From ebe902a0089a599530ed336356de775765d9904f Mon Sep 17 00:00:00 2001
From: Lloyd Brookes <lloyd.brookes@gmail.com>
Date: Sat, 23 May 2020 12:10:17 +0100
Subject: [PATCH] remove unused code

---
 bin/cli.js   |  7 +------
 index.js     |  4 ++--
 lib/util.js  | 31 ++-----------------------------
 test/util.js | 12 ++++++------
 4 files changed, 11 insertions(+), 43 deletions(-)

diff --git a/bin/cli.js b/bin/cli.js
index 0d09258..3e26056 100755
--- a/bin/cli.js
+++ b/bin/cli.js
@@ -6,10 +6,5 @@ if (!(from && to && url)) {
   console.log('USAGE:')
   console.log('$ lws-rewrite <from> <to> <url>')
 } else {
-  const urlUtil = require('url')
-  if (urlUtil.parse(to).host) {
-    console.log(util.getRemoteTargetUrl(from, to, url))
-  } else {
-    console.log(util.getRemoteTargetUrl(from, to, url))
-  }
+  console.log(util.getTargetUrl(from, to, url))
 }
diff --git a/index.js b/index.js
index 253e60b..5f535fa 100644
--- a/index.js
+++ b/index.js
@@ -69,7 +69,7 @@ function proxyRequest (route, mw, lws) {
       ctx.respond = false
 
       /* get remote URL */
-      const remoteUrl = util.getRemoteTargetUrl(route.from, route.to, ctx.url)
+      const remoteUrl = util.getTargetUrl(route.from, route.to, ctx.url)
 
       /* info about this rewrite */
       const rewrite = {
@@ -159,7 +159,7 @@ function proxyRequest (route, mw, lws) {
 
 function rewrite (from, to, mw) {
   return async function (ctx, next) {
-    const targetUrl = util.getLocalTargetUrl(from, to, ctx.url)
+    const targetUrl = util.getTargetUrl(from, to, ctx.url)
     if (ctx.url !== targetUrl) {
       const initialUrl = ctx.url
       ctx.url = targetUrl
diff --git a/lib/util.js b/lib/util.js
index d536cf8..8015b12 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -15,7 +15,7 @@ function parseRewriteRules (rules) {
   })
 }
 
-function getRemoteTargetUrl (from, to, url) {
+function getTargetUrl (from, to, url) {
   const { pathToRegexp } = require('path-to-regexp')
   const fromParams = []
   const re = pathToRegexp(from, fromParams)
@@ -63,34 +63,7 @@ function removeCookieAttribute (cookie = '', attr) {
     .join('; ')
 }
 
-function getLocalTargetUrl (from, to, url) {
-  const { pathToRegexp } = require('path-to-regexp')
-  const keys = []
-  const re = pathToRegexp(from, keys)
-  const keysObject = toObject(keys)
-  const matches = re.exec(url)
-
-  if (matches) {
-    return to.replace(/\$(\d+)|(?::(\w+))/g, (_, n, name) => {
-      if (name) return matches[keysObject[name].index + 1] || ''
-      return matches[n] || ''
-    })
-  } else {
-    return url
-  }
-}
-
-function toObject (params) {
-  const object = {}
-  params.forEach((param, i) => {
-    param.index = i
-    object[param.name] = param
-  })
-  return object
-}
-
 exports.parseRewriteRules = parseRewriteRules
-exports.getRemoteTargetUrl = getRemoteTargetUrl
+exports.getTargetUrl = getTargetUrl
 exports.removeHopSpecificHeaders = removeHopSpecificHeaders
 exports.removeCookieAttribute = removeCookieAttribute
-exports.getLocalTargetUrl = getLocalTargetUrl
diff --git a/test/util.js b/test/util.js
index f648ee4..8d7c473 100644
--- a/test/util.js
+++ b/test/util.js
@@ -29,32 +29,32 @@ tom.test('parseRewriteRules', async function () {
 })
 
 tom.test('getToUrl: no params', async function () {
-  const result = util.getRemoteTargetUrl('/one', '/two', '/one')
+  const result = util.getTargetUrl('/one', '/two', '/one')
   a.strictEqual(result, '/two')
 })
 
 tom.test('getToUrl: replace named parameter', async function () {
-  const result = util.getRemoteTargetUrl('/one/:id', '/:id/two', '/one/2')
+  const result = util.getTargetUrl('/one/:id', '/:id/two', '/one/2')
   a.strictEqual(result, '/2/two')
 })
 
 tom.test("getToUrl: don't replace named parameter", async function () {
-  const result = util.getRemoteTargetUrl('/one/:id', '/:id/two', '/one/2/one')
+  const result = util.getTargetUrl('/one/:id', '/:id/two', '/one/2/one')
   a.strictEqual(result, '/one/2/one')
 })
 
 tom.test('getToUrl: replace named parameter twice', async function () {
-  const result = util.getRemoteTargetUrl('/one/:id', '/:id/two/:id', '/one/2')
+  const result = util.getTargetUrl('/one/:id', '/:id/two/:id', '/one/2')
   a.strictEqual(result, '/2/two/2')
 })
 
 tom.test('getToUrl: replaced wildcard', async function () {
-  const result = util.getRemoteTargetUrl('/(.*)', 'http://example.com/$1', '/api/2/data')
+  const result = util.getTargetUrl('/(.*)', 'http://example.com/$1', '/api/2/data')
   a.strictEqual(result, 'http://example.com/api/2/data')
 })
 
 tom.test('getToUrl: replaced named param plus wildcard', async function () {
-  const result = util.getRemoteTargetUrl('/:name/(.*)', 'http://example.com/$2/:name', '/api/2/data')
+  const result = util.getTargetUrl('/:name/(.*)', 'http://example.com/$2/:name', '/api/2/data')
   a.strictEqual(result, 'http://example.com/2/data/api')
 })