Completed
Pull Request — develop (#232)
by Michiel
05:14 queued 02:43
created

InstitutionSet::jsonSerialize()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 4

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 4
rs 10
c 0
b 0
f 0
cc 1
nc 1
nop 0
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<?php
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/**
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 * Copyright 2018 SURFnet B.V.
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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namespace Surfnet\Stepup\Configuration\Value;
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use ArrayIterator;
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use IteratorAggregate;
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use JsonSerializable;
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use Surfnet\Stepup\Exception\InvalidArgumentException;
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final class InstitutionSet implements JsonSerializable, IteratorAggregate
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{
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    /**
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     * @var array
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     */
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    private $institutionSet;
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    /**
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     * @param Institution[]
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     */
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    public function __construct(array $institutions)
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    {
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        // Verify only Institution value objects are collected in the set
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        array_walk(
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            $institutions,
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            function ($institution, $key) use ($institutions) {
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                if (!$institution instanceof Institution) {
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                    throw InvalidArgumentException::invalidType(
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                        Institution::class,
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                        'institutions',
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                        $institutions[$key]
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                    );
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                }
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            }
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        );
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        // Normalize (lowercase) the institutions for the test on unique entries below.
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        $institutionsLowerCased = array_map('strtolower', $institutions);
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        if ($institutionsLowerCased !== array_unique($institutionsLowerCased)) {
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            throw new InvalidArgumentException('Duplicate entries are not allowed in the InstitutionSet');
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        }
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        $this->institutionSet = $institutions;
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    }
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    public static function fromInstitutionConfig(array $institutions)
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    {
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        if (empty($institutions)) {
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            return new self($institutions);
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        }
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        $set = [];
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        foreach ($institutions as $institutionTitle) {
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            $set[] = new Institution($institutionTitle);
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        }
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        return new self($set);
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    }
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    public function jsonSerialize()
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    {
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        return $this->institutionSet;
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    }
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    public function getIterator()
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    {
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        return new ArrayIterator($this->institutionSet);
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    }
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}
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