class.SkillUsageDBRepository.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\Skill\Usage;
 
class SkillUsageDBRepository
{
    protected \ilDBInterface $db;
 
    public function __construct(
        ?\ilDBInterface $db = null
    ) {
        global $DIC;
 
        $this->db = ($db) ?: $DIC->database();
    }
 
    public function add(int $obj_id, int $skill_id, int $tref_id): void
    {
        $this->db->replace(
            "skl_usage",
            [
                "obj_id" => ["integer", $obj_id],
                "skill_id" => ["integer", $skill_id],
                "tref_id" => ["integer", $tref_id]
            ],
            []
        );
    }
 
    public function remove(int $obj_id, int $skill_id, int $tref_id): void
    {
        $this->db->manipulate(
            "DELETE FROM skl_usage WHERE " .
            " obj_id = " . $this->db->quote($obj_id, "integer") .
            " AND skill_id = " . $this->db->quote($skill_id, "integer") .
            " AND tref_id = " . $this->db->quote($tref_id, "integer")
        );
    }
 
    public function removeFromObject(int $obj_id): void
    {
        $this->db->manipulate(
            "DELETE FROM skl_usage WHERE " .
            " obj_id = " . $this->db->quote($obj_id, "integer")
        );
    }
 
    public function removeForSkill(int $node_id, bool $is_referenece = false): void
    {
        if (!$is_referenece) {
            $this->db->manipulate(
                "DELETE FROM skl_usage WHERE " .
                " skill_id = " . $this->db->quote($node_id, "integer")
            );
        } else {
            $this->db->manipulate(
                "DELETE FROM skl_usage WHERE " .
                " tref_id = " . $this->db->quote($node_id, "integer")
            );
        }
    }
 
    public function getUsages(int $skill_id, int $tref_id): array
    {
        $set = $this->db->query(
            "SELECT obj_id FROM skl_usage " .
            " WHERE skill_id = " . $this->db->quote($skill_id, "integer") .
            " AND tref_id = " . $this->db->quote($tref_id, "integer")
        );
        $obj_ids = [];
        while ($rec = $this->db->fetchAssoc($set)) {
            $obj_ids[] = (int) $rec["obj_id"];
        }
 
        return $obj_ids;
    }
 
    public function getUsageInfoGeneric(
        array $cskill_ids,
        string $usage_type,
        string $table,
        string $key_field,
        string $skill_field = "skill_id",
        string $tref_field = "tref_id"
    ): array {
        $usages = [];
 
        $w = "WHERE";
        $q = "SELECT " . $key_field . ", " . $skill_field . ", " . $tref_field . " FROM " . $table . " ";
        foreach ($cskill_ids as $sk) {
            $q .= $w . " (" . $skill_field . " = " . $this->db->quote($sk["skill_id"], "integer") .
                " AND " . $tref_field . " = " . $this->db->quote($sk["tref_id"], "integer") . ") ";
            $w = "OR";
        }
        $q .= " GROUP BY " . $key_field . ", " . $skill_field . ", " . $tref_field;
 
        $set = $this->db->query($q);
        while ($rec = $this->db->fetchAssoc($set)) {
            $usages[$rec[$skill_field] . ":" . $rec[$tref_field]][$usage_type][] =
                array("key" => $rec[$key_field]);
        }
 
        return $usages;
    }
}