mmikkel\reasons\services\ReasonsService

Complexity

Total Complexity

54

Size/Duplication

Total Lines	527
Duplicated Lines	0 %

Importance

Changes	13
Bugs	0	Features	0

18 Methods

Rating	Name	Duplication	Size	Complexity
A	normalizeConditionalsFromProjectConfig()	0	25	4
A	onProjectConfigDelete()	0	25	3
A	onProjectConfigRebuild()	0	27	5
A	getData()	0	21	4
A	onProjectConfigChange()	0	58	5
A	deleteFieldLayoutConditionals()	0	18	2
A	prepConditionalsForProjectConfig()	0	22	3
A	clearCache()	0	3	1
A	getCacheKey()	0	7	1
B	getSources()	0	42	7
A	getConditionals()	0	27	4
A	saveFieldLayoutConditionals()	0	24	2
A	getAllFields()	0	9	2
A	getToggleFields()	0	21	4
A	getFieldIdByUid()	0	10	2
A	getToggleFieldTypes()	0	15	1
A	getFieldUidById()	0	10	2
A	getFieldIdsByHandle()	0	8	2

<?php
/**
 * Reasons plugin for Craft CMS 3.x
 *
 * Adds conditionals to field layouts.
 *
 * @link      https://vaersaagod.no
 * @copyright Copyright (c) 2020 Mats Mikkel Rummelhoff
 */

namespace mmikkel\reasons\services;

use Craft;
use craft\base\Field;
use craft\db\Query;
use craft\base\Component;
use craft\base\FieldInterface;
use craft\db\Table;
use craft\elements\User;
use craft\events\ConfigEvent;
use craft\events\RebuildConfigEvent;
use craft\fields\Assets;
use craft\fields\Categories;
use craft\fields\Checkboxes;
use craft\fields\Dropdown;
use craft\fields\Entries;
use craft\fields\Number;
use craft\fields\Lightswitch;
use craft\fields\MultiSelect;
use craft\fields\PlainText;
use craft\fields\RadioButtons;
use craft\fields\Tags;
use craft\fields\Users;
use craft\helpers\Db;
use craft\helpers\Json;
use craft\helpers\StringHelper;
use craft\models\FieldLayout;
use craft\records\EntryType;

use mmikkel\reasons\Reasons;

/**
 * @author    Mats Mikkel Rummelhoff
 * @package   Reasons
 * @since     2.0.0
 */
class ReasonsService extends Component
{

    /** @var int */
    const CACHE_TTL = 1800;

    /** @var Field[] */
    protected $allFields;

    /** @var Field[] */
    protected $toggleFields;

    /** @var array */
    protected $sources;

    /** @var int[] */
    protected $fieldIdsByUid;

    /** @var string[] */
    protected $fieldUidsById;

    // Public Methods
    // =========================================================================

    /**
     * Saves a field layout's conditionals, via the Project Config
     *
     * @param FieldLayout $layout
     * @param string|array $conditionals
     * @return bool
     * @throws \yii\base\ErrorException
     * @throws \yii\base\Exception
     * @throws \yii\base\NotSupportedException
     * @throws \yii\web\ServerErrorHttpException
     */
    public function saveFieldLayoutConditionals(FieldLayout $layout, $conditionals): bool
    {

        $uid = (new Query())
            ->select(['uid'])
            ->from('{{%reasons}}')
            ->where(['fieldLayoutId' => $layout->id])
            ->scalar();

        $isNew = !$uid;
        if ($isNew) {
            $uid = StringHelper::UUID();
        }

        $conditionals = $this->prepConditionalsForProjectConfig($conditionals);

        // Save it to the project config
        $path = "reasons_conditionals.{$uid}";
        Craft::$app->getProjectConfig()->set($path, [
            'fieldLayoutUid' => $layout->uid,
            'conditionals' => $conditionals,
        ]);

        return true;
    }

    /**
     * Deletes a field layout's conditionals, via the Project Config
     *
     * @param FieldLayout $layout
     * @return bool
     */
    public function deleteFieldLayoutConditionals(FieldLayout $layout): bool
    {

