Optionally read a .env file for env vars.

Signed-off-by: Katharine Berry <[email protected]>

Author: Katharine

service/assistant/config/config.go

@@ -14,7 +14,12 @@
 
 package config
 
-import "os"
+import (
+	"log"
+	"os"
+
+	"github.com/joho/godotenv"
+)
 
 // TODO: something reasonable.
 
@@ -35,6 +40,14 @@ func GetConfig() *Config {
 }
 
 func init() {
+	// Load .env file if it exists
+	if err := godotenv.Load(); err != nil {
+		// Only log if the file exists but couldn't be loaded
+		if !os.IsNotExist(err) {
+			log.Printf("Error loading .env file: %v", err)
+		}
+	}
+
 	c = Config{
 		GeminiKey:             os.Getenv("GEMINI_KEY"),
 		MapboxKey:             os.Getenv("MAPBOX_KEY"),

service/go.mod

@@ -7,6 +7,7 @@ toolchain go1.23.3
 require (
 	github.com/google/uuid v1.6.0
 	github.com/honeycombio/beeline-go v1.18.0
+	github.com/joho/godotenv v1.5.1
 	github.com/redis/go-redis/v9 v9.7.1
 	github.com/yuin/gopher-lua v1.1.1
 	golang.org/x/exp v0.0.0-20250228200357-dead58393ab7

service/go.sum

@@ -38,6 +38,8 @@ github.com/honeycombio/beeline-go v1.18.0 h1:usCoLWAX0kMHPOd9+4sVM8MH0FZTTKaBm3U
 github.com/honeycombio/beeline-go v1.18.0/go.mod h1:EQ+Wz76mVNAT98hwahTqna61y/XVVxEqWyh4k87BXSM=
 github.com/honeycombio/libhoney-go v1.25.0 h1:r33tlX90HtafK0bgRcjfNnsrJ9ZMTKuI/1DYaOFCc1o=
 github.com/honeycombio/libhoney-go v1.25.0/go.mod h1:Fc0HjqlwYf5xy6H34EItpOverAGbCixnYOX3YTUQovg=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
 github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=