Limoncello\Application\Packages\Data\DataSettings

Complexity

Total Complexity

18

Size/Duplication

Total Lines	178
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

Test Coverage

Coverage

100%

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	getSettings()	0	7	1
B	get()	0	42	5
C	getModelsSchemaInfo()	0	82	12

<?php namespace Limoncello\Application\Packages\Data;

/**
 * Copyright 2015-2017 info@neomerx.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

use Limoncello\Application\Data\ModelSchemaInfo;
use Limoncello\Contracts\Application\ModelInterface;
use Limoncello\Contracts\Data\RelationshipTypes;
use Limoncello\Contracts\Settings\SettingsInterface;
use Limoncello\Core\Reflection\CheckCallableTrait;
use Limoncello\Core\Reflection\ClassIsTrait;
use Psr\Container\ContainerInterface;

/**
 * @package Limoncello\Application
 */
abstract class DataSettings implements SettingsInterface
{
    use ClassIsTrait, CheckCallableTrait;

    /** Settings key */
    const KEY_MODELS_FOLDER = 0;

    /** Settings key */
    const KEY_MODELS_FILE_MASK = self::KEY_MODELS_FOLDER + 1;

    /** Settings key */
    const KEY_MIGRATIONS_FOLDER = self::KEY_MODELS_FILE_MASK + 1;

    /** Settings key */
    const KEY_MIGRATIONS_LIST_FILE = self::KEY_MIGRATIONS_FOLDER + 1;

    /** Settings key */
    const KEY_SEEDS_FOLDER = self::KEY_MIGRATIONS_LIST_FILE + 1;

    /** Settings key */
    const KEY_SEEDS_LIST_FILE = self::KEY_SEEDS_FOLDER + 1;

    /** Settings key */
    const KEY_SEED_INIT = self::KEY_SEEDS_LIST_FILE + 1;

    /** Settings key */
    const KEY_MODELS_SCHEMA_INFO = self::KEY_SEED_INIT + 1;

    /** Settings key */
    protected const KEY_LAST = self::KEY_MODELS_SCHEMA_INFO;

    /**
     * @inheritdoc
     */
    final public function get(array $appConfig): array
    {
        $defaults = $this->getSettings();

        $modelsFolder       = $defaults[static::KEY_MODELS_FOLDER] ?? null;
        $modelsFileMask     = $defaults[static::KEY_MODELS_FILE_MASK] ?? null;
        $migrationsFolder   = $defaults[static::KEY_MIGRATIONS_FOLDER] ?? null;
        $migrationsListFile = $defaults[static::KEY_MIGRATIONS_LIST_FILE] ?? null;
        $seedsFolder        = $defaults[static::KEY_SEEDS_FOLDER] ?? null;
        $seedsListFile      = $defaults[static::KEY_SEEDS_LIST_FILE] ?? null;

        assert(
            $modelsFolder !== null && empty(glob($modelsFolder)) === false,
            "Invalid Models folder `$modelsFolder`."
        );
        assert(empty($modelsFileMask) === false, "Invalid Models file mask `$modelsFileMask`.");
        assert(
            $migrationsFolder !== null && empty(glob($migrationsFolder)) === false,
            "Invalid Migrations folder `$migrationsFolder`."
        );
        assert(file_exists($migrationsListFile) === true, "Invalid Migrations file `$migrationsListFile`.");
        assert(
            $seedsFolder !== null && empty(glob($seedsFolder)) === false,
            "Invalid Seeds folder `$seedsFolder`."
        );
        assert(file_exists($seedsListFile) === true, "Invalid Seeds file `$seedsListFile`.");

        $modelsPath = $modelsFolder . DIRECTORY_SEPARATOR . $modelsFileMask;

        $seedInit = $defaults[static::KEY_SEED_INIT] ?? null;
        assert(
            (
                $seedInit === null ||
                $this->checkPublicStaticCallable($seedInit, [ContainerInterface::class, 'string']) === true
            ),
            'Seed init should be either `null` or static callable.'
        );

