Koa passport.authenticate wrapper

koa-passport-auth.js

// koa-passport-authenticate.js
'use strict'

const _ = require('lodash')
const passport = require('koa-passport')

'use strict'

// Middleware wrapper for koa passport to have proper error handling on authenticate.

const _ = require('lodash')
const passport = require('koa-passport')

module.exports = function (strategyName){
	return function *(next){
		let self = this
		yield passport.authenticate(strategyName,
			function *(err,user,reason){
				if(err){
					throw new Error(err)
				}
				_.set(self.state,`passport.${strategyName}`,{
					user: user,
					reason: reason
				});
				yield self.login(user)
			}
		).bind(this)(next);
		yield next
	}
}

// routes.js
'use strict'

const koaPassportAuth = require('koa-passport-authenticate');

router.post('/login', koaPassportAuth('local'), function *(next){
    // You can get the results from passport's middleware from context.state
    // under this.state.passport.${yourStrategyName} - In this case, 'local'
    
    if(this.state.passport.local.user){
        this.redirect('/success');
    }else{
        this.flash.error = this.state.passport.local.reason;
        this.redirect('/login');
    }
});