Dashboard controller for a CodeIgniter Google Ads related project

Dashboard.php

<?php
defined('BASEPATH') or exit('No direct script access allowed');

class Dashboard extends CI_Controller
{
	public function __construct()
	{
		parent::__construct();
	}

	static function date_compare($a, $b)
	{
		$t1 = strtotime($a['date']);
		$t2 = strtotime($b['date']);
		return $t1 - $t2;
	}

	public function index()
	{
		if ($this->User_model->verifyUser()) {
			if (@$_POST['date_range']) {
				if (strpos($_POST['date_range'], ' to ') !== false) {
					$start_date = explode(' to ', $_POST['date_range'])[0];
					$end_date = explode(' to ', $_POST['date_range'])[1];
				} else {
					$start_date = $end_date = $_POST['date_range'];
				}
				$start_date = DateTime::createFromFormat('m-d-Y', $start_date)->format('Y-m-d');
				$end_date = DateTime::createFromFormat('m-d-Y', $end_date)->format('Y-m-d');
			} else {
				$start_date = date('Y-m-d', strtotime('-7 days'));
				$end_date = date('Y-m-d', strtotime('-1 days'));
				$_POST['by_adunit_date'] = 'Date';
			}
			if($start_date < '2023-06-27') {
				$admanager_by_date1 = $this->AdManager_model->get($_SESSION['user_id'], $start_date, '2023-06-26', 'Date');
				$admanager_by_date2 = $this->AdManager_model->get($_SESSION['user_id'], '2023-06-27', $end_date, 'Date');
				$admanager_by_date = array_merge($admanager_by_date1, $admanager_by_date2);
			} else {
				$admanager_by_date = $this->AdManager_model->get($_SESSION['user_id'], $start_date, $end_date, 'Date');
			}
			$primis_by_date = $this->Primis_model->get($_SESSION['user_id'], $start_date, $end_date, 'Date');

			// append primis records to admanager records
			$records = $admanager_by_date;
			foreach ($primis_by_date as $p) {

				$index = array_search($p['date'], array_column($records, 'date'));

				if ($index !== false) {
					$records[$index]['impressions'] += $p['impressions'];
					$records[$index]['revenue'] += $p['revenue'];
					$records[$index]['ecpm'] = round($records[$index]['revenue'] / $records[$index]['impressions'] * 1000, 2);
				} else {
					$records[] = $p;
				}
			}
			usort($records, 'self::date_compare');
			$data['records']['date'] = $records;

			$admanager_by_adunit = $this->AdManager_model->get($_SESSION['user_id'], $start_date, $end_date, 'Ad Units');
			$primis_by_adunit = $this->Primis_model->get($_SESSION['user_id'], $start_date, $end_date, 'Ad Units');
			$data['records']['ad_unit'] = array_merge($admanager_by_adunit, $primis_by_adunit);
			
			// ad-level
			$admanager_adlevel = $this->AdManager_model->get($_SESSION['user_id'], $start_date, $end_date, 'Ad Units', true);
			$primis_adlevel = $this->Primis_model->get($_SESSION['user_id'], $start_date, $end_date, 'Ad Units', true);
			$data['records_adlevel'] = array_merge($admanager_adlevel, $primis_adlevel);

			// last 30 days record
			$start_date = date('Y-m-d', strtotime('-30 days'));
			$end_date = date('Y-m-d', strtotime('now'));

			// TODO: remove this temporary fix
			if($start_date < '2023-06-27') {
				$admanager_last_30_partial1 = $this->AdManager_model->get($_SESSION['user_id'], $start_date, '2023-06-26', 'Date', false, true);
				$admanager_last_30_partial2 = $this->AdManager_model->get($_SESSION['user_id'], '2023-06-27', $end_date, 'Date', false, true);
				$admanager_last_30 = array_merge($admanager_last_30_partial1, $admanager_last_30_partial2);
			} 
			else{
				$admanager_last_30 = $this->AdManager_model->get($_SESSION['user_id'], $start_date, $end_date, 'Date', false, true);
			}
			$primis_last_30 = $this->Primis_model->get($_SESSION['user_id'], $start_date, $end_date, 'Date');
			$records_last_30 = $admanager_last_30;

			foreach ($primis_last_30 as $p) {

				$index = array_search($p['date'], array_column($records_last_30, 'date'));

				if ($index !== false) {
					$records_last_30[$index]['impressions'] += $p['impressions'];
					$records_last_30[$index]['revenue'] += $p['revenue'];
					$records_last_30[$index]['ecpm'] += $p['ecpm'];
				} else {
					$records_last_30[] = $p;
				}
			}
			usort($records_last_30, 'self::date_compare');
			$data['records_last_30'] = $records_last_30;

			$domains = $this->Domain_model->getDomains($_SESSION['user_id']);
			$domains = array_map(function ($item) {
				return $item['domain'];
			}, $domains);
			$data['domains'] = implode(", ", $domains);

