83 lines
2.5 KiB
PHP
83 lines
2.5 KiB
PHP
<?php
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define('MSZ_USER_RELATION_NONE', 0);
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define('MSZ_USER_RELATION_FOLLOW', 1);
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define('MSZ_USER_RELATION_TYPES', [
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MSZ_USER_RELATION_NONE,
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MSZ_USER_RELATION_FOLLOW,
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]);
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function user_relation_is_valid_type(int $type): bool
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{
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return in_array($type, MSZ_USER_RELATION_TYPES, true);
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}
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function user_relation_set(int $userId, int $subjectId, int $type = MSZ_USER_RELATION_FOLLOW): bool
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{
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if ($type === MSZ_USER_RELATION_NONE) {
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return user_relation_remove($userId, $subjectId);
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}
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if ($userId < 1 || $subjectId < 1 || !user_relation_is_valid_type($type)) {
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return false;
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}
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$addRelation = db_prepare('
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REPLACE INTO `msz_user_relations`
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(`user_id`, `subject_id`, `relation_type`)
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VALUES
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(:user_id, :subject_id, :type)
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');
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$addRelation->bindValue('user_id', $userId);
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$addRelation->bindValue('subject_id', $subjectId);
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$addRelation->bindValue('type', $type);
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$addRelation->execute();
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return $addRelation->execute();
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}
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function user_relation_remove(int $userId, int $subjectId): bool
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{
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if ($userId < 1 || $subjectId < 1) {
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return false;
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}
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$removeRelation = db_prepare('
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DELETE FROM `msz_user_relations`
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WHERE `user_id` = :user_id
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AND `subject_id` = :subject_id
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');
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$removeRelation->bindValue('user_id', $userId);
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$removeRelation->bindValue('subject_id', $subjectId);
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return $removeRelation->execute();
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}
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function user_relation_info(int $userId, int $subjectId): array
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{
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$getRelationInfo = db_prepare('
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SELECT
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:user_id as `user_id_arg`, :subject_id as `subject_id_arg`,
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(
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SELECT `relation_type`
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FROM `msz_user_relations`
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WHERE `user_id` = `user_id_arg`
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AND `subject_id` = `subject_id_arg`
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) as `user_relation`,
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(
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SELECT `relation_type`
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FROM `msz_user_relations`
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WHERE `subject_id` = `user_id_arg`
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AND `user_id` = `subject_id_arg`
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) as `subject_relation`,
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(
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SELECT MAX(`relation_created`)
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FROM `msz_user_relations`
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WHERE (`user_id` = `user_id_arg` AND `subject_id` = `subject_id_arg`)
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OR (`user_id` = `subject_id_arg` AND `subject_id` = `user_id_arg`)
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) as `relation_created`
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');
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$getRelationInfo->bindValue('user_id', $userId);
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$getRelationInfo->bindValue('subject_id', $subjectId);
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return db_fetch($getRelationInfo);
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}
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