<?php

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

namespace CloudObjects\SDK;

use Exception;
use ML\IRI\IRI;
use ML\JsonLD\Node;
use ReflectionProperty;

class ObjectRetrieverFacadeTest extends \PHPUnit\Framework\TestCase {

    protected function setUp(): void {
        $prop = new ReflectionProperty(ObjectRetrieverFacade::class, 'instance');
        $prop->setAccessible(true);
        $prop->setValue(null, null);
    }

    public function testThrowsExceptionBeforeInitialization(): void {
        $this->expectException(Exception::class);
        ObjectRetrieverFacade::getObjectNode(new IRI('coid://cloudobjects.io'));
    }

    public function testForwardsGetObjectNodeToInstance(): void {
        $coid = new IRI('coid://cloudobjects.io');
        $mockNode = $this->createMock(Node::class);

        $mockRetriever = $this->createMock(ObjectRetriever::class);
        $mockRetriever->expects($this->once())
            ->method('getObjectNode')
            ->with($coid)
            ->willReturn($mockNode);

        ObjectRetrieverFacade::setObjectRetriever($mockRetriever);

        $this->assertSame($mockNode, ObjectRetrieverFacade::getObjectNode($coid));
    }

    public function testForwardsGetCloudObjectToInstance(): void {
        $coid = new IRI('coid://cloudobjects.io');
        $mockCloudObject = $this->createMock(CloudObject::class);

        $mockRetriever = $this->createMock(ObjectRetriever::class);
        $mockRetriever->expects($this->once())
            ->method('getCloudObject')
            ->with($coid)
            ->willReturn($mockCloudObject);

        ObjectRetrieverFacade::setObjectRetriever($mockRetriever);

        $this->assertSame($mockCloudObject, ObjectRetrieverFacade::getCloudObject($coid));
    }

    public function testReplacingRetrieverUsesNewInstance(): void {
        $coid = new IRI('coid://cloudobjects.io');
        $mockNode = $this->createMock(Node::class);

        $firstRetriever = $this->createMock(ObjectRetriever::class);
        $firstRetriever->expects($this->never())->method('getObjectNode');

        $secondRetriever = $this->createMock(ObjectRetriever::class);
        $secondRetriever->expects($this->once())
            ->method('getObjectNode')
            ->with($coid)
            ->willReturn($mockNode);

        ObjectRetrieverFacade::setObjectRetriever($firstRetriever);
        ObjectRetrieverFacade::setObjectRetriever($secondRetriever);

        $this->assertSame($mockNode, ObjectRetrieverFacade::getObjectNode($coid));
    }

}