refactor(tmedia): extract item to self struct

app/dl/serve.go

@@ -22,7 +22,6 @@ import (
 
 	"github.com/iyear/tdl/pkg/consts"
 	"github.com/iyear/tdl/pkg/dcpool"
-	"github.com/iyear/tdl/pkg/downloader"
 	"github.com/iyear/tdl/pkg/kv"
 	"github.com/iyear/tdl/pkg/logger"
 	"github.com/iyear/tdl/pkg/storage"
@@ -32,7 +31,7 @@ import (
 )
 
 type media struct {
-	*downloader.Item
+	*tmedia.Media
 	MIME string
 }
 
@@ -145,7 +144,7 @@ func handler(h func(w http.ResponseWriter, r *http.Request) error) http.Handler
 }
 
 func convItem(msg *tg.Message) (*media, error) {
-	item, ok := tmedia.GetMedia(msg)
+	md, ok := tmedia.GetMedia(msg)
 	if !ok {
 		return nil, errors.New("message is not a media")
 	}
@@ -163,7 +162,7 @@ func convItem(msg *tg.Message) (*media, error) {
 	}
 
 	return &media{
-		Item: item,
-		MIME: mime,
+		Media: md,
+		MIME:  mime,
 	}, nil
 }

app/internal/dliter/iter.go

@@ -126,9 +126,10 @@ func (iter *Iter) item(ctx context.Context, i, j int) (*downloader.Item, error)
 	}
 	item.Name = buf.String()
 
-	item.ID = iter.ij2n(i, j)
-
-	return item, nil
+	return &downloader.Item{
+		ID:    iter.ij2n(i, j),
+		Media: item,
+	}, nil
 }
 
 func (iter *Iter) Finish(_ context.Context, id int) error {

pkg/downloader/iter.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"errors"
 
-	"github.com/gotd/td/tg"
+	"github.com/iyear/tdl/pkg/tmedia"
 )
 
 var ErrSkip = errors.New("skip")
@@ -16,9 +16,6 @@ type Iter interface {
 }
 
 type Item struct {
-	ID           int // unique in iter
-	InputFileLoc tg.InputFileLocationClass
-	Name         string
-	Size         int64
-	DC           int
+	ID int // unique in iter
+	*tmedia.Media
 }

pkg/tmedia/document.go

@@ -5,17 +5,15 @@ import (
 
 	"github.com/gabriel-vasile/mimetype"
 	"github.com/gotd/td/tg"
-
-	"github.com/iyear/tdl/pkg/downloader"
 )
 
-func GetDocumentInfo(doc *tg.MessageMediaDocument) (*downloader.Item, bool) {
+func GetDocumentInfo(doc *tg.MessageMediaDocument) (*Media, bool) {
 	d, ok := doc.Document.(*tg.Document)
 	if !ok {
 		return nil, false
 	}
 
-	return &downloader.Item{
+	return &Media{
 		InputFileLoc: &tg.InputDocumentFileLocation{
 			ID:            d.ID,
 			AccessHash:    d.AccessHash,

pkg/tmedia/media.go

@@ -2,11 +2,16 @@ package tmedia
 
 import (
 	"github.com/gotd/td/tg"
-
-	"github.com/iyear/tdl/pkg/downloader"
 )
 
-func GetMedia(msg tg.MessageClass) (*downloader.Item, bool) {
+type Media struct {
+	InputFileLoc tg.InputFileLocationClass
+	Name         string
+	Size         int64
+	DC           int
+}
+
+func GetMedia(msg tg.MessageClass) (*Media, bool) {
 	mm, ok := msg.(*tg.Message)
 	if !ok {
 		return nil, false

pkg/tmedia/photo.go

@@ -4,11 +4,9 @@ import (
 	"strconv"
 
 	"github.com/gotd/td/tg"
-
-	"github.com/iyear/tdl/pkg/downloader"
 )
 
-func GetPhotoInfo(photo *tg.MessageMediaPhoto) (*downloader.Item, bool) {
+func GetPhotoInfo(photo *tg.MessageMediaPhoto) (*Media, bool) {
 	p, ok := photo.Photo.(*tg.Photo)
 	if !ok {
 		return nil, false
@@ -18,7 +16,7 @@ func GetPhotoInfo(photo *tg.MessageMediaPhoto) (*downloader.Item, bool) {
 	if !ok {
 		return nil, false
 	}
-	return &downloader.Item{
+	return &Media{
 		InputFileLoc: &tg.InputPhotoFileLocation{
 			ID:            p.ID,
 			AccessHash:    p.AccessHash,