diff --git a/hw12_13_14_15_calendar/Makefile b/hw12_13_14_15_calendar/Makefile
index 733d4d1..60ddfd8 100644
--- a/hw12_13_14_15_calendar/Makefile
+++ b/hw12_13_14_15_calendar/Makefile
@@ -1,8 +1,8 @@
 build:
-	go build -o ./bin/calendar ./cmd/calendar
+	go build -o ./bin/calendar ./src
 
 test:
-	go test -race ./internal/... ./pkg/...
+	go test -race ./src/...
 
 install-lint-deps:
 	(which golangci-lint > /dev/null) || curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.30.0
diff --git a/hw12_13_14_15_calendar/internal/storage/memory/storage.go b/hw12_13_14_15_calendar/internal/storage/memory/storage.go
deleted file mode 100644
index bbc033d..0000000
--- a/hw12_13_14_15_calendar/internal/storage/memory/storage.go
+++ /dev/null
@@ -1,14 +0,0 @@
-package memorystorage
-
-import "sync"
-
-type Storage struct {
-	// TODO
-	mu sync.RWMutex
-}
-
-func New() *Storage {
-	return &Storage{}
-}
-
-// TODO
diff --git a/hw12_13_14_15_calendar/internal/storage/memory/storage_test.go b/hw12_13_14_15_calendar/internal/storage/memory/storage_test.go
deleted file mode 100644
index 7e303bc..0000000
--- a/hw12_13_14_15_calendar/internal/storage/memory/storage_test.go
+++ /dev/null
@@ -1,7 +0,0 @@
-package memorystorage
-
-import "testing"
-
-func TestStorage(t *testing.T) {
-	// TODO
-}
diff --git a/hw12_13_14_15_calendar/internal/storage/sql/storage.go b/hw12_13_14_15_calendar/internal/storage/sql/storage.go
deleted file mode 100644
index 550e449..0000000
--- a/hw12_13_14_15_calendar/internal/storage/sql/storage.go
+++ /dev/null
@@ -1,21 +0,0 @@
-package sqlstorage
-
-import "context"
-
-type Storage struct {
-	// TODO
-}
-
-func New() *Storage {
-	return &Storage{}
-}
-
-func (s *Storage) Connect(ctx context.Context) error {
-	// TODO
-	return nil
-}
-
-func (s *Storage) Close(ctx context.Context) error {
-	// TODO
-	return nil
-}
diff --git a/hw12_13_14_15_calendar/internal/app/app.go b/hw12_13_14_15_calendar/src/app/app.go
similarity index 100%
rename from hw12_13_14_15_calendar/internal/app/app.go
rename to hw12_13_14_15_calendar/src/app/app.go
diff --git a/hw12_13_14_15_calendar/internal/config/config.go b/hw12_13_14_15_calendar/src/config/config.go
similarity index 67%
rename from hw12_13_14_15_calendar/internal/config/config.go
rename to hw12_13_14_15_calendar/src/config/config.go
index d876311..9a94e24 100644
--- a/hw12_13_14_15_calendar/internal/config/config.go
+++ b/hw12_13_14_15_calendar/src/config/config.go
@@ -7,28 +7,32 @@ import (
 )
 
 type Config struct {
-	Logger struct{
-		File string
-		Level string
+	Logger struct {
+		File       string
+		Level      string
 		MuteStdout bool
 	}
 	Storage struct {
 		In_memory bool
-		Sql_host string
-		Sql_port string
+		Sql_host  string
+		Sql_port  string
 		Sql_dbase string
-		Sql_user string
-		Sql_pass string
+		Sql_user  string
+		Sql_pass  string
 	}
 }
 
 // Confita может быти и хороша, но она не возвращает ошибки, если не может распарсить файл в структуру. Мне не нравится такая "молчаливость"
 func NewConfig(configFile string) (Config, error) {
-	f,err:= os.Open(configFile)
-	if err != nil {return Config{}, err}
+	f, err := os.Open(configFile)
+	if err != nil {
+		return Config{}, err
+	}
 	defer f.Close()
-	s,err := ioutil.ReadAll(f)
-	if err != nil {return Config{}, err}
+	s, err := ioutil.ReadAll(f)
+	if err != nil {
+		return Config{}, err
+	}
 	var config Config
 	_, err = toml.Decode(string(s), &config)
 	return config, err
diff --git a/hw12_13_14_15_calendar/internal/config/config_test.go b/hw12_13_14_15_calendar/src/config/config_test.go
similarity index 61%
rename from hw12_13_14_15_calendar/internal/config/config_test.go
rename to hw12_13_14_15_calendar/src/config/config_test.go
index 9d9d14c..a9fb374 100644
--- a/hw12_13_14_15_calendar/internal/config/config_test.go
+++ b/hw12_13_14_15_calendar/src/config/config_test.go
@@ -16,7 +16,9 @@ var _ = func() bool {
 func TestNewConfig(t *testing.T) {
 