			$data['content'] = $this->load->view('adstats', $data, true);
			$this->load->view('layout', $data);
		}
	}

	public function dailymail($username, $download = false)
	{

		$start_date = date('Y-m-d', strtotime('-30 days'));
		//$start_date = date('Y-m-d', strtotime('2019-01-01'));
		$end_date = date('Y-m-d', strtotime('now'));

		// 51 for empower
		switch ($username) {
			case 'empower':
				$user_id = 51;
				break;
			case 'hellenic':
				$user_id = 71;
				break;
		}
		$admanager = $this->AdManager_model->get($user_id, $start_date, $end_date, 'Date');
		$primis = $this->Primis_model->get($user_id, $start_date, $end_date, 'Date');

		$records = $admanager;

		foreach ($primis as $p) {

			$index = array_search($p['date'], array_column($records, 'date'));

			if ($index !== false) {
				$records[$index]['impressions'] += $p['impressions'];
				$records[$index]['revenue'] += $p['revenue'];
				$records[$index]['ecpm'] = round($records[$index]['revenue'] / $records[$index]['impressions'] * 1000, 2);
			} else {
				$records[] = $p;
			}
		}
		$data['records_date'] = $records;

		foreach ($data['records_date'] as $i => &$row) {
			$admanager = $this->AdManager_model->get($user_id, $row['date'], $row['date'], 'Ad Unit');
			$primis = $this->Primis_model->get($user_id, $row['date'], $row['date'], 'Ad Unit');
			$row['adunits'] = array_merge($admanager, $primis);
		}

		$data['username'] = ucfirst($username);
		$content = $this->load->view('daily_email', $data, true);

		//echo $content;

		if ($download) {
			header('Content-Type: application/csv');
			header('Content-Disposition: attachment; filename="' . $username . '.csv' . '";');
			$attachment = $this->_createCsvString($data);
			echo $attachment;
		} else {
			echo $this->sendCsvEmail($data, $content, $username);
		}
	}

	private function _createCsvString($data)
	{

		// Open temp file pointer
		if (!$fp = fopen('php://temp', 'w+')) return FALSE;

		// Loop data and write to file pointer
		fputcsv($fp, ['Ad ID', 'Ad Name', 'Impressions', 'Clicks', 'CTR', 'Viewability', 'CPM', 'Revenue']);

		foreach ($data['records_date'] as $row) {
			fputcsv($fp, [$row['date'], '', $row['impressions'], '', '', '', $row['ecpm'], $row['revenue']]);
			foreach ($row['adunits'] as $adunit_row) {
				$ctr = number_format($adunit_row['clicks'] / $adunit_row['impressions'] * 100, 2) . '%';
				$adunit_row['num_viewability'] = $adunit_row['num_viewability'] == 0 ? 1 : $adunit_row['num_viewability'];
                $viewability = number_format($adunit_row['total_av_viewable_impressions'] / $adunit_row['num_viewability'], 2) . '%';
				
				fputcsv($fp, [$adunit_row['adunit_id'], $adunit_row['adunit_name'], $adunit_row['impressions'], $adunit_row['clicks'], $ctr, $viewability, $adunit_row['ecpm'], $adunit_row['revenue']]);
			}
		}

		fputcsv($fp, [
			'',
			'Total:',
			array_sum(array_column($data['records_date'], 'impressions')),
			'',
			'',
			'',
			'',
			array_sum(array_column($data['records_date'], 'revenue')),
		]);

		// Place stream pointer at beginning
		rewind($fp);

		// Return the data
		return stream_get_contents($fp);
	}

	function sendCsvEmail($csvData, $body, $username, $to = 'george@blabla.com', $from = 'theEngine <support@blabla.com>')
	{
		// This will provide plenty adequate entropy
		$multipartSep = '-----' . md5(time()) . '-----';

		// Arrays are much more readable
		$headers = array(
			"From: $from",
			"Content-Type: multipart/mixed; boundary=\"$multipartSep\""
		);

		// Make the attachment
		$attachment = chunk_split(base64_encode($this->_createCsvString($csvData)));
		$subject = 'Last 30 dayAd Stats for ' . ucfirst($username);

		// Make the body of the message
		$body = "--$multipartSep\r\n"
			. "Content-Type: text/html;\r\n"
			. "\r\n"
			. "$body\r\n"
			. "--$multipartSep\r\n"
			. "Content-Type: text/csv\r\n"
			. "Content-Transfer-Encoding: base64\r\n"
			. "Content-Disposition: attachment; filename=\"empower.csv\"\r\n"
			. "\r\n"
			. "$attachment\r\n"
			. "--$multipartSep--";

		// Send the email, return the result
		return @mail($to, $subject, $body, implode("\r\n", $headers));
	}


	public function test()
	{
		//var_dump(preg_match('/instream$/', 'lovefraud_instream_1'));
	}
}