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606 lines
20 KiB
PHP
606 lines
20 KiB
PHP
<?php
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/**
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* Any type of thermostat.
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*
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* @author Jon Ziebell
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*/
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class thermostat extends cora\crud {
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public static $exposed = [
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'private' => [
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'read_id',
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'sync',
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'dismiss_alert',
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'restore_alert',
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'set_reported_system_types',
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'generate_profile',
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'generate_profiles',
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'get_metrics'
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],
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'public' => []
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];
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public static $cache = [
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'sync' => 180, // 3 Minutes
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'generate_profile' => 604800, // 7 Days
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'get_metrics' => 604800 // 7 Days
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];
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/**
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* Updates a thermostat normally, plus does the generated columns.
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*
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* @param array $attributes
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*
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* @return array
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*/
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public function update($attributes) {
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return parent::update(array_merge($attributes, $this->get_generated_columns($attributes)));
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}
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/**
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* Get all of the generated columns.
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*
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* @param array $attributes The thermostat.
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*
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* @return array The generated columns only.
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*/
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private function get_generated_columns($attributes) {
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$generated_columns = [];
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if(isset($attributes['system_type']) === true) {
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foreach(['heat', 'heat_auxiliary', 'auxiliary_heat', 'cool'] as $mode) {
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if($attributes['system_type']['reported'][$mode]['equipment'] !== null) {
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$generated_columns['system_type_' . $mode] = $attributes['system_type']['reported'][$mode]['equipment'];
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} else {
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$generated_columns['system_type_' . $mode] = $attributes['system_type']['detected'][$mode]['equipment'];
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}
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if($attributes['system_type']['reported'][$mode]['stages'] !== null) {
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$generated_columns['system_type_' . $mode . '_stages'] = $attributes['system_type']['reported'][$mode]['stages'];
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} else {
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$generated_columns['system_type_' . $mode . '_stages'] = $attributes['system_type']['detected'][$mode]['stages'];
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}
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}
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}
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if(isset($attributes['property']) === true) {
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foreach(['age', 'square_feet', 'stories', 'structure_type'] as $characteristic) {
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$generated_columns['property_' . $characteristic] = $attributes['property'][$characteristic];
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}
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}
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if(isset($attributes['address_id']) === true) {
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$address = $this->api('address', 'get', $attributes['address_id']);
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if(
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isset($address['normalized']['metadata']) === true &&
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$address['normalized']['metadata'] !== null &&
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isset($address['normalized']['metadata']['latitude']) === true &&
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$address['normalized']['metadata']['latitude'] !== null &&
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isset($address['normalized']['metadata']['longitude']) === true &&
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$address['normalized']['metadata']['longitude'] !== null
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) {
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$generated_columns['address_latitude'] = $address['normalized']['metadata']['latitude'];
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$generated_columns['address_longitude'] = $address['normalized']['metadata']['longitude'];
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} else {
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$generated_columns['address_latitude'] = null;
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$generated_columns['address_longitude'] = null;
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}
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}
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return $generated_columns;
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}
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/**
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* Update the reported system type of this thermostat.
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*
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* @param int $thermostat_id
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* @param array $system_types
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*
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* @return array The updated thermostat.
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*/
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public function set_reported_system_types($thermostat_id, $system_types) {
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// Redundant, but makes sure you have access to edit the thermostat you
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// submitted.
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$thermostat = $this->get($thermostat_id);
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foreach($system_types as $system_type => $value) {
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if(in_array($system_type, ['heat', 'heat_auxiliary', 'auxiliary_heat', 'cool']) === true) {
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$thermostat['system_type']['reported'][$system_type]['equipment'] = $value;
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}
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}
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return $this->update($thermostat);
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}
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/**
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* Normal read, but filter out generated columns. These columns exist only
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* for indexing and searching purposes.
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*
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* @param array $attributes
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* @param array $columns
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*
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* @return array
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*/
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public function read($attributes = [], $columns = []) {
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$thermostats = parent::read($attributes, $columns);
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foreach($thermostats as &$thermostat) {
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unset($thermostat['system_type_heat']);
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unset($thermostat['system_type_heat_stages']);
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unset($thermostat['system_type_heat_auxiliary']);
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unset($thermostat['system_type_heat_auxiliary_stages']);
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unset($thermostat['system_type_cool']);
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unset($thermostat['system_type_cool_stages']);
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unset($thermostat['property_age']);
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unset($thermostat['property_square_feet']);
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unset($thermostat['property_stories']);
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unset($thermostat['property_structure_type']);
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unset($thermostat['address_latitude']);
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unset($thermostat['address_longitude']);
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}
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return $thermostats;
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}
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/**
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* Sync all thermostats for the current user. If we fail to get a lock, fail
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* silently (catch the exception) and just return false.
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*
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* @return boolean true if the sync ran, false if not.
