NBash

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#!/bin/sh
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#
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# Copyright (C) 2023  Etersoft
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# Copyright (C) 2023  Vitaly Lipatov <lav@etersoft.ru>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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EHOG='\(apt-get\|rpm\)'
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JCHAN='-t apt-get -t rpm'
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__alt_epm_history_journal()
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{
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    a= journalctl $JCHAN
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}
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__alt_epm_history_uniq()
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{
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    __alt_epm_history_journal | grep "$EHOG\[[0-9][0-9]*\]:" | sed -e "s@.*$EHOG\[\([0-9][0-9]*\)\]: .*@\2@" | uniq | tac
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}
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# args: pid, removed|installed
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__alt_epm_history_select()
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{
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    local pid="$1"
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    local verb="$2"
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    __alt_epm_history_journal | grep "$EHOG\[$pid\]: .*$verb" | sed -e "s@.*$EHOG\[[0-9][0-9]*\]: @@" | cut -d" " -f 1
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}
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_alt_epm_history_date()
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{
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    local pid="$1"
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    __alt_epm_history_journal | grep "$EHOG\[$pid\]: " | head -n1 | cut -d" " -f 1-3,5 | sed -e 's|:$||'
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}
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_alt_epm_history_print_group()
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{
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    local i
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    if [ -n "$2" ] ; then
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        echo
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        echo "$1 session:"
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        shift
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    else
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        return
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    fi
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    for i in $* ; do
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        echo "    $i"
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    done
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}
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__alt_epm_history_removed()
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{
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    echo "Removed packages history:"
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    __alt_epm_history_uniq | while read pid ; do
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        date="$(_alt_epm_history_date $pid)"
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        removed="$(epm print shortname for $(__alt_epm_history_select $pid "removed") )"
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        installed="$(epm print shortname for $(__alt_epm_history_select $pid "installed") )"
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        _alt_epm_history_print_group "$date" $(estrlist exclude "$installed" "$removed")
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    done
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}
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__alt_epm_history_installed()
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{
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    echo "Installed packages history:"
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    __alt_epm_history_uniq | while read pid ; do
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        date="$(_alt_epm_history_date $pid)"
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        #epm print shortname for $(__alt_epm_history_select $pid "installed") | sed -e "s|^|    |"
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        removed="$(epm print shortname for $(__alt_epm_history_select $pid "removed") )"
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        installed="$(epm print shortname for $(__alt_epm_history_select $pid "installed") )"
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        _alt_epm_history_print_group "$date" $(estrlist exclude "$removed" "$installed")
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    done
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}
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__alt_epm_history_updated()
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{
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    echo "Updated packages history:"
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    __alt_epm_history_uniq | while read pid ; do
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        date="$(_alt_epm_history_date $pid)"
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        #epm print shortname for $(__alt_epm_history_select $pid "installed") | sed -e "s|^|    |"
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        removed="$(epm print shortname for $(__alt_epm_history_select $pid "removed") )"
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        installed="$(epm print shortname for $(__alt_epm_history_select $pid "installed") )"
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        _alt_epm_history_print_group "$date" $(estrlist intersection "$removed" "$installed")
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    done
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}
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epm_history_help()
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{
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    echo "package management history"
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            get_help HELPCMD $SHAREDIR/epm-history
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    cat <<EOF
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Examples:
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  epm history
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  epm history --removed
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EOF
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}
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epm_history()
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{
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if [ $PMTYPE = "apt-rpm" ] ; then
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    case "$1" in
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        "-h"|"--help"|"help")      # HELPCMD: help
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            epm_history_help
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            return
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            ;;
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        --installed)               # HELPCMD: print only new installed packages
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            __alt_epm_history_installed
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            return
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            ;;
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        --removed)                 # HELPCMD: print only removed packages
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            __alt_epm_history_removed
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            return
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            ;;
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        --updated)                 # HELPCMD: print only updated packages
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            __alt_epm_history_updated
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            return
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            ;;
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        --list)                    # HELPCMD: (or empty) print all history entries
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            docmd journalctl $JCHAN
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            return
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            ;;
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        "")
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            ;;
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        *)
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            fatal "Unknown option $1. Use epm history --help to get help."
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    esac
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fi
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[ -z "$*" ] || fatal "No arguments are allowed here"
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case $PMTYPE in
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    apt-rpm)
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        docmd journalctl $JCHAN -r
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        ;;
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    apt-dpkg)
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        docmd cat /var/log/dpkg.log
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        ;;
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    dnf-rpm)
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        sudocmd dnf history
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        ;;
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    eopkg)
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        sudocmd eopkg history
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        ;;
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    zypper-rpm)
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        docmd cat /var/log/zypp/history
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        ;;
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    pacman)
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        docmd cat /var/log/pacman.log
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        ;;
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    emerge)
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        docmd cat /var/log/portage
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        ;;
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    *)
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        fatal "Have no suitable command for $PMTYPE"
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        ;;
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esac
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}
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