<?php
header("Content-Type: multipart/form-data");
header("Access-Control-Allow-Origin: *");
        
require_once PD . "/Model/ImageModel.php";

/**
 * Description of ImageController
 *
 * @author Mike Howard
 */
class ImageController extends BaseController {
    
    public $imageModel;
    public $action;
    private $imagePayload;
    
    function __construct() {
        parent::__construct();
        $this->basename = "ImageController";
    }
    
    /*
     * http://localhost/CustomerRewardsRESTAPI/index.php/image/process/upload
     */
    public function processAction() {
        $this->strErrorDesc = '';
        $this->strErrorHeader = '';
        try {
            $this->requestMethod = $this->getServerRequestMethod();
            $this->imageModel = new ImageModel();
            
            switch($this->action) {
                case "upload":
                    $response = $this->uploadImage();
                break;

                case "update":
                        $response = $this->updateImage();
                break;

                case "delete":
                        $response = $this->deleteImage();
                break;
            
                default:
                        $response = (object) ['Result' => 'Default'];
                        $this->strErrorDesc = 'Controller Method not supported for processAction: ' . $this->action;
                        $this->strErrorHeader = 'HTTP/1.1 422 Unprocessable Entity';
                break;
            }
        
            $responseData = json_encode($response);
        } catch (Error $e) {
            $this->strErrorDesc = $e->getMessage().' Something went wrong in processAction! Please contact support.';
            $this->strErrorHeader = 'HTTP/1.1 500 Internal Server Error';
        }
        
        // send output 
        if (!$this->strErrorDesc) {
            $this->sendOutput(
                $responseData,
                array('Content-Type: application/json', 'HTTP/1.1 200 OK')
            );
        } else {
            $this->sendOutput(json_encode(array('error' => $this->strErrorDesc)), 
                array('Content-Type: application/json', $this->strErrorHeader)
            );
        }
    }
    
    /* Upload the image and store on server as file */
    private function uploadImage(){
        if ($this->checkRequestType('POST') == 'false') {
            return $this->unprocessableRequestResponse();
        }
        
        // reads the raw POST data and returns it as a string. 
        $jsonPayload = file_get_contents('php://input');
	$input = json_decode($jsonPayload, TRUE);
        
        //get the member data
        $this->memberId = $input['CustomerID'];
        $this->imageBlob = $input['ImageBlob'];
        
        //get the file data
        $this->imagePayload = $_FILES['image'];
        
        $this->imageModel->fileName = $this->imagePayload['name'];
        if(empty($this->imageModel->fileName)){
            return $this->notFoundResponse();
        }
        
        $this->imageModel->tempPath = $this->imagePayload['tmp_name'];
        $this->imageModel->basename = basename($this->imageModel->fileName);
        $this->imageModel->originalPath = $this->imageModel->uploadTo.$this->imageModel->basename; 
        $this->imageModel->fileType = pathinfo($this->imageModel->originalPath, PATHINFO_EXTENSION);
        
        if (! $this->validateImage()) {
            return $this->unprocessableEntityResponse();
        }
        
        if (! $this->handleImage()) {
            return $this->notFoundResponse();
        }

        $this->imageModel->insertImage();
        return $response;
    }
    
    private function handleImage() {
        $moved = false;
        if(move_uploaded_file($this->imageModel->tempPath, $this->imageModel->uploadTo . $this->imageModel->fileName)) {
            $moved = true;
        }
        return $moved;
    }
    
    private function validateImage(){
        $validtion = false;
        if(in_array($this->imageModel->fileType, $this->imageModel->allowFileType)){
            $validtion = true;
        }
        return $validtion;
    }
}