add storage interface, fix all references

src/server/auth/middleware.go

@@ -14,7 +14,7 @@ type Middleware struct {
 	Password string
 	BasePath string
 	Public   []string
-	DB       *storage.Storage
+	DB       storage.Storage
 }
 
 func (m *Middleware) Handler(c *router.Context) {

src/server/fever.go

@@ -14,6 +14,7 @@ import (
 	"github.com/nkanaev/yarr/src/server/auth"
 	"github.com/nkanaev/yarr/src/server/router"
 	"github.com/nkanaev/yarr/src/storage"
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
 type FeverGroup struct {
@@ -61,7 +62,7 @@ func writeFeverJSON(c *router.Context, data map[string]any, lastRefreshed int64)
 	c.JSON(http.StatusOK, data)
 }
 
-func getLastRefreshedOnTime(feedStates []storage.FeedState) int64 {
+func getLastRefreshedOnTime(feedStates []model.FeedState) int64 {
 	var lastRefreshed int64
 	for _, state := range feedStates {
 		if state.LastRefreshed.Unix() > lastRefreshed {
@@ -140,7 +141,7 @@ func joinInts(values []int64) string {
 	return result.String()
 }
 
-func feedGroups(db *storage.Storage) []*FeverFeedsGroup {
+func feedGroups(db storage.Storage) []*FeverFeedsGroup {
 	feeds := db.ListFeeds()
 
 	groupFeeds := make(map[int64][]int64)
@@ -176,7 +177,7 @@ func (s *Server) feverGroupsHandler(c *router.Context) {
 func (s *Server) feverFeedsHandler(c *router.Context) {
 	feeds := s.db.ListFeeds()
 	states, _ := s.db.ListFeedStates()
-	statesMap := make(map[int64]storage.FeedState)
+	statesMap := make(map[int64]model.FeedState)
 	for _, state := range states {
 		statesMap[state.FeedID] = state
 	}
@@ -230,7 +231,7 @@ func (s *Server) feverFaviconsHandler(c *router.Context) {
 const listLimit = 50
 
 func (s *Server) feverItemsHandler(c *router.Context) {
-	filter := storage.ItemFilter{}
+	filter := model.ItemFilter{}
 	query := c.Req.URL.Query()
 
 	switch {
@@ -262,11 +263,11 @@ func (s *Server) feverItemsHandler(c *router.Context) {
 		time := date.Unix()
 
 		isSaved := 0
-		if item.Status == storage.STARRED {
+		if item.Status == model.STARRED {
 			isSaved = 1
 		}
 		isRead := 0
-		if item.Status == storage.READ {
+		if item.Status == model.READ {
 			isRead = 1
 		}
 		feverItems[i] = FeverItem{
@@ -299,10 +300,10 @@ func (s *Server) feverLinksHandler(c *router.Context) {
 }
 
 func (s *Server) feverUnreadItemIDsHandler(c *router.Context) {
-	status := storage.UNREAD
+	status := model.UNREAD
 	itemIds := make([]int64, 0)
 
-	itemFilter := storage.ItemFilter{
+	itemFilter := model.ItemFilter{
 		Status: &status,
 	}
 	for {
@@ -322,10 +323,10 @@ func (s *Server) feverUnreadItemIDsHandler(c *router.Context) {
 }
 
 func (s *Server) feverSavedItemIDsHandler(c *router.Context) {
-	status := storage.STARRED
+	status := model.STARRED
 	itemIds := make([]int64, 0)
 
-	itemFilter := storage.ItemFilter{
+	itemFilter := model.ItemFilter{
 		Status: &status,
 	}
 	for {
@@ -353,16 +354,16 @@ func (s *Server) feverMarkHandler(c *router.Context) {
 
 	switch c.Req.Form.Get("mark") {
 	case "item":
-		var status storage.ItemStatus
+		var status model.ItemStatus
 		switch c.Req.Form.Get("as") {
 		case "read":
-			status = storage.READ
+			status = model.READ
 		case "unread":
-			status = storage.UNREAD
+			status = model.UNREAD
 		case "saved":
-			status = storage.STARRED
+			status = model.STARRED
 		case "unsaved":
-			status = storage.READ
+			status = model.READ
 		default:
 			c.Out.WriteHeader(http.StatusBadRequest)
 			return
@@ -372,7 +373,7 @@ func (s *Server) feverMarkHandler(c *router.Context) {
 		if c.Req.Form.Get("as") != "read" {
 			c.Out.WriteHeader(http.StatusBadRequest)
 		}
-		markFilter := storage.MarkFilter{FeedID: &id}
+		markFilter := model.MarkFilter{FeedID: &id}
 		x, _ := strconv.ParseInt(c.Req.Form.Get("before"), 10, 64)
 		if x > 0 {
 			before := time.Unix(x, 0).UTC()
@@ -383,7 +384,7 @@ func (s *Server) feverMarkHandler(c *router.Context) {
 		if c.Req.Form.Get("as") != "read" {
 			c.Out.WriteHeader(http.StatusBadRequest)
 		}
-		markFilter := storage.MarkFilter{}
+		markFilter := model.MarkFilter{}
 		if id > 0 {
 			markFilter.FolderID = &id
 		}

src/server/forms.go

@@ -1,9 +1,9 @@
 package server
 
-import "github.com/nkanaev/yarr/src/storage"
+import "github.com/nkanaev/yarr/src/storage/model"
 
 type ItemUpdateForm struct {
-	Status *storage.ItemStatus `json:"status,omitempty"`
+	Status *model.ItemStatus `json:"status,omitempty"`
 }
 
 type FolderCreateForm struct {

src/server/routes.go

@@ -20,7 +20,7 @@ import (
 	"github.com/nkanaev/yarr/src/server/gzip"
 	"github.com/nkanaev/yarr/src/server/opml"
 	"github.com/nkanaev/yarr/src/server/router"
-	"github.com/nkanaev/yarr/src/storage"
+	"github.com/nkanaev/yarr/src/storage/model"
 	"github.com/nkanaev/yarr/src/worker"
 )
 
@@ -141,7 +141,7 @@ func (s *Server) handleFolder(c *router.Context) {
 			c.Out.WriteHeader(http.StatusBadRequest)
 			return
 		}
-		s.db.UpdateFolder(id, storage.UpdateFolderParams{
+		s.db.UpdateFolder(id, model.UpdateFolderParams{
 			Title:      body.Title,
 			IsExpanded: body.IsExpanded,
 		})
@@ -248,7 +248,7 @@ func (s *Server) handleFeedList(c *router.Context) {
 				map[string]any{"status": "multiple", "choice": result.Sources},
 			)
 		case result.Feed != nil:
-			feed := s.db.CreateFeed(storage.CreateFeedParams{
+			feed := s.db.CreateFeed(model.CreateFeedParams{
 				Title:    result.Feed.Title,
 				Link:     result.Feed.SiteURL,
 				FeedLink: result.FeedLink,
@@ -288,7 +288,7 @@ func (s *Server) handleFeed(c *router.Context) {
 			c.Out.WriteHeader(http.StatusBadRequest)
 			return
 		}
-		params := storage.UpdateFeedParams{}
+		params := model.UpdateFeedParams{}
 		if title, ok := body["title"]; ok {
 			if reflect.TypeOf(title).Kind() == reflect.String {
 				t := title.(string)
@@ -297,10 +297,10 @@ func (s *Server) handleFeed(c *router.Context) {
 		}
 		if f_id, ok := body["folder_id"]; ok {
 			if f_id == nil {
-				params.FolderID = storage.SetNullable[int64](nil)
+				params.FolderID = model.SetNullable[int64](nil)
 			} else if reflect.TypeOf(f_id).Kind() == reflect.Float64 {
 				folderId := int64(f_id.(float64))
-				params.FolderID = storage.SetNullable(&folderId)
+				params.FolderID = model.SetNullable(&folderId)
 			}
 		}
 		if link, ok := body["feed_link"]; ok {
@@ -366,7 +366,7 @@ func (s *Server) handleItemList(c *router.Context) {
 		perPage := 20
 		query := c.Req.URL.Query()
 
-		filter := storage.ItemFilter{}
+		filter := model.ItemFilter{}
 		if folderID, err := c.QueryInt64("folder_id"); err == nil {
 			filter.FolderID = &folderID
 		}
@@ -377,7 +377,7 @@ func (s *Server) handleItemList(c *router.Context) {
 			filter.After = &after
 		}
 		if status := query.Get("status"); len(status) != 0 {
-			statusValue := storage.StatusValues[status]
+			statusValue := model.StatusValues[status]
 			filter.Status = &statusValue
 		}
 		if search := query.Get("search"); len(search) != 0 {
@@ -403,7 +403,7 @@ func (s *Server) handleItemList(c *router.Context) {
 			"has_more": hasMore,
 		})
 	} else if c.Req.Method == "PUT" {
-		filter := storage.MarkFilter{}
+		filter := model.MarkFilter{}
 
 		if folderID, err := c.QueryInt64("folder_id"); err == nil {
 			filter.FolderID = &folderID
@@ -422,7 +422,7 @@ func (s *Server) handleSettings(c *router.Context) {
 	if c.Req.Method == "GET" {
 		c.JSON(http.StatusOK, s.db.GetSettings())
 	} else if c.Req.Method == "PUT" {
-		var params storage.UpdateSettingsParams
+		var params model.UpdateSettingsParams
 		if err := json.NewDecoder(c.Req.Body).Decode(&params); err != nil {
 			c.Out.WriteHeader(http.StatusBadRequest)
 			return
@@ -452,7 +452,7 @@ func (s *Server) handleOPMLImport(c *router.Context) {
 			return
 		}
 		for _, f := range doc.Feeds {
-			s.db.CreateFeed(storage.CreateFeedParams{
+			s.db.CreateFeed(model.CreateFeedParams{
 				Title:    f.Title,
 				Link:     f.SiteUrl,
 				FeedLink: f.FeedUrl,
@@ -461,7 +461,7 @@ func (s *Server) handleOPMLImport(c *router.Context) {
 		for _, f := range doc.Folders {
 			folder := s.db.CreateFolder(f.Title)
 			for _, ff := range f.AllFeeds() {
-				s.db.CreateFeed(storage.CreateFeedParams{
+				s.db.CreateFeed(model.CreateFeedParams{
 					Title:    ff.Title,
 					Link:     ff.SiteUrl,
 					FeedLink: ff.FeedUrl,
@@ -485,7 +485,7 @@ func (s *Server) handleOPMLExport(c *router.Context) {
 
 		doc := opml.Folder{}
 
-		feedsByFolderID := make(map[int64][]*storage.Feed)
+		feedsByFolderID := make(map[int64][]*model.Feed)
 		for _, feed := range s.db.ListFeeds() {
 			if feed.FolderId == nil {
 				doc.Feeds = append(doc.Feeds, opml.Feed{

src/server/routes_test.go

@@ -11,6 +11,7 @@ import (
 	"testing"
 
