From a136d733a491863c4b87e906d832be887533ada2 Mon Sep 17 00:00:00 2001
From: Frank Elsinga <frank@elsinga.de>
Date: Sun, 22 Oct 2023 16:31:27 +0200
Subject: [PATCH] rebase

---
 server/backend/migration/2023090510000000.go |  6 +-
 server/backend/migration/20231023000000.go   | 72 ++++++++++++++++++++
 server/backend/migration/migration.go        |  3 +-
 3 files changed, 77 insertions(+), 4 deletions(-)
 create mode 100644 server/backend/migration/20231023000000.go

diff --git a/server/backend/migration/2023090510000000.go b/server/backend/migration/2023090510000000.go
index 92453e62..523c3d5b 100644
--- a/server/backend/migration/2023090510000000.go
+++ b/server/backend/migration/2023090510000000.go
@@ -29,14 +29,14 @@ func (f *Files) TableName() string {
 	return "files"
 }
 
-// migrate2023090510000000
+// migrate20230905100000
 // removes the unused trailer column
 // makes the Cover FK into a not null field
 // renames kino -> movie
 // fixes the id being named kino
-func (m TumDBMigrator) migrate2023090510000000() *gormigrate.Migration {
+func (m TumDBMigrator) migrate20230905100000() *gormigrate.Migration {
 	return &gormigrate.Migration{
-		ID: "migrate2023090510000000",
+		ID: "migrate20230905100000",
 		Migrate: func(tx *gorm.DB) error {
 			// fix the movie table
 			if err := tx.Migrator().RenameTable(&Kino{}, &Movie{}); err != nil {
diff --git a/server/backend/migration/20231023000000.go b/server/backend/migration/20231023000000.go
new file mode 100644
index 00000000..e7d1a6fa
--- /dev/null
+++ b/server/backend/migration/20231023000000.go
@@ -0,0 +1,72 @@
+package migration
+
+import (
+	"github.com/go-gormigrate/gormigrate/v2"
+	"gorm.io/gorm"
+)
+
+type device2stats struct {
+	ChatRoomsActivity  int `gorm:"column:ChatRoomsActivity;default 0;not null"`
+	ChatActivity       int `gorm:"column:ChatActivity;default 0;not null"`
+	WizNavChatActivity int `gorm:"column:WizNavChatActivity;default 0;not null"`
+}
+
+// migrate20231023000000
+// Removes all traces of the chat from the database.
+func (m TumDBMigrator) migrate20231023000000() *gormigrate.Migration {
+	return &gormigrate.Migration{
+		ID: "20231023000000",
+		Migrate: func(tx *gorm.DB) error {
+			// Remove tracking from device2stats
+			if err := tx.Migrator().DropColumn(&device2stats{}, "ChatRoomsActivity"); err != nil {
+				return err
+			}
+			if err := tx.Migrator().DropColumn(&device2stats{}, "ChatActivity"); err != nil {
+				return err
+			}
+			if err := tx.Migrator().DropColumn(&device2stats{}, "WizNavChatActivity"); err != nil {
+				return err
+			}
+
+			// Delete all tables
+			if err := tx.Migrator().DropTable("chat_message"); err != nil {
+				return err
+			}
+			if err := tx.Migrator().DropTable("chat_room2members"); err != nil {
+				return err
+			}
+			return tx.Migrator().DropTable("chat_room")
+		},
+		Rollback: func(tx *gorm.DB) error {
+			// Restore chat_room
+			if err := tx.Exec("create table chat_room(room int auto_increment primary key, name varchar(100) not null, semester varchar(3) null, constraint `Index 2` unique (semester, name));").Error; err != nil {
+				return err
+			}
+
+			// Add tracking from device2stats
+			if err := tx.Migrator().AutoMigrate(&device2stats{}); err != nil {
+				return err
+			}
+
+			// Restore chat_message
+			if err := tx.Exec("create table chat_message (message int auto_increment primary key, member int not null, room int not null, text longtext not null, created datetime not null, signature longtext not null, constraint FK_chat_message_chat_room foreign key (room) references chat_room (room) on update cascade on delete cascade, constraint chat_message_ibfk_1 foreign key (member) references member (member) on update cascade on delete cascade);").Error; err != nil {
+				return err
+			}
+			if err := tx.Exec("create index chat_message_b3c09425 on chat_message (member);").Error; err != nil {
+				return err
+			}
+			if err := tx.Exec("create index chat_message_ca20ebca on chat_message (room);").Error; err != nil {
+				return err
+			}
+
+			// Restore chat_room2members
+			if err := tx.Exec("create table chat_room2members(room2members int auto_increment primary key, room int not null, member int not null, constraint chatroom_id unique (room, member), constraint FK_chat_room2members_chat_room foreign key (room) references chat_room (room) on update cascade on delete cascade, constraint chat_room2members_ibfk_2 foreign key (member) references member (member) on update cascade on delete cascade );").Error; err != nil {
+				return err
+			}
+			if err := tx.Exec("create index chat_chatroom_members_29801a33 on chat_room2members (room);").Error; err != nil {
+				return err
+			}
+			return tx.Exec("create index chat_chatroom_members_b3c09425 on chat_room2members (member);").Error
+		},
+	}
+}
diff --git a/server/backend/migration/migration.go b/server/backend/migration/migration.go
index a0363627..ba48c9a1 100644
--- a/server/backend/migration/migration.go
+++ b/server/backend/migration/migration.go
@@ -49,7 +49,7 @@ func (m TumDBMigrator) Migrate() error {
 		m.migrate20221119131300(),
 		m.migrate20221210000000(),
 		m.migrate20230826000000(),
-		m.migrate2023090510000000(),
+		m.migrate20230905100000(),
 		m.migrate20230912000000(),
 		m.migrate20230904000000(),
 		m.migrate20230825000000(),
@@ -58,6 +58,7 @@ func (m TumDBMigrator) Migrate() error {
 		m.migrate20230904100000(),
 		m.migrate20230826000000(),
 		m.migrate20231003000000(),
+		m.migrate20231023000000(),
 	})
 	err := mig.Migrate()
 	return err