#MM-12130 changes for custom service terms (#9450)

* #MM-12130 changes for custom service terms

* Fixed styling

* Added getServiceTerms API

* removed unnecessary panic

* removed custom service terms text from flat config

* reverted user sql store as those changes are no longer needed

* added tests

* Updated a config key to be more standard

* Added copyright info

* Loading service terms only if the feature is enabled

* Loading service terms only if the feature is enabled

* removed unused index

* added createservice termns API

* made a param to bool instead of string

* added createservice termns API

* review fixes

* fixed styling

* Minor refactoring

* removed saveConfig and loadConfig magic

* added empty service terms text check to createServiceTerms API

* refactoed some urls to be terms_of_service instead of service_terms

* removed check for support settings

* changed URLs in tests

* removed unused code

* fixed a bug

* added service termd id in conif

* fixed a test

* review fixes

* minor fixes

* Fixed TestCreateServiceTerms

8 files changed, 122 insertions, 2 deletions

diff --git a/app/admin.go b/app/admin.go
index 3b7f21dda..6055803a5 100644
--- a/app/admin.go
+++ b/app/admin.go
@@ -179,6 +179,7 @@ func (a *App) SaveConfig(cfg *model.Config, sendConfigChangeClusterMessage bool)
 	}
 
 	a.DisableConfigWatch()
+
 	a.UpdateConfig(func(update *model.Config) {
 		*update = *cfg
 	})
diff --git a/app/app.go b/app/app.go
index 1cec749da..dabd00571 100644
--- a/app/app.go
+++ b/app/app.go
@@ -218,6 +218,7 @@ func New(options ...Option) (outApp *App, outErr error) {
 	}
 
 	app.Srv.Store = app.newStore()
+
 	app.AddConfigListener(func(_, current *model.Config) {
 		if current.SqlSettings.EnablePublicChannelsMaterialization != nil && !*current.SqlSettings.EnablePublicChannelsMaterialization {
 			app.Srv.Store.Channel().DisableExperimentalPublicChannelsMaterialization()
diff --git a/app/config.go b/app/config.go
index a63650a58..fde38c13e 100644
--- a/app/config.go
+++ b/app/config.go
@@ -23,6 +23,10 @@ import (
 	"github.com/mattermost/mattermost-server/utils"
 )
 
+const (
+	ERROR_SERVICE_TERMS_NO_ROWS_FOUND = "store.sql_service_terms_store.get.no_rows.app_error"
+)
+
 func (a *App) Config() *model.Config {
 	if cfg := a.config.Load(); cfg != nil {
 		return cfg.(*model.Config)
@@ -242,6 +246,16 @@ func (a *App) AsymmetricSigningKey() *ecdsa.PrivateKey {
 
 func (a *App) regenerateClientConfig() {
 	a.clientConfig = utils.GenerateClientConfig(a.Config(), a.DiagnosticId(), a.License())
+
+	if a.clientConfig["EnableCustomServiceTerms"] == "true" {
+		serviceTerms, err := a.GetLatestServiceTerms()
+		if err != nil {
+			mlog.Err(err)
+		} else {
+			a.clientConfig["CustomServiceTermsId"] = serviceTerms.Id
+		}
+	}
+
 	a.limitedClientConfig = utils.GenerateLimitedClientConfig(a.Config(), a.DiagnosticId(), a.License())
 
 	if key := a.AsymmetricSigningKey(); key != nil {
diff --git a/app/diagnostics.go b/app/diagnostics.go
index f0d6153e6..c84bd7367 100644
--- a/app/diagnostics.go
+++ b/app/diagnostics.go
@@ -263,6 +263,7 @@ func (a *App) trackConfig() {
 		"experimental_limit_client_config":                        *cfg.ServiceSettings.ExperimentalLimitClientConfig,
 		"enable_email_invitations":                                *cfg.ServiceSettings.EnableEmailInvitations,
 		"experimental_channel_organization":                       *cfg.ServiceSettings.ExperimentalChannelOrganization,
+		"custom_service_terms_enabled":                            *cfg.SupportSettings.CustomServiceTermsEnabled,
 	})
 
 	a.SendDiagnostic(TRACK_CONFIG_TEAM, map[string]interface{}{
diff --git a/app/diagnostics_test.go b/app/diagnostics_test.go
index 8d4e57107..8e8c03935 100644
--- a/app/diagnostics_test.go
+++ b/app/diagnostics_test.go
@@ -103,7 +103,7 @@ func TestDiagnostics(t *testing.T) {
 
