collect([
            $this->createGasArray($date, 5.0),
        ]);

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

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

        $response = $this->getJson('/api/history?date=' . $date->format('Y-m-d'));

        $response->assertOk()
            ->assertJsonStructure([
                'electricity' => [
                    '*' => [
                        'startDate',
                        'endDate',
                        'period',
                        'totalPriceTaxIncluded',
                    ],
                ],
                'gas' => [
                    '*' => [
                        'startDate',
                        'endDate',
                        'period',
                        'totalPriceTaxIncluded',
                    ],
                ],
            ]);
    }

    public function test_history_endpoint_returns_correct_data(): void
    {
        $date = Carbon::today();

        $electricityResponse = collect([
            $this->createElectricityArray($date->copy()->setHour(0), 15.0),
            $this->createElectricityArray($date->copy()->setHour(1), 16.0),
        ]);

        $gasResponse = collect([
            $this->createGasArray($date, 5.0),
        ]);

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

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

        $response = $this->getJson('/api/history?date=' . $date->format('Y-m-d'));

        $response->assertOk();

        $data = $response->json();
        $this->assertCount(2, $data['electricity']);
        $this->assertCount(1, $data['gas']);
        $this->assertEquals(15.0, $data['electricity'][0]['totalPriceTaxIncluded']);
        $this->assertEquals(5.0, $data['gas'][0]['totalPriceTaxIncluded']);
    }

    public function test_history_endpoint_defaults_to_today(): void
    {
        $client = Mockery::mock(PriceClient::class);
        $client->shouldReceive('getElectricityPricesForDate')
            ->once()
            ->andReturn(collect());
        $client->shouldReceive('getGasPricesForDate')
            ->once()
            ->andReturn(collect());

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

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

        $response->assertOk();
    }

    public function test_history_endpoint_handles_empty_data(): void
    {
        $date = Carbon::today();

        $client = Mockery::mock(PriceClient::class);
        $client->shouldReceive('getElectricityPricesForDate')
            ->once()
            ->andReturn(collect());
        $client->shouldReceive('getGasPricesForDate')
            ->once()
            ->andReturn(collect());

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

        $response = $this->getJson('/api/history?date=' . $date->format('Y-m-d'));

        $response->assertOk();

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

    private function createElectricityArray(Carbon $startDate, float $price): 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' => 80,
            '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'),
        ];
    }
}