pack

#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'
LANG=C

# shellcheck source=../shellib.sh
. "$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")/../shellib.sh"

# Set package metadata
# Prepare package
# Prepare package contents
# Prepare package metadata
# Create package
# Clean up

# Output deb package control
#   #1 ... package name
#   #2 ... full package version
#   #3 ... package architecture
#   #4 ... package section
#   #5 ... package homepage
#   #6 ... package maintainer
#   #7 ... package description
# Output: deb package control
function out_deb_pkg_control() {
    cat <<EOF
Package: $1
Version: $2
Architecture: $3
Section: $4
Homepage: $5
Maintainer: $6
Description: $7
EOF
}

# Pack to a DEB package
function pack_deb() {
    # Prepare package metadata
    local package_name="${CI_PROJECT_NAME:-${PWD##*/}}"
    local package_ver="$1"
    local package_arch='all'
    local package_file="${package_name}_${package_ver}_$package_arch"
    local package_section='libs'
    local package_homepage="${CI_PROJECT_URL:-}"
    if [ -n "${GITLAB_USER_NAME:-}" ]; then
        package_maintainer="$GITLAB_USER_NAME"
        if [ -n "${GITLAB_USER_EMAIL:-}" ]; then
            package_maintainer="$package_maintainer <$GITLAB_USER_EMAIL>"
        fi
    else
        if [ -n "${USER:-}" ]; then
            package_maintainer="$(getent passwd "$USER" | cut -d ':' -f 5 | cut -d ',' -f 1)"
        else
            package_maintainer='Unknown'
        fi
    fi
    package_desc="${CI_PROJECT_TITLE:-${PWD##*/}}
 Simple Bash scripting library."

    # Prepare package content
    local build_dir='build'
    local package_root="$build_dir/$package_file"
    local package_deb_dir="$package_root/DEBIAN"
    if [ ! -f "$build_dir/shellib.sh" ]; then
        err "$build_dir/shellib.sh does not exist, nothing to pack"
        return "$status_err"
    fi

    # Create package content
    mkdir -p "$package_deb_dir"
    local package_lib_dir="$package_root/usr/lib"
    mkdir -p "$package_lib_dir"
    cp "$build_dir/shellib.sh" "$package_lib_dir/shellib.sh"

    # Create control file
    out_deb_pkg_control "$package_name" "$package_ver" "$package_arch" "$package_section" "$package_homepage" "$package_maintainer" "$package_desc" >"$package_deb_dir/control"

    # Create package
    (
        cd "$build_dir" || exit "$status_err"
        dpkg-deb --build --root-owner-group "$package_file"
    )

    # Clean up
    rm -rf "$package_root"
}

# Main
function main {
    if [ -z "${1+x}" ]; then
        err 'Next version expected as the first parameter'
        return "$status_err"
    fi
    pack_deb "$1"
}

# Skip functions execution under test
if [ "${BASH_SOURCE[0]}" == "${0}" ]; then
    main "$@"
fi