<?php

declare(strict_types=1);

namespace Tests\Unit\Lib\Pagination;

use InvalidArgumentException;
use PHPUnit\Framework\TestCase;
use Uwil\ArcadiaApiPhpClient\Lib\Pagination\PageNumber;
use Uwil\ArcadiaApiPhpClient\Lib\Pagination\PageSize;
use Uwil\ArcadiaApiPhpClient\Lib\Pagination\Pagination;

covers(Pagination::class);

uses(TestCase::class);

describe('Pagination Unit Tests', function (): void {
    it('creates a pagination from valid indexes', function (): void {
        // GIVEN
        $from = 0;
        $to   = 49;

        // WHEN
        $p = Pagination::ofIndexes($from, $to);

        // THEN
        expect($p->from())->toBe(0)
            ->and($p->to())->toBe(49)
            ->and($p->pageSize())->toBe(50)
            ->and($p->pageNumber())->toBe(1)
            ->and($p->pageSizeVo())->toEqual(new PageSize(50))
            ->and($p->pageNumberVo())->toEqual(new PageNumber(1))
            ->and((string) $p)->toBe('Pagination{from=0, to=49}');
    });

    it('creates pagination using ofPage with Value Objects', function (): void {
        // GIVEN
        $pageNumber = new PageNumber(2);
        $pageSize   = new PageSize(25);

        // WHEN
        $p = Pagination::ofPage($pageNumber, $pageSize);

        // THEN
        expect($p->from())->toBe(25)
            ->and($p->to())->toBe(49)
            ->and($p->pageSize())->toBe(25)
            ->and($p->pageNumber())->toBe(2)
            ->and($p->pageNumberVo())->toEqual($pageNumber)
            ->and($p->pageSizeVo())->toEqual($pageSize);

        // GIVEN
        $pageNumber2 = new PageNumber(3);
        $pageSize2   = new PageSize(10);

        // WHEN
        $p2 = Pagination::ofPage($pageNumber2, $pageSize2);

        // THEN
        expect($p2->from())->toBe(20)
            ->and($p2->to())->toBe(29)
            ->and($p2->pageSize())->toBe(10)
            ->and($p2->pageNumber())->toBe(3);
    });

    it('creates first page with default page size', function (): void {
        // WHEN
        $p = Pagination::firstPage();

        // THEN
        expect($p->from())->toBe(0)
            ->and($p->to())->toBe(49)
            ->and($p->pageSize())->toBe(50)
            ->and($p->pageNumber())->toBe(1);
    });

    it('creates first page with explicit page size', function (): void {
        // GIVEN
        $pageSize = new PageSize(20);

        // WHEN
        $p = Pagination::firstPage($pageSize);

        // THEN
        expect($p->from())->toBe(0)
            ->and($p->to())->toBe(19)
            ->and($p->pageSize())->toBe(20)
            ->and($p->pageNumber())->toBe(1);
    });

    it('creates pagination using ofOffsetAndLimit', function (): void {
        // GIVEN
        $offset = 10;
        $limit  = 15;

        // WHEN
        $p = Pagination::ofOffsetAndLimit($offset, $limit);

        // THEN
        expect($p->from())->toBe(10)
            ->and($p->to())->toBe(24)
            ->and($p->pageSize())->toBe(15);
    });

    it('checks equality with another Pagination instance', function (): void {
        // GIVEN
        $p1 = Pagination::ofPage(new PageNumber(1), new PageSize(20));
        $p2 = Pagination::ofPage(new PageNumber(1), new PageSize(20));
        $p3 = Pagination::ofPage(new PageNumber(2), new PageSize(20));

        // THEN
        expect($p1->equals($p2))->toBeTrue()
            ->and($p1->equals($p3))->toBeFalse()
            ->and($p1->equals(null))->toBeFalse()
            ->and($p1->equals('pagination'))->toBeFalse();
    });

    it('throws exception on negative from index', function (): void {
        // GIVEN / WHEN
        expect(fn () => new Pagination(-1, 10))
            // THEN
            ->toThrow(InvalidArgumentException::class, 'From index must be non-negative');
    });

    it('throws exception on negative to index', function (): void {
        // GIVEN / WHEN
        expect(fn () => new Pagination(0, -1))
            // THEN
            ->toThrow(InvalidArgumentException::class, 'To index must be non-negative');
    });

    it('throws exception when to is less than or equal to from', function (): void {
        // GIVEN / WHEN
        expect(fn () => new Pagination(10, 10))
            // THEN
            ->toThrow(InvalidArgumentException::class, 'To index must be greater than from index');
    });

    it('throws exception when page size exceeds max', function (): void {
        // GIVEN / WHEN
        expect(fn () => new Pagination(0, 10001))
            // THEN
            ->toThrow(InvalidArgumentException::class, 'Page size must be less than or equal to 10000');
    });

    it('throws exception in ofOffsetAndLimit on negative offset', function (): void {
        // GIVEN / WHEN
        expect(fn () => Pagination::ofOffsetAndLimit(-1, 10))
            // THEN
            ->toThrow(InvalidArgumentException::class, 'Offset must be non-negative');
    });

    it('throws exception in ofOffsetAndLimit on non-positive limit', function (): void {
        // GIVEN / WHEN
        expect(fn () => Pagination::ofOffsetAndLimit(0, 0))
            // THEN
            ->toThrow(InvalidArgumentException::class, 'Limit must be positive and non-zero');
    });
});