 	"github.com/nkanaev/yarr/src/storage"
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
 func TestStatic(t *testing.T) {
@@ -79,8 +80,8 @@ func TestFeedIcons(t *testing.T) {
 	log.SetOutput(io.Discard)
 	db, _ := storage.New(":memory:")
 	icon := []byte("test")
-	feed := db.CreateFeed(storage.CreateFeedParams{})
-	db.UpdateFeed(feed.Id, storage.UpdateFeedParams{Icon: storage.SetNullable(&icon)})
+	feed := db.CreateFeed(model.CreateFeedParams{})
+	db.UpdateFeed(feed.Id, model.UpdateFeedParams{Icon: model.SetNullable(&icon)})
 	log.SetOutput(os.Stderr)
 
 	recorder := httptest.NewRecorder()

src/server/server.go

@@ -14,7 +14,7 @@ import (
 
 type Server struct {
 	Addr        string
-	db          *storage.Storage
+	db          storage.Storage
 	worker      *worker.Worker
 	cache       map[string]any
 	cache_mutex *sync.Mutex
@@ -29,7 +29,7 @@ type Server struct {
 	KeyFile  string
 }
 
-func NewServer(db *storage.Storage, addr string) *Server {
+func NewServer(db storage.Storage, addr string) *Server {
 	return &Server{
 		db:          db,
 		Addr:        addr,

src/storage/model/model.go

@@ -0,0 +1,188 @@
+package model
+
+import (
+	"encoding/json"
+	"time"
+)
+
+type Feed struct {
+	Id          int64   `json:"id"`
+	FolderId    *int64  `json:"folder_id"`
+	Title       string  `json:"title"`
+	Description string  `json:"description"`
+	Link        string  `json:"link"`
+	FeedLink    string  `json:"feed_link"`
+	Icon        *[]byte `json:"icon,omitempty"`
+	HasIcon     bool    `json:"has_icon"`
+}
+
+type CreateFeedParams struct {
+	Title       string
+	Description string
+	Link        string
+	FeedLink    string
+	FolderID    *int64
+}
+
+type Item struct {
+	Id         int64      `json:"id"`
+	GUID       string     `json:"guid"`
+	FeedId     int64      `json:"feed_id"`
+	Title      string     `json:"title"`
+	Link       string     `json:"link"`
+	Content    string     `json:"content,omitempty"`
+	Date       time.Time  `json:"date"`
+	Status     ItemStatus `json:"status"`
+	MediaLinks MediaLinks `json:"media_links"`
+}
+
+type ItemStatus int
+
+const (
+	UNREAD  ItemStatus = 0
+	READ    ItemStatus = 1
+	STARRED ItemStatus = 2
+)
+
+
+var StatusRepresentations = map[ItemStatus]string{
+	UNREAD:  "unread",
+	READ:    "read",
+	STARRED: "starred",
+}
+
+var StatusValues = map[string]ItemStatus{
+	"unread":  UNREAD,
+	"read":    READ,
+	"starred": STARRED,
+}
+
+func (s ItemStatus) MarshalJSON() ([]byte, error) {
+	return json.Marshal(StatusRepresentations[s])
+}
+
+func (s *ItemStatus) UnmarshalJSON(b []byte) error {
+	var str string
+	if err := json.Unmarshal(b, &str); err != nil {
+		return err
+	}
+	*s = StatusValues[str]
+	return nil
+}
+
+type MediaLink struct {
+	URL         string `json:"url"`
+	Type        string `json:"type"`
+	Description string `json:"description,omitempty"`
+}
+
+type MediaLinks []MediaLink
+
+type ItemFilter struct {
+	FolderID *int64
+	FeedID   *int64
+	Status   *ItemStatus
+	Search   *string
+	After    *int64
+	IDs      *[]int64
+	SinceID  *int64
+	MaxID    *int64
+	Before   *time.Time
+}
+
+type MarkFilter struct {
+	FolderID *int64
+	FeedID   *int64
+
+	Before *time.Time
+}
+
+type Folder struct {
+	Id         int64  `json:"id"`
+	Title      string `json:"title"`
+	IsExpanded bool   `json:"is_expanded"`
+}
+
+type UpdateFolderParams struct {
+	Title      *string
+	IsExpanded *bool
+}
+
+type FeedStat struct {
+	FeedId       int64 `json:"feed_id"`
+	UnreadCount  int64 `json:"unread"`
+	StarredCount int64 `json:"starred"`
+}
+
+
+type Settings struct {
+	Filter          string `json:"filter"`
+	Feed            string `json:"feed"`
+	FeedListWidth   int    `json:"feed_list_width"`
+	ItemListWidth   int    `json:"item_list_width"`
+	SortNewestFirst bool   `json:"sort_newest_first"`
+	ThemeName       string `json:"theme_name"`
+	ThemeFont       string `json:"theme_font"`
+	ThemeSize       int    `json:"theme_size"`
+	RefreshRate     int64  `json:"refresh_rate"`
+	Language        string `json:"language"`
+}
+
+type UpdateSettingsParams struct {
+	Filter          *string `json:"filter"`
+	Feed            *string `json:"feed"`
+	FeedListWidth   *int    `json:"feed_list_width"`
+	ItemListWidth   *int    `json:"item_list_width"`
+	SortNewestFirst *bool   `json:"sort_newest_first"`
+	ThemeName       *string `json:"theme_name"`
+	ThemeFont       *string `json:"theme_font"`
+	ThemeSize       *int    `json:"theme_size"`
+	RefreshRate     *int64  `json:"refresh_rate"`
+	Language        *string `json:"language"`
+}
+
+func (s Settings) Map() map[string]any {
+	return map[string]any{
+		"filter":            s.Filter,
+		"feed":              s.Feed,
+		"feed_list_width":   s.FeedListWidth,
+		"item_list_width":   s.ItemListWidth,
+		"sort_newest_first": s.SortNewestFirst,
+		"theme_name":        s.ThemeName,
+		"theme_font":        s.ThemeFont,
+		"theme_size":        s.ThemeSize,
+		"refresh_rate":      s.RefreshRate,
+		"language":          s.Language,
+	}
+}
+
+type FeedState struct {
+	FeedID           int64
+	LastRefreshed    time.Time
+	LastError        string
+	HTTPLastModified string
+	HTTPEtag         string
+}
+
+type UpdateFeedStateParams struct {
+	LastRefreshed    *time.Time
+	LastError        *string
+	HTTPLastModified *string
+	HTTPEtag         *string
+}
+
+type UpdateFeedParams struct {
+	Title    *string
+	FeedLink *string
+	FolderID Nullable[int64]
+	Icon     Nullable[[]byte]
+}
+
+type Nullable[T any] struct {
+	Set   bool
+	Value *T
+}
+
+func SetNullable[T any](v *T) Nullable[T] {
+	return Nullable[T]{Set: true, Value: v}
+}

src/storage/sqlite/feed.go

@@ -1,30 +1,13 @@
-package storage
+package sqlite
 
 import (
 	"database/sql"
 	"log"
+
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
-type Feed struct {
-	Id          int64   `json:"id"`
-	FolderId    *int64  `json:"folder_id"`
-	Title       string  `json:"title"`
-	Description string  `json:"description"`
-	Link        string  `json:"link"`
-	FeedLink    string  `json:"feed_link"`
-	Icon        *[]byte `json:"icon,omitempty"`
-	HasIcon     bool    `json:"has_icon"`
-}
-
-type CreateFeedParams struct {
-	Title       string
-	Description string
-	Link        string
-	FeedLink    string
-	FolderID    *int64
-}
-
-func (s *Storage) CreateFeed(params CreateFeedParams) *Feed {
+func (s *SQLiteStorage) CreateFeed(params model.CreateFeedParams) *model.Feed {
 	title := params.Title
 	if title == "" {
 		title = params.FeedLink
@@ -47,7 +30,7 @@ func (s *Storage) CreateFeed(params CreateFeedParams) *Feed {
 		log.Print(err)
 		return nil
 	}
-	return &Feed{
+	return &model.Feed{
 		Id:          id,
 		Title:       title,
 		Description: params.Description,
@@ -57,7 +40,7 @@ func (s *Storage) CreateFeed(params CreateFeedParams) *Feed {
 	}
 }
 
-func (s *Storage) DeleteFeed(feedId int64) bool {
+func (s *SQLiteStorage) DeleteFeed(feedId int64) bool {
 	result, err := s.db.Exec(`delete from feeds where id = :id`, sql.Named("id", feedId))
 	if err != nil {
 		log.Print(err)
@@ -73,14 +56,7 @@ func (s *Storage) DeleteFeed(feedId int64) bool {
 	return nrows == 1
 }
 
-type UpdateFeedParams struct {
-	Title    *string
-	FeedLink *string
-	FolderID Nullable[int64]
-	Icon     Nullable[[]byte]
-}
-
-func (s *Storage) UpdateFeed(feedId int64, params UpdateFeedParams) (bool, error) {
+func (s *SQLiteStorage) UpdateFeed(feedId int64, params model.UpdateFeedParams) (bool, error) {
 	_, err := s.db.Exec(`
 		update feeds set
 			title     = coalesce(:title, title),
@@ -104,8 +80,8 @@ func (s *Storage) UpdateFeed(feedId int64, params UpdateFeedParams) (bool, error
 	return true, nil
 }
 
