Minecract PaperMC latest version download

paper-dl.sh

#!/bin/bash
# ==============================================================================
# Downloads the latest PaperMC JAR file for the latest Minecraft version
# ==============================================================================
# This script requires the following packages to be installed:
# - curl
# - jq
# ==============================================================================

# Configuration ================================================================

# Specify the output directory
DEST_DIR="./"

# Specify the name of the JAR file
JAR_FILE_NAME="papermc.jar"

# Code ========================================================================

# Get the latest Minecraft version from the JSON
MINECRAFT_VERSION=$(curl -s "https://papermc.io/api/v2/projects/paper" | jq -r '.versions[-1]')
echo "Minecraft version: $MINECRAFT_VERSION"

# Get the latest PaperMC build version for the latest Minecraft version
BUILD_VERSION=$(curl -s "https://papermc.io/api/v2/projects/paper/versions/$MINECRAFT_VERSION" | jq -r '.builds[-1]')
echo "PaperMC build version: $BUILD_VERSION"

# Get the application name from the PaperMC build JSON
APPLICATION_NAME=$(curl -s "https://papermc.io/api/v2/projects/paper/versions/$MINECRAFT_VERSION/builds/$BUILD_VERSION" | jq -r '.downloads.application.name')
echo "Application name: $APPLICATION_NAME"

# Define the download URL for the PaperMC JAR file
JAR_URL="https://papermc.io/api/v2/projects/paper/versions/$MINECRAFT_VERSION/builds/$BUILD_VERSION/downloads/$APPLICATION_NAME"
echo "Download URL: $JAR_URL"

# Make sure the output directory exists
mkdir -p "$DEST_DIR"

# Remove any old JAR files
rm -f "$DEST_DIR/$APPLICATION_NAME"

# Download the PaperMC JAR file
curl -o "$DEST_DIR/$APPLICATION_NAME" "$JAR_URL"

# Make sure the download succeeded
if [ $? -ne 0 ]; then
	echo "Failed to download $JAR_URL"
	exit 1
fi

# Sanity check if file size is less than 1 mb
if [ $(stat -c%s "$DEST_DIR/$APPLICATION_NAME") -lt 1000000 ]; then
	echo "Downloaded file is too small, something went wrong"
	exit 1
fi

# Remove the previous version
rm -f "$DEST_DIR/$JAR_FILE_NAME"

# Rename the JAR file
mv "$DEST_DIR/$APPLICATION_NAME" "$DEST_DIR/$JAR_FILE_NAME"

# Print a message to confirm the download
echo "Downloaded PaperMC version $MINECRAFT_VERSION (build $BUILD_VERSION) to $DEST_DIR/$JAR_FILE_NAME"

# Exit with a success code
exit 0