#!/usr/bin/env sh

PHOTOS_DIR="photos"
OUTPUT_FILE="photos.json"

# Check photos directory exists
if [ ! -d "$PHOTOS_DIR" ]; then
  echo "Error: '$PHOTOS_DIR' directory not found."
  exit 1
fi

# Start JSON array
printf "[\n" > "$OUTPUT_FILE"

# Collect JPG files (case-insensitive), sorted
# Works on macOS + Linux
FILES=$(ls -1 "$PHOTOS_DIR" 2>/dev/null | grep -i '\.jpg$' | sort)

COUNT=0
TOTAL=$(printf "%s\n" "$FILES" | grep -c .)

printf "%s\n" "$FILES" | while IFS= read -r FILE; do
  COUNT=$((COUNT + 1))

  if [ "$COUNT" -lt "$TOTAL" ]; then
    printf "  \"%s\",\n" "$FILE" >> "$OUTPUT_FILE"
  else
    printf "  \"%s\"\n" "$FILE" >> "$OUTPUT_FILE"
  fi
done

# End JSON array
printf "]\n" >> "$OUTPUT_FILE"

echo "Generated $OUTPUT_FILE with $TOTAL image(s)."