[MM-43649] - Ability for end users to notify admin to upgrade workspace (#20338)

* [MM-43649] - Ability for end users to notify admin to upgrade workspace

* add test case

* move code to app layer

* feedback impl

* feedback impl-1

* feedback impl

* simplify logic

* fix typo and lint

* fix app layers

* Use a single critical section for users notified admin (#20488)

* Use a single critical section for users notifying admin

* change persistence mechanism

* add more tests

* change bot message

* fix translations

* update logic to notify once within cooloff period

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>
Co-authored-by: Nathaniel Allred <neallred@protonmail.com>

app/cloud.go

@@ -4,15 +4,108 @@
 package app
 
 import (
+	"encoding/json"
 	"fmt"
 	"net/http"
+	"strings"
 	"time"
 
+	"github.com/mattermost/mattermost-server/v6/app/request"
 	"github.com/mattermost/mattermost-server/v6/einterfaces"
 	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/shared/i18n"
 	"github.com/mattermost/mattermost-server/v6/shared/mlog"
 )
 
+func (a *App) NotifySystemAdminsToUpgrade(c *request.Context, currentUserTeamID string) *model.AppError {
+	userId := c.Session().Id
+
+	fakeId := strings.ReplaceAll(model.CloudNotifyAdminInfo, "_", "") + "123456"
+
+	// check if already notified
+	notificationPref, err := a.Srv().Store.Preference().Get(fakeId, model.PreferenceCloudUserEphemeralInfo, model.CloudNotifyAdminInfo)
+	if err != nil {
+		mlog.Warn("Unable to get preference cloud_user_ephemeral_info", mlog.Err(err))
+	}
+
+	if notificationPref != nil {
+		info := &model.AdminNotificationUserInfo{}
+		err = json.Unmarshal([]byte(notificationPref.Value), info)
+		if err != nil {
+			mlog.Warn("Unable to Unmarshal", mlog.Err(err))
+		}
+
+		if !model.CanNotify(info.LastNotificationTimestamp) {
+			return model.NewAppError("app.NotifySystemAdminsToUpgrade", "api.cloud.notify_admin_to_upgrade_error.already_notified", nil, "", http.StatusForbidden)
+		}
+	}
+
+	team, appErr := a.GetTeam(currentUserTeamID)
+	if appErr != nil {
+		return appErr
+	}
+
+	sysadmins, appErr := a.GetUsersFromProfiles(&model.UserGetOptions{
+		Page:     0,
+		PerPage:  100,
+		Role:     model.SystemAdminRoleId,
+		Inactive: false,
+	})
+
+	if appErr != nil {
+		return appErr
+	}
+
+	systemBot, appErr := a.GetSystemBot()
+	if appErr != nil {
+		return appErr
+	}
+
+	for _, admin := range sysadmins {
+		T := i18n.GetUserTranslations(admin.Locale)
+		channel, appErr := a.GetOrCreateDirectChannel(c, systemBot.UserId, admin.Id)
+		if appErr != nil {
+			mlog.Warn("Error getting direct channel", mlog.Err(appErr))
+			continue
+		}
+
+		post := &model.Post{
+			Message:   T("api.cloud.upgrade_plan_bot_message", map[string]interface{}{"TeamName": team.Name}),
+			UserId:    systemBot.UserId,
+			ChannelId: channel.Id,
+			Type:      fmt.Sprintf("%sup_notification", model.PostCustomTypePrefix), // webapp will have to create renderer for this custom post type
+		}
+
+		_, appErr = a.CreatePost(c, post, channel, false, true)
+		if appErr != nil {
+			mlog.Warn("Error creating post", mlog.Err(appErr))
+			continue
+		}
+	}
+
+	// mark as done for current user until end of cool off period
+	out, err := json.Marshal(&model.AdminNotificationUserInfo{
+		LastUserIDToNotify:        userId,
+		LastNotificationTimestamp: model.GetMillis(),
+	})
+	if err != nil {
+		mlog.Warn("Unable to Marshal", mlog.Err(err))
+	}
+
+	pref := model.Preference{
+		UserId:   fakeId, // to only have one preference for now and not a preference per user
+		Category: model.PreferenceCloudUserEphemeralInfo,
+		Name:     model.CloudNotifyAdminInfo,
+		Value:    string(out),
+	}
+
+	if err := a.Srv().Store.Preference().Save(model.Preferences{pref}); err != nil {
+		mlog.Warn("Encountered error saving cloud_user_ephemeral_info preference", mlog.Err(err))
+	}
+
+	return nil
+}
+
 type cloudWrapper struct {
 	cloud einterfaces.CloudInterface
 }