 	badfile, err := ioutil.TempFile("", "conf.")
-	if err != nil { oslog.Fatal(err) }
+	if err != nil {
+		oslog.Fatal(err)
+	}
 	defer os.Remove(badfile.Name())
 	badfile.WriteString(`aefSD
 sadfg
@@ -25,7 +27,9 @@ V`)
 	badfile.Sync()
 
 	goodfile, err := ioutil.TempFile("", "conf.")
-	if err != nil { oslog.Fatal(err) }
+	if err != nil {
+		oslog.Fatal(err)
+	}
 	defer os.Remove(goodfile.Name())
 	goodfile.WriteString(`[storage]
 in_memory = true
@@ -33,22 +37,22 @@ sql_host = "localhost"`)
 	goodfile.Sync()
 
 	t.Run("No such file", func(t *testing.T) {
-		c,e := NewConfig("adfergdth")
-		require.Equal(t,Config{},c)
-		require.Error(t,e)
+		c, e := NewConfig("adfergdth")
+		require.Equal(t, Config{}, c)
+		require.Error(t, e)
 	})
 
 	t.Run("Bad file", func(t *testing.T) {
-		c,e := NewConfig(badfile.Name())
-		require.Equal(t,Config{},c)
-		require.Error(t,e)
+		c, e := NewConfig(badfile.Name())
+		require.Equal(t, Config{}, c)
+		require.Error(t, e)
 	})
 
 	t.Run("TOML reading", func(t *testing.T) {
-		c,e := NewConfig(goodfile.Name())
-		require.Equal(t,true,c.Storage.In_memory)
-		require.Equal(t,"localhost",c.Storage.Sql_host)
-		require.NoError(t,e)
+		c, e := NewConfig(goodfile.Name())
+		require.Equal(t, true, c.Storage.In_memory)
+		require.Equal(t, "localhost", c.Storage.Sql_host)
+		require.NoError(t, e)
 	})
 
 }
diff --git a/hw12_13_14_15_calendar/internal/logger/logger.go b/hw12_13_14_15_calendar/src/logger/logger.go
similarity index 85%
rename from hw12_13_14_15_calendar/internal/logger/logger.go
rename to hw12_13_14_15_calendar/src/logger/logger.go
index 459c010..a4f2642 100644
--- a/hw12_13_14_15_calendar/internal/logger/logger.go
+++ b/hw12_13_14_15_calendar/src/logger/logger.go
@@ -3,7 +3,7 @@ package logger
 import (
 	"errors"
 	amitralog "github.com/amitrai48/logger"
-	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/internal/config"
+	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/config"
 	"log"
 	"os"
 	"strings"
@@ -23,7 +23,7 @@ type Log struct {
 
 func New(conf config.Config) (Log, error) {
 
-	if conf.Logger.File=="" || !validLevel(conf.Logger.Level) {
+	if conf.Logger.File == "" || !validLevel(conf.Logger.Level) {
 		return Log{}, errors.New("invalid logger config")
 	}
 
@@ -66,11 +66,11 @@ func (l *Log) Fatal(format string, args ...interface{}) {
 }
 
 func validLevel(level string) bool {
-	l := []string{"debug","info","warn","error","fatal"}
-	for _,v:=range l {
-		if strings.ToLower(level)==v {
+	l := []string{"debug", "info", "warn", "error", "fatal"}
+	for _, v := range l {
+		if strings.ToLower(level) == v {
 			return true
 		}
 	}
 	return false
-}
\ No newline at end of file
+}
diff --git a/hw12_13_14_15_calendar/internal/logger/logger_test.go b/hw12_13_14_15_calendar/src/logger/logger_test.go
similarity index 69%
rename from hw12_13_14_15_calendar/internal/logger/logger_test.go
rename to hw12_13_14_15_calendar/src/logger/logger_test.go
index f7dd5fb..14288ec 100644
--- a/hw12_13_14_15_calendar/internal/logger/logger_test.go
+++ b/hw12_13_14_15_calendar/src/logger/logger_test.go
@@ -2,7 +2,7 @@ package logger
 
