copy_profile

#!/usr/bin/env bash
set -eu
usage() {
    cat << EOF
Usage: $0 PROFILE

ENVIRONMENT:
    PLATFORM  -- Set openWRT platform (Default: TLWR703, examples: TLMR3020)
    TRAIT_DIR -- Set Trait directory (Default traits/)
EOF
    echo
    HIDE_TRAITS="true" bin/available_profiles
}

[ -z "${1:-}"  ] && usage && exit 1

HERE="$(dirname "$(readlink -f "$0")")"
PROFILE_DIR="${HERE}/profiles"
TRAIT_DIR="${TRAIT_DIR:-${HERE}/traits}"
BUILD_DIR="${HERE}/builder/"
PLATFORM="${PLATFORM-TLWR703}"
PROFILE="$PROFILE_DIR/$1"
PKG_FILE="${BUILD_DIR}/root_packages"
OVERLAY_PKG_FILE="${BUILD_DIR}/overlay_packages"
APPEND_FILES="${HERE}/lib/append_files"

indent() {
    while read -r line;do
    yes ' ' | head -"${1:-4}" | tr -d '\n'
    echo "$line"
    done
}

handle_append(){
    (while read -r i ;do
        [ -e "$1/files/$i" ]  && cat "$1/files/$i" >> "$BUILD_DIR/customfiles/$i"
    done) < "${APPEND_FILES}"
}
handle_trait_dir(){
    if [ "$(readlink -f "$TRAIT_DIR" )" = "$1" ];then
        return 0
    else
        # higher level traits supersede more general definitions
        cd "$1"
        #echo "in $CUR" >&2

        handle_trait_dir "$(readlink -f ..)" ||:
        if [ -e "$1/files" ] ;then
            rsync -rl --exclude-from="$APPEND_FILES" "$1/files/"* "$BUILD_DIR/customfiles"
            handle_append "$1"
        fi
        if [ -e "$1/MANIFEST" ];then
            . "$1/MANIFEST"
            printf '%s' "${PACKAGES:-} " >> "$PKG_FILE"
            printf '%s' "${OVERLAY_PACKAGES:-} " >> "$OVERLAY_PKG_FILE"
        fi
    fi

}

build_custom_make(){
    #hack to avoid newlines in build file
    PLATFORM="$1"

    echo "make image PROFILE='$PLATFORM' PACKAGES='$(cat "$PKG_FILE")' FILES=customfiles/" > \
        "$BUILD_DIR/custom_make"
    chmod +x "$BUILD_DIR/custom_make"
}
main (){
    rm -rf "$BUILD_DIR/customfiles"
    rm -f "$OVERLAY_PKG_FILE" "$PKG_FILE"
    mkdir -p "$BUILD_DIR/customfiles"
    echo "Doc from the Profile:" >&2
    grep '^\s*#' "$PROFILE" | indent 2 >&2
    grep -v '^\s*#' "$PROFILE" | while read -r trait;do
        echo "Handling $TRAIT_DIR/$trait" >&2
        handle_trait_dir "$(readlink -f "$TRAIT_DIR/$trait")" ||:
    done
    build_custom_make "$PLATFORM"
}

main "$@"