<?php

declare(strict_types=1);

use App\Contracts\Directories\EmployeeDirectory;
use App\Contracts\Directories\OrderDirectory;
use App\Services\StatsService;
use Carbon\CarbonImmutable;
use Domain\Enums\StatsCustomerType;

describe('StatsService', function () {
    it('calculates membership rate correctly', function () {
        // GIVEN
        $employeeDirectory = mock(EmployeeDirectory::class);
        $orderDirectory    = mock(OrderDirectory::class);

        $employeeDirectory->shouldReceive('countActiveEmployeesWithin')->andReturn(100);
        $employeeDirectory->shouldReceive('countActiveRegisteredEmployeesWithin')->andReturn(25);

        $service = new StatsService($employeeDirectory, $orderDirectory);

        $start = CarbonImmutable::now()->subDays(10);
        $end   = CarbonImmutable::now();

        // WHEN
        $rate = $service->getMembershipRate($start, $end);

        // THEN
        expect($rate)->toBe(25.0);
    });

    it('returns 0 for membership rate when no active employees', function () {
        // GIVEN
        $employeeDirectory = mock(EmployeeDirectory::class);
        $orderDirectory    = mock(OrderDirectory::class);

        $employeeDirectory->shouldReceive('countActiveEmployeesWithin')->andReturn(0);
        $employeeDirectory->shouldReceive('countActiveRegisteredEmployeesWithin')->andReturn(0);

        $service = new StatsService($employeeDirectory, $orderDirectory);

        $start = CarbonImmutable::now()->subDays(10);
        $end   = CarbonImmutable::now();

        // WHEN
        $rate = $service->getMembershipRate($start, $end);

        // THEN
        expect($rate)->toBe(0.0);
    });

    it('calculates membership percentage correctly', function () {
        // GIVEN
        $employeeDirectory = mock(EmployeeDirectory::class);
        $orderDirectory    = mock(OrderDirectory::class);

        $employeeDirectory->shouldReceive('countActiveEmployees')->andReturn(200);
        $employeeDirectory->shouldReceive('countActiveRegisteredEmployees')->andReturn(150);

        $service = new StatsService($employeeDirectory, $orderDirectory);

        // WHEN
        $percentage = $service->getMembershipPercentage();

        // THEN
        expect($percentage)->toBe(75.0);
    });

    it('returns 0 for membership percentage when no active employees', function () {
        // GIVEN
        $employeeDirectory = mock(EmployeeDirectory::class);
        $orderDirectory    = mock(OrderDirectory::class);

        $employeeDirectory->shouldReceive('countActiveEmployees')->andReturn(0);
        $employeeDirectory->shouldReceive('countActiveRegisteredEmployees')->andReturn(0);

        $service = new StatsService($employeeDirectory, $orderDirectory);

        // WHEN
        $percentage = $service->getMembershipPercentage();

        // THEN
        expect($percentage)->toBe(0.0);
    });

    it('gets the previous period', function () {
        // GIVEN
        $employeeDirectory = mock(EmployeeDirectory::class);
        $orderDirectory    = mock(OrderDirectory::class);

        $service = new StatsService($employeeDirectory, $orderDirectory);

        $start = CarbonImmutable::now()->subDays(10);
        $end   = CarbonImmutable::now();

        // WHEN
        $previousPeriod = $service->getPreviousPeriod($start, $end);

        // THEN
        expect($previousPeriod->getStartDate()->toDateString())->toBe($start->copy()->subDays(11)->toDateString());
        expect($previousPeriod->getIncludedEndDate()->toDateString())->toBe($start->copy()->subDays(1)->toDateString());
    });

    it('calculates nbSalarie stat correctly', function () {
        // GIVEN
        $employeeDirectory = mock(EmployeeDirectory::class);
        $orderDirectory    = mock(OrderDirectory::class);

        $employeeDirectory->shouldReceive('countActiveEmployeesWithin')->andReturnValues([50, 100]); // previous, current

        $service = new StatsService($employeeDirectory, $orderDirectory);

        $start = CarbonImmutable::now()->subDays(10);
        $end   = CarbonImmutable::now();

        // WHEN
        $stats = $service->getStats([StatsCustomerType::nbSalarie], $start, $end);

        // THEN
        expect($stats[StatsCustomerType::nbSalarie->value]['previous'])->toBe(50);
        expect($stats[StatsCustomerType::nbSalarie->value]['current'])->toBe(100);
        expect($stats[StatsCustomerType::nbSalarie->value]['diff'])->toBe(50);
    });
});