#!/bin/sh -e
# Find missing dependencies by parsing 'ldd'

[ "$1" ] || { printf '\033[1;33m-> \033[m%s\n' "usage: ${0##*/} <pkg>" ; exit 0 ;}

kiss l "$1" >/dev/null

db_dir=$KISS_ROOT/var/db/kiss/installed
grep=$(command -v ggrep) || grep='grep'

printf '=> Detected dependencies:\n'

while read -r file; do
    [ -d "$KISS_ROOT/$file" ] && continue

    ldd "$KISS_ROOT/$file" 2>/dev/null | while read -r dep; do
        # Skip lines containing 'ldd'.
        [ "${dep##*ldd*}" ] || continue

        # Extract the file path from 'ldd' output.
        dep=${dep#* => }
        dep=${dep% *}

        # Traverse symlinks to get the true path to the file.
        pkg=$(readlink -f "$KISS_ROOT/${dep##$KISS_ROOT}")

        # Figure out which package owns the file.
        pkg=$("$grep" -lFx "${pkg##$KISS_ROOT}" "$db_dir/"*/manifest)
        pkg=${pkg%/*}
        pkg=${pkg##*/}

        # Skip listing these packages as dependencies.
        case $pkg in
            musl|gcc|$1) ;;
            *) printf '%s\n' "$pkg" ;;
        esac
    done 
done < "$db_dir/$1/manifest" | sort -u

printf '\n=> Package dependencies:\n'

[ -f "$db_dir/$1/depends" ] &&
    cat "$db_dir/$1/depends"