<?php
class AttachmentsController extends AppController {

	var $name = 'Attachments';
	var $helpers = array('Html', 'Form','Number','Time');


	var $paginate = array(

		'limit' => 500,
		'order' => array(
			array('Principle.short_name' => 'asc'),
			array('Attachment.name' => 'asc')
		),
		'conditions' => array('Attachment.archived' => 0)
	);


	function index() {
		$this->Attachment->recursive = 1;
		$this->set('attachments', $this->paginate());
	}

	function view($id = null) {
		if (!$id) {
			$this->Session->setFlash(__('Invalid Attachment.', true));
			$this->redirect(array('action'=>'index'));
		}
		$this->set('attachment', $this->Attachment->read(null, $id));
		$this->layout = 'pdf';
	}

	function archived() {
		$this->set('archived', $this->Attachment->find('all', array('conditions'=> array('archived' => 1), 'order' => array(
			array('Principle.short_name' => 'asc'),
			array('Attachment.name' => 'asc')
		))));
	}

	function add() {
		if (!empty($this->data)) {
			
			// Check if file was uploaded
			if (empty($this->data['Attachment']['file']['tmp_name'])) {
				$error = 'No file uploaded';
				if (isset($this->data['Attachment']['file']['error'])) {
					$errorCodes = array(
						UPLOAD_ERR_INI_SIZE => 'File exceeds upload_max_filesize',
						UPLOAD_ERR_FORM_SIZE => 'File exceeds MAX_FILE_SIZE',
						UPLOAD_ERR_PARTIAL => 'File only partially uploaded',
						UPLOAD_ERR_NO_FILE => 'No file was uploaded',
						UPLOAD_ERR_NO_TMP_DIR => 'Missing temporary folder',
						UPLOAD_ERR_CANT_WRITE => 'Failed to write file to disk',
						UPLOAD_ERR_EXTENSION => 'File upload stopped by extension',
					);
					$errorCode = $this->data['Attachment']['file']['error'];
					$error = isset($errorCodes[$errorCode]) ? $errorCodes[$errorCode] : 'Unknown error: ' . $errorCode;
				}
				$this->Session->setFlash(__('File upload error: ' . $error, true));
				$principles = $this->Attachment->Principle->find('list');
				$this->set(compact('products', 'principles'));
				return;
			}

			// Proxy the upload request to the Go application
			$goHost = getenv('GO_APP_HOST');
			$goUrl = 'http://' . $goHost . '/go/attachments/upload';
			
			// Prepare the multipart form data for the Go app
			$postFields = array();
			
			$postFields['file'] = new CURLFile(
				$this->data['Attachment']['file']['tmp_name'],
				$this->data['Attachment']['file']['type'],
				$this->data['Attachment']['file']['name']
			);
			
			if (!empty($this->data['Attachment']['name'])) {
				$postFields['name'] = $this->data['Attachment']['name'];
			}
			
			if (!empty($this->data['Attachment']['description'])) {
				$postFields['description'] = $this->data['Attachment']['description'];
			}
			
			if (!empty($this->data['Attachment']['principle_id'])) {
				$postFields['principle_id'] = $this->data['Attachment']['principle_id'];
			}
			
			// Make the request to Go app
			$ch = curl_init();
			curl_setopt($ch, CURLOPT_URL, $goUrl);
			curl_setopt($ch, CURLOPT_POST, 1);
			curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
			curl_setopt($ch, CURLOPT_HTTPHEADER, array(
				'Accept: application/json'
			));
			
			$response = curl_exec($ch);
			$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
			$curlError = curl_error($ch);
			curl_close($ch);
			
			if ($httpCode == 201) {
				$this->Session->setFlash(__('The Attachment has been saved', true));
				$this->redirect(array('action'=>'index'));
			} else {
				$errorMsg = 'The Attachment could not be saved.';
				if ($curlError) {
					$errorMsg .= ' cURL Error: ' . $curlError;
				} elseif ($response) {
					$errorMsg .= ' Response: ' . $response;
				} else {
					$errorMsg .= ' HTTP Code: ' . $httpCode;
				}
				error_log('Attachment upload failed: ' . $errorMsg);
				$this->Session->setFlash(__($errorMsg, true));
			}
		}
		$principles = $this->Attachment->Principle->find('list');
		$this->set(compact('products', 'principles'));
	}

	function edit($id = null) {
		if (!$id && empty($this->data)) {
			$this->Session->setFlash(__('Invalid Attachment', true));
			$this->redirect(array('action'=>'index'));
		}
		if (!empty($this->data)) {
			$attachment = $this->data;
			$existing = $this->Attachment->find('first', array('conditions'=>array('Attachment.id' => $this->data['Attachment']['id'])));
			//Process editing the PDFs.
			if(!empty($this->data['Attachment']['file']['tmp_name'])) {

				if(!empty($existing)) {
					//Delete old file
					unlink($existing['Attachment']['file']);	

				}
				$attachment = $this->Attachment->process_attachment($this->data);

				if(!$attachment) {
					$this->Session->setFlash('The Attachment could not be saved. The filename exists');
				}	
			}
			else {
				$attachment['Attachment']['file'] = $existing['Attachment']['file'];
			}
			if ($this->Attachment->save($attachment)) {
				$this->Session->setFlash(__('The Attachment has been saved', true));
				$this->redirect(array('action'=>'index'));
			} else {
				$this->Session->setFlash(__('The Attachment could not be saved. Please, try again.', true));
			}		


		}
		else {
			$this->data = $this->Attachment->read(null, $id);
		}
		$principles = $this->Attachment->Principle->find('list');
		$this->set(compact('principles'));
	}

	function delete($id = null) {
		if (!$id) {
			$this->Session->setFlash(__('Invalid id for Attachment', true));
			$this->redirect(array('action'=>'index'));
		}
		$attachment = $this->Attachment->read(null, $id);
		if ($this->Attachment->del($id)) {
			unlink($attachment['Attachment']['file']);
			$this->Session->setFlash(__('Attachment deleted', true));
			$this->redirect(array('action'=>'index'));
		}
	}

}
?>