# ------------------------------------------------------------------------------
# File manipulation function
# This file is part of the init.sh project
# Copyright (c) 2019-2021 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
# ------------------------------------------------------------------------------
# This file is distributed under 3-clause BSD license.
# The complete license agreement can be obtained at:
# https://opensource.org/licenses/BSD-3-Clause
# ------------------------------------------------------------------------------


# ------------------------------------------------------------------------------
# Define normalised time display, filename friendly
stdtime()
{
    date --rfc-3339=seconds | sed -e 's/ /-/' -e 's/://g'
}
export -f stdtime


# ------------------------------------------------------------------------------
# Backup original installation files
# (or any old files if runned several time on same file)
backupdist()
{
    [[ $# -lt 1 ]] &&
        prnt E "backupdist(): At least one argument is required." &&
        exit 11

    for file in $@; do
        if [[ -f ${file} ]]; then
            local tmstmp=$(stdtime)
            prnt I "Création d'une sauvegarde de ${file} du $tmstmp..."
            cp -av $file ${file}.dist.${tmstmp}
            if [[ $? -ne 0 ]]; then
                prnt E "backupdist(): Échec de copie du fichier."
                die 12
            fi
        else
            prnt E "backupdist(): Le paramètre fournis ($file) n'est pas un fichier."
            die 7
     	fi
    done
}
export -f backupdist


# ------------------------------------------------------------------------------
# Install file to the host (specific first then general)
# Todo: implement wildcard support
installfile()
{
    local filelist=""
    local i=0

    [[ $# -lt 2 ]] && (
        prnt E "installfile(): At least two arguments are required."
        die 11
    )
    [[ $(echo $@ | grep "\*\|\?") ]] && (
        prnt E "installfile(): Wildcards are not authorized."
        die 7
    )

    for arg in $@; do
        if [[ -f $MYPATH/repo/hosts/$HOSTNAME/$arg ]]; then
            filelist="$filelist $MYPATH/repo/hosts/$HOSTNAME/$arg"
        elif [[ -f $MYPATH/repo/common/$arg ]]; then
            filelist="$filelist $MYPATH/repo/common/$arg"
        else
            # Not found in repository, we expect full name
            filelist="$filelist $arg"
        fi
    done
    
    # Empty for just to obtain the target which is the last element of the list
    for i in $filelist; do
        :
    done
    if [[ ! $i == /* ]]; then
        prnt E "installfile(): Target must be on the root filesystem and fuul path must be provided."
        die 13
    fi
    if [[ -d $(dirname $i) ]]; then
        prnt I "Création du répertoire $(dirname $i) d'accueil..."
        mkdir -pv $(dirname $i)
        if [[ $? -ne 0 ]]; then
            prnt E "installfile(): Can't create target dirrectory!"
            die 12
        fi
    fi
    prnt I "Copie des fichiers ${filelist}..."
    cp -av $filelist
    if [[ $? -ne 0 ]]; then
        prnt E "installfile(): Couldn't copy some required files!"
        die 12
    fi
}
export -f installfile

# EOF