#!/usr/bin/sh
#----------------------------------------------------------------------------
# /var/install/bin/sn-log
#
# Creation:     2013-12-21 hb
# Last Update:  $Id$
#
# Copyright (c) 2013-@@YEAR@@ Holger Bruenjes, holgerbruenjes(at)gmx(dot)net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------

# include eislib
. /var/install/include/eislib
. /var/lib/sn/sn.info

color=''
frame=''

if $(grep -qE "^MENU=['\"]/var/install/bin/show-menu['\"]" /etc/config.d/setup)
then
    color='--nocolor'
    frame='--noframe'
fi

# ---------------------------------------------------------------------------
# get logs
# ---------------------------------------------------------------------------
get_logs()
{
    # strip number and extension
    log_files="${1%%.*}"

    # check log files exists
    if ${prime:-false}
    then
        # select all prime log files
        log_file=$(ls -1 | sed 's#.*log\.##; s#\..*$##' | sort -u)
    elif ! ${prime:-false}
    then
        # select all logfiles from prime file 
        log_file=$(ls log.${log_files}* | sed 's#log\.##')
        log_files=''
    fi

    n=0
    for i in ${log_file}
    do
        n=$((${n} + 1))
        eval log_${n}='"${i}"'
    done

    if [ "${n}" -eq 0 ]
    then
        mecho --warn "No logfiles available."
        anykey
        exit 0
    fi
}

# ---------------------------------------------------------------------------
# select log
# ---------------------------------------------------------------------------
select_log()
{
    cd ${SN_LOG_DIR}

    if ${prime:-false}
    then
        # select all prime log files
        get_logs
    fi

    while [ 1 ]
    do
        SN_TITLE="Following log(s) available"
        SN_FLAGS='--indent 12 --spread'
        SN_COLS='60*'
        SN_ROWS=0
        export SN_TITLE
        export SN_FLAGS
        export SN_COLS

        while [ "${SN_ROWS}" -ne "${n}" ]
        do
            SN_ROWS=$((${SN_ROWS} + 1))
            eval SN_${SN_ROWS}_1=\"'${log_'${SN_ROWS}'}'\"
            export SN_${SN_ROWS}_1
            export SN_ROWS
        done

        SN_QUESTION='Select'
        export SN_QUESTION

        ask_tmpfile=$(${MKTEMP} -t XXXXXXXXXXXXX)
        ${CHOOSE} SN 1 > ${ask_tmpfile}
        rc=${?}
        read answer < ${ask_tmpfile}
        rm -f ${ask_tmpfile}

        # if ask break, ask returned 255
        if [ ${rc} = 255 ]
        then
            answer=0
        fi

        if ${prime:-false}
        then
            case "${answer}" in
            '') exit 0     ;;
            0)  exit 127   ;;
            *)
                eval sn_log='${log_'${answer}'}'
                prime=false
                get_logs ${sn_log}
                ;;
            esac
        elif ! ${prime:-false}
        then
            case "${answer}" in
            '') prime=true
                get_logs
                ;;
            0)  exit 127   ;;
            *)
                eval sn_log='${log_'${answer}'}'
                show_log ${sn_log}
                # select all logfiles from prime file 
                get_logs ${sn_log}
                ;;
            esac
        fi
    done
}

# ---------------------------------------------------------------------------
# show log
# ---------------------------------------------------------------------------
show_log()
{
    log_file="log.${1}"

    ${SHOW_DOC} $color $frame --follow --title ${log_file}  ${log_file}
}

# ---------------------------------------------------------------------------
# main
# ---------------------------------------------------------------------------
main()
{
    prime=true
    select_log

    exit 0
}

# ---------------------------------------------------------------------------
# exec main
# ---------------------------------------------------------------------------
main "${@}"

# ---------------------------------------------------------------------------
# end
# ---------------------------------------------------------------------------