-func (s *Storage) ListFeeds() []Feed {
-	result := make([]Feed, 0)
+func (s *SQLiteStorage) ListFeeds() []model.Feed {
+	result := make([]model.Feed, 0)
 	rows, err := s.db.Query(`
 		select id, folder_id, title, description, link, feed_link,
 		       ifnull(length(icon), 0) > 0 as has_icon
@@ -117,7 +93,7 @@ func (s *Storage) ListFeeds() []Feed {
 		return result
 	}
 	for rows.Next() {
-		var f Feed
+		var f model.Feed
 		err = rows.Scan(
 			&f.Id,
 			&f.FolderId,
@@ -136,8 +112,8 @@ func (s *Storage) ListFeeds() []Feed {
 	return result
 }
 
-func (s *Storage) GetFeed(id int64) *Feed {
-	var f Feed
+func (s *SQLiteStorage) GetFeed(id int64) *model.Feed {
+	var f model.Feed
 	err := s.db.QueryRow(`
 		select
 			id, folder_id, title, link, feed_link,

src/storage/sqlite/feed_test.go

@@ -1,13 +1,15 @@
-package storage
+package sqlite
 
 import (
 	"reflect"
 	"testing"
+
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
 func TestCreateFeed(t *testing.T) {
 	db := testDB()
-	feed1 := db.CreateFeed(CreateFeedParams{Title: "title", Link: "http://example.com", FeedLink: "http://example.com/feed.xml"})
+	feed1 := db.CreateFeed(model.CreateFeedParams{Title: "title", Link: "http://example.com", FeedLink: "http://example.com/feed.xml"})
 	if feed1 == nil || feed1.Id == 0 {
 		t.Fatal("expected feed")
 	}
@@ -19,16 +21,16 @@ func TestCreateFeed(t *testing.T) {
 
 func TestCreateFeedSameLink(t *testing.T) {
 	db := testDB()
-	feed1 := db.CreateFeed(CreateFeedParams{Title: "title", FeedLink: "http://example1.com/feed.xml"})
+	feed1 := db.CreateFeed(model.CreateFeedParams{Title: "title", FeedLink: "http://example1.com/feed.xml"})
 	if feed1 == nil || feed1.Id == 0 {
 		t.Fatal("expected feed")
 	}
 
 	for range 10 {
-		db.CreateFeed(CreateFeedParams{Title: "title", FeedLink: "http://example2.com/feed.xml"})
+		db.CreateFeed(model.CreateFeedParams{Title: "title", FeedLink: "http://example2.com/feed.xml"})
 	}
 
-	feed2 := db.CreateFeed(CreateFeedParams{Title: "title", Link: "http://example.com", FeedLink: "http://example1.com/feed.xml"})
+	feed2 := db.CreateFeed(model.CreateFeedParams{Title: "title", Link: "http://example.com", FeedLink: "http://example1.com/feed.xml"})
 	if feed1.Id != feed2.Id {
 		t.Fatalf("expected the same feed.\nwant: %#v\nhave: %#v", feed1, feed2)
 	}
@@ -40,25 +42,25 @@ func TestReadFeed(t *testing.T) {
 		t.Fatal("cannot get nonexistent feed")
 	}
 
-	feed1 := db.CreateFeed(CreateFeedParams{Title: "feed 1", Link: "http://example1.com", FeedLink: "http://example1.com/feed.xml"})
-	feed2 := db.CreateFeed(CreateFeedParams{Title: "feed 2", Link: "http://example2.com", FeedLink: "http://example2.com/feed.xml"})
+	feed1 := db.CreateFeed(model.CreateFeedParams{Title: "feed 1", Link: "http://example1.com", FeedLink: "http://example1.com/feed.xml"})
+	feed2 := db.CreateFeed(model.CreateFeedParams{Title: "feed 2", Link: "http://example2.com", FeedLink: "http://example2.com/feed.xml"})
 	feeds := db.ListFeeds()
-	if !reflect.DeepEqual(feeds, []Feed{*feed1, *feed2}) {
+	if !reflect.DeepEqual(feeds, []model.Feed{*feed1, *feed2}) {
 		t.Fatalf("invalid feed list: %#v", feeds)
 	}
 }
 
 func TestUpdateFeed(t *testing.T) {
 	db := testDB()
-	feed1 := db.CreateFeed(CreateFeedParams{Title: "feed 1", Link: "http://example1.com", FeedLink: "http://example1.com/feed.xml"})
+	feed1 := db.CreateFeed(model.CreateFeedParams{Title: "feed 1", Link: "http://example1.com", FeedLink: "http://example1.com/feed.xml"})
 	folder := db.CreateFolder("test")
 	icon := []byte("icon")
 
 	title := "newtitle"
-	db.UpdateFeed(feed1.Id, UpdateFeedParams{
+	db.UpdateFeed(feed1.Id, model.UpdateFeedParams{
 		Title:    &title,
-		FolderID: SetNullable(&folder.Id),
-		Icon:     SetNullable(&icon),
+		FolderID: model.SetNullable(&folder.Id),
+		Icon:     model.SetNullable(&icon),
 	})
 
 	feed2 := db.GetFeed(feed1.Id)
@@ -75,7 +77,7 @@ func TestUpdateFeed(t *testing.T) {
 
 func TestDeleteFeed(t *testing.T) {
 	db := testDB()
-	feed1 := db.CreateFeed(CreateFeedParams{Title: "title", Link: "http://example.com", FeedLink: "http://example.com/feed.xml"})
+	feed1 := db.CreateFeed(model.CreateFeedParams{Title: "title", Link: "http://example.com", FeedLink: "http://example.com/feed.xml"})
 
 	if db.DeleteFeed(100500) {
 		t.Error("cannot delete what does not exist")

src/storage/sqlite/feedstate.go

@@ -1,19 +1,12 @@
-package storage
+package sqlite
 
 import (
 	"database/sql"
-	"time"
+
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
-type FeedState struct {
-	FeedID           int64
-	LastRefreshed    time.Time
-	LastError        string
-	HTTPLastModified string
-	HTTPEtag         string
-}
-
-func (s *Storage) ListFeedStates() ([]FeedState, error) {
+func (s *SQLiteStorage) ListFeedStates() ([]model.FeedState, error) {
 	rows, err := s.db.Query(`
 		select
 			feed_id
@@ -28,9 +21,9 @@ func (s *Storage) ListFeedStates() ([]FeedState, error) {
 	}
 	defer rows.Close()
 
-	states := make([]FeedState, 0)
+	states := make([]model.FeedState, 0)
 	for rows.Next() {
-		var state FeedState
+		var state model.FeedState
 		err := rows.Scan(
 			&state.FeedID,
 			&state.LastRefreshed,
@@ -46,8 +39,8 @@ func (s *Storage) ListFeedStates() ([]FeedState, error) {
 	return states, nil
 }
 
-func (s *Storage) GetFeedState(feedID int64) (*FeedState, error) {
-	var state FeedState
+func (s *SQLiteStorage) GetFeedState(feedID int64) (*model.FeedState, error) {
+	var state model.FeedState
 	err := s.db.QueryRow(`
 		select
 			feed_id
@@ -72,14 +65,7 @@ func (s *Storage) GetFeedState(feedID int64) (*FeedState, error) {
 	return &state, nil
 }
 
-type UpdateFeedStateParams struct {
-	LastRefreshed    *time.Time
-	LastError        *string
-	HTTPLastModified *string
-	HTTPEtag         *string
-}
-
-func (s *Storage) UpdateFeedState(feedID int64, params UpdateFeedStateParams) (bool, error) {
+func (s *SQLiteStorage) UpdateFeedState(feedID int64, params model.UpdateFeedStateParams) (bool, error) {
 	lastError := params.LastError
 	if lastError != nil && *lastError == "" {
 		lastError = nil

src/storage/sqlite/feedstate_test.go

@@ -1,22 +1,24 @@
-package storage
+package sqlite
 
 import (
 	"testing"
 	"time"
+
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
 func TestUpdateFeedState_Full(t *testing.T) {
 	s := testDB()
 	defer s.Close()
 
-	f := s.CreateFeed(CreateFeedParams{Title: "Test", FeedLink: "http://example.com"})
+	f := s.CreateFeed(model.CreateFeedParams{Title: "Test", FeedLink: "http://example.com"})
 
 	now := time.Now().UTC().Truncate(time.Second)
 	errMsg := "error"
 	lmod := "today"
 	etag := "v1"
 
-	ok, err := s.UpdateFeedState(f.Id, UpdateFeedStateParams{
+	ok, err := s.UpdateFeedState(f.Id, model.UpdateFeedStateParams{
 		LastRefreshed:    &now,
 		LastError:        &errMsg,
 		HTTPLastModified: &lmod,
@@ -54,12 +56,12 @@ func TestUpdateFeedState_Partial(t *testing.T) {
 	s := testDB()
 	defer s.Close()
 
-	f := s.CreateFeed(CreateFeedParams{Title: "Test", FeedLink: "http://example.com"})
+	f := s.CreateFeed(model.CreateFeedParams{Title: "Test", FeedLink: "http://example.com"})
 	etag := "v1"
-	s.UpdateFeedState(f.Id, UpdateFeedStateParams{HTTPEtag: &etag})
+	s.UpdateFeedState(f.Id, model.UpdateFeedStateParams{HTTPEtag: &etag})
 
 	newErr := "new error"
-	_, err := s.UpdateFeedState(f.Id, UpdateFeedStateParams{
+	_, err := s.UpdateFeedState(f.Id, model.UpdateFeedStateParams{
 		LastError: &newErr,
 	})
 	if err != nil {
@@ -82,12 +84,12 @@ func TestUpdateFeedState_ClearError(t *testing.T) {
 	s := testDB()
 	defer s.Close()
 
-	f := s.CreateFeed(CreateFeedParams{Title: "Test", FeedLink: "http://example.com"})
+	f := s.CreateFeed(model.CreateFeedParams{Title: "Test", FeedLink: "http://example.com"})
 	errMsg := "error"
-	s.UpdateFeedState(f.Id, UpdateFeedStateParams{LastError: &errMsg})
+	s.UpdateFeedState(f.Id, model.UpdateFeedStateParams{LastError: &errMsg})
 
 	empty := ""
-	_, err := s.UpdateFeedState(f.Id, UpdateFeedStateParams{
+	_, err := s.UpdateFeedState(f.Id, model.UpdateFeedStateParams{
 		LastError: &empty,
 	})
 	if err != nil {
@@ -107,12 +109,12 @@ func TestListFeedStates(t *testing.T) {
 	s := testDB()
 	defer s.Close()
 
