chore:Chat removal (#195)

* removed all components

* added a migration to remove the chat variabnt from the cronjob

* added the missing migration to the list of migrations

server/backend/cron/cronjobs.go

@@ -31,7 +31,6 @@ const (
 	IOSActivityReset         = "iosActivityReset"
 
 	/* MensaType      = "mensa"
-	ChatType       = "chat"
 	KinoType       = "kino"
 	RoomfinderType = "roomfinder"
 	AlarmType      = "alarm" */
@@ -107,8 +106,6 @@ func (c *CronService) Run() error {
 					TODO: Implement handlers for other cronjobs
 					case MensaType:
 						g.Go(func() error { return c.mensaCron() })
-					case ChatType:
-						g.Go(func() error { return c.chatCron() })
 					case KinoType:
 						g.Go(func() error { return c.kinoCron() })
 					case RoomfinderType:

server/backend/migration/20230825000000.go

@@ -0,0 +1,25 @@
+package migration
+
+import (
+	"github.com/TUM-Dev/Campus-Backend/server/model"
+	"github.com/go-gormigrate/gormigrate/v2"
+	"gorm.io/gorm"
+)
+
+// migrate20230825000000
+// Removes the ability to run chat cronjobs
+func (m TumDBMigrator) migrate20230825000000() *gormigrate.Migration {
+	return &gormigrate.Migration{
+		ID: "20230825000000",
+		Migrate: func(tx *gorm.DB) error {
+			// deactivete the crontab (Rollback deletes this from the enum)
+			// given that previously, not cronjobs for this type existed there is no need to remove offending entries first
+			return SafeEnumRollback(tx, &model.Crontab{}, "type", "chat")
+		},
+		Rollback: func(tx *gorm.DB) error {
+			// activete the crontab (Migrate adds this from to the enum)
+			// given that previously, not cronjobs for this type existed there is no need to add entries first
+			return SafeEnumMigrate(tx, &model.Crontab{}, "type", "chat")
+		},
+	}
+}

server/backend/migration/migration.go

@@ -42,6 +42,7 @@ func (m TumDBMigrator) Migrate() error {
 		m.migrate20221119131300(),
 		m.migrate20221210000000(),
 		m.migrate20230904000000(),
+		m.migrate20230825000000(),
 	})
 	err := mig.Migrate()
 	return err

server/model/crontab.go

@@ -18,7 +18,7 @@ type Crontab struct {
 	//[ 2] lastRun                                        int                  null: false  primary: false  isArray: false  auto: false  col: int             len: -1      default: [0]
 	LastRun int32 `gorm:"column:lastRun;type:int;default:0;" json:"last_run"`
 	//[ 3] type                                           char(10)             null: true   primary: false  isArray: false  auto: false  col: char            len: 10      default: []
-	Type null.String `gorm:"column:type;type:enum ('news', 'mensa', 'chat', 'kino', 'roomfinder', 'alarm', 'fileDownload','dishNameDownload','averageRatingComputation', 'iosNotifications', 'iosActivityReset', 'canteenHeadCount');" json:"type"`
+	Type null.String `gorm:"column:type;type:enum ('news', 'mensa', 'kino', 'roomfinder', 'alarm', 'fileDownload','dishNameDownload','averageRatingComputation', 'iosNotifications', 'iosActivityReset', 'canteenHeadCount');" json:"type"`
 	//[ 4] id                                             int                  null: true   primary: false  isArray: false  auto: false  col: int             len: -1      default: []
 	ID null.Int `gorm:"column:id;type:int;" json:"id"`
 }