mirror of
https://github.com/ConnectedHumber/Air-Quality-Web
synced 2024-11-25 06:53:00 +00:00
94 lines
3.6 KiB
PHP
94 lines
3.6 KiB
PHP
<?php
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namespace AirQuality\Repositories;
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use \AirQuality\Database;
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use \SBRL\TomlConfig;
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/**
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* Fetches measurement readings from a MariaDB database.
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*/
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class MariaDBMeasurementDataRepository implements IMeasurementDataRepository {
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public static $table_name_metadata = "readings";
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public static $table_name_values = "reading_values";
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public static $column_values_id = "id";
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public static $column_values_reading_id = "reading_id";
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public static $column_values_value = "value";
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public static $column_values_reading_type = "reading_value_types_id";
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public static $column_metadata_id = "id";
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public static $column_metadata_storedon = "storedon";
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public static $column_metadata_recordedon = "recordedon";
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public static $column_metadata_device_id = "device_id";
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public static $column_metadata_lat = "reading_latitude";
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public static $column_metadata_long = "reading_longitude";
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// ------------------------------------------------------------------------
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/** @var TomlConfig */
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private $settings;
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/**
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* The database connection.
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* @var Database
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*/
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private $database;
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/** Function that gets a static variable by it's name. Useful in preparing SQL queries. */
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private $get_static;
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private $get_static_extra;
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function __construct(Database $in_database, TomlConfig $in_settings) {
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$this->database = $in_database;
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$this->settings = $in_settings;
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$this->get_static = function($name) { return self::$$name; };
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$this->get_static_extra = function($class_name, $name) {
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return $class_name::$$name;
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};
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}
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public function get_readings_by_date(\DateTime $datetime, string $reading_type) {
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$s = $this->get_static;
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$o = $this->get_static_extra;
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return $this->database->query(
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"SELECT
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{$s("table_name_values")}.*,
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{$s("table_name_metadata")}.{$s("column_metadata_device_id")},
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COALESCE(
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{$s("table_name_metadata")}.{$s("column_metadata_recordedon")},
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{$s("table_name_metadata")}.{$s("column_metadata_storedon")}
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) AS datetime,
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COALESCE(
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{$s("table_name_metadata")}.{$s("column_metadata_lat")},
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{$o(MariaDBDeviceRepository::class, "table_name")}.{$o(MariaDBDeviceRepository::class, "column_lat")}
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) AS latitude,
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COALESCE(
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{$s("table_name_metadata")}.{$s("column_metadata_long")},
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{$o(MariaDBDeviceRepository::class, "table_name")}.{$o(MariaDBDeviceRepository::class, "column_long")}
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) AS longitude,
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COUNT({$s("table_name_metadata")}.{$s("column_metadata_device_id")}) AS record_count
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FROM {$s("table_name_values")}
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JOIN {$s("table_name_metadata")} ON {$s("table_name_values")}.{$s("column_values_reading_id")} = {$s("table_name_metadata")}.id
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JOIN {$o(MariaDBDeviceRepository::class, "table_name")} ON {$s("table_name_metadata")}.{$s("column_metadata_device_id")} = {$o(MariaDBDeviceRepository::class, "table_name")}.{$o(MariaDBDeviceRepository::class, "column_device_id")}
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WHERE ABS(TIME_TO_SEC(TIMEDIFF(
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:datetime,
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COALESCE(
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{$s("table_name_metadata")}.{$s("column_metadata_recordedon")},
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{$s("table_name_metadata")}.{$s("column_metadata_storedon")}
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)
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))) < :max_reading_timediff
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AND
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{$s("table_name_values")}.{$s("column_values_reading_type")} = :reading_type
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GROUP BY {$s("table_name_metadata")}.{$s("column_metadata_device_id")}
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ORDER BY {$s("table_name_metadata")}.{$s("column_metadata_recordedon")}
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", [
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// The database likes strings, not PHP DateTime() instances
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"datetime" => $datetime->format(\DateTime::ISO8601),
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"reading_type" => $reading_type,
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"max_reading_timediff" => $this->settings->get("data.max_reading_timediff")
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]
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)->fetchAll();
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}
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}
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