Air-Quality-Web/logic/Repositories/MariaDBMeasurementTypeRepos...

103 lines
3.3 KiB
PHP

<?php
namespace AirQuality\Repositories;
/**
* Fetches device info from a MariaDB database.
*/
class MariaDBMeasurementTypeRepository implements IMeasurementTypeRepository {
public static $table_name = "reading_value_types";
public static $column_id = "id";
public static $column_short_description = "short_descr";
public static $column_friendly_text = "friendly_text";
// ------------------------------------------------------------------------
/**
* The database connection.
* @var \AirQuality\Database
*/
private $database;
/**
* Functions that get a static variable by it's name. Useful in preparing SQL queries.
* @var callable
*/
private $get_static;
/**
* Functions that get a static variable by it's class and property names. Useful in preparing SQL queries.
* @var callable
*/
private $get_static_extra;
function __construct(\AirQuality\Database $in_database) {
$this->database = $in_database;
$this->get_static = function($name) { return self::$$name; };
$this->get_static_extra = function($class_name, $name) {
return $class_name::$$name;
};
}
public function is_valid_type(int $id) : bool {
$s = $this->get_static;
return !empty($this->database->query(
"SELECT {$s("column_id")} FROM {$s("table_name")} WHERE {$s("column_id")} = :id;", [
"id" => $id
]
)->fetchColumn());
}
public function get_id(string $short_descr) {
$s = $this->get_static;
$result = $this->database->query(
"SELECT {$s("column_id")} FROM {$s("table_name")} WHERE {$s("column_short_description")} = :short_descr", [
"short_descr" => $short_descr
]
)->fetchColumn();
if($result == false)
return null;
return $result;
}
public function get_friendly_name(int $id) : string {
// TODO: Cache results here? Maybe https://packagist.org/packages/thumbtack/querycache will be of some use
$s = $this->get_static;
return $this->database->query(
"SELECT {$s("column_friendly_text")} FROM {$s("table_name")} WHERE $this->column_id = :id;", [
"id" => $id
]
)->fetchColumn();
}
public function get_all_types() {
$s = $this->get_static;
return $this->database->query(
"SELECT * FROM {$s("table_name")}"
)->fetchAll();
}
public function get_types_by_device($device_id) {
$s = $this->get_static;
$o = $this->get_static_extra;
return $this->database->query(
"SELECT
{$s("table_name")}.*,
COUNT({$s("table_name")}.{$s("column_id")}) AS count
FROM {$o(MariaDBMeasurementDataRepository::class, "table_name_values")}
JOIN {$o(MariaDBMeasurementDataRepository::class, "table_name_metadata")} ON
{$o(MariaDBMeasurementDataRepository::class, "table_name_metadata")}.{$o(MariaDBMeasurementDataRepository::class, "column_metadata_id")} = {$o(MariaDBMeasurementDataRepository::class, "table_name_values")}.{$o(MariaDBMeasurementDataRepository::class, "column_values_reading_id")}
JOIN {$s("table_name")} ON
{$s("table_name")}.{$s("column_id")} = {$o(MariaDBMeasurementDataRepository::class, "table_name_values")}.{$o(MariaDBMeasurementDataRepository::class, "column_values_reading_type")}
WHERE {$o(MariaDBMeasurementDataRepository::class, "table_name_metadata")}.{$o(MariaDBMeasurementDataRepository::class, "column_metadata_device_id")} = :device_id
GROUP BY {$s("table_name")}.{$s("column_id")};", [
"device_id" => $device_id
]
)->fetchAll();
}
}