-	f1 := s.CreateFeed(CreateFeedParams{Title: "F1", FeedLink: "L1"})
-	f2 := s.CreateFeed(CreateFeedParams{Title: "F2", FeedLink: "L2"})
+	f1 := s.CreateFeed(model.CreateFeedParams{Title: "F1", FeedLink: "L1"})
+	f2 := s.CreateFeed(model.CreateFeedParams{Title: "F2", FeedLink: "L2"})
 
 	errMsg := "fail"
-	s.UpdateFeedState(f1.Id, UpdateFeedStateParams{LastError: &errMsg})
-	s.UpdateFeedState(f2.Id, UpdateFeedStateParams{HTTPEtag: ptr("e")})
+	s.UpdateFeedState(f1.Id, model.UpdateFeedStateParams{LastError: &errMsg})
+	s.UpdateFeedState(f2.Id, model.UpdateFeedStateParams{HTTPEtag: ptr("e")})
 
 	states, err := s.ListFeedStates()
 	if err != nil {

src/storage/sqlite/folder.go

@@ -1,17 +1,13 @@
-package storage
+package sqlite
 
 import (
 	"database/sql"
 	"log"
+
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
-type Folder struct {
-	Id         int64  `json:"id"`
-	Title      string `json:"title"`
-	IsExpanded bool   `json:"is_expanded"`
-}
-
-func (s *Storage) CreateFolder(title string) *Folder {
+func (s *SQLiteStorage) CreateFolder(title string) *model.Folder {
 	expanded := true
 	row := s.db.QueryRow(`
 		insert into folders (title, is_expanded) values (:title, :is_expanded)
@@ -27,10 +23,10 @@ func (s *Storage) CreateFolder(title string) *Folder {
 		log.Print(err)
 		return nil
 	}
-	return &Folder{Id: id, Title: title, IsExpanded: expanded}
+	return &model.Folder{Id: id, Title: title, IsExpanded: expanded}
 }
 
-func (s *Storage) DeleteFolder(folderId int64) bool {
+func (s *SQLiteStorage) DeleteFolder(folderId int64) bool {
 	_, err := s.db.Exec(`delete from folders where id = :id`, sql.Named("id", folderId))
 	if err != nil {
 		log.Print(err)
@@ -38,12 +34,7 @@ func (s *Storage) DeleteFolder(folderId int64) bool {
 	return err == nil
 }
 
-type UpdateFolderParams struct {
-	Title      *string
-	IsExpanded *bool
-}
-
-func (s *Storage) UpdateFolder(folderId int64, params UpdateFolderParams) (bool, error) {
+func (s *SQLiteStorage) UpdateFolder(folderId int64, params model.UpdateFolderParams) (bool, error) {
 	_, err := s.db.Exec(`
 		update folders set
 			title       = coalesce(:title, title),
@@ -61,8 +52,8 @@ func (s *Storage) UpdateFolder(folderId int64, params UpdateFolderParams) (bool,
 	return true, nil
 }
 
-func (s *Storage) ListFolders() []Folder {
-	result := make([]Folder, 0)
+func (s *SQLiteStorage) ListFolders() []model.Folder {
+	result := make([]model.Folder, 0)
 	rows, err := s.db.Query(`
 		select id, title, is_expanded
 		from folders
@@ -73,7 +64,7 @@ func (s *Storage) ListFolders() []Folder {
 		return result
 	}
 	for rows.Next() {
-		var f Folder
+		var f model.Folder
 		err = rows.Scan(&f.Id, &f.Title, &f.IsExpanded)
 		if err != nil {
 			log.Print(err)

src/storage/sqlite/folder_test.go

@@ -1,7 +1,9 @@
-package storage
+package sqlite
 
 import (
 	"testing"
+
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
 func TestUpdateFolder(t *testing.T) {
@@ -13,7 +15,7 @@ func TestUpdateFolder(t *testing.T) {
 
 	t.Run("rename only", func(t *testing.T) {
 		newTitle := "new title"
-		ok, err := db.UpdateFolder(folder.Id, UpdateFolderParams{
+		ok, err := db.UpdateFolder(folder.Id, model.UpdateFolderParams{
 			Title: &newTitle,
 		})
 		if !ok || err != nil {
@@ -31,7 +33,7 @@ func TestUpdateFolder(t *testing.T) {
 
 	t.Run("toggle expanded only", func(t *testing.T) {
 		isExpanded := false
-		ok, err := db.UpdateFolder(folder.Id, UpdateFolderParams{
+		ok, err := db.UpdateFolder(folder.Id, model.UpdateFolderParams{
 			IsExpanded: &isExpanded,
 		})
 		if !ok || err != nil {
@@ -50,7 +52,7 @@ func TestUpdateFolder(t *testing.T) {
 	t.Run("update both", func(t *testing.T) {
 		bothTitle := "both"
 		isExpanded := true
-		ok, err := db.UpdateFolder(folder.Id, UpdateFolderParams{
+		ok, err := db.UpdateFolder(folder.Id, model.UpdateFolderParams{
 			Title:      &bothTitle,
 			IsExpanded: &isExpanded,
 		})
@@ -65,7 +67,7 @@ func TestUpdateFolder(t *testing.T) {
 	})
 
 	t.Run("update none", func(t *testing.T) {
-		ok, err := db.UpdateFolder(folder.Id, UpdateFolderParams{})
+		ok, err := db.UpdateFolder(folder.Id, model.UpdateFolderParams{})
 		if !ok || err != nil {
 			t.Fatalf("UpdateFolder failed: %v", err)
 		}

src/storage/sqlite/item.go

@@ -1,56 +1,20 @@
-package storage
+package sqlite
 
 import (
+	"cmp"
 	"database/sql"
 	"database/sql/driver"
 	"encoding/json"
 	"fmt"
 	"log"
-	"sort"
+	"slices"
 	"strings"
 	"time"
+
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
-type ItemStatus int
-
-const (
-	UNREAD  ItemStatus = 0
-	READ    ItemStatus = 1
-	STARRED ItemStatus = 2
-)
-
-var StatusRepresentations = map[ItemStatus]string{
-	UNREAD:  "unread",
-	READ:    "read",
-	STARRED: "starred",
-}
-
-var StatusValues = map[string]ItemStatus{
-	"unread":  UNREAD,
-	"read":    READ,
-	"starred": STARRED,
-}
-
-func (s ItemStatus) MarshalJSON() ([]byte, error) {
-	return json.Marshal(StatusRepresentations[s])
-}
-
-func (s *ItemStatus) UnmarshalJSON(b []byte) error {
-	var str string
-	if err := json.Unmarshal(b, &str); err != nil {
-		return err
-	}
-	*s = StatusValues[str]
-	return nil
-}
-
-type MediaLink struct {
-	URL         string `json:"url"`
-	Type        string `json:"type"`
-	Description string `json:"description,omitempty"`
-}
-
-type MediaLinks []MediaLink
+type MediaLinks model.MediaLinks
 
 func (m *MediaLinks) Scan(src any) error {
 	switch data := src.(type) {
@@ -67,56 +31,7 @@ func (m MediaLinks) Value() (driver.Value, error) {
 	return json.Marshal(m)
 }
 
-type Item struct {
-	Id         int64      `json:"id"`
-	GUID       string     `json:"guid"`
-	FeedId     int64      `json:"feed_id"`
-	Title      string     `json:"title"`
-	Link       string     `json:"link"`
-	Content    string     `json:"content,omitempty"`
-	Date       time.Time  `json:"date"`
-	Status     ItemStatus `json:"status"`
-	MediaLinks MediaLinks `json:"media_links"`
-}
-
-type ItemFilter struct {
-	FolderID *int64
-	FeedID   *int64
-	Status   *ItemStatus
-	Search   *string
-	After    *int64
-	IDs      *[]int64
-	SinceID  *int64
-	MaxID    *int64
-	Before   *time.Time
-}
-
-type MarkFilter struct {
-	FolderID *int64
-	FeedID   *int64
-
-	Before *time.Time
-}
-
-type ItemList []Item
-
-func (list ItemList) Len() int {
-	return len(list)
-}
-
-func (list ItemList) SortKey(i int) string {
-	return list[i].Date.Format(time.RFC3339) + "::" + list[i].GUID
-}
-
-func (list ItemList) Less(i, j int) bool {
-	return list.SortKey(i) < list.SortKey(j)
-}
-
-func (list ItemList) Swap(i, j int) {
-	list[i], list[j] = list[j], list[i]
-}
-
-func (s *Storage) CreateItems(items []Item) bool {
+func (s *SQLiteStorage) CreateItems(items []model.Item) bool {
 	tx, err := s.db.Begin()
 	if err != nil {
 		log.Print(err)
@@ -125,10 +40,13 @@ func (s *Storage) CreateItems(items []Item) bool {
 
 	now := time.Now().UTC()
 
-	itemsSorted := ItemList(items)
-	sort.Sort(itemsSorted)
+	slices.SortStableFunc(items, func(a, b model.Item) int {
+		sa := a.Date.Format(time.RFC3339) + "::" + a.GUID
+		sb := b.Date.Format(time.RFC3339) + "::" + b.GUID
+		return cmp.Compare(sa, sb)
+	})
 
-	for _, item := range itemsSorted {
+	for _, item := range items {
 		_, err = tx.Exec(`
 			insert into items (
 				guid, feed_id, title, link, date,
@@ -148,10 +66,10 @@ func (s *Storage) CreateItems(items []Item) bool {
 			sql.Named("link", item.Link),
 			sql.Named("date", item.Date),
 			sql.Named("content", item.Content),
-			sql.Named("media_links", item.MediaLinks),
+			sql.Named("media_links", MediaLinks(item.MediaLinks)),
 			sql.Named("date_arrived", now),
 			sql.Named("last_arrived", now),
-			sql.Named("status", UNREAD),
+			sql.Named("status", model.UNREAD),
 		)
 		if err != nil {
 			log.Print(err)
@@ -169,7 +87,7 @@ func (s *Storage) CreateItems(items []Item) bool {
 	return true
 }
 
