'use strict';

const slug = require('slug'),
	xss = require('xss'),
	mellt = require('mellt'),
	mw = require('../middleware.js'),
	User = require('../models.js').user,
	mail = require('../mail.js'),
	env = require('../env.js'),
	router = require('express').Router();


// Settings form
router.route('/')
	.all( mw.ensureAuth, (req,res,next)=>{
		next();
	} )

	// Get settings form
	.get( (req,res)=>{
		res.render('settings');
	} )

	// Set new settings
	.post( (req,res,next)=>{
		
		//TODO: Validate everything! 
		
		User.findByIdAndUpdate(req.user.id, {$set:{
			name: xss(req.body.name),
			slug: slug(xss(req.body.slug)),
			email: req.body.email,
			settings: {
				units: req.body.units,
				defaultMap: req.body.map,
				defaultZoom: req.body.zoom,
				showSpeed: (req.body.showSpeed)?true:false,
				showAlt: (req.body.showAlt)?true:false,
				showStreetview: (req.body.showStreet)?true:false
			}
		}})
		.then( (user)=>{
			req.flash('success', 'Settings updated. ');
			res.redirect('/settings');
		})
		.catch( (err)=>{
			mw.throwErr(err,req);
			res.redirect('/settings');
		});
			
	} )

	// Delete user account
	.delete( (req,res,next)=>{
		
		//TODO: Reenter password?
		
		User.findByIdAndRemove(req.user)
			.then(()=>{
				req.flash('success', 'Your account has been deleted.  ');
				res.redirect('/');
			})
			.catch((err)=>{
				mw.throwErr(err,req);
				res.redirect('/settings');
			});
			
	} );


// Set password
router.route('/password')
	.all( mw.ensureAuth, (req,res,next)=>{
		next();
	} )

	// Email user a token, proceed at /password/:token
	.get( (req,res,next)=>{

		// Create token for password change
		req.user.createToken()
			.then( (token)=>{
				
				// Confirm password change request by email.
				mail.send({
					to: mail.to(req.user),
					from: mail.from,
					subject: 'Request to change your Tracman password',
					text: mail.text(`A request has been made to change your tracman password.  If you did not initiate this request, please contact support at keith@tracman.org.  \n\nTo change your password, follow this link:\n${env.url}/settings/password/${token}. \n\nThis request will expire in 1 hour. `),
					html: mail.html(`<p>A request has been made to change your tracman password.  If you did not initiate this request, please contact support at <a href="mailto:keith@tracman.org">keith@tracman.org</a>.  </p><p>To change your password, follow this link:<br><a href="${env.url}/settings/password/${token}">${env.url}/settings/password/${token}</a>. </p><p>This request will expire in 1 hour. </p>`)
				}).then( ()=>{
					// Alert user to check email.
					req.flash('success',`An email has been sent to <u>${req.user.email}</u>.  Check your inbox to complete your password change. `);
					res.redirect('/login#login');
				}).catch( (err)=>{
					mw.throwErr(err,req);
					res.redirect('/login#login');
				});
				
			})
			.catch( (err)=>{
				mw.throwErr(err,req);
				res.redirect('/password');
			});

	} );

router.route('/password/:token')

	// Check token
	.all( (req,res,next)=>{
		User
			.findOne({'auth.passToken': req.params.token})
			.where('auth.tokenExpires').gt(Date.now())
			.then((user) => {
				if (!user) {
					req.flash('danger', 'Password reset token is invalid or has expired. ');
					res.redirect( (req.isAuthenticated)?'/settings':'/login' );
				} else {
					res.locals.passwordUser = user;
					next();
				}
			})
			.catch((err)=>{
				mw.throwErr(err,req);
				res.redirect('/password');
			});
	} )

	// Show password change form
	.get( (req,res)=>{
		res.render('password');
	} )
	
	// Set new password
	.post( (req,res,next)=>{
		
		// Validate password
		let daysToCrack = mellt.CheckPassword(req.body.password);
		if (daysToCrack<10) {
			mw.throwErr(new Error(`That password could be cracked in ${daysToCrack} days!  Come up with a more complex password that would take at least 10 days to crack. `));
			res.redirect(`/settings/password/${req.params.token}`);
		}
		else {
			
			// Delete token
			res.locals.passwordUser.auth.passToken = undefined;
			res.locals.passwordUser.auth.tokenExpires = undefined;
			
			// Create hash
			res.locals.passwordUser.generateHash( req.body.password, (err,hash)=>{
				if (err){
					mw.throwErr(err,req);
					res.redirect(`/password/${req.params.token}`);
				}
				else {
					
					// Save new password to db
					res.locals.passwordUser.auth.password = hash;
					res.locals.passwordUser.save()
						.then( ()=>{
							req.flash('success', 'Password set.  You can use it to log in now. ');
							res.redirect('/login#login');
						})
						.catch( (err)=>{
							mw.throwErr(err,req);
							res.redirect('/login#signup');
						});
					
				}
			} );
			
		}
		
	} );


// Tracman pro
router.route('/pro')
	.all( mw.ensureAuth, (req,res,next)=>{
		next();
	} )

	// Get info about pro
	.get( (req,res,next)=>{
		res.render('pro');
	} )

	// Join Tracman pro
	.post( (req,res)=>{
		User.findByIdAndUpdate(req.user.id,
				{$set:{ isPro:true }})
			.then( (user)=>{
				req.flash('success','You have been signed up for pro. ');
				res.redirect('/map');
			})
			.catch( (err)=>{
				mw.throwErr(err,req);
				res.redirect('/pro');	
			});
	} );

module.exports = router;