<?php

/*
 * This file is part of the Kimai time-tracking app.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace App\Tests\Timesheet\Calculator;

use App\Entity\Activity;
use App\Entity\Customer;
use App\Entity\Project;
use App\Entity\Timesheet;
use App\Entity\User;
use App\Entity\UserPreference;
use App\Timesheet\Calculator\RateCalculator;
use PHPUnit\Framework\TestCase;

/**
 * @covers \App\Timesheet\Calculator\RateCalculator
 */
class RateCalculatorTest extends TestCase
{
    public const HOURLY_RATE = 75;

    public function testCalculateWithTimesheetHourlyRate()
    {
        $record = new Timesheet();
        $record->setEnd(new \DateTime());
        $record->setDuration(1800);
        $record->setHourlyRate(100);
        $record->setActivity(new Activity());

        $sut = new RateCalculator([]);
        $sut->calculate($record);
        $this->assertEquals(50, $record->getRate());
    }

    public function testCalculateWithTimesheetFixedRate()
    {
        $record = new Timesheet();
        $record->setEnd(new \DateTime());
        $record->setDuration(1800);
        $record->setFixedRate(10);
        // make sure that fixed rate is always applied, even if hourly rate is set
        $record->setHourlyRate(99);
        $record->setActivity(new Activity());

        $sut = new RateCalculator([]);
        $sut->calculate($record);
        $this->assertEquals(10, $record->getRate());
    }

    public function getRateTestData()
    {
        yield 'a0' => [0.0, 0, 0, null, null, null, null, null, null, null, null];
        yield 'a1' => [0.0, 1800, 0, null, null, null, null, null, null, null, null];
        yield 'a2' => [0.5, 1800, 1, null, null, null, null, null, null, null, null];
        yield 'a3' => [0.0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
        yield 'b1' => [1.5, 1800, 1, 3, null, 5, null, 7, null, 9, null];
        yield 'b2' => [2.5, 1800, 1, null, null, 5, null, 7, null, 9, null];
        yield 'b3' => [3.5, 1800, 1, null, null, null, null, 7, null, 9, null];
        yield 'b4' => [4.5, 1800, 1, null, null, null, null, null, null, 9, null];
        yield 'b5' => [2.0, 1800, 1, null, 2, null, 3, null, 4, null, 5];
        yield 'b6' => [3.0, 1800, 1, null, null, null, 3, null, 4, null, 5];
        yield 'b7' => [4.0, 1800, 1, null, null, null, null, null, 4, null, 5];
        yield 'b8' => [3.0, 1800, 1, null, null, null, 3, null, null, null, 5];
        yield 'b9' => [2.0, 1800, 1, null, 2, null, null, null, null, null, 5];
        yield 'c0' => [5.0, 1800, 100, 10, null, null, null, null, null, null, null];
        yield 'd0' => [10, 1800, 100, null, 10, null, null, null, null, null, null];
        yield 'e0' => [10, 1800, 100, null, null, 20, null, null, null, null, null];
        yield 'f0' => [20, 1800, 100, null, null, null, 20, null, null, null, null];
        yield 'g0' => [15, 1800, 100, null, null, null, null, 30, null, null, null];
        yield 'h0' => [30, 1800, 100, null, null, null, null, null, 30, null, null];
        yield 'i0' => [20, 1800, 100, null, null, null, null, null, null, 40, null];
        yield 'j0' => [40, 1800, 100, null, null, null, null, null, null, null, 40];
    }

    /**
     * @dataProvider getRateTestData
     */
    public function testRates(
        $exptectedRate,
        $duration,
        $userRate,
        $timesheetHourly,
        $timesheetFixed,
        $activityHourly,
        $activityFixed,
        $projectHourly,
        $projectFixed,
        $customerHourly,
        $customerFixed
    ) {
        $customer = new Customer();
        $customer
            ->setHourlyRate($customerHourly)
            ->setFixedRate($customerFixed)
        ;

        $project = new Project();
        $project
            ->setHourlyRate($projectHourly)
            ->setFixedRate($projectFixed)
            ->setCustomer($customer)
        ;

        $activity = new Activity();
        $activity
            ->setHourlyRate($activityHourly)
            ->setFixedRate($activityFixed)
            ->setProject($project)
        ;

        $timesheet = new Timesheet();
        $timesheet
            ->setEnd(new \DateTime())
            ->setHourlyRate($timesheetHourly)
            ->setFixedRate($timesheetFixed)
            ->setActivity($activity)
            ->setProject($project)
            ->setDuration($duration)
            ->setUser($this->getTestUser($userRate))
        ;

        $sut = new RateCalculator([]);
        $sut->calculate($timesheet);
        $this->assertEquals($exptectedRate, $timesheet->getRate());
    }

    protected function getTestUser($rate = self::HOURLY_RATE)
    {
        $pref = new UserPreference();
        $pref->setName(UserPreference::HOURLY_RATE);
        $pref->setValue($rate);

        $user = new User();
        $user->setPreferences([$pref]);

        return $user;
    }

    public function testCalculateWithEmptyEnd()
    {
        $record = new Timesheet();
        $record->setBegin(new \DateTime());
        $record->setDuration(1800);
        $record->setFixedRate(100);
        $record->setHourlyRate(100);
        $record->setActivity(new Activity());

        $this->assertEquals(0, $record->getRate());

        $sut = new RateCalculator([]);
        $sut->calculate($record);
        $this->assertEquals(0, $record->getRate());
    }

    /**
     * @dataProvider getRuleDefinitions
     */
    public function testCalculateWithRules($rules, $expectedFactor)
    {
        $seconds = 41837;

        $end = new \DateTime();
        $start = clone $end;
        $start->setTimestamp($end->getTimestamp() - $seconds);

        $record = new Timesheet();
        $record->setUser($this->getTestUser());
        $record->setBegin($start);
        $record->setDuration($seconds);
        $record->setActivity(new Activity());

        $this->assertEquals(0, $record->getRate());

        $record->setEnd($end);

        $sut = new RateCalculator($rules);
        $sut->calculate($record);

        $this->assertEquals(
            $this->rateForSeconds(self::HOURLY_RATE, $seconds) * $expectedFactor,
            $record->getRate()
        );
    }

    public function getRuleDefinitions()
    {
        $start = new \DateTime();
        $start->setTime(12, 0, 0);
        $day = $start->format('l');

        return [
            [
                [],
                1
            ],
            [
                [
                    'default' => [
                        'days' => [$day],
                        'factor' => 2.0
                    ],
                    'foo' => [
                        'days' => ['bar'],
                        'factor' => 1.5
                    ],
                ],
                2.0
            ],
            [
                [
                    'default' => [
                        'days' => [$day],
                        'factor' => 2.0
                    ],
                    'weekdays' => [
                        'days' => ['monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday'],
                        'factor' => 1.5
                    ],
                ],
                3.5
            ],
        ];
    }

    protected function rateForSeconds($hourlyRate, $seconds)
    {
        return (float) $hourlyRate * ($seconds / 3600);
    }
}