#!/usr/bin/env bash

: "${CM_DIR="${XDG_RUNTIME_DIR-"${TMPDIR-/tmp}"}"}"

major_version=6

shopt -s nullglob

cache_dir=$CM_DIR/clipmenu.$major_version.$USER
cache_file=$cache_dir/line_cache

declare -A cksums

while IFS= read -r line; do
    cksum=$(cksum <<< "$line")
    cksums["$cksum"]="$line"

    # Are all cache entries represented by a file?
    full_file=$cache_dir/$cksum
    if ! [[ -f $full_file ]]; then
        printf 'cache entry without file: %s -> %s\n' "$line" "$full_file" >&2
    fi
done < <(cut -d' ' -f2- < "$cache_file")

# Are all files represented by a cache entry?
for file in "$cache_dir"/[012346789]*; do
    cksum=${file##*/}
    line=${cksums["$cksum"]-_missing_}
    if [[ $line == _missing_ ]]; then
        printf 'file without cache entry: %s\n' "$file"
    fi
done