#!/bin/sh

set -eu

. "$(dirname "$0")/shared-functions.sh"

testname="$(basename "$0")"
pkgname="libnss-test-$testname"

nss_lines="
hosts before=dns mdns4
hosts before=mdns4 mdns4_minimal [NOTFOUND=return]
hosts remove-only mdns    # In case the user manually added it
"

expected_services="files mdns4_minimal [NOTFOUND=return] mdns4 dns"

echo "Set up and build test packages..."
cd "$AUTOPKGTEST_TMP"
mkdir "$pkgname"
cd "$pkgname"
setup_pkg "$pkgname" "$testname"
build_pkg "$pkgname" "1" "$nss_lines"
build_pkg "$pkgname" "2" "$nss_lines"
cd "$AUTOPKGTEST_TMP"

echo "Set up /etc/nsswitch.conf..."
echo "$NSSWITCH_CONF" > /etc/nsswitch.conf
check_line "hosts" "files dns"

echo "Test that installing the package installs the services..."
dpkg --install "${pkgname}_1_all.deb"
check_line "hosts" "$expected_services"

echo "Test that updating the package does not install the services again..."
dpkg --install "${pkgname}_2_all.deb"
check_line "hosts" "$expected_services"

echo "Test that removing the package removes the services..."
dpkg --remove "$pkgname"
check_line "hosts" "files dns"

echo "Test that installing the package again reinstalls the services..."
dpkg --install "${pkgname}_2_all.deb"
check_line "hosts" "$expected_services"

echo "Test that removing the package again removes the services..."
dpkg --remove "$pkgname"
check_line "hosts" "files dns"

echo "Test that reinstalling the package injects the services..."
dpkg --install "${pkgname}_1_all.deb"
check_line "hosts" "$expected_services"

echo "Manually remove services from /etc/nsswitch.conf..."
echo "$NSSWITCH_CONF" > /etc/nsswitch.conf
check_line "hosts" "files dns"

echo "Test that upgrading the package after modifying nsswitch.conf does not inject the services again..."
dpkg --install "${pkgname}_2_all.deb"
check_line "hosts" "files dns"