-func listQueryPredicate(filter ItemFilter, newestFirst bool) (string, []any) {
+func listQueryPredicate(filter model.ItemFilter, newestFirst bool) (string, []any) {
 	cond := make([]string, 0)
 	args := make([]any, 0)
 	if filter.FolderID != nil {
@@ -241,7 +159,7 @@ func listQueryPredicate(filter ItemFilter, newestFirst bool) (string, []any) {
 	return predicate, args
 }
 
-func (s *Storage) CountItems() int {
+func (s *SQLiteStorage) CountItems() int {
 	var count int
 	err := s.db.QueryRow(`select count(*) from items`).Scan(&count)
 	if err != nil {
@@ -251,14 +169,14 @@ func (s *Storage) CountItems() int {
 	return count
 }
 
-func (s *Storage) ListItems(
-	filter ItemFilter,
+func (s *SQLiteStorage) ListItems(
+	filter model.ItemFilter,
 	limit int,
 	newestFirst bool,
 	withContent bool,
-) []Item {
+) []model.Item {
 	predicate, args := listQueryPredicate(filter, newestFirst)
-	result := make([]Item, 0)
+	result := make([]model.Item, 0)
 
 	order := "date desc, id desc"
 	if !newestFirst {
@@ -290,11 +208,11 @@ func (s *Storage) ListItems(
 		return result
 	}
 	for rows.Next() {
-		var x Item
+		var x model.Item
 		err = rows.Scan(
 			&x.Id, &x.GUID, &x.FeedId,
 			&x.Title, &x.Link, &x.Date,
-			&x.Status, &x.MediaLinks, &x.Content,
+			&x.Status, (*MediaLinks)(&x.MediaLinks), &x.Content,
 		)
 		if err != nil {
 			log.Print(err)
@@ -305,8 +223,8 @@ func (s *Storage) ListItems(
 	return result
 }
 
-func (s *Storage) GetItem(id int64) *Item {
-	i := &Item{}
+func (s *SQLiteStorage) GetItem(id int64) *model.Item {
+	i := &model.Item{}
 	err := s.db.QueryRow(`
 		select
 			i.id, i.guid, i.feed_id, i.title, i.link, i.content,
@@ -315,7 +233,7 @@ func (s *Storage) GetItem(id int64) *Item {
 		where i.id = :id
 	`, sql.Named("id", id)).Scan(
 		&i.Id, &i.GUID, &i.FeedId, &i.Title, &i.Link, &i.Content,
-		&i.Date, &i.Status, &i.MediaLinks,
+		&i.Date, &i.Status, (*MediaLinks)(&i.MediaLinks),
 	)
 	if err != nil {
 		log.Print(err)
@@ -324,7 +242,7 @@ func (s *Storage) GetItem(id int64) *Item {
 	return i
 }
 
-func (s *Storage) UpdateItemStatus(item_id int64, status ItemStatus) bool {
+func (s *SQLiteStorage) UpdateItemStatus(item_id int64, status model.ItemStatus) bool {
 	_, err := s.db.Exec(`update items set status = :status where id = :id`,
 		sql.Named("status", status),
 		sql.Named("id", item_id),
@@ -332,8 +250,8 @@ func (s *Storage) UpdateItemStatus(item_id int64, status ItemStatus) bool {
 	return err == nil
 }
 
-func (s *Storage) MarkItemsRead(filter MarkFilter) bool {
-	predicate, args := listQueryPredicate(ItemFilter{
+func (s *SQLiteStorage) MarkItemsRead(filter model.MarkFilter) bool {
+	predicate, args := listQueryPredicate(model.ItemFilter{
 		FolderID: filter.FolderID,
 		FeedID:   filter.FeedID,
 		Before:   filter.Before,
@@ -341,7 +259,7 @@ func (s *Storage) MarkItemsRead(filter MarkFilter) bool {
 	query := fmt.Sprintf(`
 		update items as i set status = %d
 		where %s and i.status != %d
-		`, READ, predicate, STARRED)
+		`, model.READ, predicate, model.STARRED)
 	_, err := s.db.Exec(query, args...)
 	if err != nil {
 		log.Print(err)
@@ -349,14 +267,8 @@ func (s *Storage) MarkItemsRead(filter MarkFilter) bool {
 	return err == nil
 }
 
-type FeedStat struct {
-	FeedId       int64 `json:"feed_id"`
-	UnreadCount  int64 `json:"unread"`
-	StarredCount int64 `json:"starred"`
-}
-
-func (s *Storage) FeedStats() []FeedStat {
-	result := make([]FeedStat, 0)
+func (s *SQLiteStorage) FeedStats() []model.FeedStat {
+	result := make([]model.FeedStat, 0)
 	rows, err := s.db.Query(fmt.Sprintf(`
 		select
 			feed_id,
@@ -364,13 +276,13 @@ func (s *Storage) FeedStats() []FeedStat {
 			sum(case status when %d then 1 else 0 end)
 		from items
 		group by feed_id
-	`, UNREAD, STARRED))
+	`, model.UNREAD, model.STARRED))
 	if err != nil {
 		log.Print(err)
 		return result
 	}
 	for rows.Next() {
-		stat := FeedStat{}
+		stat := model.FeedStat{}
 		rows.Scan(&stat.FeedId, &stat.UnreadCount, &stat.StarredCount)
 		result = append(result, stat)
 	}
@@ -388,7 +300,7 @@ var (
 //   - Never delete starred entries.
 //   - Keep at least 50 latest items for each feed.
 //   - Delete entries older than 90 days relative to the latest arrived item in the same feed.
-func (s *Storage) DeleteOldItems() {
+func (s *SQLiteStorage) DeleteOldItems() {
 	result, err := s.db.Exec(`
 		delete from items
 		where id in (
@@ -405,7 +317,7 @@ func (s *Storage) DeleteOldItems() {
 			where rn > :keep_size
 			  and last_arrived < datetime(max_la, :keep_days_limit)
 		)`,
-		sql.Named("starred_status", STARRED),
+		sql.Named("starred_status", model.STARRED),
 		sql.Named("keep_size", itemsKeepSize),
 		sql.Named("keep_days_limit", fmt.Sprintf("-%d days", itemsKeepDays)),
 	)

src/storage/sqlite/item_test.go

@@ -1,4 +1,4 @@
-package storage
+package sqlite
 
 import (
 	"database/sql"
@@ -8,6 +8,8 @@ import (
 	"testing"
 	"testing/synctest"
 	"time"
+
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
 /*
@@ -30,22 +32,22 @@ import (
 */
 
 type testItemScope struct {
-	feed11, feed12   *Feed
-	feed21, feed01   *Feed
-	folder1, folder2 *Folder
+	feed11, feed12   *model.Feed
+	feed21, feed01   *model.Feed
+	folder1, folder2 *model.Folder
 }
 
-func testItemsSetup(db *Storage) testItemScope {
+func testItemsSetup(db *SQLiteStorage) testItemScope {
 	folder1 := db.CreateFolder("folder1")
 	folder2 := db.CreateFolder("folder2")
 
-	feed11 := db.CreateFeed(CreateFeedParams{Title: "feed11", FeedLink: "http://test.com/feed11.xml", FolderID: &folder1.Id})
-	feed12 := db.CreateFeed(CreateFeedParams{Title: "feed12", FeedLink: "http://test.com/feed12.xml", FolderID: &folder1.Id})
-	feed21 := db.CreateFeed(CreateFeedParams{Title: "feed21", FeedLink: "http://test.com/feed21.xml", FolderID: &folder2.Id})
-	feed01 := db.CreateFeed(CreateFeedParams{Title: "feed01", FeedLink: "http://test.com/feed01.xml"})
+	feed11 := db.CreateFeed(model.CreateFeedParams{Title: "feed11", FeedLink: "http://test.com/feed11.xml", FolderID: &folder1.Id})
+	feed12 := db.CreateFeed(model.CreateFeedParams{Title: "feed12", FeedLink: "http://test.com/feed12.xml", FolderID: &folder1.Id})
+	feed21 := db.CreateFeed(model.CreateFeedParams{Title: "feed21", FeedLink: "http://test.com/feed21.xml", FolderID: &folder2.Id})
+	feed01 := db.CreateFeed(model.CreateFeedParams{Title: "feed01", FeedLink: "http://test.com/feed01.xml"})
 
 	now := time.Now()
-	db.CreateItems([]Item{
+	db.CreateItems([]model.Item{
 		// feed11
 		{GUID: "item111", FeedId: feed11.Id, Title: "title111", Date: now.Add(time.Hour * 24 * 1)},
 		{
@@ -98,11 +100,11 @@ func testItemsSetup(db *Storage) testItemScope {
 	})
 	db.db.Exec(
 		`update items set status = :status where guid in ("item112", "item122", "item211", "item012")`,
-		sql.Named("status", READ),
+		sql.Named("status", model.READ),
 	)
 	db.db.Exec(
 		`update items set status = :status where guid in ("item113", "item212", "item013")`,
-		sql.Named("status", STARRED),
+		sql.Named("status", model.STARRED),
 	)
 
 	return testItemScope{
@@ -115,8 +117,8 @@ func testItemsSetup(db *Storage) testItemScope {
 	}
 }
 
-func getItem(db *Storage, guid string) *Item {
-	i := &Item{}
+func getItem(db *SQLiteStorage, guid string) *model.Item {
+	i := &model.Item{}
 	err := db.db.QueryRow(`
 		select
 			i.id, i.guid, i.feed_id, i.title, i.link, i.content,
@@ -125,7 +127,7 @@ func getItem(db *Storage, guid string) *Item {
 		where i.guid = :guid
 	`, sql.Named("guid", guid)).Scan(
 		&i.Id, &i.GUID, &i.FeedId, &i.Title, &i.Link, &i.Content,
-		&i.Date, &i.Status, &i.MediaLinks,
+		&i.Date, &i.Status, (*MediaLinks)(&i.MediaLinks),
 	)
 	if err != nil {
 		log.Fatal(err)
@@ -133,7 +135,7 @@ func getItem(db *Storage, guid string) *Item {
 	return i
 }
 
-func getItemGuids(items []Item) []string {
+func getItemGuids(items []model.Item) []string {
 	guids := make([]string, 0)
 	for _, item := range items {
 		guids = append(guids, item.GUID)
@@ -147,7 +149,7 @@ func TestListItems(t *testing.T) {
 
