use env variables

.env.example

@@ -0,0 +1,17 @@
+#Serve Http
+PORT=7123
+HOST=127.0.0.1
+
+#PostgreSQL
+DB_HOST=localhost
+DB_USER=postgres
+DB_PASSWORD=strongpass
+DB_NAME=urdt_ussd
+DB_PORT=5432
+DB_SSLMODE=disable
+DB_TIMEZONE=Africa/Nairobi
+
+#External API Calls
+CREATE_ACCOUNT_URL=https://custodial.sarafu.africa/api/account/create
+TRACK_STATUS_URL=https://custodial.sarafu.africa/api/track/
+BALANCE_URL=https://custodial.sarafu.africa/api/account/status/

cmd/africastalking/main.go

@@ -16,6 +16,8 @@ import (
 	"git.defalsify.org/vise.git/logging"
 	"git.defalsify.org/vise.git/resource"
 
+	"git.grassecon.net/urdt/ussd/config"
+	"git.grassecon.net/urdt/ussd/initializers"
 	"git.grassecon.net/urdt/ussd/internal/handlers"
 	httpserver "git.grassecon.net/urdt/ussd/internal/http"
 	"git.grassecon.net/urdt/ussd/internal/storage"
@@ -26,6 +28,11 @@ var (
 	scriptDir = path.Join("services", "registration")
 )
 
+func init() {
+	fmt.Println("Running init")
+	initializers.LoadEnvVariables()
+}
+
 type atRequestParser struct{}
 
 func (arp *atRequestParser) GetSessionId(rq any) (string, error) {
@@ -65,6 +72,8 @@ func (arp *atRequestParser) GetInput(rq any) ([]byte, error) {
 }
 
 func main() {
+	config.LoadConfig()
+
 	var dbDir string
 	var resourceDir string
 	var size uint
@@ -75,8 +84,8 @@ func main() {
 	flag.StringVar(&resourceDir, "resourcedir", path.Join("services", "registration"), "resource dir")
 	flag.BoolVar(&engineDebug, "d", false, "use engine debug output")
 	flag.UintVar(&size, "s", 160, "max size of output")
-	flag.StringVar(&host, "h", "127.0.0.1", "http host")
+	flag.StringVar(&host, "h", initializers.GetEnv("HOST", "127.0.0.1"), "http host")
-	flag.UintVar(&port, "p", 7123, "http port")
+	flag.UintVar(&port, "p", initializers.GetEnvUint("PORT", 7123), "http port")
 	flag.Parse()
 
 	logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir, "outputsize", size)

cmd/async/main.go

@@ -13,6 +13,8 @@ import (
 	"git.defalsify.org/vise.git/logging"
 	"git.defalsify.org/vise.git/resource"
 
+	"git.grassecon.net/urdt/ussd/config"
+	"git.grassecon.net/urdt/ussd/initializers"
 	"git.grassecon.net/urdt/ussd/internal/handlers"
 	"git.grassecon.net/urdt/ussd/internal/storage"
 )
@@ -22,6 +24,10 @@ var (
 	scriptDir = path.Join("services", "registration")
 )
 
+func init() {
+	initializers.LoadEnvVariables()
+}
+
 type asyncRequestParser struct {
 	sessionId string
 	input     []byte
@@ -36,6 +42,8 @@ func (p *asyncRequestParser) GetInput(r any) ([]byte, error) {
 }
 
 func main() {
+	config.LoadConfig()
+
 	var sessionId string
 	var dbDir string
 	var resourceDir string
@@ -48,8 +56,8 @@ func main() {
 	flag.StringVar(&resourceDir, "resourcedir", path.Join("services", "registration"), "resource dir")
 	flag.BoolVar(&engineDebug, "d", false, "use engine debug output")
 	flag.UintVar(&size, "s", 160, "max size of output")
-	flag.StringVar(&host, "h", "127.0.0.1", "http host")
+	flag.StringVar(&host, "h", initializers.GetEnv("HOST", "127.0.0.1"), "http host")
-	flag.UintVar(&port, "p", 7123, "http port")
+	flag.UintVar(&port, "p", initializers.GetEnvUint("PORT", 7123), "http port")
 	flag.Parse()
 
 	logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir, "outputsize", size, "sessionId", sessionId)

cmd/http/main.go

@@ -15,6 +15,8 @@ import (
 	"git.defalsify.org/vise.git/logging"
 	"git.defalsify.org/vise.git/resource"
 
+	"git.grassecon.net/urdt/ussd/config"
+	"git.grassecon.net/urdt/ussd/initializers"
 	"git.grassecon.net/urdt/ussd/internal/handlers"
 	httpserver "git.grassecon.net/urdt/ussd/internal/http"
 	"git.grassecon.net/urdt/ussd/internal/storage"
@@ -25,7 +27,13 @@ var (
 	scriptDir = path.Join("services", "registration")
 )
 