        $uid = (new Query())
            ->select(['uid'])
            ->from('{{%reasons}}')
            ->where(['fieldLayoutId' => $layout->id])
            ->scalar();

        if (!$uid) {
            return false;
        }

        // Remove it from the project config
        $path = "reasons_conditionals.{$uid}";
        Craft::$app->getProjectConfig()->remove($path);

        return true;
    }

    /**
     * @param ConfigEvent $event
     * @return void
     * @throws \Throwable
     * @throws \yii\db\Exception
     */
    public function onProjectConfigChange(ConfigEvent $event)
    {

        $this->clearCache();

        $uid = $event->tokenMatches[0];
        $data = $event->newValue;

        $id = (new Query())
            ->select(['id'])
            ->from('{{%reasons}}')
            ->where(['uid' => $uid])
            ->scalar();

        $isNew = empty($id);

        if ($isNew) {

            // Save new conditionals
            $fieldLayoutId = Db::idByUid(Table::FIELDLAYOUTS, $data['fieldLayoutUid']);

            if ($fieldLayoutId === null) {
                // The field layout might not've synced yet. Defer to Project Config
                Craft::$app->getProjectConfig()->defer($event, [$this, __FUNCTION__]);
                return;
            }

            $transaction = Craft::$app->getDb()->beginTransaction();

            try {
                Craft::$app->db->createCommand()
                    ->insert('{{%reasons}}', [
                        'fieldLayoutId' => $fieldLayoutId,
                        'conditionals' => $data['conditionals'],
                        'uid' => $uid,
                    ])
                    ->execute();
                $transaction->commit();
            } catch (\Throwable $e) {
                $transaction->rollBack();
                throw $e;
            }

        } else {

            // Update existing conditionals
            $transaction = Craft::$app->getDb()->beginTransaction();

            try {
                Craft::$app->db->createCommand()
                    ->update('{{%reasons}}', [
                        'conditionals' => $data['conditionals'],
                    ], ['id' => $id])
                    ->execute();
                $transaction->commit();
            } catch (\Throwable $e) {
                $transaction->rollBack();
                throw $e;
            }
        }

    }

    /**
     * @param ConfigEvent $event
     * @return void
     * @throws \Throwable
     * @throws \yii\db\Exception
     */
    public function onProjectConfigDelete(ConfigEvent $event)
    {

        $this->clearCache();

        $uid = $event->tokenMatches[0];

        $id = (new Query())
            ->select(['id'])
            ->from('{{%reasons}}')
            ->where(['uid' => $uid])
            ->scalar();

        if ($id) {

            $transaction = Craft::$app->getDb()->beginTransaction();

            try {
                Craft::$app->db->createCommand()
                    ->delete('{{%reasons}}', ['id' => $id])
                    ->execute();
                $transaction->commit();
            } catch (\Throwable $e) {
                $transaction->rollBack();
                throw $e;
            }
        }

    }

    /**
     * @param RebuildConfigEvent $event
     * @return void
     */
    public function onProjectConfigRebuild(RebuildConfigEvent $event)
    {

        Craft::$app->getProjectConfig()->remove('reasons_conditionals');

        $event->config['reasons_conditionals'] = [];

        $rows = (new Query())
            ->select(['reasons.uid', 'reasons.conditionals', 'fieldlayouts.uid AS fieldLayoutUid'])
            ->from('{{%reasons}} AS reasons')
            ->innerJoin(['fieldlayouts' => Table::FIELDLAYOUTS], '[[fieldlayouts.id]] = [[reasons.fieldLayoutId]]')
            ->all();

        foreach ($rows as $row) {
            $uid = $row['uid'] ?? null;
            $conditionals = $row['conditionals'] ?? null;
            $fieldLayoutUid = $row['fieldLayoutUid'] ?? null;
            if (!$uid || !$conditionals || !$fieldLayoutUid) {
                continue;
            }
            $event->config['reasons_conditionals'][$uid] = [
                'conditionals' => $conditionals,
                'fieldLayoutUid' => $fieldLayoutUid,
            ];
        }

        $this->clearCache();
    }

    /**
     * Clears Reasons' data caches
     *
     * @return void
     */
    public function clearCache()
    {
        Craft::$app->getCache()->delete($this->getCacheKey());
    }

    /**
     * @return array|mixed
     */
    public function getData()
    {
        $doCacheData = !Craft::$app->getConfig()->getGeneral()->devMode;
        $cacheKey = $this->getCacheKey();

        if ($doCacheData && $data = Craft::$app->getCache()->get($cacheKey)) {
            return $data;
        }

