add file storage module

go.mod

@@ -1,6 +1,6 @@
 module evening_detective_server
 
-go 1.25.0
+go 1.26
 
 require (
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0
@@ -11,6 +11,25 @@ require (
 )
 
 require (
+	github.com/aws/aws-sdk-go-v2 v1.42.0 // indirect
+	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.13 // indirect
+	github.com/aws/aws-sdk-go-v2/config v1.32.25 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.19.24 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.29 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager v0.2.11 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.29 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.29 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.30 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.12 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.22 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.29 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.29 // indirect
+	github.com/aws/aws-sdk-go-v2/service/s3 v1.104.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/signin v1.2.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.31.3 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.36.6 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.43.3 // indirect
+	github.com/aws/smithy-go v1.27.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
@@ -27,6 +46,7 @@ require (
 	github.com/jackc/pgx/v5 v5.10.0
 	github.com/jackc/puddle/v2 v2.2.2 // indirect
 	github.com/joho/godotenv v1.5.1
+	github.com/kzzan/s3kit v0.0.4
 	github.com/swaggest/swgui v1.8.8
 	golang.org/x/crypto v0.53.0
 	golang.org/x/net v0.55.0 // indirect

internal/modules/file_storage/interface.go

@@ -0,0 +1,14 @@
+package file_storage
+
+import "context"
+
+type File struct {
+	Name string
+	Data []byte
+	Mime string
+}
+
+type IFileStorage interface {
+	Put(ctx context.Context, file *File) error
+	Get(ctx context.Context, filename string) (*File, error)
+}

internal/modules/file_storage/storage.go

@@ -0,0 +1,58 @@
+package file_storage
+
+import (
+	"context"
+	"mime"
+	"path/filepath"
+
+	"github.com/kzzan/s3kit"
+)
+
+type storage struct {
+	client *s3kit.Client
+	bucket string
+}
+
+func NewRustFSStorage(
+	endpoint string,
+	accessKeyID string,
+	secretAccessKey string,
+	bucket string,
+) (IFileStorage, error) {
+	client, err := s3kit.New(s3kit.Config{
+		Endpoint:        endpoint,
+		AccessKeyID:     accessKeyID,
+		SecretAccessKey: secretAccessKey,
+		Region:          "ru-1",
+	})
+	if err != nil {
+		return nil, err
+	}
+	return &storage{
+		client: client,
+		bucket: bucket,
+	}, nil
+}
+
+func (s *storage) Put(ctx context.Context, file *File) error {
+	return s.client.PutObjectBytes(ctx, s.bucket, file.Name, file.Data, file.Mime)
+}
+
+func (s *storage) Get(ctx context.Context, filename string) (*File, error) {
+	data, err := s.client.GetObjectBytes(ctx, s.bucket, filename)
+	if err != nil {
+		return nil, err
+	}
+	return &File{
+		Name: filename,
+		Data: data,
+		Mime: s.getMimeType(filename),
+	}, nil
+}
+
+func (s *storage) getMimeType(filename string) string {
+	if mimeType := mime.TypeByExtension(filepath.Ext(filename)); mimeType != "" {
+		return mimeType
+	}
+	return "application/octet-stream"
+}