From 14e5fa2bb800bb0c39a405582d9a8c343cfc0c2c Mon Sep 17 00:00:00 2001
From: Artur Girenko <a.girenko@gmail.com>
Date: Sun, 6 Mar 2016 09:59:59 +0100
Subject: [PATCH] provide feedback after use-ios-device command

---
 re-natal.coffee | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/re-natal.coffee b/re-natal.coffee
index 401cb5d..712e1aa 100644
--- a/re-natal.coffee
+++ b/re-natal.coffee
@@ -26,6 +26,7 @@ projNameUsRx    = /\$PROJECT_NAME_UNDERSCORED\$/g
 interfaceDepsRx = /\$INTERFACE_DEPS\$/g
 platformRx      = /\$PLATFORM\$/g
 devHostRx       = /\$DEV_HOST\$/g
+ipAddressRx     = /^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/i
 figwheelUrlRx   = /ws:\/\/[0-9a-zA-Z\.]*:/g
 appDelegateRx   = /http:\/\/[^:]+/g
 rnVersion       = '0.20.0'
@@ -214,15 +215,24 @@ configureDevHostForAndroidDevice = (deviceType) ->
   catch {message}
     logErr message
 
+resolveIosDevHost = (deviceType) ->
+  if deviceType == 'simulator'
+    log "Using 'localhost' for iOS simulator"
+    'localhost'
+  else if deviceType == 'real'
+    en0Ip = exec('ipconfig getifaddr en0', true).toString().trim()
+    log "Using IP of interface en0:'#{en0Ip}' for real iOS device"
+    en0Ip
+  else if deviceType.match(ipAddressRx)
+    log "Using development host IP: '#{deviceType}'"
+    deviceType
+  else
+    log("Value '#{deviceType}' is not a valid IP address, still configured it as development host for iOS", 'yellow')
+    deviceType
+
 configureDevHostForIosDevice = (deviceType) ->
   try
-    devHost = if deviceType == 'simulator'
-                'localhost'
-              else if deviceType == 'real'
-                exec('ipconfig getifaddr en0', true).toString().trim()
-              else
-                deviceType
-
+    devHost = resolveIosDevHost(deviceType)
     config = readConfig()
     config.iosHost = devHost
     writeConfig(config)