rewrite lambda functions

_lambda/common/utils.js

@@ -2,18 +2,17 @@ import meta from '../../src/data/meta'
 import members from '../../src/data/members'
 
 export const redirect = site => {
-    const location = site && site.url ? site.url : meta.url
     return {
         statusCode: 302,
         headers: {
-            Location: location,
+            Location: site.url,
             'Cache-Control': 'no-cache, no-store, must-revalidate'
         },
-        body: `Redirecting..."`
+        body: `Redirecting to "${site.title}"`
     }
 }
 
-export const getIndex = url => members.findIndex(site => site.url.includes(url))
+export const getIndex = url => members.findIndex(site => url.includes(site.url))
 
 export const getNext = url => {
     const index = getIndex(url)
@@ -35,6 +34,8 @@ export const getPrevious = url => {
 
 export const getRandom = url => {
     const randomIndex = Math.floor(Math.random() * members.length)
-    const filtered = members.filter(site => !site.url.includes(url))
-    return filtered[randomIndex]
+    const sites = url
+        ? members.filter(site => !url.includes(site.url))
+        : members
+    return sites[randomIndex]
 }

_lambda/next.js

@@ -1,9 +1,8 @@
-import { redirect, getNext } from './common/utils'
+import { redirect, getNext, getRandom } from './common/utils'
 
 exports.handler = function(event, context, callback) {
-    const { host } = event.headers
-    console.log(event.headers)
-    const next = getNext(host)
+    const { referer } = event.headers
+    const next = getNext(referer) || getRandom()
 
     callback(null, redirect(next))
 }

_lambda/prev.js

@@ -1,8 +1,8 @@
-import { redirect, getPrevious } from './common/utils'
+import { redirect, getPrevious, getRandom } from './common/utils'
 
 exports.handler = function(event, context, callback) {
-    const { host } = event.headers
-    const prev = getPrevious(host)
+    const { referer } = event.headers
+    const prev = getPrevious(referer) || getRandom()
 
     callback(null, redirect(prev))
 }

_lambda/random.js

@@ -1,8 +1,8 @@
 import { redirect, getRandom } from './common/utils'
 
 exports.handler = function(event, context, callback) {
-    const { host } = event.headers
-    const random = getRandom(host)
+    const { referer } = event.headers
+    const random = getRandom(referer)
 
     callback(null, redirect(random))
 }