#!/usr/bin/env bash

export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:${PATH}"
export PATH="${HOME}/.local/bin:${PATH}"

# directory where the script is located, so we can source files regardless of where PWD is
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
source "${DIR}/.bash_colors"


: ${KEYS_DIR="$DIR"}
: ${LINK_DIR="${DIR}/by-id"}

: ${KEY_TYPES="asc gpg"}
: ${EXCLUDED="combined.asc combo.asc combined.gpg combo.gpg"}
: ${QUIET=0}
: ${DRY_RUN=0}

KEY_TYPES=($KEY_TYPES)
EXCLUDED=($EXCLUDED)

KEY_LIST=()

for t in "${KEY_TYPES[@]}"; do
    KEY_LIST+=( $(find "$KEYS_DIR" -name "*.${t}" | grep -v "$LINK_DIR") )
done

qmsg() {
    (( QUIET )) || >&2 msg "$@" || true
}

(( DRY_RUN )) && qmsg yellow " [...] DRY_RUN is true (1) - not actually linking files!"

skip=0
for l in "${KEY_LIST[@]}"; do
    for xl in "${EXCLUDED[@]}"; do
        flname="$(basename "$l")"
        fdname="$(basename $(dirname "$l"))"
        if [[ "$flname" == "$xl" ]]; then
            qmsg yellow " [!!!] Filename '$flname' is in excluded list! Skipping...\n"
            skip=1
        fi
        if [[ "$fdname" == "$xl" ]]; then
            qmsg yellow " [!!!] Foldername '$fdname' is in excluded list! Skipping...\n"
            skip=1
        fi
    done
    if (( skip )); then
        skip=0
        continue
    fi
    
    echo "$l" | grep -Eqi '\.gpg$' && lkext='.gpg' || lkext='.asc'
    rellink="$(realpath --relative-to="$LINK_DIR" "$l")"
    fgprint="$(gpginfo -R "$l" | jq -r '.fingerprint')"
    kkeyid="$(gpginfo -R "$l" | jq -r '.keyid')"
    kuserid="$(gpginfo -R "$l" | jq -r '.uid')"
    qmsg bold magenta " >>> Processing key '${l}' for user ID: $kuserid \n"
    if [[ -n "$fgprint" ]]; then
        lkpath="${LINK_DIR}/${fgprint}${lkext}"
        qmsg bold cyan "     --> Linking GPG key to fingerprint:${RESET} $rellink -> $lkpath"
        (( DRY_RUN )) || ln -f -s "$rellink" "$lkpath"
    fi
    if [[ -n "$kkeyid" ]]; then
        lkpath="${LINK_DIR}/${kkeyid}${lkext}"
        qmsg bold cyan "     --> Linking GPG key to Key ID: $rellink -> $lkpath"
        (( DRY_RUN )) || ln -f -s "$rellink" "$lkpath"
    fi
    qmsg "\n"

done


qmsg bold green "\n\n [++++++] Finished linking key files into ID index folder:${RESET} $LINK_DIR ${BOLD}${GREEN}++++++\n"