<?php

class faceapi
{
	public static function toMakeFaceBoundingBox($bounding_box, $path, $file_name, $key,$apcntid)
	{
		// ($image_name,$BoundingBox,$destination_path,$extension){

		log_message('ERROR', "In faceapi helper @6 to Make FaceBoundingBox", $path, $file_name);
		$file_path = $path . $file_name;
		// $red = imagecolorallocate($img, 255, 0, 0);
		// $black = imagecolorallocate($img, 0, 0, 0);
		// $white = imagecolorallocate($img, 255, 255, 255);

		list($imagewidth, $imageheight) = getimagesize($file_path);
		log_message('ERROR', 'In faceapi helper @25 to Make FaceBoundingBox  image_width' . $imagewidth . 'image_height' . $imageheight);

		if (count($bounding_box) > 0) {
			$response = array();
			$CmpBoundingBox = $bounding_box['compare_image'];
			$file_path = $path . $file_name;
			$info = getimagesize($file_path);
			$extension = image_type_to_extension($info[2]);
			$SrcBoundingBox = $bounding_box['source_image'];
			if (count($CmpBoundingBox) > 0 && ($key == 'selfie_with_person_met')) {
				$destination_path = $path . 'face_api_image_'.$apcntid . $extension;
				if (!copy($file_path, $destination_path)) {
					log_message('ERROR', 'failed to copy');
				}
				$img = imagecreatefrompng($destination_path);

				for ($i = 0; $i < count($CmpBoundingBox); $i++) {

					$Left_coordinate = ($CmpBoundingBox[$i]['Left'] * $imagewidth);
					$Top_coordinate = ($CmpBoundingBox[$i]['Top']  * $imageheight);
					$Face_width = ($CmpBoundingBox[$i]['Width']  * $imagewidth);
					$Face_height = ($CmpBoundingBox[$i]['Height']  * $imageheight);
					$Similarity = $CmpBoundingBox[$i]['Similarity'];

					$x1 = $Left_coordinate;
					$y1 = $Top_coordinate;

					$data = self::imgCrop($x1, $y1, $Face_width, $Face_height, $Similarity, $img, $destination_path, $i,$apcntid);
					self::DrawLine($x1, $y1, $Face_width, $Face_height, $Similarity, $img, $destination_path,$apcntid);
					array_push($response,$data);						
					
				}
				$d['compare_image'] = $response;
				return $d;
			} else {
				$destination_path = $path . 'src_image_'.$apcntid . $extension;
				if (!copy($file_path, $destination_path)) {
					log_message('ERROR', 'failed to copy');
				}
				$img = imagecreatefrompng($destination_path);

				$Left_coordinate = ($SrcBoundingBox['Left'] * $imagewidth);
				$Top_coordinate = ($SrcBoundingBox['Top']  * $imageheight);
				$Face_width = ($SrcBoundingBox['Width']  * $imagewidth);
				$Face_height = ($SrcBoundingBox['Height']  * $imageheight);
				$Similarity = 0;

				$x1 = $Left_coordinate;
				$y1 = $Top_coordinate;
				$i = null;
				// self::imgCrop($x1,$y1,$Face_width,$Face_height,$path,$file_name,$i);
				$data = self::imgCrop($x1, $y1, $Face_width, $Face_height, $Similarity, $img, $destination_path, $i,$apcntid);
				unlink($destination_path);
				$response['source_image'] = $data;						
				return $response;
			}
		}
	}

	public static function DrawLine($x1, $y1, $Face_width, $Face_height, $Similarity, $img, $destination_path)
	{
		// log_message('ERROR', 'In faceapi helper @45  Draw Line x1 : ' . $x1 . ' y1 : ' . $y1 . ' Face_width : ' . $Face_width . ' Face_height : ' . $Face_height . ' Similarity : ' . $Similarity . ' img : ' . $img . ' destination_path : ' . $destination_path);
		$Similarity_split = explode(".", $Similarity);
		$Similarity_value = $Similarity_split[0];
		list($imagewidth, $imageheight) = getimagesize($destination_path);
		if ($Similarity_value > 80) { // above 81 green
			$color = imagecolorallocate($img, 0, 153, 0);
		} else if ($Similarity_value <= 80 && $Similarity_value > 60) { // in between 61 to 80 orange
			$color = imagecolorallocate($img, 255, 165, 0);
		} else if ($Similarity_value <= 60) { // below 60  red
			$color = imagecolorallocate($img, 255, 0, 0);
		}
		$white = imagecolorallocate($img, 255, 255, 255);
		// log_message('ERROR', 'In faceapi helper @45  Draw Line color : ' . $color);
		$Similarity = $Similarity_value . " %";
		//TOP LINe
		$t_x1 = $x1;
		$t_y1 = $y1;
		$t_x2 = ($x1 + $Face_width);
		$t_y2 = $y1;

		//bottom line
		$b_x1 = $x1;
		$b_y1 = ($y1 + $Face_height);
		$b_x2 = ($x1 + $Face_width);
		$b_y2 = ($y1 + $Face_height);

