Make LoadAWSConfig a shared function

backend/config.go

@@ -0,0 +1,19 @@
+package backend
+
+import (
+	"context"
+	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go-v2/config"
+	"log"
+)
+
+var region = "eu-central-1"
+
+// LoadAWSConfig loads the Shared AWS Configuration (~/.aws/config)
+func LoadAWSConfig() (cfg aws.Config) {
+	cfg, err := config.LoadDefaultConfig(context.TODO(), config.WithRegion(region))
+	if err != nil {
+		log.Fatalf("failed to load configuration, %v\n", err)
+	}
+	return cfg
+}

backend/text_to_speech.go

@@ -3,7 +3,6 @@ package backend
 import (
 	"context"
 	"fmt"
-	"github.com/aws/aws-sdk-go-v2/config"
 	"github.com/aws/aws-sdk-go-v2/service/polly"
 	"github.com/aws/aws-sdk-go-v2/service/polly/types"
 	"github.com/aws/aws-sdk-go-v2/service/s3"
@@ -32,12 +31,7 @@ func GetTargetVoice(language string) (string, error) {
 
 // CreateBucket creates an S3 bucket to store the output of Amazon Polly Synthesis Tasks i.e. audio streams.
 func CreateBucket(bucketName string) (location string, err error) {
-	// Load the Shared AWS Configuration (~/.aws/config)
-	cfg, err := config.LoadDefaultConfig(context.TODO(), config.WithRegion("eu-central-1"))
-	if err != nil {
-		log.Fatalf("failed to load configuration, %v\n", err)
-	}
-
+	cfg := LoadAWSConfig()
 	client := s3.NewFromConfig(cfg)
 	bucketLocationConstraint := types2.BucketLocationConstraintEuCentral1
 
@@ -60,12 +54,7 @@ func CreateBucket(bucketName string) (location string, err error) {
 
 // GetSpeechSynthesisTaskId function creates a synthesis task which converts provided text into an audio stream.
 func GetSpeechSynthesisTaskId(text, bucketName, languageCode, targetVoice string) (taskId, objectName string, err error) {
-	// Load the Shared AWS Configuration (~/.aws/config)
-	cfg, err := config.LoadDefaultConfig(context.TODO(), config.WithRegion("eu-central-1"))
-	if err != nil {
-		log.Fatalf("failed to load configuration, %v\n", err)
-	}
-
+	cfg := LoadAWSConfig()
 	client := polly.NewFromConfig(cfg)
 
 	outputFormat := types.OutputFormatMp3

backend/translate.go

@@ -3,19 +3,13 @@ package backend
 import (
 	context "context"
 	"fmt"
-	"github.com/aws/aws-sdk-go-v2/config"
 	"github.com/aws/aws-sdk-go-v2/service/translate"
 	"log"
 )
 
 // TranslateText detects the source language and translates the text into a desired language.
 func TranslateText(text, language string) (string, error) {
-	// Load the Shared AWS Configuration (~/.aws/config)
-	cfg, err := config.LoadDefaultConfig(context.TODO(), config.WithRegion("eu-central-1"))
-	if err != nil {
-		log.Fatalf("failed to load configuration, %v\n", err)
-	}
-
+	cfg := LoadAWSConfig()
 	client := translate.NewFromConfig(cfg)
 
 	// If auto is specified, Amazon Translate will call Amazon Comprehend to detect the source language.
@@ -30,7 +24,7 @@ func TranslateText(text, language string) (string, error) {
 	ctx := context.TODO()
 	resp, err := client.TranslateText(ctx, params)
 	if err != nil {
-		log.Fatalf("cannot translate, %v\n", err)
+		log.Fatalf("failed to translate, error: %v\n", err)
 		return "", err
 	}
 	fmt.Println(*resp.TranslatedText)

main.go

@@ -1,8 +1,6 @@
 package main
 
-import (
-	"zobot/backend"
-)
+import "zobot/backend"
 
 func main() {
 	// placeholder