From fce082bae7c1c2ea46d938180b8fcc73360e3399 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 10:29:09 +0200
Subject: Adding internal preseed option to select os identification.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 debian/base-files.install   |  8 ++++----
 debian/base-files.templates |  6 ++++++
 debian/postinst.in          | 32 ++++++++++++++++++++++++++++++++
 debian/rules                |  4 ++++
 4 files changed, 46 insertions(+), 4 deletions(-)
 create mode 100644 debian/base-files.templates

diff --git a/debian/base-files.install b/debian/base-files.install
index 93be954..94b79b5 100644
--- a/debian/base-files.install
+++ b/debian/base-files.install
@@ -1,7 +1,7 @@
 debian/local/base-files/issue /etc
 debian/local/base-files/issue.net /etc
 debian/local/base-files/motd /usr/share/base-files
-debian/local/base-files/os-release /etc
-debian/local/base-files/progress-linux_version /etc
-debian/local/dpkg/progress-linux /etc/dpkg/origins
-debian/local/lsb-release/lsb-release /etc
+debian/local/base-files/os-release /usr/share/base-files/progress-linux
+debian/local/base-files/progress-linux_version /usr/share/base-files/progress-linux
+debian/local/dpkg/progress-linux /usr/share/base-files/progress-linux
+debian/local/lsb-release/lsb-release /usr/share/base-files/progress-linux
diff --git a/debian/base-files.templates b/debian/base-files.templates
new file mode 100644
index 0000000..68c1aa7
--- /dev/null
+++ b/debian/base-files.templates
@@ -0,0 +1,6 @@
+Template: base-files/os-identification
+Type: select
+Choices-C: debian, progress-linux
+Choices: Debian, Progress Linux
+Default: progress-linux
+Description: operating system identification data
diff --git a/debian/postinst.in b/debian/postinst.in
index 0ca10b6..bf2bd4e 100644
--- a/debian/postinst.in
+++ b/debian/postinst.in
@@ -114,3 +114,35 @@ if [ "$1" = "configure" ] && [ "$2" != "" ]; then
     install_directory mnt 755 root
   fi
 fi
+
+case "${1}" in
+	configure)
+		. /usr/share/debconf/confmodule
+
+		db_get base-files/os-identification
+		OS_IDENTIFICATION="${RET}" # select (w/o empty)
+
+		db_stop
+
+		rm -f /etc/lsb-release
+		rm -f /usr/lib/os-release
+		rm -f /etc/dpkg/origins/default
+		rm -f /etc/dpkg/origins/progress-linux
+		rm -f /etc/progress-linux_version
+
+		case "${OS_IDENTIFICATION}" in
+			debian)
+				cp /usr/share/base-files/debian/os-release /usr/lib/os-release
+				ln -s debian /etc/dpkg/origins/default
+				;;
+
+			progress-linux)
+				cp /usr/share/base-files/progress-linux/lsb-release /etc/lsb-release
+				cp /usr/share/base-files/progress-linux/os-release /usr/lib/os-release
+				cp /usr/share/base-files/progress-linux/progress-linux /etc/dpkg/origins/progress-linux
+				ln -s progress-linux /etc/dpkg/origins/default
+				cp /usr/share/base-files/progress-linux/progress-linux_version /etc/progress-linux_version
+				;;
+		esac
+		;;
+esac
diff --git a/debian/rules b/debian/rules
index 3b8f84d..5f8cc31 100755
--- a/debian/rules
+++ b/debian/rules
@@ -35,6 +35,10 @@ endif
 	mv $(DESTDIR)/etc/os-release $(DESTDIR)/usr/lib/os-release
 	ln -s ../usr/lib/os-release $(DESTDIR)/etc/os-release
 
+execute_after_dh_auto_install:
+	mkdir -p $(DESTDIR)/usr/share/base-files/debian
+	mv $(DESTDIR)/usr/lib/os-release $(DESTDIR)/usr/share/base-files/debian/os-release
+
 override_dh_installchangelogs:
 	dh_installchangelogs --no-trim
 
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