		$imgl = self::imagelinethick($img, $t_x1, $t_y1, $t_x2, $t_y2, $color, 7); //top line
		$imgl = self::imagelinethick($img, $b_x1, $b_y1, $b_x2, $b_y2, $color, 7); //bottom line
		$imgl = self::imagelinethick($img, $t_x1, $t_y1, $b_x1, $b_y1, $color, 7); //left line
		$imgl = self::imagelinethick($img, $t_x2, $t_y2, $b_x2, $b_y2, $color, 7); //right line
		//  apppath / doc la roboto.tff
		$font = APPPATH . "docs/roboto.ttf";
		// imagettftext($img, 20, 0, ($t_x1), ($t_y1-5), $color,$font, $Similarity);
		//  imagepng($img, $destination_path); 
		//  imagepng($img, "face4.png");
		// imagefilledrectangle($img, $t_x1-5, $t_y1-18, $t_x1+28, $t_y1, $white);
		// imagettftext($img, 10, 10, ($t_x1), ($t_y1-5), $color,$font, $Similarity);
		imagefilledrectangle($img, $t_x1 - 5, $t_y1 - 30, $t_x1 + 60, $t_y1, $white);
		imagettftext($img, 17, 8, ($t_x1), ($t_y1 - 5), $color, $font, $Similarity);

		$get_image_format = explode(".", $destination_path);
		$image_format = $get_image_format[1];

		if ($image_format == 'png') {
			imagepng($img, $destination_path);
		} else if ($image_format == 'jpeg') {
			imagejpeg($img, $destination_path);
		} else if ($image_format == 'jpg') {
			// $destination_path = $get_image_format[0].".jpeg";
			imagejpg($img, $destination_path);
		}
		// $image_data = file_get_contents($destination_path);
		// $base64 = base64_encode($image_data);
		// return array('name' => $temp_image_name, 'base64' => $base64, 'Similarity' => $Similarity);
	}

	public static function imagelinethick($image, $x1, $y1, $x2, $y2, $color, $thick = 1)
	{
		/* this way it works well only for orthogonal lines
    imagesetthickness($image, $thick);
    return imageline($image, $x1, $y1, $x2, $y2, $color);
    */
		if ($thick == 1) {
			return imageline($image, $x1, $y1, $x2, $y2, $color);
		}
		$t = $thick / 2 - 0.5;
		if ($x1 == $x2 || $y1 == $y2) {
			return imagefilledrectangle($image, round(min($x1, $x2) - $t), round(min($y1, $y2) - $t), round(max($x1, $x2) + $t), round(max($y1, $y2) + $t), $color);
		}
		$k = ($y2 - $y1) / ($x2 - $x1); //y = kx + q
		$a = $t / sqrt(1 + pow($k, 2));
		$points = array(
			round($x1 - (1 + $k) * $a), round($y1 + (1 - $k) * $a),
			round($x1 - (1 - $k) * $a), round($y1 - (1 + $k) * $a),
			round($x2 + (1 + $k) * $a), round($y2 - (1 - $k) * $a),
			round($x2 + (1 - $k) * $a), round($y2 + (1 + $k) * $a),
		);
		imagefilledpolygon($image, $points, 4, $color);
		return imagepolygon($image, $points, 4, $color);
	}

	public static function imgCrop($x1, $y1, $Face_width, $Face_height, $Similarity, $img, $destination_path, $i,$apcntid)
	{
		$temp_image_name = $i === null ? "id_proof_crop_".$apcntid.".png" :  "face_crop_".$apcntid."_" . $i . ".png";
		// log_message('ERROR', 'In faceapi helper - imgCrop @126 x1 : ' . $x1 . ' y1 : ' . $y1 . ' Face_width : ' . $Face_width . ' Face_height : ' . $Face_height . ' Similarity : ' . $Similarity . ' img : ' . $img . ' destination_path : ' . $destination_path);
		$destination_path_2 = preg_replace('#/\w+(\.\w+)$#', '/' . $temp_image_name, $destination_path);
		log_message('ERROR', 'In faceapi helper - imgCrop @126 destination_path b4 : ' . $destination_path . ' destination_path after : ' . $destination_path_2);
		$to_crop_array = array('x' => $x1, 'y' => $y1, 'width' => $Face_width, 'height' => $Face_height);
		$dest = imagecrop($img, $to_crop_array);
		$get_image_format = explode(".", $destination_path);
		$image_format = $get_image_format[1];
		if ($image_format == 'png') {
			imagepng($dest, $destination_path_2);
		} else if ($image_format == 'jpeg') {
			imagejpeg($dest, $destination_path_2);
		} else if ($image_format == 'jpg') {
			imagejpg($dest, $destination_path_2);
		}
		$image_data = file_get_contents($destination_path_2);
		$base64 = base64_encode($image_data);
		unlink($destination_path_2);
		$Similarity_split = explode(".", $Similarity);
		$Similarity_value = $Similarity_split[0];
		// if($i === null){
			return array('name' => $temp_image_name, 'base64' => $base64, 'Similarity' => $Similarity_value);
		// }else{
		// 	return array($i => array('name' => $temp_image_name, 'base64' => $base64, 'Similarity' => $Similarity));
		// } 
		// return array('name' => $temp_image_name, 'base64' => $base64, 'Similarity' => $Similarity);
		// unlink($destination_path);
	}
}