        $defaults[static::KEY_MODELS_SCHEMA_INFO] = $this->getModelsSchemaInfo($modelsPath);

        return $defaults;
    }

    /**
     * @return array
     */
    protected function getSettings(): array
    {
        return [
            static::KEY_MODELS_FILE_MASK => '*.php',
            static::KEY_SEED_INIT        => null,
        ];
    }

    /**
     * @param string $modelsPath
     *
     * @return array
     *
     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
     */
    private function getModelsSchemaInfo(string $modelsPath): array
    {
        // check reverse relationships
        $requireReverseRel = true;

        $registered    = [];
        $modelSchemas  = new ModelSchemaInfo();
        $registerModel = function ($modelClass) use ($modelSchemas, &$registered, $requireReverseRel) {
            /** @var ModelInterface $modelClass */
            $modelSchemas->registerClass(
                $modelClass,
                $modelClass::getTableName(),
                $modelClass::getPrimaryKeyName(),
                $modelClass::getAttributeTypes(),
                $modelClass::getAttributeLengths()
            );

            $relationships = $modelClass::getRelationships();

            if (array_key_exists(RelationshipTypes::BELONGS_TO, $relationships) === true) {
                foreach ($relationships[RelationshipTypes::BELONGS_TO] as $relName => list($rClass, $fKey, $rRel)) {
                    /** @var string $rClass */
                    $modelSchemas->registerBelongsToOneRelationship($modelClass, $relName, $fKey, $rClass, $rRel);
                    $registered[(string)$modelClass][$relName] = true;
                    $registered[$rClass][$rRel]                = true;

                    // Sanity check. Every `belongs_to` should be paired with `has_many` on the other side.
                    /** @var ModelInterface $rClass */
                    $rRelationships   = $rClass::getRelationships();
                    $isRelationshipOk = $requireReverseRel === false ||
                        (isset($rRelationships[RelationshipTypes::HAS_MANY][$rRel]) === true &&
                            $rRelationships[RelationshipTypes::HAS_MANY][$rRel] === [$modelClass, $fKey, $relName]);
                    /** @var string $modelClass */

                    assert($isRelationshipOk, "`belongsTo` relationship `$relName` of class $modelClass " .
                        "should be paired with `hasMany` relationship.");
                }
            }

            if (array_key_exists(RelationshipTypes::HAS_MANY, $relationships) === true) {
                foreach ($relationships[RelationshipTypes::HAS_MANY] as $relName => list($rClass, $fKey, $rRel)) {
                    // Sanity check. Every `has_many` should be paired with `belongs_to` on the other side.
                    /** @var ModelInterface $rClass */
                    $rRelationships   = $rClass::getRelationships();
                    $isRelationshipOk = $requireReverseRel === false ||
                        (isset($rRelationships[RelationshipTypes::BELONGS_TO][$rRel]) === true &&
                            $rRelationships[RelationshipTypes::BELONGS_TO][$rRel] === [$modelClass, $fKey, $relName]);
                    /** @var string $modelClass */
                    assert($isRelationshipOk, "`hasMany` relationship `$relName` of class $modelClass " .
                        "should be paired with `belongsTo` relationship.");
                }
            }

            if (array_key_exists(RelationshipTypes::BELONGS_TO_MANY, $relationships) === true) {
                foreach ($relationships[RelationshipTypes::BELONGS_TO_MANY] as $relName => $data) {
                    if (isset($registered[(string)$modelClass][$relName]) === true) {
                        continue;
                    }
                    /** @var string $rClass */
                    list($rClass, $iTable, $fKeyPrimary, $fKeySecondary, $rRel) = $data;
                    $modelSchemas->registerBelongsToManyRelationship(
                        $modelClass,
                        $relName,
                        $iTable,
                        $fKeyPrimary,
                        $fKeySecondary,
                        $rClass,
                        $rRel
                    );
                    $registered[(string)$modelClass][$relName] = true;
                    $registered[$rClass][$rRel]                = true;
                }
            }
        };

        $modelClasses = iterator_to_array($this->selectClasses($modelsPath, ModelInterface::class));
        array_map($registerModel, $modelClasses);

        $data = $modelSchemas->getData();

        return $data;
    }
}