From 39ad0e614f6c97595710b4d8f535b41f0d83aa0e Mon Sep 17 00:00:00 2001
From: Brian Picciano <mediocregopher@gmail.com>
Date: Thu, 5 May 2022 20:57:17 -0600
Subject: [PATCH] Use envvars to configure srv

---
 config.nix                     |  2 +-
 default.nix                    |  6 ++-
 srv/.gitignore                 |  1 -
 srv/default.nix                | 82 +++++++++++++++++++---------------
 srv/mailinglist/mailinglist.go |  2 +-
 5 files changed, 52 insertions(+), 41 deletions(-)
 delete mode 100644 srv/.gitignore

diff --git a/config.nix b/config.nix
index 863bc50..95b2b0e 100644
--- a/config.nix
+++ b/config.nix
@@ -5,7 +5,7 @@
     powSecret = "ssshhh";
     mlSMTPAddr = "";
     mlSMTPAuth = "";
-    publicURL = "http://localhost:4000";
+    mlPublicURL = "http://localhost:4000";
     listenProto = "tcp";
     listenAddr = ":4000";
 
diff --git a/default.nix b/default.nix
index 6e06c43..bb9d8f8 100644
--- a/default.nix
+++ b/default.nix
@@ -23,11 +23,13 @@
 
     static = (import ./static) { inherit pkgs; };
 
-    srv = (import ./srv) {
-        inherit pkgs config;
+    srv = pkgs.callPackage (import ./srv) {
+        inherit config;
         staticBuild=static.build;
     };
 
+    srvBin = srv.bin;
+
     redisCfg = pkgs.writeText "mediocre-blog-redisCfg" ''
         port 0
         unixsocket ${config.redisListenPath}
diff --git a/srv/.gitignore b/srv/.gitignore
deleted file mode 100644
index a43632f..0000000
--- a/srv/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-mailinglist.sqlite3
diff --git a/srv/default.nix b/srv/default.nix
index bc828a0..3037fd7 100644
--- a/srv/default.nix
+++ b/srv/default.nix
@@ -1,25 +1,42 @@
-{pkgs, config, staticBuild}: rec {
-
-    mailingListOpts = [
-        "-ml-smtp-addr=${config.mlSMTPAddr}"
-        "-ml-smtp-auth='${config.mlSMTPAuth}'"
-        "-data-dir=${config.dataDir}"
-        "-public-url=${config.publicURL}"
-    ];
-
-    opts = mailingListOpts ++ [
-        "-pow-secret=${config.powSecret}"
-        "-listen-proto=${config.listenProto}"
-        "-listen-addr=${config.listenAddr}"
-        "-redis-proto=unix"
-        "-redis-addr=${config.redisListenPath}"
-    ] ++ (
-        if config.staticProxyURL == ""
-        then [ "-static-dir=${staticBuild}" ]
-        else [ "-static-proxy-url=${config.staticProxyURL}" ]
-    );
-
-    build = pkgs.buildGoModule {
+{
+  buildGoModule,
+  writeScript,
+  writeScriptBin,
+  stdenv,
+
+  config,
+  staticBuild,
+}: rec {
+
+    env = ''
+
+      export MEDIOCRE_BLOG_DATA_DIR=${config.dataDir}
+
+      # mailing list
+      export MEDIOCRE_BLOG_ML_SMTP_ADDR=${config.mlSMTPAddr}
+      export MEDIOCRE_BLOG_ML_SMTP_AUTH='${config.mlSMTPAuth}'
+      export MEDIOCRE_BLOG_ML_PUBLIC_URL=${config.mlPublicURL}
+
+      # redis
+      export MEDIOCRE_BLOG_REDIS_PROTO=unix
+      export MEDIOCRE_BLOG_REDIS_ADDR=${config.redisListenPath}
+
+      # pow
+      export MEDIOCRE_BLOG_POW_SECRET=${config.powSecret}
+
+      # static proxy
+      if [ "${config.staticProxyURL}" == "" ]; then
+        export MEDIOCRE_BLOG_STATIC_DIR=${staticBuild}
+      else
+        export MEDIOCRE_BLOG_STATIC_URL=${config.staticProxyURL}
+      fi
+
+      # listening
+      export MEDIOCRE_BLOG_LISTEN_PROTO=${config.listenProto}
+      export MEDIOCRE_BLOG_LISTEN_ADDR=${config.listenAddr}
+    '';
+
+    build = buildGoModule {
         pname = "mediocre-blog-srv";
         version = "dev";
         src = ./.;
@@ -29,24 +46,17 @@
         checkPhase = '''';
     };
 
-    bin = pkgs.writeScript "mediocre-blog-srv-bin" ''
+    bin = writeScript "mediocre-blog-srv-bin" ''
         #!/bin/sh
         mkdir -p "${config.dataDir}"
-        exec ${build}/bin/mediocre-blog ${toString opts}
-    '';
-
-    runScript = pkgs.writeScriptBin "run-mediocre-blog" ''
-        mkdir -p "${config.dataDir}"
-        go run ./cmd/mediocre-blog/main.go ${toString opts}
-    '';
-
-    runMailingListCLIScript = pkgs.writeScriptBin "run-mailinglist-cli" ''
-        go run ./cmd/mailinglist-cli/main.go ${toString mailingListOpts} "$@"
+        source ${env}
+        exec ${build}/bin/mediocre-blog
     '';
 
-    shell = pkgs.stdenv.mkDerivation {
+    shell = stdenv.mkDerivation {
         name = "mediocre-blog-srv-shell";
-        buildInputs = [ pkgs.go runScript runMailingListCLIScript ];
+        shellHook = ''
+          source ${env}
+        '';
     };
-
 }
diff --git a/srv/mailinglist/mailinglist.go b/srv/mailinglist/mailinglist.go
index 60c1174..fc6e014 100644
--- a/srv/mailinglist/mailinglist.go
+++ b/srv/mailinglist/mailinglist.go
@@ -53,7 +53,7 @@ type Params struct {
 
 // SetupCfg implement the cfg.Cfger interface.
 func (p *Params) SetupCfg(cfg *cfg.Cfg) {
-	publicURLStr := cfg.String("public-url", "http://localhost:4000", "URL this service is accessible at")
+	publicURLStr := cfg.String("ml-public-url", "http://localhost:4000", "URL this service is accessible at")
 
 	cfg.OnInit(func(ctx context.Context) error {
 		var err error