<?php

/*
 * This file is part of the Predis package.
 *
 * (c) 2009-2020 Daniele Alessandri
 * (c) 2021-2023 Till Krüss
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Predis\Collection\Iterator;

use PredisTestCase;

/**
 * @group realm-iterators
 */
class KeyspaceTest extends PredisTestCase
{
    /**
     * @group disconnected
     */
    public function testThrowsExceptionOnMissingCommand(): void
    {
        $this->expectException('Predis\NotSupportedException');
        $this->expectExceptionMessage("'SCAN' is not supported by the current command factory.");

        $commands = $this->getMockBuilder('Predis\Command\FactoryInterface')->getMock();
        $commands
            ->expects($this->any())
            ->method('supports')
            ->willReturn(false);

        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\ClientInterface')->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($commands);

        new Keyspace($client);
    }

    /**
     * @group disconnected
     */
    public function testIterationWithNoResults(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());
        $client
            ->expects($this->once())
            ->method('scan')
            ->with(0, [])
            ->willReturn(
                [0, []]
            );

        $iterator = new Keyspace($client);

        $iterator->rewind();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationOnSingleFetch(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());
        $client
            ->expects($this->once())
            ->method('scan')
            ->with(0, [])
            ->willReturn(
                [0, ['key:1st', 'key:2nd', 'key:3rd']]
            );

        $iterator = new Keyspace($client);

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:2nd', $iterator->current());
        $this->assertSame(1, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:3rd', $iterator->current());
        $this->assertSame(2, $iterator->key());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationOnMultipleFetches(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());
        $client
            ->expects($this->exactly(2))
            ->method('scan')
            ->withConsecutive(
                [0, []],
                [2, []]
            )
            ->willReturnOnConsecutiveCalls(
                [2, ['key:1st', 'key:2nd']],
                [0, ['key:3rd']]
            );

        $iterator = new Keyspace($client);

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:2nd', $iterator->current());
        $this->assertSame(1, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:3rd', $iterator->current());
        $this->assertSame(2, $iterator->key());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationOnMultipleFetchesAndHoleInFirstFetch(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());
        $client
            ->expects($this->exactly(2))
            ->method('scan')
            ->withConsecutive(
                [0, []],
                [4, []]
            )
            ->willReturnOnConsecutiveCalls(
                [4, []],
                [0, ['key:1st', 'key:2nd']]
            );

        $iterator = new Keyspace($client);

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:2nd', $iterator->current());
        $this->assertSame(1, $iterator->key());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationOnMultipleFetchesAndHoleInMidFetch(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());
        $client
            ->expects($this->exactly(3))
            ->method('scan')
            ->withConsecutive(
                [0, []],
                [2, []],
                [5, []]
            )
            ->willReturnOnConsecutiveCalls(
                [2, ['key:1st', 'key:2nd']],
                [5, []],
                [0, ['key:3rd']]
            );

        $iterator = new Keyspace($client);

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:2nd', $iterator->current());
        $this->assertSame(1, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:3rd', $iterator->current());
        $this->assertSame(2, $iterator->key());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationWithOptionMatch(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());
        $client
            ->expects($this->once())
            ->method('scan')
            ->withConsecutive(
                [0, ['MATCH' => 'key:*']]
            )
            ->willReturnOnConsecutiveCalls(
                [0, ['key:1st', 'key:2nd']]
            );

        $iterator = new Keyspace($client, 'key:*');

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:2nd', $iterator->current());
        $this->assertSame(1, $iterator->key());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationWithOptionMatchOnMultipleFetches(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());
        $client
            ->expects($this->exactly(2))
            ->method('scan')
            ->withConsecutive(
                [0, ['MATCH' => 'key:*']],
                [1, ['MATCH' => 'key:*']]
            )
            ->willReturnOnConsecutiveCalls(
                [1, ['key:1st']],
                [0, ['key:2nd']]
            );

        $iterator = new Keyspace($client, 'key:*');

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:2nd', $iterator->current());
        $this->assertSame(1, $iterator->key());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationWithOptionCount(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());
        $client
            ->expects($this->once())
            ->method('scan')
            ->withConsecutive(
                [0, ['COUNT' => 2]]
            )
            ->willReturnOnConsecutiveCalls(
                [0, ['key:1st', 'key:2nd']]
            );

        $iterator = new Keyspace($client, null, 2);

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:2nd', $iterator->current());
        $this->assertSame(1, $iterator->key());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationWithOptionCountOnMultipleFetches(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());

        $client
            ->expects($this->exactly(2))
            ->method('scan')
            ->withConsecutive(
                [0, ['COUNT' => 1]],
                [1, ['COUNT' => 1]]
            )
            ->willReturnOnConsecutiveCalls(
                [1, ['key:1st']],
                [0, ['key:2nd']]
            );

        $iterator = new Keyspace($client, null, 1);

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:2nd', $iterator->current());
        $this->assertSame(1, $iterator->key());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationWithOptionsMatchAndCount(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());
        $client
            ->expects($this->once())
            ->method('scan')
            ->withConsecutive(
                [0, ['MATCH' => 'key:*', 'COUNT' => 2]]
            )
            ->willReturnOnConsecutiveCalls(
                [0, ['key:1st', 'key:2nd']]
            );

        $iterator = new Keyspace($client, 'key:*', 2);

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:2nd', $iterator->current());
        $this->assertSame(1, $iterator->key());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationWithOptionsMatchAndCountOnMultipleFetches(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());

        $client
            ->expects($this->exactly(2))
            ->method('scan')
            ->withConsecutive(
                [0, ['MATCH' => 'key:*', 'COUNT' => 1]],
                [1, ['MATCH' => 'key:*', 'COUNT' => 1]]
            )
            ->willReturnOnConsecutiveCalls(
                [1, ['key:1st']],
                [0, ['key:2nd']]
            );

        $iterator = new Keyspace($client, 'key:*', 1);

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:2nd', $iterator->current());
        $this->assertSame(1, $iterator->key());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }

    /**
     * @group disconnected
     */
    public function testIterationRewindable(): void
    {
        /** @var \Predis\ClientInterface */
        $client = $this->getMockBuilder('Predis\Client')
            ->onlyMethods(['getCommandFactory'])
            ->addMethods(['scan'])
            ->getMock();
        $client
            ->expects($this->any())
            ->method('getCommandFactory')
            ->willReturn($this->getCommandFactory());
        $client
            ->expects($this->exactly(2))
            ->method('scan')
            ->with(0, [])
            ->willReturn(
                [0, ['key:1st', 'key:2nd']]
            );

        $iterator = new Keyspace($client);

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->rewind();
        $this->assertTrue($iterator->valid());
        $this->assertSame('key:1st', $iterator->current());
        $this->assertSame(0, $iterator->key());

        $iterator->next();
        $this->assertTrue($iterator->valid());
        $this->assertSame(1, $iterator->key());
        $this->assertSame('key:2nd', $iterator->current());

        $iterator->next();
        $this->assertFalse($iterator->valid());
    }
}
