feat: add env file to question-service

Author: tituschewxj

apps/question-service/.gitignore

@@ -3,3 +3,4 @@ cs3219-g24-firebase-adminsdk-9cm7h-b1675603ab.json
 test_create_api_results.txt
 test_list_api_results.txt
 test_update_api_results.txt
+.env

apps/question-service/go.mod

@@ -10,6 +10,8 @@ require (
 	google.golang.org/grpc v1.67.0
 )
 
+require github.com/joho/godotenv v1.5.1
+
 require (
 	cloud.google.com/go v0.115.1 // indirect
 	cloud.google.com/go/auth v0.9.4 // indirect

apps/question-service/go.sum

@@ -81,6 +81,8 @@ github.com/googleapis/enterprise-certificate-proxy v0.3.4 h1:XYIDZApgAnrN1c855gT
 github.com/googleapis/enterprise-certificate-proxy v0.3.4/go.mod h1:YKe7cfqYXjKGpGvmSg28/fFvhNzinZQm8DGnaburhGA=
 github.com/googleapis/gax-go/v2 v2.13.0 h1:yitjD5f7jQHhyDsnhKEBU52NdvvdSeGzlAnDPT0hH1s=
 github.com/googleapis/gax-go/v2 v2.13.0/go.mod h1:Z/fvTZXF8/uw7Xu5GuslPw+bplx6SS338j1Is2S+B7A=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=

apps/question-service/main.go

@@ -14,6 +14,7 @@ import (
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"
 	"github.com/go-chi/cors"
+	"github.com/joho/godotenv"
 	"google.golang.org/api/option"
 )
 
@@ -33,9 +34,16 @@ func initFirestore(ctx context.Context, credentialsPath string) (*firestore.Clie
 }
 
 func main() {
+	// Load .env file
+	err := godotenv.Load()
+	if err != nil {
+		log.Fatal("Error loading .env file")
+	}
+
 	// Initialize Firestore client
 	ctx := context.Background()
-	client, err := initFirestore(ctx, "cs3219-g24-firebase-adminsdk-9cm7h-b1675603ab.json")
+	firebaseCredentialPath := os.Getenv("FIREBASE_CREDENTIAL_PATH")
+	client, err := initFirestore(ctx, firebaseCredentialPath)
 	if err != nil {
 		log.Fatalf("Failed to initialize Firestore client: %v", err)
 	}