 import (
 	"github.com/stretchr/testify/require"
-	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/internal/config"
+	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/config"
 	"io/ioutil"
 	oslog "log"
 	"os"
@@ -12,7 +12,9 @@ import (
 
 func TestLoggerLogic(t *testing.T) {
 	tmpfile, err := ioutil.TempFile("", "log.")
-	if err != nil { oslog.Fatal(err) }
+	if err != nil {
+		oslog.Fatal(err)
+	}
 	defer os.Remove(tmpfile.Name())
 
 	conf := config.Config{Logger: struct {
@@ -21,16 +23,20 @@ func TestLoggerLogic(t *testing.T) {
 		MuteStdout bool
 	}{File: tmpfile.Name(), Level: "warn", MuteStdout: false}}
 	log, err := New(conf)
-	if err != nil { oslog.Fatal(err) }
+	if err != nil {
+		oslog.Fatal(err)
+	}
 
 	t.Run("Messages arround the level", func(t *testing.T) {
 		log.Debug("debug message")
 		log.Error("error message")
 
-		res,err := ioutil.ReadAll(tmpfile)
-		if err != nil { oslog.Fatal(err) }
-		require.Less(t,strings.Index(string(res),"debug message"),0)
-		require.Greater(t,strings.Index(string(res),"error message"),0)
+		res, err := ioutil.ReadAll(tmpfile)
+		if err != nil {
+			oslog.Fatal(err)
+		}
+		require.Less(t, strings.Index(string(res), "debug message"), 0)
+		require.Greater(t, strings.Index(string(res), "error message"), 0)
 	})
 }
 
@@ -42,7 +48,7 @@ func TestLoggerNegative(t *testing.T) {
 			MuteStdout bool
 		}{File: "", Level: "debug", MuteStdout: true}}
 		_, err := New(conf)
-		require.Error(t,err, "invalid logger config")
+		require.Error(t, err, "invalid logger config")
 	})
 
 	t.Run("Bad level", func(t *testing.T) {
@@ -52,6 +58,6 @@ func TestLoggerNegative(t *testing.T) {
 			MuteStdout bool
 		}{File: "asdafad", Level: "wegretryjt", MuteStdout: true}}
 		_, err := New(conf)
-		require.Error(t,err,"invalid logger config")
+		require.Error(t, err, "invalid logger config")
 	})
-}
\ No newline at end of file
+}
diff --git a/hw12_13_14_15_calendar/cmd/calendar/main.go b/hw12_13_14_15_calendar/src/main.go
similarity index 51%
rename from hw12_13_14_15_calendar/cmd/calendar/main.go
rename to hw12_13_14_15_calendar/src/main.go
index 91a04dc..09ef456 100644
--- a/hw12_13_14_15_calendar/cmd/calendar/main.go
+++ b/hw12_13_14_15_calendar/src/main.go
@@ -2,14 +2,14 @@ package main
 
 import (
 	"flag"
+	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/app"
+	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/config"
+	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/logger"
+	internalhttp "github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/server/http"
+	store "github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/storage"
 	oslog "log"
 	"os"
 	"os/signal"
-	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/internal/config"
-	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/internal/app"
-	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/internal/logger"
-	internalhttp "github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/internal/server/http"
-	memorystorage "github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/internal/storage/memory"
 )
 
 var configFile string
@@ -21,13 +21,21 @@ func init() {
 
 func main() {
 	conf, err := config.NewConfig(configFile)
-	if err != nil { oslog.Fatal("не удалось открыть файл конфигурации:", err.Error())}
+	if err != nil {
+		oslog.Fatal("не удалось открыть файл конфигурации:", err.Error())
+	}
 
 	log, err := logger.New(conf)
-	if err != nil { oslog.Fatal("не удалось запустить логер:", err.Error())}
+	if err != nil {
+		oslog.Fatal("не удалось запустить логер:", err.Error())
+	}
 