 	// filter by folder_id
 
-	have := getItemGuids(db.ListItems(ItemFilter{FolderID: &scope.folder1.Id}, 10, false, false))
+	have := getItemGuids(db.ListItems(model.ItemFilter{FolderID: &scope.folder1.Id}, 10, false, false))
 	want := []string{"item111", "item112", "item113", "item121", "item122"}
 	if !reflect.DeepEqual(have, want) {
 		t.Logf("want: %#v", want)
@@ -155,7 +157,7 @@ func TestListItems(t *testing.T) {
 		t.Fail()
 	}
 
-	have = getItemGuids(db.ListItems(ItemFilter{FolderID: &scope.folder2.Id}, 10, false, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{FolderID: &scope.folder2.Id}, 10, false, false))
 	want = []string{"item211", "item212"}
 	if !reflect.DeepEqual(have, want) {
 		t.Logf("want: %#v", want)
@@ -165,7 +167,7 @@ func TestListItems(t *testing.T) {
 
 	// filter by feed_id
 
-	have = getItemGuids(db.ListItems(ItemFilter{FeedID: &scope.feed11.Id}, 10, false, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{FeedID: &scope.feed11.Id}, 10, false, false))
 	want = []string{"item111", "item112", "item113"}
 	if !reflect.DeepEqual(have, want) {
 		t.Logf("want: %#v", want)
@@ -173,7 +175,7 @@ func TestListItems(t *testing.T) {
 		t.Fail()
 	}
 
-	have = getItemGuids(db.ListItems(ItemFilter{FeedID: &scope.feed01.Id}, 10, false, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{FeedID: &scope.feed01.Id}, 10, false, false))
 	want = []string{"item011", "item012", "item013"}
 	if !reflect.DeepEqual(have, want) {
 		t.Logf("want: %#v", want)
@@ -183,8 +185,8 @@ func TestListItems(t *testing.T) {
 
 	// filter by status
 
-	var starred ItemStatus = STARRED
-	have = getItemGuids(db.ListItems(ItemFilter{Status: &starred}, 10, false, false))
+	var starred model.ItemStatus = model.STARRED
+	have = getItemGuids(db.ListItems(model.ItemFilter{Status: &starred}, 10, false, false))
 	want = []string{"item113", "item212", "item013"}
 	if !reflect.DeepEqual(have, want) {
 		t.Logf("want: %#v", want)
@@ -192,8 +194,8 @@ func TestListItems(t *testing.T) {
 		t.Fail()
 	}
 
-	var unread ItemStatus = UNREAD
-	have = getItemGuids(db.ListItems(ItemFilter{Status: &unread}, 10, false, false))
+	var unread model.ItemStatus = model.UNREAD
+	have = getItemGuids(db.ListItems(model.ItemFilter{Status: &unread}, 10, false, false))
 	want = []string{"item111", "item121", "item011"}
 	if !reflect.DeepEqual(have, want) {
 		t.Logf("want: %#v", want)
@@ -203,7 +205,7 @@ func TestListItems(t *testing.T) {
 
 	// limit
 
-	have = getItemGuids(db.ListItems(ItemFilter{}, 2, false, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{}, 2, false, false))
 	want = []string{"item111", "item112"}
 	if !reflect.DeepEqual(have, want) {
 		t.Logf("want: %#v", want)
@@ -213,7 +215,7 @@ func TestListItems(t *testing.T) {
 
 	// filter by search
 	search1 := "title111"
-	have = getItemGuids(db.ListItems(ItemFilter{Search: &search1}, 4, true, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{Search: &search1}, 4, true, false))
 	want = []string{"item111"}
 	if !reflect.DeepEqual(have, want) {
 		t.Logf("want: %#v", want)
@@ -222,7 +224,7 @@ func TestListItems(t *testing.T) {
 	}
 
 	// sort by date
-	have = getItemGuids(db.ListItems(ItemFilter{}, 4, true, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{}, 4, true, false))
 	want = []string{"item013", "item012", "item011", "item212"}
 	if !reflect.DeepEqual(have, want) {
 		t.Logf("want: %#v", want)
@@ -239,7 +241,7 @@ func TestListItemsPaginated(t *testing.T) {
 	item121 := getItem(db, "item121")
 
 	// all, newest first
-	have := getItemGuids(db.ListItems(ItemFilter{After: &item012.Id}, 3, true, false))
+	have := getItemGuids(db.ListItems(model.ItemFilter{After: &item012.Id}, 3, true, false))
 	want := []string{"item011", "item212", "item211"}
 	if !reflect.DeepEqual(have, want) {
 		t.Logf("want: %#v", want)
@@ -248,9 +250,9 @@ func TestListItemsPaginated(t *testing.T) {
 	}
 
 	// unread, newest first
-	unread := UNREAD
+	unread := model.UNREAD
 	have = getItemGuids(
-		db.ListItems(ItemFilter{After: &item012.Id, Status: &unread}, 3, true, false),
+		db.ListItems(model.ItemFilter{After: &item012.Id, Status: &unread}, 3, true, false),
 	)
 	want = []string{"item011", "item121", "item111"}
 	if !reflect.DeepEqual(have, want) {
@@ -260,9 +262,9 @@ func TestListItemsPaginated(t *testing.T) {
 	}
 
 	// starred, oldest first
-	starred := STARRED
+	starred := model.STARRED
 	have = getItemGuids(
-		db.ListItems(ItemFilter{After: &item121.Id, Status: &starred}, 3, false, false),
+		db.ListItems(model.ItemFilter{After: &item121.Id, Status: &starred}, 3, false, false),
 	)
 	want = []string{"item212", "item013"}
 	if !reflect.DeepEqual(have, want) {
@@ -274,12 +276,12 @@ func TestListItemsPaginated(t *testing.T) {
 
 func TestMarkItemsRead(t *testing.T) {
 	// NOTE: starred items must not be marked as read
-	var read ItemStatus = READ
+	var read model.ItemStatus = model.READ
 
 	db1 := testDB()
 	testItemsSetup(db1)
-	db1.MarkItemsRead(MarkFilter{})
-	have := getItemGuids(db1.ListItems(ItemFilter{Status: &read}, 10, false, false))
+	db1.MarkItemsRead(model.MarkFilter{})
+	have := getItemGuids(db1.ListItems(model.ItemFilter{Status: &read}, 10, false, false))
 	want := []string{
 		"item111", "item112", "item121", "item122",
 		"item211", "item011", "item012",
@@ -292,8 +294,8 @@ func TestMarkItemsRead(t *testing.T) {
 
 	db2 := testDB()
 	scope2 := testItemsSetup(db2)
-	db2.MarkItemsRead(MarkFilter{FolderID: &scope2.folder1.Id})
-	have = getItemGuids(db2.ListItems(ItemFilter{Status: &read}, 10, false, false))
+	db2.MarkItemsRead(model.MarkFilter{FolderID: &scope2.folder1.Id})
+	have = getItemGuids(db2.ListItems(model.ItemFilter{Status: &read}, 10, false, false))
 	want = []string{
 		"item111", "item112", "item121", "item122",
 		"item211", "item012",
@@ -306,8 +308,8 @@ func TestMarkItemsRead(t *testing.T) {
 
 	db3 := testDB()
 	scope3 := testItemsSetup(db3)
-	db3.MarkItemsRead(MarkFilter{FeedID: &scope3.feed11.Id})
-	have = getItemGuids(db3.ListItems(ItemFilter{Status: &read}, 10, false, false))
+	db3.MarkItemsRead(model.MarkFilter{FeedID: &scope3.feed11.Id})
+	have = getItemGuids(db3.ListItems(model.ItemFilter{Status: &read}, 10, false, false))
 	want = []string{
 		"item111", "item112", "item122",
 		"item211", "item012",
@@ -321,14 +323,14 @@ func TestMarkItemsRead(t *testing.T) {
 
 func TestDeleteOldItems(t *testing.T) {
 	now := time.Now().UTC()
-	starred := STARRED
+	starred := model.STARRED
 
 	t.Run("keeps at least 50 items", func(t *testing.T) {
 		db := testDB()
-		feed := db.CreateFeed(CreateFeedParams{Title: "f", FeedLink: "http://f.xml"})
-		items := make([]Item, 100)
+		feed := db.CreateFeed(model.CreateFeedParams{Title: "f", FeedLink: "http://f.xml"})
+		items := make([]model.Item, 100)
 		for i := range 100 {
-			items[i] = Item{GUID: strconv.Itoa(i), FeedId: feed.Id, Date: now.Add(time.Duration(i) * time.Hour * 24)}
+			items[i] = model.Item{GUID: strconv.Itoa(i), FeedId: feed.Id, Date: now.Add(time.Duration(i) * time.Hour * 24)}
 		}
 		db.CreateItems(items)
 
@@ -346,10 +348,10 @@ func TestDeleteOldItems(t *testing.T) {
 
 	t.Run("keeps all less than 90 days old", func(t *testing.T) {
 		db := testDB()
-		feed := db.CreateFeed(CreateFeedParams{Title: "f", FeedLink: "http://f.xml"})
-		items := make([]Item, 100)
+		feed := db.CreateFeed(model.CreateFeedParams{Title: "f", FeedLink: "http://f.xml"})
+		items := make([]model.Item, 100)
 		for i := 0; i < 100; i++ {
-			items[i] = Item{GUID: strconv.Itoa(i), FeedId: feed.Id, Date: now.Add(time.Duration(i) * time.Second)}
+			items[i] = model.Item{GUID: strconv.Itoa(i), FeedId: feed.Id, Date: now.Add(time.Duration(i) * time.Second)}
 		}
 		db.CreateItems(items)
 
@@ -368,10 +370,10 @@ func TestDeleteOldItems(t *testing.T) {
 
 	t.Run("keeps starred", func(t *testing.T) {
 		db := testDB()
-		feed := db.CreateFeed(CreateFeedParams{Title: "f", FeedLink: "http://f.xml"})
-		items := make([]Item, 100)
+		feed := db.CreateFeed(model.CreateFeedParams{Title: "f", FeedLink: "http://f.xml"})
+		items := make([]model.Item, 100)
 		for i := 0; i < 100; i++ {
-			items[i] = Item{GUID: strconv.Itoa(i), FeedId: feed.Id, Date: now.Add(time.Duration(i) * time.Second)}
+			items[i] = model.Item{GUID: strconv.Itoa(i), FeedId: feed.Id, Date: now.Add(time.Duration(i) * time.Second)}
 		}
 		db.CreateItems(items)
 
