From b32b5ad6e97044dd410d2717340631388bcb631b Mon Sep 17 00:00:00 2001
From: DL6ER <dl6er@dl6er.de>
Date: Fri, 20 Dec 2019 00:09:10 +0000
Subject: [PATCH 1/3] Update gravity database to version 8. This enforces
 uniqueness on the group name.

Signed-off-by: DL6ER <dl6er@dl6er.de>
---
 .../Scripts/database_migration/gravity-db.sh  |  7 ++++++
 .../database_migration/gravity/7_to_8.sql     | 23 +++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 advanced/Scripts/database_migration/gravity/7_to_8.sql

diff --git a/advanced/Scripts/database_migration/gravity-db.sh b/advanced/Scripts/database_migration/gravity-db.sh
index 28054643..6dc88bf3 100644
--- a/advanced/Scripts/database_migration/gravity-db.sh
+++ b/advanced/Scripts/database_migration/gravity-db.sh
@@ -72,4 +72,11 @@ upgrade_gravityDB(){
 		sqlite3 "${database}" < "${scriptPath}/6_to_7.sql"
 		version=7
 	fi
+	if [[ "$version" == "7" ]]; then
+		# This migration script recreated the group table
+		# to ensure uniqueness on the group name
+		echo -e "  ${INFO} Upgrading gravity database from version 7 to 8"
+		sqlite3 "${database}" < "${scriptPath}/7_to_8.sql"
+		version=7
+	fi
 }
diff --git a/advanced/Scripts/database_migration/gravity/7_to_8.sql b/advanced/Scripts/database_migration/gravity/7_to_8.sql
new file mode 100644
index 00000000..8f79bde8
--- /dev/null
+++ b/advanced/Scripts/database_migration/gravity/7_to_8.sql
@@ -0,0 +1,23 @@
+.timeout 30000
+
+PRAGMA FOREIGN_KEYS=OFF;
+
+BEGIN TRANSACTION;
+
+ALTER TABLE "group" RENAME TO "group__";
+
+CREATE TABLE "group"
+(
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	enabled BOOLEAN NOT NULL DEFAULT 1,
+	name TEXT UNIQUE NOT NULL,
+	description TEXT
+);
+
+INSERT OR IGNORE INTO "group" SELECT * FROM "group__";
+
+DROP TABLE "group__";
+
+UPDATE info SET value = 8 WHERE property = 'version';
+
+COMMIT;

From e589e665a785142e9c22383a6089f8810d36027b Mon Sep 17 00:00:00 2001
From: DL6ER <dl6er@dl6er.de>
Date: Fri, 20 Dec 2019 00:14:58 +0000
Subject: [PATCH 2/3] Also add date_added and date_modified fields to group
 table.

Signed-off-by: DL6ER <dl6er@dl6er.de>
---
 advanced/Scripts/database_migration/gravity-db.sh      | 3 ++-
 advanced/Scripts/database_migration/gravity/7_to_8.sql | 9 ++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/advanced/Scripts/database_migration/gravity-db.sh b/advanced/Scripts/database_migration/gravity-db.sh
index 6dc88bf3..bc650d3f 100644
--- a/advanced/Scripts/database_migration/gravity-db.sh
+++ b/advanced/Scripts/database_migration/gravity-db.sh
@@ -75,8 +75,9 @@ upgrade_gravityDB(){
 	if [[ "$version" == "7" ]]; then
 		# This migration script recreated the group table
 		# to ensure uniqueness on the group name
+		# We also add date_added and date_modified columns
 		echo -e "  ${INFO} Upgrading gravity database from version 7 to 8"
 		sqlite3 "${database}" < "${scriptPath}/7_to_8.sql"
-		version=7
+		version=8
 	fi
 }
diff --git a/advanced/Scripts/database_migration/gravity/7_to_8.sql b/advanced/Scripts/database_migration/gravity/7_to_8.sql
index 8f79bde8..0e58408e 100644
--- a/advanced/Scripts/database_migration/gravity/7_to_8.sql
+++ b/advanced/Scripts/database_migration/gravity/7_to_8.sql
@@ -11,10 +11,17 @@ CREATE TABLE "group"
 	id INTEGER PRIMARY KEY AUTOINCREMENT,
 	enabled BOOLEAN NOT NULL DEFAULT 1,
 	name TEXT UNIQUE NOT NULL,
+	date_added INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	date_modified INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
 	description TEXT
 );
 
-INSERT OR IGNORE INTO "group" SELECT * FROM "group__";
+CREATE TRIGGER tr_group_update AFTER UPDATE ON "group"
+    BEGIN
+      UPDATE "group" SET date_modified = (cast(strftime('%s', 'now') as int)) WHERE id = NEW.id;
+    END;
+
+INSERT OR IGNORE INTO "group" (id,enabled,name,description) SELECT id,enabled,name,description FROM "group__";
 
 DROP TABLE "group__";
 

From eda7f40fefc4717e5cebc40f13a03cbb18ab492c Mon Sep 17 00:00:00 2001
From: DL6ER <dl6er@dl6er.de>
Date: Fri, 20 Dec 2019 00:42:59 +0000
Subject: [PATCH 3/3] Reinstall trigger that prevents group zero from being
 deleted.

Signed-off-by: DL6ER <dl6er@dl6er.de>
---
 advanced/Scripts/database_migration/gravity/7_to_8.sql | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/advanced/Scripts/database_migration/gravity/7_to_8.sql b/advanced/Scripts/database_migration/gravity/7_to_8.sql
index 0e58408e..412475da 100644
--- a/advanced/Scripts/database_migration/gravity/7_to_8.sql
+++ b/advanced/Scripts/database_migration/gravity/7_to_8.sql
@@ -21,6 +21,11 @@ CREATE TRIGGER tr_group_update AFTER UPDATE ON "group"
       UPDATE "group" SET date_modified = (cast(strftime('%s', 'now') as int)) WHERE id = NEW.id;
     END;
 
+CREATE TRIGGER tr_group_zero AFTER DELETE ON "group"
+    BEGIN
+      INSERT OR IGNORE INTO "group" (id,enabled,name) VALUES (0,1,'Unassociated');
+    END;
+
 INSERT OR IGNORE INTO "group" (id,enabled,name,description) SELECT id,enabled,name,description FROM "group__";
 
 DROP TABLE "group__";