#!/bin/bash

# One cached frame shared by all lock outputs, including when OWE is paused.
set -euo pipefail

source_path=$1
cache_dir="${XDG_CACHE_HOME:-$HOME/.cache}/omarchy/lock-poster"
signature=$(stat -Lc '%s:%y:%z' "$source_path")
key=$(printf '%s\n%s' "$source_path" "$signature" | sha256sum | cut -d ' ' -f 1)
poster="$cache_dir/poster-$key.jpg"
mkdir -p "$cache_dir"
exec {lock_fd}>"$cache_dir/.lock"
flock -w 10 "$lock_fd"

if [[ ! -s $poster ]]; then
  temporary=$(mktemp "$cache_dir/.poster-XXXXXX.jpg")
  trap 'rm -f "$temporary"' EXIT
  timeout -k 1 5 ffmpegthumbnailer -i "$source_path" -o "$temporary" -s 1920 -q 8 {lock_fd}>&-
  [[ -s $temporary ]]
  mv -f "$temporary" "$poster"
  find "$cache_dir" -maxdepth 1 -type f -name 'poster-*.jpg' ! -name "poster-$key.jpg" -delete
fi

printf '%s\n' "$poster"