Name:           snapper-sdboot
Version:        1.0.0
Release:        1%{?dist}
Summary:        Boot entries for snapper snapshots in systemd-boot

License:        MIT
URL:            https://codeberg.org/chf/%{name}
Source0:        https://codeberg.org/chf/%{name}/archive/v%{version}.tar.gz

BuildRequires:  cargo
BuildRequires:  systemd-rpm-macros
Requires:       snapper
Requires:       systemd-boot-unsigned

%description
Generates Boot Loader Specification entries for snapper snapshots on the ESP,
so systemd-boot can boot them, the systemd-boot counterpart of grub-btrfs.

%prep
%autosetup -n %{name}

%build
cargo build --release

%install
install -Dm755 target/release/%{name} %{buildroot}%{_bindir}/%{name}
install -Dm644 dist/%{name}.service %{buildroot}%{_unitdir}/%{name}.service
install -Dm644 dist/%{name}.path %{buildroot}%{_unitdir}/%{name}.path
install -Dm755 dist/95-%{name}.install %{buildroot}%{_prefix}/lib/kernel/install.d/95-%{name}.install
install -Dm644 dist/90-%{name}.conf %{buildroot}%{_prefix}/lib/dracut/dracut.conf.d/90-%{name}.conf
install -Dm755 dist/dracut/module-setup.sh %{buildroot}%{_prefix}/lib/dracut/modules.d/90%{name}/module-setup.sh
install -Dm755 dist/dracut/%{name}-overlay.sh %{buildroot}%{_prefix}/lib/dracut/modules.d/90%{name}/%{name}-overlay.sh
install -Dm644 dist/%{name}.toml %{buildroot}%{_sysconfdir}/%{name}.toml
install -dm755 %{buildroot}%{_sharedstatedir}/%{name}

%post
%systemd_post %{name}.path %{name}.service
# enable on first install, the package is useless without the triggers
if [ $1 -eq 1 ] && [ -d /run/systemd/system ]; then
    systemctl enable %{name}.path %{name}.service >/dev/null 2>&1 || :
fi

%preun
%systemd_preun %{name}.path %{name}.service
if [ $1 -eq 0 ]; then
    %{_bindir}/%{name} clean >/dev/null 2>&1 || :
fi

%postun
%systemd_postun %{name}.path %{name}.service

%posttrans
# rebuild initrds when the overlay module is new or changed
state=%{_sharedstatedir}/%{name}/dracut.sha256
sum=$(cat %{_prefix}/lib/dracut/modules.d/90%{name}/* %{_prefix}/lib/dracut/dracut.conf.d/90-%{name}.conf | sha256sum)
if [ "$sum" != "$(cat "$state" 2>/dev/null)" ]; then
    dracut --force --regenerate-all >/dev/null 2>&1 && echo "$sum" > "$state" || :
fi
# regenerate the entries with the binary just installed
if [ -d /run/systemd/system ] && systemctl -q is-enabled %{name}.service 2>/dev/null; then
    systemctl start --no-block %{name}.path %{name}.service || :
fi

%files
%license LICENSE
%doc docs/README.md
%{_bindir}/%{name}
%{_unitdir}/%{name}.service
%{_unitdir}/%{name}.path
%{_prefix}/lib/kernel/install.d/95-%{name}.install
%{_prefix}/lib/dracut/dracut.conf.d/90-%{name}.conf
%{_prefix}/lib/dracut/modules.d/90%{name}/
%config(noreplace) %{_sysconfdir}/%{name}.toml
%dir %{_sharedstatedir}/%{name}
%ghost %{_sharedstatedir}/%{name}/dracut.sha256