From 15a37f3e8c5cd5f21794ed18da434c64b9f833f2 Mon Sep 17 00:00:00 2001
From: datalore <d4t4.l0r3@protonmail.ch>
Date: Wed, 6 Aug 2025 11:00:18 +0200
Subject: [PATCH] feat(config): Now expanding env vars before reading files

---
 config.go |  2 +-
 main.go   | 12 +++++++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/config.go b/config.go
index e5b4ebd..6b47dfb 100644
--- a/config.go
+++ b/config.go
@@ -50,7 +50,7 @@ const (
 func ParseConfig(path string) (Config, error) {
 	var config Config
 
-	buffer, err := os.ReadFile(path)
+	buffer, err := os.ReadFile(os.ExpandEnv(path))
 	if err != nil {
 		return config, err
 	}
diff --git a/main.go b/main.go
index a993714..3cca74f 100644
--- a/main.go
+++ b/main.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"flag"
 	"log"
 	"os"
 	"os/signal"
@@ -19,8 +20,17 @@ func must[T any](obj T, err error) T {
 func main() {
 	defer midi.CloseDriver()
 
+	var (
+		configPath string
+		printDebugMsgs bool
+	)
+
+	flag.StringVar(&configPath, "f", "$HOME/.config/midi-hid/config.yaml", "Config file")
+	flag.BoolVar(&printDebugMsgs, "debug", false, "Print debug messages")
+	flag.Parse()
+
 	log.Println("Starting...")
-	config := must(ParseConfig("config.yaml"))
+	config := must(ParseConfig(configPath))
 	controllerList := must(config.Construct())
 	defer controllerList.Stop()