const express = require('express');
const path = require('path');
const Module = require('../../base/Module');
const RepositorySystem = require('../../systems/RepositorySystem');
const RoutingSystem = require('../../systems/RoutingSystem');
const uuidv4 = require('uuid/v4');
const formidable = require('formidable');
const fs = require('fs');

let FileScheme = {
	fields: [
		{
			key: "filename",
			type: "text"
		},
		{
			key: "userId",
			type: "integer"
		},
		{
			key: "filetype",
			type: "text"
		}
	]
};


class FileModule extends Module {
	constructor(){
		super('/files', [2,0,3,4,0], 'Files');
		this.repository = RepositorySystem.create('Files', FileScheme);
		this.setRepo(this.repository);
		this.FileSystemPath = process.cwd();
		this.path = this.FileSystemPath + '/localfiles';
		this.router = express.Router();
 		this.init();

	}

	init() {
		let routes = [
			{
				type: 'custom',
				method: 'post',
				endpoint: '/files',
				customFn: (req,res) => {
					this.acceptFile(req)
		 			.then((data) => {
		 				res.send(data);
		 			})
		 			.catch((e) => {
		 				res.send(e);
		 			});
				}
			},
			{
				type:'custom',
				method: 'get',
				endpoint:'/files/:id',
				customFn: (req,res) =>{
					this.getFile(req.params)
					.then((results)=>{
						res.download(results[0],results[1]);
					})
					.catch((e)=>{
						res.send(e)
					})
				}
			}

		];

		RoutingSystem.loadRoutes(routes, this.router);
	}

	setRepo(repo) {
		this._repository = repo;
	}
	_getFolder(type){
	switch(type){
			case 'sql':
				return 'SQL';
			case 'doc' || 'docx':
				return 'Word';
			case 'xlsx' || 'xlsm' || 'xlsb':
				return 'Excel';
			case 'jpg' || 'png':
				return 'Images';
			case 'txt':
				return	'txt';
			case 'pdf':
				return 'PDF';
		}
	}
	acceptFile(req, path = this.path){
	return new Promise((resolve,reject)=>{
		try{
			var form = new formidable.IncomingForm({uploadDir:path});
			form.parse(req,(err,fields,files)=>{
				if(err){
					reject(err)
				}
				Object.keys(files).map((key,index) =>{
					let type = files[key]['name'].split(".")[1]
					let FileName = form.openedFiles[0].name
					let newPath = path  +'/'+ this._getFolder(type) +'/'+ FileName;
					fs.rename(files[key]['path'],newPath, (err) => {
						if (err) reject(err);
						let data = {
							"filename":FileName,
							"userId":null,
							"filetype":type,
						}
						this.repository.insert(data)
						.then((data)=>{
							console.log('h?')
							resolve(FileName);
						})
						.catch((e)=>{
							reject(e)
						})
						});

					});
				});

			}
			catch(e){
				reject(e);
			}
		});
	}

	getFile(filename){
		return new Promise((resolve,reject)=>{
			this.repository.get('filename',filename)
			.then((data)=>{
				let path = this.path + '/' + data[0].filetype.toUpperCase() +'/'+data[0].filename;
				let results = [ path,data[0].filename];
				resolve(results);
			})
		})
		.catch((e)=> reject(e))
	}


}

module.exports = FileModule;