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*/
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public function sync() {
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// Skip this for the demo
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if($this->setting->is_demo() === true) {
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return true;
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}
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try {
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$lock_name = 'thermostat->sync(' . $this->session->get_user_id() . ')';
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$this->database->get_lock($lock_name);
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$this->api('ecobee_thermostat', 'sync');
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$this->api(
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'user',
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'update_sync_status',
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['key' => 'thermostat']
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);
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$this->database->release_lock($lock_name);
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return true;
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} catch(cora\exception $e) {
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return false;
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}
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}
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/**
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* Dismiss an alert.
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*
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* @param int $thermostat_id
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* @param string $guid
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*/
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public function dismiss_alert($thermostat_id, $guid) {
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$thermostat = $this->get($thermostat_id);
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foreach($thermostat['alerts'] as &$alert) {
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if($alert['guid'] === $guid) {
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$alert['dismissed'] = true;
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break;
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}
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}
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$this->update(
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[
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'thermostat_id' => $thermostat_id,
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'alerts' => $thermostat['alerts']
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]
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);
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}
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/**
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* Restore a dismissed alert.
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*
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* @param int $thermostat_id
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* @param string $guid
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*/
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public function restore_alert($thermostat_id, $guid) {
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$thermostat = $this->get($thermostat_id);
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foreach($thermostat['alerts'] as &$alert) {
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if($alert['guid'] === $guid) {
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$alert['dismissed'] = false;
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break;
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}
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}
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$this->update(
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[
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'thermostat_id' => $thermostat_id,
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'alerts' => $thermostat['alerts']
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]
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);
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}
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/**
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* Generate profiles for all thermostats. This pretty much only exists for
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* the cron job.
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*/
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public function generate_profiles() {
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$thermostats = $this->read([
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'inactive' => 0
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]);
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foreach($thermostats as $thermostat) {
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$this->generate_profile(
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$thermostat['thermostat_id']
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);
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}
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$this->api(
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'user',
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'update_sync_status',
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['key' => 'thermostat.generate_profiles']
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);
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}
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/**
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* Generate a new profile for this thermostat.
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*
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* @param int $thermostat_id
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*/
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public function generate_profile($thermostat_id) {
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$this->update([
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'thermostat_id' => $thermostat_id,
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'profile' => $this->api('profile', 'generate', $thermostat_id)
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]);
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}
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/**
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* Compare this thermostat to all other matching ones.
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*
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* @param array $thermosat_id The base thermostat_id.
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* @param array $attributes Optional attributes:
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* property_structure_type
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* property_age
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* property_square_feet
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* property_stories
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*
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* @return array
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*/
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public function get_metrics($thermostat_id, $attributes) {
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$thermostat = $this->get($thermostat_id);
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$generated_columns = $this->get_generated_columns($thermostat);
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if(
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$generated_columns['system_type_heat'] === null ||
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$generated_columns['system_type_heat_stages'] === null ||
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$generated_columns['system_type_cool'] === null ||
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$generated_columns['system_type_cool_stages'] === null
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) {
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throw new cora\exception('System type is not defined.', 10700);
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}
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$where = [];
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$keys_generated_columns = [
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'system_type_heat',
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'system_type_heat_stages',
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'system_type_cool',
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'system_type_cool_stages'
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];
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foreach($keys_generated_columns as $key) {
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$where[] = $this->database->column_equals_value_where(
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$key,
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$generated_columns[$key]
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);
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}
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$keys_required_in_query = [
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'property_age',
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'property_square_feet',
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'property_stories'
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];
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foreach($keys_required_in_query as $key) {
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if(isset($attributes[$key]) === true) {
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$where[] = $this->database->column_equals_value_where(
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$key,
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$attributes[$key]
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);
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} else {
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// Fill these in for query performance.
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$where[] = $this->database->column_equals_value_where(
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$key,
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['operator' => '>', 'value' => 0]
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);
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}
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}
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$keys_optional_in_query = [
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'property_structure_type',
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];
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foreach($keys_optional_in_query as $key) {
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if(isset($attributes[$key]) === true) {
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$where[] = $this->database->column_equals_value_where(
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$key,
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$attributes[$key]
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);
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}
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}
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/**
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* Normally radius implies a circle. In this case it's a square as this
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* helps with some optimization.
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*/
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if(isset($attributes['radius']) === true) {
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if(
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is_array($attributes['radius']) === false ||
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$attributes['radius']['operator'] !== '<'
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) {
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throw new \Exception('Radius must be defined as less than a value.', 10702);
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}
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$radius = (int) $attributes['radius']['value'];
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if(
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isset($generated_columns['address_latitude']) === false ||
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isset($generated_columns['address_longitude']) === false
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) {
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// Require a valid address (latitude/longitude) when using radius.