@@ -397,9 +399,9 @@ func TestCreateItemsLastArrived(t *testing.T) {
 	synctest.Test(t, func(t *testing.T) {
 		db := testDB()
 		defer db.db.Close()
-		feed := db.CreateFeed(CreateFeedParams{Title: "test feed", FeedLink: "http://example.com/feed"})
+		feed := db.CreateFeed(model.CreateFeedParams{Title: "test feed", FeedLink: "http://example.com/feed"})
 
-		item := Item{
+		item := model.Item{
 			GUID:   "item1",
 			FeedId: feed.Id,
 			Title:  "Title 1",
@@ -407,7 +409,7 @@ func TestCreateItemsLastArrived(t *testing.T) {
 		}
 
 		// 1. Initial creation
-		db.CreateItems([]Item{item})
+		db.CreateItems([]model.Item{item})
 
 		var lastArrived1 time.Time
 		err := db.db.QueryRow("select last_arrived from items where guid = ?", item.GUID).Scan(&lastArrived1)
@@ -418,7 +420,7 @@ func TestCreateItemsLastArrived(t *testing.T) {
 		time.Sleep(time.Second * 10)
 
 		// 2. Update on conflict
-		db.CreateItems([]Item{item})
+		db.CreateItems([]model.Item{item})
 
 		var lastArrived2 time.Time
 		err = db.db.QueryRow("select last_arrived from items where guid = ?", item.GUID).Scan(&lastArrived2)
@@ -435,9 +437,9 @@ func TestCreateItemsLastArrived(t *testing.T) {
 func TestSearch(t *testing.T) {
 	db := testDB()
 	defer db.Close()
-	feed := db.CreateFeed(CreateFeedParams{Title: "f", FeedLink: "http://f.xml"})
+	feed := db.CreateFeed(model.CreateFeedParams{Title: "f", FeedLink: "http://f.xml"})
 
-	db.CreateItems([]Item{
+	db.CreateItems([]model.Item{
 		{
 			GUID:    "i1",
 			FeedId:  feed.Id,
@@ -460,40 +462,40 @@ func TestSearch(t *testing.T) {
 
 	// 1. Basic search
 	s1 := "emergency"
-	have := getItemGuids(db.ListItems(ItemFilter{Search: &s1}, 10, true, false))
+	have := getItemGuids(db.ListItems(model.ItemFilter{Search: &s1}, 10, true, false))
 	if !reflect.DeepEqual(have, []string{"i1"}) {
 		t.Errorf("basic search failed: expected [i1], got %v", have)
 	}
 
 	// 2. HTML stripping: Should find text, but NOT the tags
 	s2 := "test"
-	have = getItemGuids(db.ListItems(ItemFilter{Search: &s2}, 10, true, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{Search: &s2}, 10, true, false))
 	if !reflect.DeepEqual(have, []string{"i1"}) {
 		t.Errorf("html text search failed: expected [i1], got %v", have)
 	}
 
 	s3 := "secret-class"
-	have = getItemGuids(db.ListItems(ItemFilter{Search: &s3}, 10, true, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{Search: &s3}, 10, true, false))
 	if len(have) > 0 {
 		t.Errorf("html tag search should have failed but found: %v", have)
 	}
 
 	// 3. Multi-word (AND)
 	s4 := "broadcast system"
-	have = getItemGuids(db.ListItems(ItemFilter{Search: &s4}, 10, true, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{Search: &s4}, 10, true, false))
 	if !reflect.DeepEqual(have, []string{"i1"}) {
 		t.Errorf("multi-word search failed: expected [i1], got %v", have)
 	}
 
 	// 4. Unicode
 	s5 := "Привет"
-	have = getItemGuids(db.ListItems(ItemFilter{Search: &s5}, 10, true, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{Search: &s5}, 10, true, false))
 	if !reflect.DeepEqual(have, []string{"i2"}) {
 		t.Errorf("unicode search failed: expected [i2], got %v", have)
 	}
 
 	s6 := "世界"
-	have = getItemGuids(db.ListItems(ItemFilter{Search: &s6}, 10, true, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{Search: &s6}, 10, true, false))
 	if !reflect.DeepEqual(have, []string{"i2"}) {
 		t.Errorf("unicode search (CJK) failed: expected [i2], got %v", have)
 	}
@@ -501,14 +503,14 @@ func TestSearch(t *testing.T) {
 	// 5. Trigger: Update
 	db.db.Exec("update items set title = 'Updated Title' where guid = 'i1'")
 	s7 := "Updated"
-	have = getItemGuids(db.ListItems(ItemFilter{Search: &s7}, 10, true, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{Search: &s7}, 10, true, false))
 	if !reflect.DeepEqual(have, []string{"i1"}) {
 		t.Errorf("update trigger failed: expected [i1], got %v", have)
 	}
 
 	// 6. Trigger: Delete
 	db.db.Exec("delete from items where guid = 'i1'")
-	have = getItemGuids(db.ListItems(ItemFilter{Search: &s7}, 10, true, false))
+	have = getItemGuids(db.ListItems(model.ItemFilter{Search: &s7}, 10, true, false))
 	if len(have) > 0 {
 		t.Errorf("delete trigger failed: found deleted item: %v", have)
 	}

src/storage/sqlite/migration.go

@@ -1,4 +1,4 @@
-package storage
+package sqlite
 
 import (
 	"database/sql"

src/storage/sqlite/settings.go

@@ -1,41 +1,15 @@
-package storage
+package sqlite
 
 import (
 	"database/sql"
 	"encoding/json"
 	"log"
+
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
-type Settings struct {
-	Filter          string `json:"filter"`
-	Feed            string `json:"feed"`
-	FeedListWidth   int    `json:"feed_list_width"`
-	ItemListWidth   int    `json:"item_list_width"`
-	SortNewestFirst bool   `json:"sort_newest_first"`
-	ThemeName       string `json:"theme_name"`
-	ThemeFont       string `json:"theme_font"`
-	ThemeSize       int    `json:"theme_size"`
-	RefreshRate     int64  `json:"refresh_rate"`
-	Language        string `json:"language"`
-}
-
-func (s Settings) Map() map[string]any {
-	return map[string]any{
-		"filter":            s.Filter,
-		"feed":              s.Feed,
-		"feed_list_width":   s.FeedListWidth,
-		"item_list_width":   s.ItemListWidth,
-		"sort_newest_first": s.SortNewestFirst,
-		"theme_name":        s.ThemeName,
-		"theme_font":        s.ThemeFont,
-		"theme_size":        s.ThemeSize,
-		"refresh_rate":      s.RefreshRate,
-		"language":          s.Language,
-	}
-}
-
-func settingsDefaults() Settings {
-	return Settings{
+func settingsDefaults() model.Settings {
+	return model.Settings{
 		Filter:          "",
 		Feed:            "",
 		FeedListWidth:   300,
@@ -49,7 +23,7 @@ func settingsDefaults() Settings {
 	}
 }
 
-func (s *Storage) GetSettings() Settings {
+func (s *SQLiteStorage) GetSettings() model.Settings {
 	result := settingsDefaults()
 	rows, err := s.db.Query(`select key, val from settings;`)
 	if err != nil {
@@ -89,20 +63,7 @@ func (s *Storage) GetSettings() Settings {
 	return result
 }
 
-type UpdateSettingsParams struct {
-	Filter          *string `json:"filter"`
-	Feed            *string `json:"feed"`
-	FeedListWidth   *int    `json:"feed_list_width"`
-	ItemListWidth   *int    `json:"item_list_width"`
-	SortNewestFirst *bool   `json:"sort_newest_first"`
-	ThemeName       *string `json:"theme_name"`
-	ThemeFont       *string `json:"theme_font"`
-	ThemeSize       *int    `json:"theme_size"`
-	RefreshRate     *int64  `json:"refresh_rate"`
-	Language        *string `json:"language"`
-}
-
-func (s *Storage) UpdateSettings(params UpdateSettingsParams) bool {
+func (s *SQLiteStorage) UpdateSettings(params model.UpdateSettingsParams) bool {
 	tx, err := s.db.Begin()
 	if err != nil {
 		log.Print(err)

src/storage/sqlite/settings_test.go

@@ -1,9 +1,11 @@
-package storage
+package sqlite
 
 import (
 	"reflect"
 	"strings"
 	"testing"
+
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
 func TestSettingsDefaults(t *testing.T) {
@@ -22,7 +24,7 @@ func TestUpdateSettings(t *testing.T) {
 	s := testDB()
 	defer s.Close()
 
-	params := UpdateSettingsParams{
+	params := model.UpdateSettingsParams{
 		ThemeName:     ptr("night"),
 		FeedListWidth: ptr(400),
 		RefreshRate:   ptr(int64(15)),
@@ -49,7 +51,7 @@ func TestGetSettings(t *testing.T) {
 	s := testDB()
 	defer s.Close()
 
-	s.UpdateSettings(UpdateSettingsParams{Language: ptr("fr")})
+	s.UpdateSettings(model.UpdateSettingsParams{Language: ptr("fr")})
 
 	settings := s.GetSettings()
 	if settings.Language != "fr" {
@@ -64,8 +66,8 @@ func TestSettingsExhaustive(t *testing.T) {
 	s := testDB()
 	defer s.Close()
 
-	settingsType := reflect.TypeOf(Settings{})
-	paramsType := reflect.TypeOf(UpdateSettingsParams{})
+	settingsType := reflect.TypeOf(model.Settings{})
+	paramsType := reflect.TypeOf(model.UpdateSettingsParams{})
 	
 	settings := s.GetSettings()
 	m := settings.Map()
@@ -125,7 +127,7 @@ func TestSettingsExhaustive(t *testing.T) {
 			}
 		}
 		
