#!/usr/bin/env bash
source ./functions

#####################
##### DEFAULTS ######
#####################

_image="ath79-generic-19.07.2"
_profile="tplink_archer-c7-v2"
_debug="true" # Turn debugging on by default (useful for testing)

#####################
##### FUNCTIONS #####
#####################
printHelpAndExit () {

    runDebug "${FUNCNAME[0]}"

    cat <<-'EOF'
USAGE:
buildOpenWRT [[OPTION] [VALUE]]...

OPTIONS
    --image, -i OPENWRT_IMAGE
        Default: "ath79-generic-19.07.2"
    --profile, -p PROFILE
        Default: tplink_archer-c7-v2
    --builddir, -b PATH
        Default: Current working directory
    --package
        Add this package to the packages array declared in DEFAULTS
        Supports multiple --package directives
    --ssh-backup SSH_PATH
        Example: root@192.168.1.1
    --backup PATH
        Add this file or directory to the packages array declared in DEFAULTS
    --debug, -d
    --help, -h
EOF
        # Exit using passed exit code
        [[ -z $1 ]] && exit 0 || exit "$1"
}


parseInput () {

    runDebug "${FUNCNAME[0]}"

    if _input=$(getopt -o +i:p:b:dh -l image:,profile:,builddir:,ssh-backup:,backup:,package:,debug,help -- "$@"); then
        eval set -- "$_input"
        while true; do
            case "$1" in
                --image|-i)
                    shift && _image="$1"
                    ;;
                --profile|-p)
                    shift && _profile="$1"
                    ;;
                --package)
                    shift && _packages+=("$1")
                    ;;
                --builddir|-b)
                    shift && _builddir="$1"
                    ;;
                --ssh-backup)
                    shift && _ssh_backup="$1"
                    ;;
                --backup)
                    shift && _backedup+=("$1")
                    ;;
                --debug|-d)
                    echo "Debugging on"
                    _debug="true"
                    ;;
                --help|-h)
                    _printHelpAndExit 0
                    ;;
                --)
                    shift
                    break
                    ;;
            esac
            shift
        done
    else
        echo "Incorrect options provided"
        printHelpAndExit 1
    fi
}


mkDirs () {

    runDebug "${FUNCNAME[0]}"

    [[ ! -d "$_filesroot" ]] && \
        mkdir -p "$_filesroot"

    [[ ! -d "$_builddir/bin" ]] && \
        mkdir -p "$_builddir/bin"


    # fix SELinux contexts
    chcon -t container_file_t -R "$_builddir/bin"
    chcon -t container_file_t -R "$_filesroot"
}


__main() {

    parseInput "$@"

    mkDirs

    [[ -n $_ssh_backup ]] && sshBackup

    podman run \
            --rm \
            --userns="keep-id" \
            -v "$_builddir/bin/:/home/build/openwrt/bin" \
            -v "$_filesroot:$_filesroot" \
            openwrtorg/imagebuilder:"$_image" \
            make image PROFILE="$_profile" PACKAGES="${_packages[*]}" FILES="$_filesroot"
}

__main "$@"