<?php

//FUNCÃO USADA PARA GERAR AS BARRAS DE PROGRESSO UTILIZADA NO MONITOR DO SISTEMA
//UTILIZA A BIBILIOTECA GD
function drawRating($rating) {
    $width = $_GET['width'];
    $height = $_GET['height'];
    if ($width == 0) {
        $width = 300;
    }
    if ($height == 0) {
        $height = 15;
    }
    $rating = $_GET['rating'];
    $ratingbar = (($rating / 100) * $width) - 2;
    $image = imagecreate($width, $height);
    $fill = ImageColorAllocate($image, 0, 255, 0);
    if ($rating > 49) {
        $fill = ImageColorAllocate($image, 255, 255, 0);
    }
    if ($rating > 74) {
        $fill = ImageColorAllocate($image, 255, 128, 0);
    }
    if ($rating > 89) {
        $fill = ImageColorAllocate($image, 255, 0, 0);
    }
    if ($rating > 100) {
        echo"Overload Error!";
        exit();
    }
    $back = ImageColorAllocate($image, 255, 255, 255);
    $border = ImageColorAllocate($image, 0, 0, 0);
    ImageFilledRectangle($image, 0, 0, $width - 1, $height - 1, $back);
    ImageFilledRectangle($image, 1, 1, $ratingbar, $height - 1, $fill);
    ImageRectangle($image, 0, 0, $width - 1, $height - 1, $border);
    imagePNG($image);
    imagedestroy($image);
}

Header("Content-type: image/png");
drawRating($rating);
?>