        $data = [
            'conditionals' => $this->getConditionals(),
            'toggleFieldTypes' => $this->getToggleFieldTypes(),
            'toggleFields' => $this->getToggleFields(),
            'fieldIds' => $this->getFieldIdsByHandle(),
        ];

        if ($doCacheData) {
            Craft::$app->getCache()->set($cacheKey, $data, self::CACHE_TTL);
        }

        return $data;
    }

    /**
     * @param string|array $conditionals
     * @return string|null
     */
    protected function prepConditionalsForProjectConfig($conditionals): ?string
    {
        if (!$conditionals) {
            return null;
        }
        $return = [];
        $conditionals = Json::decodeIfJson($conditionals);
        foreach ($conditionals as $targetFieldId => $statements) {
            $targetFieldId = (int)$targetFieldId;
            $targetFieldUid = $this->getFieldUidById($targetFieldId);
            $return[$targetFieldUid] = \array_map(function (array $rules) {
                return \array_map(function (array $rule) {
                    $fieldId = (int)$rule['fieldId'];
                    return [
                        'field' => $this->getFieldUidById($fieldId),
                        'compare' => $rule['compare'],
                        'value' => $rule['value'],
                    ];
                }, $rules);
            }, $statements);
        }
        return Json::encode($return);
    }

    /**
     * @param string|array $conditionals
     * @return array|null
     */
    protected function normalizeConditionalsFromProjectConfig($conditionals): ?array
    {
        if (!$conditionals) {
            return null;
        }
        $return = [];
        try {
            $conditionals = Json::decodeIfJson($conditionals);
            foreach ($conditionals as $targetFieldUid => $statements) {
                $targetFieldId = $this->getFieldIdByUid($targetFieldUid);
                $return["$targetFieldId"] = \array_map(function (array $rules) {
                    return \array_map(function (array $rule) {
                        $fieldUid = $rule['field'];
                        return [
                            'fieldId' => $this->getFieldIdByUid($fieldUid),
                            'compare' => $rule['compare'],
                            'value' => $rule['value'],
                        ];
                    }, $rules);
                }, $statements);
            }
        } catch (\Throwable $e) {
            Craft::error($e->getMessage(), __METHOD__);
        }
        return $return;
    }

    /**
     * Returns all conditionals, mapped by source key
     *
     * @return array
     */
    protected function getConditionals(): array
    {

        // Get all conditionals from database
        $rows = (new Query())
            ->select(['reasons.id', 'reasons.fieldLayoutId', 'reasons.conditionals'])
            ->from('{{%reasons}} AS reasons')
            ->innerJoin(['fieldlayouts' => Table::FIELDLAYOUTS], '[[fieldlayouts.id]] = [[reasons.fieldLayoutId]]')
            ->all();

        // Map conditionals to field layouts, and convert field uids to ids
        $conditionals = [];
        foreach ($rows as $row) {
            $conditionals["fieldLayout:{$row['fieldLayoutId']}"] = $this->normalizeConditionalsFromProjectConfig($row['conditionals']);
        }

        // Map conditionals to sources
        $conditionalsBySources = [];
        $sources = $this->getSources();
        foreach ($sources as $sourceId => $fieldLayoutId) {
            if (!isset($conditionals["fieldLayout:{$fieldLayoutId}"])) {
                continue;
            }
            $conditionalsBySources[$sourceId] = $conditionals["fieldLayout:{$fieldLayoutId}"];
        }

        return $conditionalsBySources;
    }

    /**
     * @return array
     */
    protected function getSources(): array
    {

        if (!isset($this->sources)) {

            $sources = [];

            $entryTypeRecords = EntryType::find()->all();
            /** @var EntryType $entryTypeRecord */
            foreach ($entryTypeRecords as $entryTypeRecord) {
                $sources["entryType:{$entryTypeRecord->id}"] = (int)$entryTypeRecord->fieldLayoutId;
                $sources["section:{$entryTypeRecord->sectionId}"] = (int)$entryTypeRecord->fieldLayoutId;
            }

