fix-catppuccin.sh

#!/usr/bin/env bash
set -e

DIR="$HOME/Pictures/wallpapers/catppuccin-mocha"
BATCH_SIZE=5

command -v gowall >/dev/null || { echo "gowall not found in PATH" >&2; exit 1; }
[[ -d "$DIR" ]] || { echo "no such dir: $DIR" >&2; exit 1; }

WORK="$(mktemp -d)"
trap 'rm -rf "$WORK"' EXIT
IN="$WORK/in"
OUT="$WORK/out"
mkdir -p "$IN" "$OUT"

IMAGES=()
while IFS= read -r -d '' img; do
    IMAGES+=("$img")
done < <(find "$DIR" -maxdepth 1 -name '*.webp' -print0 | sort -z)
total=${#IMAGES[@]}

echo "=== Converting ALL catppuccin-mocha images with gowall ==="
echo "Processing in batches of $BATCH_SIZE to avoid high RAM usage"
echo "Total: $total images"
echo ""

count=0

process_batch() {
    local n=$1
    count=$((count + n))
    echo "[$count/$total] Processing batch of $n images..."
    gowall convert --dir "$IN" --theme catppuccin --output "$OUT" --format webp --yes
    local out base src
    for out in "$OUT"/*.webp; do
        [ -f "$out" ] || continue
        base=$(basename "$out")
        src="$DIR/$base"
        if cmp -s "$out" "$src"; then
            echo "  Unchanged: $base"
        else
            cp "$out" "$src"
            echo "  Done: $base"
        fi
    done
    rm -f "$IN"/* "$OUT"/*
}

i=0
for img in "${IMAGES[@]}"; do
    cp "$img" "$IN/"
    i=$((i + 1))

    if [ "$i" -ge "$BATCH_SIZE" ]; then
        process_batch "$i"
        i=0
    fi
done

if [ "$i" -gt 0 ]; then
    process_batch "$i"
fi

echo ""
echo "All done! $count images processed."