Integrate S3 storage solution into the project

storage/storage.go

@@ -0,0 +1,80 @@
+package storage
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"github.com/minio/minio-go/v7"
+	"github.com/minio/minio-go/v7/pkg/credentials"
+	"io"
+	"path/filepath"
+)
+
+type S3 struct {
+	Client *minio.Client
+	Bucket string
+}
+
+func NewS3(bucket string, region string, endpoint string, accessKey string, secretKey string) *S3 {
+	minioClient, err := minio.New(endpoint, &minio.Options{
+		Creds:  credentials.NewStaticV4(accessKey, secretKey, ""),
+		Secure: true,
+		Region: region,
+	})
+	if err != nil {
+		return nil
+	}
+	return &S3{Client: minioClient, Bucket: bucket}
+}
+
+func (storage *S3) Get(ctx context.Context, key string) ([]byte, error) {
+	object, err := storage.Client.GetObject(ctx, storage.Bucket, key, minio.GetObjectOptions{})
+	if err != nil {
+		return nil, err
+	}
+	defer object.Close()
+
+	data, err := io.ReadAll(object)
+	if err != nil {
+		return nil, err
+	}
+
+	return data, nil
+}
+
+func (storage *S3) Add(ctx context.Context, key string, data []byte) error {
+	reader := bytes.NewReader(data)
+	_, err := storage.Client.PutObject(ctx, storage.Bucket, key, reader, int64(reader.Len()), minio.PutObjectOptions{
+		ContentType: "application/octet-stream",
+	})
+
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (storage *S3) Delete(ctx context.Context, key string) error {
+	err := storage.Client.RemoveObject(ctx, storage.Bucket, key, minio.RemoveObjectOptions{})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (storage *S3) ListObjects(ctx context.Context, prefix string) ([]string, error) {
+	var objects []string
+	objectCh := storage.Client.ListObjects(ctx, storage.Bucket, minio.ListObjectsOptions{
+		Prefix: prefix,
+	})
+
+	for object := range objectCh {
+		if object.Err != nil {
+			return nil, fmt.Errorf("failed to list objects: %w", object.Err)
+		}
+		fileName := filepath.Base(object.Key)
+		objects = append(objects, fileName)
+	}
+	return objects, nil
+}