From cf5b024e189cb4ed85f80b521cf9e0e5dc5b5070 Mon Sep 17 00:00:00 2001
From: Ben Sima <ben@bsima.me>
Date: Sat, 16 Feb 2019 20:51:58 -0800
Subject: Make port configurable

---
 configuration.nix | 10 +++++++---
 ibb/Main.hs       |  8 +++++++-
 ibb/module.nix    | 47 +++++++++++++++++++++++++++++------------------
 3 files changed, 43 insertions(+), 22 deletions(-)

diff --git a/configuration.nix b/configuration.nix
index 775bc99..adf90d3 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -2,6 +2,7 @@
 
 let
   bensIp = "68.107.97.20";
+  ibbPort = "3000";
 in
 {
   nixpkgs.config.packageOverrides = pkgs: {
@@ -12,7 +13,10 @@ in
 
   services = {
 
-    ibb.enable = true;
+    ibb = {
+      enable = true;
+      port = ibbPort;
+    };
 
     nginx = {
       enable = true;
@@ -22,7 +26,7 @@ in
       recommendedTlsSettings = true;
       virtualHosts = {
         "simatime.com".locations."/".proxyPass = "http://${bensIp}:8000";
-        "dev.simatime.com".locations."/".proxyPass = "http://${bensIp}:3000";
+        "dev.simatime.com".locations."/".proxyPass = "http://${bensIp}:${ibbPort}";
         "hero.simatime.com".locations."/".proxyPass = "http://${bensIp}:3001";
         "tv.simatime.com".locations."/".proxyPass = "http://${bensIp}:8096"; # emby runs on port 8096
         "influencedbybooks.com" = {
@@ -30,7 +34,7 @@ in
           enableACME = true;
           locations = {
             "/" = {
-              proxyPass = "http://localhost:3000";
+              proxyPass = "http://localhost:${ibbPort}";
             };
           };
         };
diff --git a/ibb/Main.hs b/ibb/Main.hs
index 544b0c8..05e7738 100644
--- a/ibb/Main.hs
+++ b/ibb/Main.hs
@@ -3,6 +3,7 @@
 
 module Main where
 
+import Data.Maybe (fromMaybe)
 import Data.ByteString.Lazy (ByteString)
 import Data.Text.Lazy (Text)
 import Data.Text.Lazy.Encoding (encodeUtf8)
@@ -13,6 +14,7 @@ import Text.Hamlet (shamlet)
 import Text.Lucius (lucius, renderCss)
 import Web.Scotty (ActionM, scotty, get, html, raw, setHeader)
 import Influencers
+import System.Environment (lookupEnv)
 
 render :: Html -> ActionM ()
 render = html . renderHtml
@@ -21,7 +23,11 @@ css :: ByteString -> ActionM ()
 css src = setHeader "content-type" "text/css" >> raw src
 
 main :: IO ()
-main = scotty 3000 $ do
+main = do
+    port <- read <$> fromMaybe "3000" <$> lookupEnv "PORT" :: IO Int
+    scotty port routes
+
+routes = do
     get "/" $ render homepage
     get "/custom.css" $ css stylesheet
 
diff --git a/ibb/module.nix b/ibb/module.nix
index b4f7609..e2d4dd0 100644
--- a/ibb/module.nix
+++ b/ibb/module.nix
@@ -7,24 +7,35 @@
 
 let
   cfg = config.services.ibb;
-in {
-   options.services.ibb.enable = lib.mkEnableOption "Enable the IBB service";
-   config = lib.mkIf cfg.enable {
-     systemd.services.ibb = {
-       path = with pkgs; [ ibb bash ];
-       wantedBy = [ "multi-user.target" ];
-       script = ''
-	 ./bin/ibb
-       '';
-       description = ''
-         Influenced By Books website
-       '';
-       serviceConfig = {
-         WorkingDirectory=pkgs.ibb;
-         KillSignal="INT";
-         Type = "simple";
-         Restart = "on-abort";
-         RestartSec = "10";
+in
+{
+  options.services.ibb = {
+    enable = lib.mkEnableOption "Enable the IBB service";
+    port = lib.mkOption {
+      type = lib.types.string;
+      default = "3000";
+      description = ''
+        The port on which IBB will listen for
+        incoming HTTP traffic.
+      '';
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    systemd.services.ibb = {
+      path = with pkgs; [ ibb bash ];
+      wantedBy = [ "multi-user.target" ];
+      script = ''
+	  PORT=${cfg.port} ./bin/ibb
+      '';
+      description = ''
+        Influenced By Books website
+      '';
+      serviceConfig = {
+        WorkingDirectory=pkgs.ibb;
+        KillSignal="INT";
+        Type = "simple";
+        Restart = "on-abort";
+        RestartSec = "10";
       };
     };
   };
-- 
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