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// begin output buffer
ob_start();

// set content header
header('Content-type: application/pdf');
//error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);

// Load Dependecies
require('fpdf17/fpdf.php');

// Get form variables
$neighborhood = $_REQUEST['n'];
$measures = $_REQUEST['m'];

// Load data JSON
$string = file_get_contents("../js/metrics.json");
$json = json_decode($string, true);

// Get complete metrics fields array
$metrics = array();
foreach ($json as $value) {
array_push($metrics, $value[field]);
}

// Load neighborhood information from geojson
if (count($measures) > 0) {
$string = file_get_contents("../js/npa.json");
$npa_json = json_decode($string, true);

foreach ($npa_json["features"] as $value) {
if ( $value["properties"]["id"] = $neighborhood ) {
$npadata = $value["properties"];
}
}
}

// extend FPDF for footer
class PDF extends FPDF
{

function Footer()
{

$this->SetY(-0.4);
$this->SetFont('Arial','I',8);
$this->SetTextColor(0,0,0);
$this->Cell(0,0,'Quality of Life Dashboard - http://maps.co.mecklenburg.nc.us/qoldashboard/',0,0,'C');
}
}

// Prety up the number
function prettyData($data, $themeasure) {
global $pdf, $json, $npadata;
if (is_null($data) || !is_numeric($data)) {
return "N/A";
}
else {
if ($data >= 10000) $data = number_format($data);
return $json[$themeasure]["style"]["prefix"] . $data . $json[$themeasure]["style"]["units"];
}
}

// Create PDF
$pdf = new PDF('P','in','Letter');


/************************************************************
Cover Page
************************************************************/

$pdf->AddPage();

// title page image background
$pdf->Image('report_cover_page.png',0,0,8.5);

// White text on top of title page
$pdf->SetTextColor(255,255,255);

// Title page header
$pdf->SetFont('Arial','B',40);
$pdf->Ln(0.7);
$pdf->Cell(0.3);
$pdf->Cell(0,0, "Neighborhood Profile Area");
$pdf->SetFont('Arial','B',180);
$pdf->Ln(1.75);
$pdf->Cell(0.3);
$pdf->Cell(0, 0, $neighborhood);

// Title page main content
$pdf->Ln(3.15);
$pdf->Cell(0.43);
$pdf->SetTextColor(0,0,45);
$pdf->SetFont('Arial','B', 50);
$pdf->MultiCell(0, 0.2, "Quality of Life Study");


/************************************************************/
/* Create Map Page */
/************************************************************/
$pdf->AddPage();

// Get map extent - seriously crappy math here
$extent = file_get_contents('http://maps.co.mecklenburg.nc.us/rest/v1/ws_geo_getextent.php?srid=2264&geotable=neighborhoods&format=json&parameters=id=' . $neighborhood);
$extentJSON = json_decode($extent, true);
$ditch = array("BOX(",")", " ");
$replace = array("","", ",");
$final_extent = explode(",", str_replace($ditch, $replace,$extentJSON[rows][0][row][extent]));

$dx = $final_extent[2] - $final_extent[0];
$dy = $final_extent[3] - $final_extent[1];
if ($dx >= $dy) {
$delta = (($dx - $dy) / 2) * 1.12;
$final_extent[1] = $final_extent[1] - $delta;
$final_extent[3] = $final_extent[3] + $delta;
}
else {
$delta = (($dy - $dx) / 2) * 0.77;
$final_extent[0] = $final_extent[0] - $delta;
$final_extent[2] = $final_extent[2] + $delta;
}

$final_extent[0] = $final_extent[0] - 250;
$final_extent[1] = $final_extent[1] - 250;
$final_extent[2] = $final_extent[2] + 250;
$final_extent[3] = $final_extent[3] + 250;

// put map image (WMS) on page
$mapURL = "http://maps.co.mecklenburg.nc.us/geoserver/wms/reflect?layers=meckbase,neighborhoods&width=800&bbox=" . implode(",", $final_extent) . "&srs=EPSG:2264&CQL_FILTER=include;id=" . $neighborhood;
$pdf->Image($mapURL,0.3,0.3,7.9, 10, "PNG");

// draw border around map
$pdf->SetLineWidth(0.05);
$pdf->rect(0.3,0.3,7.9, 10);


/************************************************************
Data Report
************************************************************/


if (strlen($measures[0]) > 0) {
$measureCount = 0;
$mpp = 4; // measures per page
for ($i=0; $i < ceil(count($measures) / $mpp); $i++) {
$pdf->AddPage();

if ($measures[ $measureCount]) createMeasure(0.5, 0.5, $measures[$measureCount]);
if ($measures[$measureCount + 1]) createMeasure(4.3, 0.5, $measures[$measureCount + 1]);
if ($measures[$measureCount + 2]) createMeasure(0.5, 5.5, $measures[$measureCount + 2]);
if ($measures[$measureCount + 3]) createMeasure(4.3, 5.5, $measures[$measureCount + 3]);

$measureCount = $measureCount + $mpp;
}
}

/************************************************************
Variable Report
************************************************************/

function createMeasure($x, $y, $themeasure) {
global $pdf, $json, $npadata;

// value and title
$pdf->SetTextColor(0,0,0);
$pdf->SetY($y);
$pdf->SetX($x);
$pdf->SetFont('Arial','B',12);
$pdf->MultiCell(3.5, 0.15, prettyData($npadata[$json[$themeasure]["field"]], $themeasure) . " " . utf8_decode($json[$themeasure][title]), 0, "L");

// what it is
$pdf->Ln(0.15);
$pdf->SetX($x);
$pdf->SetFont('Arial','B',10);
$pdf->Write(0, "What is this Indicator?");
$pdf->Ln(0.1);
$pdf->SetX($x);
$pdf->SetFont('Arial','',10);
$pdf->MultiCell(3.5, 0.15, utf8_decode(strip_tags($json[$themeasure][description])), 0, "L");

// why it's important
$pdf->Ln(0.15);
$pdf->SetX($x);
$pdf->SetFont('Arial','B',10);
$pdf->Write(0, "Why is this Important?");
$pdf->Ln(0.1);
$pdf->SetX($x);
$pdf->SetFont('Arial','',10);
$pdf->MultiCell(3.5, 0.15, utf8_decode(strip_tags($json[$themeasure][importance])), 0, "L");

// about the data
$pdf->Ln(0.15);
$pdf->SetX($x);
$pdf->SetFont('Arial','B',10);
$pdf->Write(0, "About the Data");
$pdf->Ln(0.1);
$pdf->SetX($x);
$pdf->SetFont('Arial','',10);
$pdf->MultiCell(3.5, 0.15, utf8_decode(strip_tags($json[$themeasure][tech_notes])) . "\n\n". utf8_decode(strip_tags($json[$themeasure][source])), 0, "L");
}



/************************************************************
Output PDF Report
************************************************************/

$pdf->Output();

ob_end_flush();