 		info := ""
 		// Collect the info sent.
-		Loop:
+	Loop:
 		for {
 			select {
 			case result := <-data:
diff --git a/app/service_terms.go b/app/service_terms.go
new file mode 100644
index 000000000..85808ddd4
--- /dev/null
+++ b/app/service_terms.go
@@ -0,0 +1,45 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package app
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+func (a *App) CreateServiceTerms(text, userId string) (*model.ServiceTerms, *model.AppError) {
+	serviceTerms := &model.ServiceTerms{
+		Text:   text,
+		UserId: userId,
+	}
+
+	if _, err := a.GetUser(userId); err != nil {
+		return nil, err
+	}
+
+	result := <-a.Srv.Store.ServiceTerms().Save(serviceTerms)
+	if result.Err != nil {
+		return nil, result.Err
+	}
+
+	serviceTerms = result.Data.(*model.ServiceTerms)
+	return serviceTerms, nil
+}
+
+func (a *App) GetLatestServiceTerms() (*model.ServiceTerms, *model.AppError) {
+	if result := <-a.Srv.Store.ServiceTerms().GetLatest(true); result.Err != nil {
+		return nil, result.Err
+	} else {
+		serviceTerms := result.Data.(*model.ServiceTerms)
+		return serviceTerms, nil
+	}
+}
+
+func (a *App) GetServiceTerms(id string) (*model.ServiceTerms, *model.AppError) {
+	if result := <-a.Srv.Store.ServiceTerms().Get(id, true); result.Err != nil {
+		return nil, result.Err
+	} else {
+		serviceTerms := result.Data.(*model.ServiceTerms)
+		return serviceTerms, nil
+	}
+}
diff --git a/app/user.go b/app/user.go
index c8df2ca26..86f44db4e 100644
--- a/app/user.go
+++ b/app/user.go
@@ -245,7 +245,6 @@ func (a *App) createUser(user *model.User) (*model.User, *model.AppError) {
 		}
 
 		ruser.Sanitize(map[string]bool{})
-
 		return ruser, nil
 	}
 }
@@ -1616,3 +1615,22 @@ func (a *App) UpdateOAuthUserAttrs(userData io.Reader, user *model.User, provide
 
 	return nil
 }
+
+func (a *App) RecordUserServiceTermsAction(userId, serviceTermsId string, accepted bool) *model.AppError {
+	user, err := a.GetUser(userId)
+	if err != nil {
+		return err
+	}
+
+	if accepted {
+		user.AcceptedServiceTermsId = serviceTermsId
+	} else {
+		user.AcceptedServiceTermsId = ""
+	}
+	_, err = a.UpdateUser(user, false)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/app/user_test.go b/app/user_test.go
index 92ff4d62a..a007f93d5 100644
--- a/app/user_test.go
+++ b/app/user_test.go
@@ -524,3 +524,43 @@ func TestPermanentDeleteUser(t *testing.T) {
 		t.Fatal("GetFileInfo after DeleteUser is nil")
 	}
 }
+
+func TestRecordUserServiceTermsAction(t *testing.T) {
+	th := Setup().InitBasic()
+	defer th.TearDown()
+
+	user := &model.User{
+		Email: strings.ToLower(model.NewId()) + "success+test@example.com",
+		Nickname: "Luke Skywalker", // trying to bring balance to the "Force", one test user at a time
+		Username: "luke" + model.NewId(),
+		Password: "passwd1",
+		AuthService: "",
+	}
+	user, err := th.App.CreateUser(user)
+	if err != nil {
+		t.Fatalf("failed to create user: %v", err)
+	}
+
+	defer th.App.PermanentDeleteUser(user)
+
+	serviceTerms, err := th.App.CreateServiceTerms("text", user.Id)
+	if err != nil {
+		t.Fatalf("failed to create service terms: %v", err)
+	}
+
+	err = th.App.RecordUserServiceTermsAction(user.Id, serviceTerms.Id, true)
+	if err != nil {
+		t.Fatalf("failed to record user action: %v", err)
+	}
+
+	nuser, err := th.App.GetUser(user.Id)
+	assert.Equal(t, serviceTerms.Id, nuser.AcceptedServiceTermsId)
+
+	err = th.App.RecordUserServiceTermsAction(user.Id, serviceTerms.Id, false)
+	if err != nil {
+		t.Fatalf("failed to record user action: %v", err)
+	}
+
+	nuser, err = th.App.GetUser(user.Id)
+	assert.Empty(t, nuser.AcceptedServiceTermsId)
+}