#!/usr/bin/env bash
# lint-sprig
#
# Do some sanity checks on the sprig games.

metadata=games/metadata.json

if [[ "$1" == "-h" ]] || [[ "$1" == "--help" ]]; then
  echo "Usage: $0 [games/<name>.js ...]" >&2;
  cat <<EOF >&2

Perform sanity check on sprig games. Ensures js files in games directory are
represented in metadata file. Checks name for invalid characters. Suggests a
record to add to metadata if not present, pulling title and author from
javascript file. Checks for associated image file.

Does not read metadata to determine if it references files not present.
EOF
  exit 2;
fi

if [[ $# -eq 0 ]]; then
  files=$(echo games/*.js);
else
  files="$@";
fi


err=0
for game in $files; do
  name=$(basename "$game" .js);
  if [[ ! "$name" =~ ^[a-zA-Z0-9_\-]+$ ]]; then
    echo "warning: Unexpected character in file name '$game'." >&2;
    err=1;
  fi

  if ! grep -c "$name" $metadata > /dev/null; then
    echo "warning: '$name' for $game not present in $metadata." >&2;
    if ! grep '@title' $game >&-; then
      echo "error: no @title in $game";
      title="$name";
    else
      title=$(grep '@title' $game | awk '{ print $2 }');
    fi
    if ! grep '@author' $game >&-; then
      echo "error: no @author in $game";
      author="N/A";
    else
      author=$(grep '@author' $game | awk '{ print $2 }');
    fi
    img="games/img/$name.png";
    if [[ ! -f "$img" ]]; then
      echo "warning: no '$img' image found for $game." >&2;
      img="";
      err=1;
    fi
    date=$(date +%Y-%m-%d);
    echo "Suggested fix: add this record to $metadata." >&2;
cat <<EOF >&2
  {
    "filename": "$name.js",
    "title": "$title",
    "author": "$author",
    "img": "$img",
    "tags": [],
    "addedOn": "$date"
  },
EOF
    err=1
  fi

  # img="games/img/$name.png"
  # if [[ ! -f "$img" ]]; then
  #   echo "warning: expect image '$img' for $game." >&2;
  #   err=1
  # fi
done

exit $err