-		if ok := s.UpdateSettings(paramsValue.Interface().(UpdateSettingsParams)); !ok {
+		if ok := s.UpdateSettings(paramsValue.Interface().(model.UpdateSettingsParams)); !ok {
 			t.Errorf("UpdateSettings failed for %q", jsonKey)
 		}
 		

src/storage/sqlite/storage.go

@@ -0,0 +1,44 @@
+package sqlite
+
+import (
+	"database/sql"
+	"log"
+	"strings"
+
+	"github.com/mattn/go-sqlite3"
+	"github.com/nkanaev/yarr/src/content/htmlutil"
+)
+
+func init() {
+	sql.Register("sqlite3_yarr", &sqlite3.SQLiteDriver{
+		ConnectHook: func(conn *sqlite3.SQLiteConn) error {
+			return conn.RegisterFunc("strip_html", htmlutil.ExtractText, true)
+		},
+	})
+}
+
+type SQLiteStorage struct {
+	db *sql.DB
+}
+
+func New(path string) (*SQLiteStorage, error) {
+	if pos := strings.IndexRune(path, '?'); pos == -1 {
+		params := "_journal=WAL&_sync=NORMAL&_busy_timeout=5000&cache=shared"
+		log.Printf("opening db with params: %s", params)
+		path = path + "?" + params
+	}
+
+	db, err := sql.Open("sqlite3_yarr", path)
+	if err != nil {
+		return nil, err
+	}
+
+	if err = migrate(db); err != nil {
+		return nil, err
+	}
+	return &SQLiteStorage{db: db}, nil
+}
+
+func (s *SQLiteStorage) Close() error {
+	return s.db.Close()
+}

src/storage/sqlite/storage_test.go

@@ -1,4 +1,4 @@
-package storage
+package sqlite
 
 import (
 	"io"
@@ -7,7 +7,7 @@ import (
 	"testing"
 )
 
-func testDB() *Storage {
+func testDB() *SQLiteStorage {
 	log.SetOutput(io.Discard)
 	db, err := New(":memory:")
 	if err != nil {

src/storage/storage.go

@@ -1,53 +1,36 @@
 package storage
 
 import (
-	"database/sql"
-	"log"
-	"strings"
-
-	"github.com/mattn/go-sqlite3"
-	"github.com/nkanaev/yarr/src/content/htmlutil"
+	"github.com/nkanaev/yarr/src/storage/model"
+	"github.com/nkanaev/yarr/src/storage/sqlite"
 )
 
-func init() {
-	sql.Register("sqlite3_yarr", &sqlite3.SQLiteDriver{
-		ConnectHook: func(conn *sqlite3.SQLiteConn) error {
-			return conn.RegisterFunc("strip_html", htmlutil.ExtractText, true)
-		},
-	})
+type Storage interface {
+	Close() error
+	CountItems() int
+	CreateFeed(params model.CreateFeedParams) *model.Feed
+	CreateFolder(title string) *model.Folder
+	CreateItems(items []model.Item) bool
+	DeleteFeed(feedId int64) bool
+	DeleteFolder(folderId int64) bool
+	DeleteOldItems()
+	FeedStats() []model.FeedStat
+	GetFeed(id int64) *model.Feed
+	GetFeedState(feedID int64) (*model.FeedState, error)
+	GetItem(id int64) *model.Item
+	GetSettings() model.Settings
+	ListFeedStates() ([]model.FeedState, error)
+	ListFeeds() []model.Feed
+	ListFolders() []model.Folder
+	ListItems(filter model.ItemFilter, limit int, newestFirst bool, withContent bool) []model.Item
+	MarkItemsRead(filter model.MarkFilter) bool
+	UpdateFeed(feedId int64, params model.UpdateFeedParams) (bool, error)
+	UpdateFeedState(feedID int64, params model.UpdateFeedStateParams) (bool, error)
+	UpdateFolder(folderId int64, params model.UpdateFolderParams) (bool, error)
+	UpdateItemStatus(item_id int64, status model.ItemStatus) bool
+	UpdateSettings(params model.UpdateSettingsParams) bool
 }
 
-type Storage struct {
-	db *sql.DB
-}
-
-type Nullable[T any] struct {
-	Set   bool
-	Value *T
-}
-
-func SetNullable[T any](v *T) Nullable[T] {
-	return Nullable[T]{Set: true, Value: v}
-}
-
-func New(path string) (*Storage, error) {
-	if pos := strings.IndexRune(path, '?'); pos == -1 {
-		params := "_journal=WAL&_sync=NORMAL&_busy_timeout=5000&cache=shared"
-		log.Printf("opening db with params: %s", params)
-		path = path + "?" + params
-	}
-
-	db, err := sql.Open("sqlite3_yarr", path)
-	if err != nil {
-		return nil, err
-	}
-
-	if err = migrate(db); err != nil {
-		return nil, err
-	}
-	return &Storage{db: db}, nil
-}
-
-func (s *Storage) Close() error {
-	return s.db.Close()
+func New(path string) (Storage, error) {
+	return sqlite.New(path)
 }

src/worker/crawler.go

@@ -14,6 +14,7 @@ import (
 	"github.com/nkanaev/yarr/src/content/scraper"
 	"github.com/nkanaev/yarr/src/parser"
 	"github.com/nkanaev/yarr/src/storage"
+	"github.com/nkanaev/yarr/src/storage/model"
 	"golang.org/x/net/html/charset"
 )
 
@@ -139,28 +140,28 @@ func findFavicon(siteUrl, feedUrl string) (*[]byte, error) {
 	return &emptyIcon, nil
 }
 
-func ConvertItems(items []parser.Item, feed storage.Feed) []storage.Item {
-	result := make([]storage.Item, len(items))
+func ConvertItems(items []parser.Item, feed model.Feed) []model.Item {
+	result := make([]model.Item, len(items))
 	for i, item := range items {
-		mediaLinks := make(storage.MediaLinks, 0)
+		mediaLinks := make(model.MediaLinks, 0)
 		for _, link := range item.MediaLinks {
-			mediaLinks = append(mediaLinks, storage.MediaLink(link))
+			mediaLinks = append(mediaLinks, model.MediaLink(link))
 		}
-		result[i] = storage.Item{
+		result[i] = model.Item{
 			GUID:       item.GUID,
 			FeedId:     feed.Id,
 			Title:      item.Title,
 			Link:       item.URL,
 			Content:    item.Content,
 			Date:       item.Date,
-			Status:     storage.UNREAD,
+			Status:     model.UNREAD,
 			MediaLinks: mediaLinks,
 		}
 	}
 	return result
 }
 
-func listItems(f storage.Feed, db *storage.Storage) ([]storage.Item, error) {
+func listItems(f model.Feed, db storage.Storage) ([]model.Item, error) {
 	lmod := ""
 	etag := ""
 	if state, _ := db.GetFeedState(f.Id); state != nil {
@@ -193,7 +194,7 @@ func listItems(f storage.Feed, db *storage.Storage) ([]storage.Item, error) {
 	etag = res.Header.Get("Etag")
 	now := time.Now().UTC()
 	if lmod != "" || etag != "" {
-		db.UpdateFeedState(f.Id, storage.UpdateFeedStateParams{
+		db.UpdateFeedState(f.Id, model.UpdateFeedStateParams{
 			HTTPLastModified: &lmod,
 			HTTPEtag:         &etag,
 			LastRefreshed:    &now,

src/worker/worker.go

@@ -7,19 +7,20 @@ import (
 	"time"
 
 	"github.com/nkanaev/yarr/src/storage"
+	"github.com/nkanaev/yarr/src/storage/model"
 )
 
 const NUM_WORKERS = 4
 
 type Worker struct {
-	db      *storage.Storage
+	db      storage.Storage
 	pending *int32
 	refresh *time.Ticker
 	reflock sync.Mutex
 	stopper chan bool
 }
 
-func NewWorker(db *storage.Storage) *Worker {
+func NewWorker(db storage.Storage) *Worker {
 	pending := int32(0)
 	return &Worker{db: db, pending: &pending}
 }
@@ -39,13 +40,13 @@ func (w *Worker) StartFeedCleaner() {
 	}()
 }
 
-func (w *Worker) FindFeedFavicon(feed storage.Feed) {
+func (w *Worker) FindFeedFavicon(feed model.Feed) {
 	icon, err := findFavicon(feed.Link, feed.FeedLink)
 	if err != nil {
 		log.Printf("Failed to find favicon for %s (%s): %s", feed.FeedLink, feed.Link, err)
 	}
 	if icon != nil {
-		w.db.UpdateFeed(feed.Id, storage.UpdateFeedParams{Icon: storage.SetNullable(icon)})
+		w.db.UpdateFeed(feed.Id, model.UpdateFeedParams{Icon: model.SetNullable(icon)})
 	}
 }
 
@@ -99,11 +100,11 @@ func (w *Worker) RefreshFeeds() {
 	go w.refresher(feeds)
 }
 
-func (w *Worker) refresher(feeds []storage.Feed) {
+func (w *Worker) refresher(feeds []model.Feed) {
 	// w.db.ResetFeedErrors()
 
-	srcqueue := make(chan storage.Feed, len(feeds))
-	dstqueue := make(chan []storage.Item)
+	srcqueue := make(chan model.Feed, len(feeds))
+	dstqueue := make(chan []model.Item)
 
 	for range NUM_WORKERS {
 		go w.worker(srcqueue, dstqueue)
@@ -125,15 +126,15 @@ func (w *Worker) refresher(feeds []storage.Feed) {
 	log.Printf("Finished refreshing %d feeds", len(feeds))
 }
 
-func (w *Worker) worker(srcqueue <-chan storage.Feed, dstqueue chan<- []storage.Item) {
+func (w *Worker) worker(srcqueue <-chan model.Feed, dstqueue chan<- []model.Item) {
 	for feed := range srcqueue {
 		empty := ""
-		w.db.UpdateFeedState(feed.Id, storage.UpdateFeedStateParams{LastError: &empty})
+		w.db.UpdateFeedState(feed.Id, model.UpdateFeedStateParams{LastError: &empty})
 
 		items, err := listItems(feed, w.db)
 		if err != nil {
 			errMsg := err.Error()
-			w.db.UpdateFeedState(feed.Id, storage.UpdateFeedStateParams{LastError: &errMsg})
+			w.db.UpdateFeedState(feed.Id, model.UpdateFeedStateParams{LastError: &errMsg})
 		}
 		if len(items) > 0 && !feed.HasIcon {
 			w.FindFeedFavicon(feed)