Merge GeyserOptionalPack With Existing Resource Pack

merge.sh

: ${1?'Please specify an input resource pack in the same directory as the script (e.g. ./merge.sh MyResourcePack.zip)'}

# ensure jq is installed
if command jq --version 2>/dev/null | grep -q "1.6"; then
    printf "\e[32m[+]\e[m \e[37mDependency jq satisfied\e[m\n"
    echo
else
    echo "Dependency jq-1.6 is not satisfied"
    echo "You must install jq-1.6 before proceeding"
    echo "See https://stedolan.github.io/jq/download/"
    echo "Exiting script..."
    exit 1
fi

# ensure input pack exists
if ! test -f "${1}"; then
   echo "Input resource pack ${1} is not in this directory"
   echo "Please ensure you have entered the filename correctly"
   exit 1
else
  printf "\e[33m[•]\e[m \e[37mInput file ${1} detected\e[m\n"
  echo
fi

# download optional pack
printf "\e[3m\e[37m"
wget -nv --show-progress -O GeyserOptionalPack.mcpack https://ci.opencollab.dev/job/GeyserMC/job/GeyserOptionalPack/job/master/lastSuccessfulBuild/artifact/GeyserOptionalPack.mcpack
printf "\e[m"
echo
printf "\e[32m[+]\e[m \e[37mOptional pack downloaded\e[m\n"

# decompress optional pack and place in correct directory
mkdir opt
printf "\e[33m[•]\e[m \e[37mDecompressing optional pack\e[m\n"
unzip -q -d opt GeyserOptionalPack.mcpack
printf "\e[32m[+]\e[m \e[37mOptional pack decompressed\e[m\n"
echo
rm opt/manifest.json
rm opt/pack_icon.png


# decompress input pack and place in correct directory
mkdir inp
printf "\e[33m[•]\e[m \e[37mDecompressing input pack\e[m\n"
echo
unzip -q -d inp ${1}
printf "\e[32m[+]\e[m \e[37mInput pack decompressed\e[m\n"
echo

# get data about entities in input and optional packs
printf "\e[33m[•]\e[m \e[37mListing entities of optional pack\e[m\n"
jq -n '[inputs | {(."minecraft:client_entity".description.identifier): (input_filename)}] | add' $(find opt/entity -type f -name "*.json") > opt_entities.json
printf "\e[33m[•]\e[m \e[37mListing entities of input pack\e[m\n"
jq -n '[inputs | {(."minecraft:client_entity".description.identifier): (input_filename)}] | add' $(find inp/entity -type f -name "*.json") > inp_entities.json

# get identifiers of duplicate entities
printf "\e[33m[•]\e[m \e[37mListing duplicate entities\e[m\n"
duplicates=( $(jq -rs '(.[1] | keys) - ((.[1] | keys) - (.[0] | keys)) | .[]' opt_entities.json inp_entities.json) )
echo

printf "\e[33m[•]\e[m \e[37mBeginning duplicate entity merging\e[m\n"
echo

# iterate over duplicate entities
for i in ${duplicates[@]}
do

  printf "\e[33m[•]\e[m \e[37mMerging entity ${i}\e[m\n"

  # get input and optional pack duplicate entities
  inp_file=$(jq -r --arg input ${i} '.[$input]' inp_entities.json)
  opt_file=$(jq -r --arg input ${i} '.[$input]' opt_entities.json)

  # merge duplicate entities
  jq -s '
  
  def meld(a; b):
  a as $a | b as $b
  | if ($a|type) == "object" and ($b|type) == "object"
    then reduce ([$a,$b]|add|keys_unsorted[]) as $k ({}; 
      .[$k] = meld( $a[$k]; $b[$k]) )
    elif ($a|type) == "array" and ($b|type) == "array"
    then $a+$b | unique
    elif $b == null then $a
    else $b
  end;
  
  meld(.[0]; .[1])
  
  ' ${inp_file} ${opt_file} > temp && mv temp ${inp_file} && rm ${opt_file}

  printf "\e[32m[+]\e[m \e[37mMerge complete for ${i}\e[m\n"
  echo

done

printf "\e[32m[+]\e[m \e[37mMerged all duplicate entities\e[m\n"
echo

printf "\e[33m[•]\e[m \e[37mBeginning file merging\e[m\n"
echo

# merge packs without overwrite
cd opt && opt_files=( $(find * -type f) ) && cd ..

for file in ${opt_files[@]}
do 
  if [[ -f inp/${file} ]]
  then 
    mkdir -p inp/${file%/*} 2>/dev/null && cp opt/${file} inp/${file%.*}_opt.${file##*.}
    printf "\e[32m[+]\e[m \e[37mCopied /opt/${file} to /inp/${file%.*}_opt.${file##*.}\e[m\n"
    echo ${file%.*}_opt.${file##*.} >> duplicate_files.log
  else 
    mkdir -p inp/${file%/*} 2>/dev/null && cp opt/$file inp/${file}
    printf "\e[32m[+]\e[m \e[37mCopied /opt/${file} to /inp/${file}\e[m\n"
  fi
done
echo

printf "\e[32m[+]\e[m \e[37mCopied all files to input pack\e[m\n"
echo

# cleanup
printf "\e[31m[X]\e[m \e[37mDeleting scratch files\e[m\n"
rm -rf opt && rm GeyserOptionalPack.mcpack && rm inp_entities.json && rm opt_entities.json

# compress input pack
printf "\e[33m[•]\e[m \e[37mCompressing output packs\e[m\n"
mkdir target
cd inp > /dev/null && zip -rq8 ${1} . -x "*/.*" && cd - > /dev/null && mv inp/${1} target/${1%.*}_opt.${1##*.}
rm -rf inp

echo
printf "\e[32m[+]\e[m \e[1m\e[37mMerge Process Complete\e[m\n"
echo
printf "\e[37mExiting...\e[m\n"
echo

why is this an SH script when bedrock isnt for linux

@newbies155 because I use Linux and MacOS. If you'd like to develop a solution for your own platform, feel free.