            $categoryGroups = Craft::$app->getCategories()->getAllGroups();
            foreach ($categoryGroups as $categoryGroup) {
                $sources["categoryGroup:{$categoryGroup->id}"] = (int)$categoryGroup->fieldLayoutId;
            }

            $tagGroups = Craft::$app->getTags()->getAllTagGroups();
            foreach ($tagGroups as $tagGroup) {
                $sources["tagGroup:{$tagGroup->id}"] = (int)$tagGroup->fieldLayoutId;
            }

            $volumes = Craft::$app->getVolumes()->getAllVolumes();
            foreach ($volumes as $volume) {
                $sources["assetSource:{$volume->id}"] = (int)$volume->fieldLayoutId;
            }

            $globalSets = Craft::$app->getGlobals()->getAllSets();
            foreach ($globalSets as $globalSet) {
                $sources["globalSet:{$globalSet->id}"] = (int)$globalSet->fieldLayoutId;
            }

            $usersFieldLayout = Craft::$app->getFields()->getLayoutByType(User::class);
            $sources['users'] = $usersFieldLayout->id;

            $this->sources = $sources;

        }

        return $this->sources;
    }

    /**
     * Returns all toggleable fields
     *
     * @return array
     */
    protected function getToggleFields(): array
    {
        if (!isset($this->toggleFields)) {
            $this->toggleFields = [];
            $fields = $this->getAllFields();
            $toggleFieldTypes = $this->getToggleFieldTypes();
            foreach ($fields as $field) {
                $fieldType = \get_class($field);
                if (!\in_array($fieldType, $toggleFieldTypes)) {
                    continue;
                }
                $this->toggleFields[] = [
                    'id' => (int)$field->id,
                    'handle' => $field->handle,
                    'name' => $field->name,
                    'type' => $fieldType,
                    'settings' => $field->getSettings(),
                ];
            }
        }
        return $this->toggleFields;
    }

    /**
     * Returns all toggleable fieldtype classnames
     *
     * @return string[]
     */
    protected function getToggleFieldTypes(): array
    {
        return [
            Lightswitch::class,
            Dropdown::class,
            Checkboxes::class,
            MultiSelect::class,
            RadioButtons::class,
            Number::class,
            PlainText::class,
            Entries::class,
            Categories::class,
            Tags::class,
            Assets::class,
            Users::class,
        ];
    }

    /**
     * Returns all global field IDs, indexed by handle
     *
     * @return array
     */
    protected function getFieldIdsByHandle(): array
    {
        $handles = [];
        $fields = $this->getAllFields();
        foreach ($fields as $field) {
            $handles[$field->handle] = (int)$field->id;
        }
        return $handles;
    }

    /**
     * @return Field[]
     */
    protected function getAllFields(): array
    {
        if (!isset($this->allFields)) {
            $globalFields = Craft::$app->getFields()->getAllFields('global');
            $this->allFields = \array_filter($globalFields, function (FieldInterface $field) {
                return $field instanceof Field;
            });
        }
        return $this->allFields;
    }

    /**
     * Return the UID for a field, based on its database ID
     *
     * @param int $fieldId
     * @return string
     */
    protected function getFieldUidById(int $fieldId): string
    {
        if (!isset($this->fieldUidsById)) {
            $allFields = $this->getAllFields();
            $this->fieldUidsById = \array_reduce($allFields, function (array $carry, Field $field) {
                $carry["{$field->id}"] = $field->uid;
                return $carry;
            }, []);
        }
        return $this->fieldUidsById["$fieldId"];
    }

    /**
     * Return the database ID for a field, based on its UID
     *
     * @param string $fieldUid
     * @return int
     */
    protected function getFieldIdByUid(string $fieldUid): int
    {
        if (!isset($this->fieldIdsByUid)) {
            $allFields = $this->getAllFields();
            $this->fieldIdsByUid = \array_reduce($allFields, function (array $carry, Field $field) {
                $carry[$field->uid] = (int)$field->id;
                return $carry;
            }, []);
        }
        return $this->fieldIdsByUid[$fieldUid];
    }

    /**
     * @return string
     */
    protected function getCacheKey(): string
    {
        $reasons = Reasons::getInstance();
        return \implode('-', [
            $reasons->getHandle(),
            $reasons->getVersion(),
            $reasons->schemaVersion
        ]);
    }
}