<?php
/**
 * app/plugins/fileshare/models/upload.php
 *
 * This class is used for the manipulation of the uploads database table.
 *
 * @package TP FileShare
 * @version 3.0
 * @author  Joey Kimsey <Joey@thetempusproject.com>
 * @link    https://TheTempusProject.com
 * @license https://opensource.org/licenses/MIT [MIT LICENSE]
 */
namespace TheTempusProject\Models;

use TheTempusProject\Bedrock\Classes\Config;
use TheTempusProject\Bedrock\Functions\Check;
use TheTempusProject\Canary\Bin\Canary as Debug;
use TheTempusProject\Classes\DatabaseModel;
use TheTempusProject\TheTempusProject as App;
use TheTempusProject\Bedrock\Classes\CustomException;

class Upload extends DatabaseModel {
    public $tableName = 'uploads';
    public $databaseMatrix = [
        [ 'name', 'varchar', '256' ],
        [ 'location', 'text', '64' ],
        [ 'size', 'int', '20' ],
        [ 'file_type', 'varchar', '64' ],
        [ 'createdBy', 'int', '11' ],
        [ 'createdAt', 'int', '11' ],
    ];

    /**
     * The model constructor.
     */
    public function __construct() {
        parent::__construct();
    }

    public function create( $name, $location ) {
        $info = $this->getFileInfo( $location );
        $size = $info['size'];
        $file_type = $info['file_type'];
        $fields = [
            'name' => $name,
            'location' => '/' . $location,
            'size' => $size,
            'file_type' => $file_type,
            'createdAt' => time(),
            'createdBy' => App::$activeUser->ID,
        ];
        if ( ! self::$db->insert( $this->tableName, $fields ) ) {
            Debug::info( 'Uploads::create - failed to insert to db' );
            return false;
        }
        return self::$db->lastId();
    }

    public function update( $id, $name, $location = '' ) {
        $fields = [
            'name' => $name,
        ];
        if ( ! empty( $location ) ) {
            $info = $this->getFileInfo( $location );
            $fields['location'] = $location;
            $fields['size'] = $info['size'];
            $fields['file_type'] = $info['file_type'];
        }
        if ( ! self::$db->update( $this->tableName, $id, $fields ) ) {
            new CustomException( 'UploadsUpdate' );
            Debug::error( "Uploads: $id not updated: $fields" );
            return false;
        }
        return true;
    }

    public function simple() {
        $uploads = self::$db->get( $this->tableName, '*' );
        if ( !$uploads->count() ) {
            Debug::warn( 'Could not find any uploads' );
            return false;
        }
        
        $uploads = $uploads->results();
        $out = [];
        foreach ( $uploads as $upload ) {
            $out[ $upload->name ] = $upload->location;
        }
        return $out;
    }

    // public function processFileUpload() {

    // }
    
    public function getByUser( $limit = 0 ) {
        $whereClause = [
            'createdBy', '=', App::$activeUser->ID,
        ];
        if ( empty( $limit ) ) {
            $uploads = self::$db->get( $this->tableName, $whereClause );
        } else {
            $uploads = self::$db->get( $this->tableName, $whereClause, 'ID', 'DESC', [0, $limit] );
        }
        if ( ! $uploads->count() ) {
            Debug::info( 'No Uploads found.' );
            return false;
        }
        return $this->filter( $uploads->results() );
    }

    public function delete( $idArray ) {
        if ( !is_array( $idArray ) ) {
            $idArray = [ $idArray ];
        }

        foreach ( $idArray as $id ) {
            $upload = self::findById( $id );
            if ( $upload ) {
                $fileLocation = APP_ROOT_DIRECTORY . ltrim( $upload->location, '/' );
                if (file_exists($fileLocation)) {
                    if (!unlink($fileLocation)) {
                        Debug::error("Failed to delete file: $fileLocation");
                        return false;
                    }
                } else {
                    Debug::warn("File does not exist: $fileLocation");
                }
            }
        }
        return parent::delete( $idArray );
    }

    private function getFileInfo( $imagePath )
    {
        $data = [];
        $fileLocation = APP_ROOT_DIRECTORY . ltrim( $imagePath, '/' );
        if ( file_exists( $fileLocation ) ) {
            $fileInfo = finfo_open(FILEINFO_MIME_TYPE);
            $mimeType = finfo_file($fileInfo, $fileLocation);
            finfo_close($fileInfo);

            $fileSize = filesize($fileLocation);

            $data['file_type'] = $mimeType;
            $data['size'] = $fileSize;
            $data['path'] = $fileLocation;
        } else {
            Debug::warn("File does not exist: $fileLocation");
        }
        return $data;
    }
    
    public function filter( $data, $params = [] ) {
        foreach ( $data as $instance ) {
            if ( !is_object( $instance ) ) {
                $instance = $data;
                $end = true;
            }
            if (isset($instance->size)) {
                $instance->readableSize = $this->formatSize($instance->size);
            }
            $out[] = $instance;
            if ( !empty( $end ) ) {
                $out = $out[0];
                break;
            }
        }
        return $out;
    }

    public function formatSize($size) {
        $units = ['B', 'KB', 'MB', 'GB', 'TB'];
        $i = 0;
        while ($size >= 1024 && $i < count($units) - 1) {
            $size /= 1024;
            $i++;
        }
        return round($size, 2) . ' ' . $units[$i];
    }
}