import Book from '../../data/Book';
import * as DataEvent from '../../../src/com/events/DataEvent';
const express = require('express');
const router = express.Router();
const multer = require('multer');
const fs = require('fs-extra');
const moment = require('moment');
const jwt = require('jsonwebtoken');
const bCrypt = require('bcrypt-nodejs');
const book = new Book();
const _ = require('lodash');
const uploadPath =
	'./public/assets/images/blog/' + moment().format('YYYY') + '/' + moment().format('MM');
fs.ensureDir(uploadPath, () => {
	// dir has now been created, including the directory it is to be placed in
});
var storage = multer.diskStorage({
	destination: function(req, file, cb) {
		cb(null, uploadPath);
	},
	filename: function(req, file, cb) {
		var splice = file.originalname.split(':');
		cb(null, splice[0]);
	}
});

var feature_upload = multer({
	storage: storage
}).array('feature_image');
var post_upload = multer({
	storage: storage
}).array('post_image');

/**
 * Retrives list of Pages
 * @public
 */
router.get('/', (req, res) => {
	book.getPage().then(result => {
		res.json(result);
	});
});

/**
 * Add/Update Page
 */
router.post('/write/:task?', feature_upload, (req, res) => {
	if (req.session.user) {
		authCheck(req)
			.then(() => {
				let body = _.mapValues(req.body);
				let feature = '';
				let task = '';
				req.params.task === 'new'
					? (task = DataEvent.API_PAGE_CREATE)
					: (task = DataEvent.API_PAGE_WRITE);
				if (req.files.length > 0) {
					var path = req.files[0].path;
					feature = '/' + path.substring(7, path.length);
				} else {
					var url = body.feature_image;
					url != null || url != undefined || url != ''
						? (feature = url.substring(21, url.length))
						: (feature = '');
				}
				body.feature = feature;
				body.deleted = false;
				book.editPage(body, body.page_uuid, task, req.session.user)
					.then(result => {
						if (result.type === DataEvent.PAGE_CREATE) {
							fs.readJSON('site/settings.json').then(settings => {
								settings.library_stats.current_index = ++settings.library_stats
									.current_index;
								settings.library_stats.total_pages = ++settings.library_stats
									.total_pages;
								fs.writeJSON('site/settings.json', settings);
							});
						}
						res.json(result);
					})
					.catch(err => {
						res.json(err);
					});
			})
			.catch(err => {
				res.json(err);
			});
	}
});

/**
 * Soft deletes Page
 */

router.post('/delete', (req, res) => {
	if (req.session.user) {
		authCheck(req)
			.then(() => {
				book.editPage([], req.body.id, DataEvent.API_PAGE_DELETE, req.session.user)
					.then(result => {
						res.json(result);
					})
					.catch(err => {
						res.json(err);
					});
			})
			.catch(err => {
				res.json(err);
			});
	}
});

/**
 * Uploads image from a Page content
 */

router.post('/add-post-image', post_upload, function(req, res) {
	//console.log(req.body);
	var image = req.files[0].path;
	return res.json({
		type: DataEvent.POST_IMAGE_ADDED,
		message: 'Added Image',
		url: '/' + image.substr(7, image.length)
	});
});

module.exports = router;

function isTokenValid(token, hashedToken) {
	return bCrypt.compareSync(token, hashedToken);
}

function authCheck(req) {
	return new Promise((resolve, reject) => {
		let hash = req.headers['x-access-token'];
		let response = [];
		//Checks if token is a proper hash, if not reject
		if (!isTokenValid(req.session.token, hash)) {
			response = {
				status: false,
				type: DataEvent.API_REQUEST_LAME,
				message: 'No Token Present. Auth Blocked'
			};
			reject(response);
			//res.json();
		} else {
			var member = req.session.user;
			jwt.verify(req.session.token, member.key, function(err, decoded) {
				if (err) {
					response = {
						status: false,
						type: DataEvent.API_REQUEST_LAME,
						message: 'Invalid Token. Auth Blocked'
					};
					reject(response);
				}
				response = {
					status: true,
					type: DataEvent.API_REQUEST_GOOD,
					message: 'Token Verified',
					token: decoded
				};
				resolve(response);
			});
		}
	});
}