Expose public/ API as submodule (#23345)

* model -> public/model

* plugin -> public/plugin

* public/model/utils -> public/utils

* platform/shared/mlog -> public/shared/mlog

* platform/shared/i18n -> public/shared/i18n

* platform/shared/markdown -> public/shared/markdown

* platform/services/timezones -> public/shared/timezones

* channels/einterfaces -> einterfaces

* expose public/ submodule

* go mod tidy

* .github: cache-dependency-path, setup-go-work

* modules-tidy for public/ too

* remove old gomodtidy

server/public/model/upload_session_test.go

@@ -0,0 +1,125 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestUploadSessionIsValid(t *testing.T) {
+	var session UploadSession
+
+	t.Run("empty session should fail", func(t *testing.T) {
+		appErr := session.IsValid()
+		require.NotNil(t, appErr)
+	})
+
+	t.Run("valid session should succeed", func(t *testing.T) {
+		session = UploadSession{
+			Id:         NewId(),
+			Type:       UploadTypeAttachment,
+			CreateAt:   GetMillis(),
+			UserId:     NewId(),
+			ChannelId:  NewId(),
+			Filename:   "test",
+			Path:       "/tmp/test",
+			FileSize:   1024,
+			FileOffset: 0,
+		}
+		appErr := session.IsValid()
+		require.Nil(t, appErr)
+	})
+
+	t.Run("invalid Id should fail", func(t *testing.T) {
+		us := session
+		us.Id = "invalid"
+		appErr := us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.id.app_error", appErr.Id)
+	})
+
+	t.Run("invalid type should fail", func(t *testing.T) {
+		us := session
+		us.Type = "invalid"
+		appErr := us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.type.app_error", appErr.Id)
+	})
+
+	t.Run("invalid CreateAt should fail", func(t *testing.T) {
+		us := session
+		us.CreateAt = 0
+		appErr := us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.create_at.app_error", appErr.Id)
+	})
+
+	t.Run("invalid UserId should fail", func(t *testing.T) {
+		us := session
+		us.UserId = "invalid"
+		appErr := us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.user_id.app_error", appErr.Id)
+	})
+
+	t.Run("invalid ChannelId should fail", func(t *testing.T) {
+		us := session
+		us.ChannelId = "invalid"
+		appErr := us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.channel_id.app_error", appErr.Id)
+	})
+
+	t.Run("ChannelId is not validated if type is not attachment", func(t *testing.T) {
+		us := session
+		us.ChannelId = ""
+		us.Type = UploadTypeImport
+		appErr := us.IsValid()
+		require.Nil(t, appErr)
+	})
+
+	t.Run("invalid Filename should fail", func(t *testing.T) {
+		us := session
+		us.Filename = ""
+		appErr := us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.filename.app_error", appErr.Id)
+	})
+
+	t.Run("invalid Path should fail", func(t *testing.T) {
+		us := session
+		us.Path = ""
+		appErr := us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.path.app_error", appErr.Id)
+	})
+
+	t.Run("invalid FileSize should fail", func(t *testing.T) {
+		us := session
+		us.FileSize = 0
+		appErr := us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.file_size.app_error", appErr.Id)
+
+		us.FileSize = -1
+		appErr = us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.file_size.app_error", appErr.Id)
+	})
+
+	t.Run("invalid FileOffset should fail", func(t *testing.T) {
+		us := session
+		us.FileOffset = us.FileSize + 1
+		appErr := us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.file_offset.app_error", appErr.Id)
+
+		us.FileOffset = -1
+		appErr = us.IsValid()
+		require.NotNil(t, appErr)
+		require.Equal(t, "model.upload_session.is_valid.file_offset.app_error", appErr.Id)
+	})
+}