<?php

header("Content-Type: image/png");
date_default_timezone_set('America/Toronto');
include "../../data/config.php";

function get_requests($slug){
	
	$time = time();
	$requests = [];
	
	for($i=0; $i<73; $i++){
		
		$data = apcu_fetch(intdiv($time - (3600 * $i), 3600) . ".$slug");
		
		$requests[] = [$i, ($data === false ? 0 : $data)];
	}
	
	// rtrim() out all entries that are 0
	$out = [];
	$found = false;
	for($i=count($requests) - 1; $i>=0; $i--){
		
		if($requests[$i][1] !== 0){
			
			$found = $i;
			break;
		}
	}
	
	if($found === false){
		
		return [];
	}
	
	$requests = array_slice($requests, 0, $found + 1);
	
	return $requests;
}

$bot_requests = get_requests("bot_requests");
$real_requests = get_requests("real_requests");

$real_reqs_8h =
	array_sum(
		array_column(
			array_slice(
				$real_requests,
				0,
				8
			),
			1
		)
	);

$real_reqs_24h =
	array_sum(
		array_column(
			array_slice(
				$real_requests,
				0,
				24
			),
			1
		)
	);

$real_reqs_72h =
	array_sum(
		array_column(
			$real_requests,
			1
		)
	);

include "../../lib/graph_gen.php";
$graph = new graph();

$c = count($real_requests);

if($c > 25){
	
	$c = 25;
}elseif($c <= 2){
	
	$c = 2;
}

echo $graph->render([
	"title" => "Number of requests within the last 72 hours (non-cummulative)",
	"subtitle" => date("jS M y @ g:ia", time()) . " || 8h=" . number_format($real_reqs_8h) . " - 24h=" . number_format($real_reqs_24h) . " - 72h=" . number_format($real_reqs_72h) . " || " . config::SERVER_NAME,
	"x_label" => "<= Hours passed =>",
	"y_label" => "<= Request count/hour =>",
	"grad_x" => $c,
	"grad_y" => 20,
	"data" => [
		"Bot requests" => $bot_requests,
		"Real requests" => $real_requests,
	]
]);