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throw new cora\exception('Cannot compare by radius if address is invalid.', 10701);
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} else {
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// Latitude is 69mi / °
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$degrees_latitude_delta = $radius / 69 / 2;
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$minimum_latitude = $generated_columns['address_latitude'] - $degrees_latitude_delta;
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$maximum_latitude = $generated_columns['address_latitude'] + $degrees_latitude_delta;
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if ($minimum_latitude < -90) {
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$overflow = abs($minimum_latitude + 90);
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$between_a = [-90, $maximum_latitude];
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sort($between_a);
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$between_b = [90, (90 - $overflow)];
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sort($between_b);
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$where[] = '(`address_latitude` between ' . $between_a[0] . ' and ' . $between_a[1] . ' or `address_latitude` between ' . $between_b[0] . ' and ' . $between_b[1] . ')';
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}
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else if ($maximum_latitude > 90) {
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$overflow = abs($maximum_latitude - 90);
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$between_a = [90, $minimum_latitude];
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sort($between_a);
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$between_b = [-90, (-90 + $overflow)];
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sort($between_b);
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$where[] = '(`address_latitude` between ' . $between_a[0] . ' and ' . $between_a[1] . ' or `address_latitude` between ' . $between_b[0] . ' and ' . $between_b[1] . ')';
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}
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else {
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$between_a = [$minimum_latitude, $maximum_latitude];
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sort($between_a);
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$where[] = '`address_latitude` between ' . $between_a[0] . ' and ' . $between_a[1];
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}
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// Longitude is 69mi / ° at the equator and then shrinks towards the poles.
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$degrees_longitude_delta = $radius / 69 / 2;
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$minimum_longitude = $generated_columns['address_longitude'] - $degrees_longitude_delta;
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$maximum_longitude = $generated_columns['address_longitude'] + $degrees_longitude_delta;
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if ($minimum_longitude < -180) {
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$overflow = abs($minimum_longitude + 180);
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$between_a = [-180, $maximum_longitude];
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sort($between_a);
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$between_b = [180, (180 - $overflow)];
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sort($between_b);
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$where[] = '(`address_longitude` between ' . $between_a[0] . ' and ' . $between_a[1] . ' or `address_longitude` between ' . $between_b[0] . ' and ' . $between_b[1] . ')';
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}
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else if ($maximum_longitude > 180) {
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$overflow = abs($maximum_longitude - 180);
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$between_a = [180, $minimum_longitude];
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sort($between_a);
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$between_b = [-180, (-180 + $overflow)];
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sort($between_b);
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$where[] = '(`address_longitude` between ' . $between_a[0] . ' and ' . $between_a[1] . ' or `address_longitude` between ' . $between_b[0] . ' and ' . $between_b[1] . ')';
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}
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else {
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$between_a = [$minimum_longitude, $maximum_longitude];
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sort($between_a);
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$where[] = '`address_longitude` between ' . $between_a[0] . ' and ' . $between_a[1];
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}
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}
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} else {
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// Fill these in for query performance.
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$where[] = '`address_longitude` between -180 and 180';
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$where[] = '`address_latitude` between -90 and 90';
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}
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// Should match their position in the thermostat profile exactly.
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$metric_codes = [
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'property' => [
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'age',
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'square_feet'
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],
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'runtime_per_degree_day' => [
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'heat_1',
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'heat_2',
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'cool_1',
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'cool_2'
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],
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'setpoint' => [
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'heat',
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'cool'
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],
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'setback' => [
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'heat',
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'cool'
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],
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'balance_point' => [
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'heat_1',
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'heat_2',
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'resist'
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]
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];
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// Set all of the metric intervals. If Celsius add a bit of precision.
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$intervals = [];
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$intervals['property'] = [
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'age' => 1,
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'square_feet' => 500
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];
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$intervals['runtime_per_degree_day'] = [
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'heat_1' => 1,
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'heat_2' => 1,
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'cool_1' => 1,
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'cool_2' => 1
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];
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$intervals['setpoint'] = [
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'heat' => 0.5,
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'cool' => 0.5
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];
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if($thermostat['temperature_unit'] === '°F') {
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$intervals['setback'] = [
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'heat' => 1,
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'cool' => 1
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];
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$intervals['balance_point'] = [
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'heat_1' => 1,
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'heat_2' => 1,
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'resist' => 1
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];
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} else {
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$intervals['setback'] = [
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'heat' => 0.5,
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'cool' => 0.5
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];
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$intervals['balance_point'] = [
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'heat_1' => 0.5,
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'heat_2' => 0.5,
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'resist' => 0.5
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];
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}
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$get_metric_template = function() {
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return [
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'values' => [],
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'histogram' => [],
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'standard_deviation' => null,
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'median' => null,
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'precision' => null
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];
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};
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$metrics = [];
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foreach($metric_codes as $parent_metric_name => $parent_metric) {
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$metrics[$parent_metric_name] = [];
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foreach($parent_metric as $child_metric_name) {
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$metrics[$parent_metric_name][$child_metric_name] = $get_metric_template();
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$metrics[$parent_metric_name][$child_metric_name]['interval'] = $intervals[$parent_metric_name][$child_metric_name];
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}
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}
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$memory_limit = 16; // mb
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$memory_per_thermostat = 0.0054; // mb
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$limit_start = 0;
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$limit_count = round($memory_limit / $memory_per_thermostat);
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/**
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* Selecting lots of rows can eventually run PHP out of memory, so chunk
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* this up into several queries to avoid that.
