#!/bin/bash

## Dependencies (arch/debian package names, may differ elsewhere):
## bash, coreutils (dirname, mkdir, rm, cp), git, zip, findutils (find), curl, wget, jq
check_dep() {
	if ! [ -x "$(command -v $1)" ]; then
		echo "You need to install ${2:-$1}"
		exit 1
	fi
}

check_dep dirname coreutils
check_dep git
check_dep zip
check_dep find findutils
check_dep curl
check_dep wget
check_dep jq

# Navigate to main modpack project directory
cd "$(dirname "$0")"
basedir="$PWD"

# Location for downloading/updating the mc_rebalance mod
if [ ! -d deps ]; then
	mkdir deps
fi

# Location for saving the mc_rebalance mod
if [ ! -d overrides/mods ]; then
	mkdir -p overrides/mods
fi

# Location for saving all other mods
rm -rf deps/mods
mkdir -p deps/mods

# Clone the mod repo, if it already exists then update it
echo "# Cloning/updating MC Rebalance mod"
git clone --single-branch --branch 1.21 "https://patience.nearmisses.xyz/patience/mc_rebalance.git" "${basedir}/deps/mc_rebalance" 2> /dev/null || \
	(cd "${basedir}/deps/mc_rebalance"; git pull > /dev/null)

# Compile the mod
echo "# Compiling MC Rebalance mod"
rm -f "${basedir}/deps/mc_rebalance/build/libs/mc_rebalance-"*".jar"
(cd "${basedir}/deps/mc_rebalance/" && ./gradlew build > /dev/null)

# Clean up old mod files
rm -f "${basedir}/overrides/mods/mc_rebalance-"*".jar"
cp "$(find "${basedir}/deps/mc_rebalance/build/libs" -regex "${basedir}/deps\/mc_rebalance\/build\/libs\/mc_rebalance-[0-9\.]+\.jar")" "${basedir}/overrides/mods"

# Generate language files
(cd "$basedir/overrides/resources/common/required/mc_rebalance_datapack/assets/minecraft/lang/" && ./gen-langs.sh)

# Final path for the modpack
if [ ! -d release ]; then
	mkdir release
fi

# Get version from the mrpack file
version="$(jq -r ".versionId" modrinth.index.json)"
version="${version:-dev}"

# Download fabric server
if [ ! -e "${basedir}/deps/fabric-server.jar" ]; then
	echo "# Downloading fabric server"
	(cd deps && curl --silent --output fabric-server.jar https://meta.fabricmc.net/v2/versions/loader/1.21.1/0.19.2/1.1.1/server/jar)
fi

# Download all mods
echo "# Downloading mods from modrinth.index.json for modpack"
(cd deps/mods && wget --quiet --input-file <(jq -r '.files[] | select(.env.server=="required") | .downloads[]' ../../modrinth.index.json))

# Export client release to file
echo "# Zipping client modpack"
zip --filesync --recurse-paths --quiet "${basedir}/release/MC_Rebalance_${version}.mrpack" overrides modrinth.index.json -x "*.git*" -x "*.sh"

# Export server release to file
echo "# Zipping server modpack"
if [ -e "${basedir}/release/MC_Rebalance_${version}_server.zip" ]; then
	rm -rf "${basedir}/release/MC_Rebalance_${version}_server.zip"
fi
(cd deps && zip --recurse-paths --quiet "${basedir}/release/MC_Rebalance_${version}_server.zip" mods fabric-server.jar)
(cd server-files && zip --recurse-paths --quiet "${basedir}/release/MC_Rebalance_${version}_server.zip" .)
(cd overrides && zip --recurse-paths --quiet "${basedir}/release/MC_Rebalance_${version}_server.zip" . -x "*.git*" -x "*.sh")

echo
if [ $? -eq 0 ]; then
	echo "Successfully exported the server modpack to ${basedir}/release/MC_Rebalance_${version}_server.zip"
	echo "Successfully exported the client modpack to ${basedir}/release/MC_Rebalance_${version}.mrpack"
else
	echo "An unknown error occured while zipping the pack"
fi