+func init() {
+	initializers.LoadEnvVariables()
+}
+
 func main() {
+	config.LoadConfig()
+
 	var dbDir string
 	var resourceDir string
 	var size uint
@@ -36,8 +44,8 @@ func main() {
 	flag.StringVar(&resourceDir, "resourcedir", path.Join("services", "registration"), "resource dir")
 	flag.BoolVar(&engineDebug, "d", false, "use engine debug output")
 	flag.UintVar(&size, "s", 160, "max size of output")
-	flag.StringVar(&host, "h", "127.0.0.1", "http host")
+	flag.StringVar(&host, "h", initializers.GetEnv("HOST", "127.0.0.1"), "http host")
-	flag.UintVar(&port, "p", 7123, "http port")
+	flag.UintVar(&port, "p", initializers.GetEnvUint("PORT", 7123), "http port")
 	flag.Parse()
 
 	logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir, "outputsize", size)

cmd/main.go

@@ -10,6 +10,8 @@ import (
 	"git.defalsify.org/vise.git/engine"
 	"git.defalsify.org/vise.git/logging"
 	"git.defalsify.org/vise.git/resource"
+	"git.grassecon.net/urdt/ussd/config"
+	"git.grassecon.net/urdt/ussd/initializers"
 	"git.grassecon.net/urdt/ussd/internal/handlers"
 	"git.grassecon.net/urdt/ussd/internal/storage"
 )
@@ -19,7 +21,13 @@ var (
 	scriptDir = path.Join("services", "registration")
 )
 
+func init() {
+	initializers.LoadEnvVariables()
+}
+
 func main() {
+	config.LoadConfig()
+
 	var dbDir string
 	var size uint
 	var sessionId string

config/config.go

@@ -1,10 +1,16 @@
 package config
 
+import "git.grassecon.net/urdt/ussd/initializers"
 
-
+var (
-const (
+	CreateAccountURL string
-    CreateAccountURL = "https://custodial.sarafu.africa/api/account/create"
+	TrackStatusURL   string
-    TrackStatusURL   = "https://custodial.sarafu.africa/api/track/"
+	BalanceURL       string
-    BalanceURL       = "https://custodial.sarafu.africa/api/account/status/"
 )
 
+// LoadConfig initializes the configuration values after environment variables are loaded.
+func LoadConfig() {
+	CreateAccountURL = initializers.GetEnv("CREATE_ACCOUNT_URL", "https://custodial.sarafu.africa/api/account/create")
+	TrackStatusURL = initializers.GetEnv("TRACK_STATUS_URL", "https://custodial.sarafu.africa/api/track/")
+	BalanceURL = initializers.GetEnv("BALANCE_URL", "https://custodial.sarafu.africa/api/account/status/")
+}

go.mod

@@ -9,6 +9,8 @@ require (
 	gopkg.in/leonelquinteros/gotext.v1 v1.3.1
 )
 
+require github.com/joho/godotenv v1.5.1 // indirect
+
 require (
 	github.com/alecthomas/participle/v2 v2.0.0 // indirect
 	github.com/alecthomas/repr v0.2.0 // indirect

go.sum

@@ -16,6 +16,8 @@ github.com/graygnuorg/go-gdbm v0.0.0-20220711140707-71387d66dce4 h1:U4kkNYryi/qf
 github.com/graygnuorg/go-gdbm v0.0.0-20220711140707-71387d66dce4/go.mod h1:zpZDgZFzeq9s0MIeB1P50NIEWDFFHSFBohI/NbaTD/Y=
 github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
 github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/mattn/kinako v0.0.0-20170717041458-332c0a7e205a h1:0Q3H0YXzMHiciXtRcM+j0jiCe8WKPQHoRgQiRTnfcLY=
 github.com/mattn/kinako v0.0.0-20170717041458-332c0a7e205a/go.mod h1:CdTTBOYzS5E4mWS1N8NWP6AHI19MP0A2B18n3hLzRMk=
 github.com/peteole/testdata-loader v0.3.0 h1:8jckE9KcyNHgyv/VPoaljvKZE0Rqr8+dPVYH6rfNr9I=

initializers/loadEnvVariables.go

@@ -0,0 +1,34 @@
+package initializers
+
+import (
+	"log"
+	"os"
+	"strconv"
+
+	"github.com/joho/godotenv"
+)
+
+func LoadEnvVariables() {
+	err := godotenv.Load()
+	if err != nil {
+		log.Fatal("Error loading .env file")
+	}
+}
+
+// Helper to get environment variables with a default fallback
+func GetEnv(key, defaultVal string) string {
+  if value, exists := os.LookupEnv(key); exists {
+   	return value
+	}
+  return defaultVal
+}
+
+// Helper to safely convert environment variables to uint
+func GetEnvUint(key string, defaultVal uint) uint {
+	if value, exists := os.LookupEnv(key); exists {
+		if parsed, err := strconv.Atoi(value); err == nil && parsed >= 0 {
+			return uint(parsed)
+		}
+	}
+	return defaultVal
+}