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*/
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do {
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$result = $this->database->query('
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select
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thermostat_id,
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profile
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from
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thermostat
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where ' .
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implode(' and ', $where) . '
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limit ' . $limit_start . ',' . $limit_count . '
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');
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// Get all the scores from the other thermostats
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while($other_thermostat = $result->fetch_assoc()) {
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$other_thermostat['profile'] = json_decode($other_thermostat['profile'], true);
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// Only use profiles with at least a year of data
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// Only use profiles generated in the past year
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if(
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$other_thermostat['profile']['metadata']['duration'] >= 365 &&
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|
strtotime($other_thermostat['profile']['metadata']['generated_at']) > strtotime('-1 year') &&
|
|
$other_thermostat['thermostat_id'] !== $thermostat_id
|
|
) {
|
|
foreach($metric_codes as $parent_metric_name => $parent_metric) {
|
|
foreach($parent_metric as $child_metric_name) {
|
|
if(
|
|
isset($thermostat['profile'][$parent_metric_name]) === true &&
|
|
isset($thermostat['profile'][$parent_metric_name][$child_metric_name]) === true &&
|
|
$thermostat['profile'][$parent_metric_name][$child_metric_name] !== null &&
|
|
isset($other_thermostat['profile'][$parent_metric_name]) === true &&
|
|
isset($other_thermostat['profile'][$parent_metric_name][$child_metric_name]) === true &&
|
|
$other_thermostat['profile'][$parent_metric_name][$child_metric_name] !== null
|
|
) {
|
|
$interval = $intervals[$parent_metric_name][$child_metric_name];
|
|
$data = round($other_thermostat['profile'][$parent_metric_name][$child_metric_name] / $interval) * $interval;
|
|
|
|
$precision = strlen(substr(strrchr($interval, "."), 1));
|
|
$data = number_format($data, $precision, '.', '');
|
|
|
|
$metrics[$parent_metric_name][$child_metric_name]['values'][] = $data;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$limit_start += $limit_count;
|
|
} while ($result->num_rows === $limit_count);
|
|
|
|
// Cleanup. Set the standard deviation, median, and remove the temporary
|
|
// values and any metrics that have no data.
|
|
foreach($metric_codes as $parent_metric_name => $parent_metric) {
|
|
foreach($parent_metric as $child_metric_name) {
|
|
$data = $this->remove_outliers($metrics[$parent_metric_name][$child_metric_name]['values']);
|
|
if(count($data['values']) > 0) {
|
|
$metrics[$parent_metric_name][$child_metric_name]['histogram'] = $data['histogram'];
|
|
$metrics[$parent_metric_name][$child_metric_name]['standard_deviation'] = array_standard_deviation($data['values']);
|
|
$metrics[$parent_metric_name][$child_metric_name]['median'] = floatval(array_median($data['values']));
|
|
unset($metrics[$parent_metric_name][$child_metric_name]['values']);
|
|
} else {
|
|
$metrics[$parent_metric_name][$child_metric_name] = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
return $metrics;
|
|
}
|
|
|
|
/**
|
|
* Remove outliers more than 2 standard deviations away from the mean. This
|
|
* is an effective way to keep the scales meaningul for normal data.
|
|
*
|
|
* @param array $array Input array
|
|
*
|
|
* @return array Input array minus outliers.
|
|
*/
|
|
private function remove_outliers($array) {
|
|
$mean = array_mean($array);
|
|
$standard_deviation = array_standard_deviation($array);
|
|
|
|
$min = $mean - ($standard_deviation * 2);
|
|
$max = $mean + ($standard_deviation * 2);
|
|
|
|
$values = [];
|
|
$histogram = [];
|
|
foreach($array as $value) {
|
|
if($value >= $min && $value <= $max) {
|
|
$values[] = $value;
|
|
|
|
$value_string = strval($value);
|
|
if(isset($histogram[$value_string]) === false) {
|
|
$histogram[$value_string] = 0;
|
|
}
|
|
$histogram[$value_string]++;
|
|
}
|
|
}
|
|
|
|
return [
|
|
'values' => $values,
|
|
'histogram' => $histogram
|
|
];
|
|
}
|
|
}
|