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<?php |
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namespace App\Services; |
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use App\Models\Lookup\JobPosterStatusTransition; |
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use App\Models\User; |
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class JobStatusTransitionManager |
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{ |
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/** |
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* The list of all status transitions. |
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* |
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* @var \Illuminate\Support\Collection |
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*/ |
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private $status_transitions = null; |
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/** |
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* Return the collection of all transitions. |
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* This method is meant to cache the results from the database. |
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* |
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* @return \Illuminate\Support\Collection |
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*/ |
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protected function transitions() |
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{ |
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if ($this->status_transitions == null) { |
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$this->status_transitions = JobPosterStatusTransition::all(); |
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} |
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return $this->status_transitions; |
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} |
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/** |
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* Returns true if a JobStatusTransition exists with these $from and $to keys. |
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* |
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* @param string $from |
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* @param string $to |
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* @return boolean |
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*/ |
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public function isLegalTransition(string $from, string $to): bool |
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{ |
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return $this->transitions()->some(function ($transition) use ($from, $to) { |
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return $transition->from->key === $from |
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&& $transition->to->key === $to; |
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}); |
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} |
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/** |
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* Return an array of the keys of all the possible legal destination states. |
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* |
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* @param string $from |
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* @return string[] |
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*/ |
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public function legalDestinations(string $from) |
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{ |
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return $this->legalTransitions($from) |
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->pluck('to.key') |
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->unique() |
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->all(); |
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} |
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/** |
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* Return collection of all transitions models with same from key. |
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* |
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* @param string $from |
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* @return \Illuminate\Support\Collection |
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*/ |
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public function legalTransitions(string $from) |
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{ |
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return $this->transitions()->where('from.key', $from); |
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} |
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/** |
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* Does the user have the correct role to claim ownership of this transition. |
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* |
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* @param User $user |
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* @param JobPosterStatusTransition $transition |
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* @return boolean |
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*/ |
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protected function userOwnsTransition(User $user, JobPosterStatusTransition $transition): bool |
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{ |
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return $user->isAdmin() |
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|| $user->user_role_id === $transition->owner_user_role_id; |
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} |
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/** |
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* Returns true if there is a legal transition exists with these from and to keys, |
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* which this user has permissions for. |
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* |
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* @param User $user |
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* @param string $from |
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* @param string $to |
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* @return boolean |
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*/ |
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public function userCanTransition(User $user, string $from, string $to): bool |
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{ |
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return $this->transitions()->some(function ($transition) use ($user, $from, $to) { |
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return $transition->from->key === $from |
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&& $transition->to->key === $to |
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&& $this->userOwnsTransition($user, $transition); |
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}); |
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} |
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} |
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GCTC-NTGC /
TalentCloud
