feat: debian install hooks

Pre install check and creates the movies db folder. Pre remove only show
a warning about movies db folder.

.goreleaser.yaml

@@ -46,6 +46,9 @@ nfpms:
     license: MIT
     formats:
       - deb
+    scripts:
+      preinstall: "env/debian/pre-install.sh"
+      preremove: "env/debian/pre-remove.sh"
 
 checksum:
   name_template: '{{ .ProjectName }}_checksums.txt'

env/debian/pre-install.sh

@@ -0,0 +1,33 @@
+#!/bin/sh
+
+before_install() {
+    echo "- creating database folder"
+    mkdir -p /var/lib/movies-db
+}
+
+before_update() {
+    if [ ! -d "/var/lib/movies-db" ]
+    then
+        echo "- creating database folder"
+        mkdir -p /var/lib/movies-db
+    fi
+}
+
+
+if [ "${1}" = "install" -a -z "${2}" ]
+then
+	before_install
+	exit 0
+fi
+
+if [ "${1}" = "upgrade" -a -n "${2}" ]
+then
+	before_update
+	exit 0
+fi
+
+if echo "${1}" | grep -E -q "(abort|fail)"
+then
+    echo "failed to install before the pre-installation script was run." >&2
+	exit 1
+fi

env/debian/pre-remove.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+before_remove() {
+    if [ -d "/var/lib/movies-db" ]
+    then
+        echo "- database folder exists and won't be removed"
+    fi
+}
+
+
+if [ "${1}" = "remove" -a -z "${2}" ]
+then
+	before_remove
+	exit 0
+fi
+
+if echo "${1}" | grep -E -q "(abort|fail)"
+then
+	echo "failed to install before the pre-removal script was run." >&2
+	exit 1
+fi