-	storage := memorystorage.New()
-	calendar := app.New(log, storage)
+	st := store.NewStore(conf)
+	if err != nil {
+		oslog.Fatal("не удалось инициализировать хранилище:", err.Error())
+	}
+
+	calendar := app.New(log, st)
 
 	server := internalhttp.NewServer(calendar)
 
diff --git a/hw12_13_14_15_calendar/internal/server/http/middleware.go b/hw12_13_14_15_calendar/src/server/http/middleware.go
similarity index 100%
rename from hw12_13_14_15_calendar/internal/server/http/middleware.go
rename to hw12_13_14_15_calendar/src/server/http/middleware.go
diff --git a/hw12_13_14_15_calendar/internal/server/http/server.go b/hw12_13_14_15_calendar/src/server/http/server.go
similarity index 100%
rename from hw12_13_14_15_calendar/internal/server/http/server.go
rename to hw12_13_14_15_calendar/src/server/http/server.go
diff --git a/hw12_13_14_15_calendar/internal/storage/event.go b/hw12_13_14_15_calendar/src/storage/event/event.go
similarity index 64%
rename from hw12_13_14_15_calendar/internal/storage/event.go
rename to hw12_13_14_15_calendar/src/storage/event/event.go
index 39b2d1a..eb9e0eb 100644
--- a/hw12_13_14_15_calendar/internal/storage/event.go
+++ b/hw12_13_14_15_calendar/src/storage/event/event.go
@@ -1,7 +1,7 @@
-package storage
+package event
 
 type Event struct {
 	ID    string
 	Title string
-	// TODO
+	Date  string
 }
diff --git a/hw12_13_14_15_calendar/src/storage/memory/memorystorage.go b/hw12_13_14_15_calendar/src/storage/memory/memorystorage.go
new file mode 100644
index 0000000..9e3567a
--- /dev/null
+++ b/hw12_13_14_15_calendar/src/storage/memory/memorystorage.go
@@ -0,0 +1,35 @@
+package memorystorage
+
+import (
+	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/storage/event"
+	"sync"
+)
+
+type Storage struct {
+	events []event.Event
+	mu     sync.RWMutex
+}
+
+func New() *Storage {
+	return &Storage{}
+}
+
+func (s Storage) Save(event event.Event) error {
+	return nil
+}
+
+func (s Storage) Update(event event.Event) error {
+	return nil
+}
+
+func (s Storage) Delete(event event.Event) error {
+	return nil
+}
+
+func (s Storage) List() []event.Event {
+	return []event.Event{}
+}
+
+func (s Storage) Get(id string) (event.Event, bool) {
+	return event.Event{}, false
+}
diff --git a/hw12_13_14_15_calendar/src/storage/sql/sqlstorage.go b/hw12_13_14_15_calendar/src/storage/sql/sqlstorage.go
new file mode 100644
index 0000000..cbb1714
--- /dev/null
+++ b/hw12_13_14_15_calendar/src/storage/sql/sqlstorage.go
@@ -0,0 +1,51 @@
+package sqlstorage
+
+import (
+	"context"
+	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/storage/event"
+	"sync"
+)
+
+type Storage struct {
+	Events []event.Event
+	Mu     sync.RWMutex
+}
+
+func New() *Storage {
+	return &Storage{}
+}
+
+func (s *Storage) Connect(ctx context.Context) error {
+	// TODO
+	return nil
+}
+
+func (s *Storage) Close(ctx context.Context) error {
+	// TODO
+	return nil
+}
+
+func (s Storage) Save(e event.Event) error {
+	if _, ok := s.Get(e.ID); !ok {
+		s.Mu.Lock()
+		s.Events = append(s.Events, e)
+		s.Mu.Unlock()
+	}
+	return nil
+}
+
+func (s Storage) Update(event event.Event) error {
+	return nil
+}
+
+func (s Storage) Delete(event event.Event) error {
+	return nil
+}
+
+func (s Storage) List() []event.Event {
+	return []event.Event{}
+}
+
+func (s Storage) Get(id string) (event.Event, bool) {
+	return event.Event{}, false
+}
diff --git a/hw12_13_14_15_calendar/src/storage/store.go b/hw12_13_14_15_calendar/src/storage/store.go
new file mode 100644
index 0000000..44e75bc
--- /dev/null
+++ b/hw12_13_14_15_calendar/src/storage/store.go
@@ -0,0 +1,24 @@
+package store
+
+import (
+	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/config"
+	"github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/storage/event"
+	memorystorage "github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/storage/memory"
+	sqlstorage "github.com/tiburon-777/HW_OTUS/hw12_13_14_15_calendar/src/storage/sql"
+)
+
+type StoreInterface interface {
+	Save(event event.Event) error
+	Update(event event.Event) error
+	Delete(event event.Event) error
+	List() []event.Event
+	Get(id string) (event.Event, bool)
+}
+
+func NewStore(config config.Config) StoreInterface {
+	if config.Storage.In_memory {
+		st := memorystorage.New()
+		return st
+	}
+	return sqlstorage.New()
+}