Guest accounts feature (#11428)

* MM-14139: Creating permissions for invite/promote/demote guests (#10778)

* MM-14139: Creating permissions for invite/promote/demote guests

* Fixing tests

* Adding invite guest api endpoint (#10792)

* Adding invite guest api endpoint

* Adding i18n

* Adding some tests

* WIP

* Migrating Token.Extra info to bigger size (2048)

* Fixing tests

* Adding client function for invite guests

* Adding send guests invites tests

* Renaming file from guest to guest_invite

* Adding Promote/Demote users from/to guest endpoints (#10791)

* Adding Promote/Demote users from/to guest endpoints

* Adding i18n translations

* Adding the client functions

* Using getQueryBuilder function

* Addressing PR review comments

* Adding default channels to users on promte from guest (#10851)

* Adding default channels to users on promte from guest

* Addressing PR review comments

* Fixing merge problems

* Sending websockets events on promote/demote (#11403)

* Sending websockets events on promote/demote

* Fixing merge problems

* Fixing govet shadowing problem

* Fixing feature branch tests

* Avoiding leaking users data through websockets for guest accounts (#11489)

* Avoiding leaking users data through websockets for guest accounts

* Adding tests and fixing code error

* Fixing i18n

* Allow to enable/disable guests and other extra config settings (#11481)

* Allow to enable/disable guests and other extra config settings

* Fixing tests and moving license and config validation to api level

* Update api4/role_test.go

Co-Authored-By: George Goldberg <george@gberg.me>

* Update api4/role_test.go

Co-Authored-By: George Goldberg <george@gberg.me>

* Fixing typo

* fixing tests

* Managing correctly the guest channel leave behavior (#11578)

* MM-15134: Removing guests from teams or system on leave channels if needed

* WIP

* No deactivating the guest user when leave the last team

* Adding a couple of tests

* Fixing shadow variables

* Fixing tests

* fixing tests

* fixing shadow variables

* Adding guest counts for channel stats (#11646)

* Adding guest counts for channel stats

* Adding tests

* Fixing tests

* Fixing guest domain restrictions (#11660)

* Adding needed migration for the database

* Fixing migration

api4/role_test.go

@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 
 	"github.com/mattermost/mattermost-server/model"
 )
@@ -193,7 +194,9 @@ func TestPatchRole(t *testing.T) {
 	CheckNotImplementedStatus(t, resp)
 
 	// Add a license.
-	th.App.SetLicense(model.NewTestLicense())
+	license := model.NewTestLicense()
+	license.Features.GuestAccountsPermissions = model.NewBool(false)
+	th.App.SetLicense(license)
 
 	// Try again, should succeed
 	received, resp = th.SystemAdminClient.PatchRole(role.Id, patch)
@@ -205,4 +208,25 @@ func TestPatchRole(t *testing.T) {
 	assert.Equal(t, received.Description, role.Description)
 	assert.EqualValues(t, received.Permissions, []string{"manage_system", "manage_incoming_webhooks", "manage_outgoing_webhooks"})
 	assert.Equal(t, received.SchemeManaged, role.SchemeManaged)
+
+	t.Run("Check guest permissions editing without E20 license", func(t *testing.T) {
+		license := model.NewTestLicense()
+		license.Features.GuestAccountsPermissions = model.NewBool(false)
+		th.App.SetLicense(license)
+
+		guestRole, err := th.App.Srv.Store.Role().GetByName("system_guest")
+		require.Nil(t, err)
+		received, resp = th.SystemAdminClient.PatchRole(guestRole.Id, patch)
+		CheckNotImplementedStatus(t, resp)
+	})
+
+	t.Run("Check guest permissions editing with E20 license", func(t *testing.T) {
+		license := model.NewTestLicense()
+		license.Features.GuestAccountsPermissions = model.NewBool(true)
+		th.App.SetLicense(license)
+		guestRole, err := th.App.Srv.Store.Role().GetByName("system_guest")
+		require.Nil(t, err)
+		_, resp = th.SystemAdminClient.PatchRole(guestRole.Id, patch)
+		CheckNoError(t, resp)
+	})
 }