109 lines
2.9 KiB
Bash
Executable File
109 lines
2.9 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# /home/krosh/Documents/Github/nixos-config/home-manager/modules/zsh/next_wallpaper.sh
|
|
# Pick next or random wallpaper from ~/Pictures/Wallpapers and update symlink ~/Pictures/wallpaper.png
|
|
# Then call: swww img "$WALLPAPER"
|
|
|
|
set -euo pipefail
|
|
|
|
RANDOM_MODE=0
|
|
while getopts "r" opt; do
|
|
case "$opt" in
|
|
r) RANDOM_MODE=1 ;;
|
|
*) echo "Usage: $0 [-r]" >&2; exit 2 ;;
|
|
esac
|
|
done
|
|
|
|
WALLPAPERS_DIR="$HOME/Pictures/Wallpapers"
|
|
SYMLINK="$HOME/Pictures/wallpaper.png"
|
|
|
|
if [ ! -d "$WALLPAPERS_DIR" ]; then
|
|
echo "Wallpapers directory not found: $WALLPAPERS_DIR" >&2
|
|
exit 1
|
|
fi
|
|
|
|
# Resolve current wallpaper (target of symlink). If not a symlink or missing, CUR will be empty.
|
|
CUR="$(readlink -f "$SYMLINK" 2>/dev/null || true)"
|
|
|
|
# Collect png files; sort by timestamp ascending (oldest first) using ls -tr.
|
|
# If there are spaces in names, ls handles them, but filenames with newlines are unsupported.
|
|
mapfile -t FILES < <(find "$WALLPAPERS_DIR" -maxdepth 1 -type f -iname '*.png' -print0 | xargs -0 ls -1tr 2>/dev/null || true)
|
|
|
|
if [ "${#FILES[@]}" -eq 0 ]; then
|
|
echo "No png wallpapers found in $WALLPAPERS_DIR" >&2
|
|
exit 1
|
|
fi
|
|
|
|
choose_random() {
|
|
# pick random file different from CUR if possible
|
|
candidates=()
|
|
for f in "${FILES[@]}"; do
|
|
[ "$(readlink -f "$f")" = "$CUR" ] && continue
|
|
candidates+=("$f")
|
|
done
|
|
if [ "${#candidates[@]}" -eq 0 ]; then
|
|
# only current exists
|
|
echo "No other wallpaper to choose (only current exists)." >&2
|
|
exit 1
|
|
fi
|
|
idx=$((RANDOM % ${#candidates[@]}))
|
|
echo "${candidates[$idx]}"
|
|
}
|
|
|
|
choose_next() {
|
|
# find current in sorted list and pick next (wrap). If current not found, choose first.
|
|
n=${#FILES[@]}
|
|
if [ "$n" -eq 1 ]; then
|
|
# only one file
|
|
if [ "$(readlink -f "${FILES[0]}")" = "$CUR" ]; then
|
|
echo "No other wallpaper to choose (only current exists)." >&2
|
|
exit 1
|
|
else
|
|
echo "${FILES[0]}"
|
|
return
|
|
fi
|
|
fi
|
|
|
|
# find index of current
|
|
idx=-1
|
|
for i in "${!FILES[@]}"; do
|
|
if [ "$(readlink -f "${FILES[i]}")" = "$CUR" ]; then
|
|
idx="$i"
|
|
break
|
|
fi
|
|
done
|
|
|
|
if [ "$idx" -eq -1 ]; then
|
|
# current not in list: choose first
|
|
echo "${FILES[0]}"
|
|
return
|
|
fi
|
|
|
|
# next index with wrap
|
|
next=$(( (idx + 1) % n ))
|
|
# if next equals current (possible if only one), error handled above
|
|
echo "${FILES[$next]}"
|
|
}
|
|
|
|
if [ "$RANDOM_MODE" -eq 1 ]; then
|
|
NEW="$(choose_random)"
|
|
else
|
|
NEW="$(choose_next)"
|
|
fi
|
|
|
|
# Ensure absolute path
|
|
NEW="$(readlink -f "$NEW")"
|
|
|
|
# Create symlink (atomic-ish): create temporary symlink and move
|
|
TMP_SYMLINK="$(mktemp -u "${SYMLINK}.tmp.XXXX")"
|
|
ln -sfn -- "$NEW" "$TMP_SYMLINK"
|
|
mv -f "$TMP_SYMLINK" "$SYMLINK"
|
|
|
|
# Export for hyprctl command (and run it)
|
|
WALLPAPER="$NEW"
|
|
|
|
swww img "$WALLPAPER" --transition-type fade
|
|
hyprpanel -q ; hyprpanel & disown
|
|
wal -c
|
|
wal -n -i "$WALLPAPER"
|
|
|
|
exit 0 |