#!/bin/bash

INPUT_DIR="$1"
OUTPUT_FILE="$2"

if [ -z "$INPUT_DIR" ] || [ -z "$OUTPUT_FILE" ]; then
  echo "Usage: ./generate.sh <input-folder> <output-xml>"
  exit 1
fi

if [ ! -d "$INPUT_DIR" ]; then
  echo "Invalid folder: $INPUT_DIR"
  exit 1
fi

# Absoluten Pfad holen
INPUT_DIR=$(cd "$INPUT_DIR" && pwd)

# XML Header
# echo '<?xml version="1.0" encoding="UTF-8"?>' > "$OUTPUT_FILE"
echo '<ListBucketResult>' >> "$OUTPUT_FILE"

# Dateien durchlaufen
find "$INPUT_DIR" -type f ! -name "*.txt" ! -name "*.xml" ! -name "*.DS_Store" | while read -r file; do
  # Key (relativer Pfad wie in S3)
  key="${file#$INPUT_DIR/}"

  # Dateigröße (macOS: stat -f%z)
  size=$(stat -f%z "$file")

  # LastModified im ISO-Format
  last_modified=$(date -u -r "$file" +"%Y-%m-%dT%H:%M:%S.000Z")

  # XML escapen (minimal)
  esc_key=$(printf '%s\n' "$key" | sed \
    -e 's/&/\&amp;/g' \
    -e 's/</\&lt;/g' \
    -e 's/>/\&gt;/g' \
    -e 's/"/\&quot;/g' \
    -e "s/'/\&apos;/g")

  cat >> "$OUTPUT_FILE" <<EOF
  <Contents>
    <Key>$esc_key</Key>
    <Size>$size</Size>
    <LastModified>$last_modified</LastModified>
    <StorageClass>STANDARD</StorageClass>
  </Contents>
EOF

done

echo '</ListBucketResult>' >> "$OUTPUT_FILE"

echo "XML file created: $OUTPUT_FILE"