##
##  docker-gen.spec -- OpenPKG RPM Package Specification
##  Copyright (c) 2000-2025 OpenPKG Project <http://openpkg.org/>
##
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##  the above copyright notice and this permission notice appear in all
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##
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##  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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##

#   package version
%define       V_opkg  0.7.4
%define       V_dist  20200711

#   package information
Name:         docker-gen
Summary:      Generate Configurations from Docker API Information
URL:          https://github.com/jwilder/docker-gen
Vendor:       Jason Wilder
Packager:     OpenPKG Project
Distribution: OpenPKG Community
Class:        EVAL
Group:        Filesystem
License:      MIT
Version:      %{V_opkg}.%{V_dist}
Release:      20200711

#   list of sources
Source0:      http://download.openpkg.org/components/versioned/docker-gen/docker-gen-%{V_dist}.tar.xz
Source1:      docker-gen.cfg
Source2:      nginx.tmpl
Source3:      index.tmpl
Source4:      rc.docker-gen
Patch0:       docker-gen.patch

#   build information
BuildPreReq:  OpenPKG, openpkg >= 20160101, go
PreReq:       OpenPKG, openpkg >= 20160101, nginx

%description
    docker-gen(8) is a file generator that renders templates using
    Docker API container meta-data.

%track
    prog docker-gen:release = {
        version   = %{V_opkg}
        url       = https://github.com/jwilder/docker-gen/releases
        regex     = (\d+\.\d+\.\d+)\.tar\.gz
    }
    prog docker-gen:snapshot = {
        version   = %{V_dist}
        url       = http://download.openpkg.org/components/versioned/docker-gen/
        regex     = docker-gen-(__VER__)\.tar\.xz
    }

%prep
    %setup -q -n docker-gen
    %patch -p0

%build
    #   build program
    export GOPATH=`pwd`
    go build -v -o docker-gen src/github.com/jwilder/docker-gen/cmd/docker-gen/main.go

%install
    #   create installation hierarchy
    %{l_shtool} mkdir -f -p -m 755 \
        $RPM_BUILD_ROOT%{l_prefix}/sbin \
        $RPM_BUILD_ROOT%{l_prefix}/etc/rc.d \
        $RPM_BUILD_ROOT%{l_prefix}/etc/nginx \
        $RPM_BUILD_ROOT%{l_prefix}/etc/docker-gen \
        $RPM_BUILD_ROOT%{l_prefix}/var/docker-gen/run \
        $RPM_BUILD_ROOT%{l_prefix}/var/docker-gen/log

    #   install program
    %{l_shtool} install -c -s -m 755 \
        docker-gen $RPM_BUILD_ROOT%{l_prefix}/sbin/

    #   install default configuration
    %{l_shtool} install -c -m 644 %{l_value -s -a} \
        %{SOURCE docker-gen.cfg} \
        $RPM_BUILD_ROOT%{l_prefix}/etc/docker-gen/
    %{l_shtool} install -c -m 644 %{l_value -s -a} \
        %{SOURCE nginx.tmpl} \
        %{SOURCE index.tmpl} \
        $RPM_BUILD_ROOT%{l_prefix}/etc/docker-gen/

    #   install run-command script
    %{l_shtool} install -c -m 755 %{l_value -s -a} \
        %{SOURCE rc.docker-gen} \
        $RPM_BUILD_ROOT%{l_prefix}/etc/rc.d/

    #   determine installation files
    %{l_rpmtool} files -v -ofiles -r$RPM_BUILD_ROOT \
        %{l_files_std} \
        '%config %{l_prefix}/etc/docker-gen/*' \
        '%attr(-,%{l_rusr},%{l_rgrp}) %{l_prefix}/var/docker-gen/*'

%files -f files

%clean

%post
    if [ $1 -eq 2 ]; then
        #   after upgrade, restart service
        eval `%{l_rc} docker-gen status 2>/dev/null`
        [ ".$docker_gen_active" = .yes ] && %{l_rc} docker-gen restart
    fi
    exit 0

%preun
    #   before erase, stop service and remove log files
    if [ $1 -eq 0 ]; then
        %{l_rc} docker-gen stop 2>/dev/null
        rm -f $RPM_INSTALL_PREFIX/var/docker-gen/log/* >/dev/null 2>&1 || true
        rm -f $RPM_INSTALL_PREFIX/var/docker-gen/run/* >/dev/null 2>&1 || true
    fi
    exit 0

