#146 Terms of Service Phase 2 (#9731)

* #132 added UserTermsOfService model

* #132 added UserTermsOfService model

* #132 added logic to save user TOS data in a new table

* #132 Added logic to save and delete user TOS. Updated user TOS action logic

* #132 updated store mocks

* #132 added tests

* #132 removed cache from UserTermsOfService SQL store

* #132 fixed styling and license check

* #132 added message translations in en.json

* #132 fixed save user TOS logic to work second time as well

* #132 removed User.AcceptedTermsOfService colum and migrated accepted TOS data into new table

* #132 fixed formatting

* #132 fixed formatting

* #146 added field 'mandatory' to terms of service

* #146 updated tests

* #146 added getLatestTermsOfService API

* #146 Added tests

* #146 fixed styling

* #146 removed code for managing mandatory/optional TOS

* #146 Added TOS re-acceptance period config

* #146 fixed styling

* #146 removed some code left for debugging

* #146 added TOS re-acceptance period in config

* #146 fixed a json name from service_terms to terms_of_service

* #146 Minor refactoring and added TOS re-acceptance period to diagnistics

* Fixed style

* Updated upgraded script to keep app backward compatible

model/user_terms_of_service.go

@@ -0,0 +1,61 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+)
+
+type UserTermsOfService struct {
+	UserId           string `json:"user_id"`
+	TermsOfServiceId string `json:"terms_of_service_id"`
+	CreateAt         int64  `json:"create_at"`
+}
+
+func (ut *UserTermsOfService) IsValid() *AppError {
+	if len(ut.UserId) != 26 {
+		return InvalidUserTermsOfServiceError("user_id", ut.UserId)
+	}
+
+	if len(ut.TermsOfServiceId) != 26 {
+		return InvalidUserTermsOfServiceError("terms_of_service_id", ut.UserId)
+	}
+
+	if ut.CreateAt == 0 {
+		return InvalidUserTermsOfServiceError("create_at", ut.UserId)
+	}
+
+	return nil
+}
+
+func (ut *UserTermsOfService) ToJson() string {
+	b, _ := json.Marshal(ut)
+	return string(b)
+}
+
+func (ut *UserTermsOfService) PreSave() {
+	if ut.UserId == "" {
+		ut.UserId = NewId()
+	}
+
+	ut.CreateAt = GetMillis()
+}
+
+func UserTermsOfServiceFromJson(data io.Reader) *UserTermsOfService {
+	var userTermsOfService *UserTermsOfService
+	json.NewDecoder(data).Decode(&userTermsOfService)
+	return userTermsOfService
+}
+
+func InvalidUserTermsOfServiceError(fieldName string, userTermsOfServiceId string) *AppError {
+	id := fmt.Sprintf("model.user_terms_of_service.is_valid.%s.app_error", fieldName)
+	details := ""
+	if userTermsOfServiceId != "" {
+		details = "user_terms_of_service_user_id=" + userTermsOfServiceId
+	}
+	return NewAppError("UserTermsOfService.IsValid", id, nil, details, http.StatusBadRequest)
+}