#!/bin/bash
cd /mnt/server

apt-get update
apt-get install -y curl jq openjdk-17-jdk

# Clean old install
rm -f server.jar

MC_VERSION="$(echo "$MC_VERSION" | tr -d ' ')"
CANVAS_BUILD="$(echo "$CANVAS_BUILD" | tr -d ' ')"

# Get version
if [[ "$MC_VERSION" == "latest" ]]; then
    echo "[CanvasMC] Fetching latest Minecraft version..."
    MC_VERSION=$(curl -sSL "https://canvasmc.io/api/v2/builds" | jq -r '.[].minecraftVersion' | sort -Vr | head -n1)
fi

if [[ -z "$MC_VERSION" ]]; then
    echo "[CanvasMC] Failed to resolve a valid Minecraft version."
    exit 1
fi

echo "[CanvasMC] Using Minecraft version: $MC_VERSION"

# Get build
if [[ "$CANVAS_BUILD" == "latest" ]]; then
    echo "[CanvasMC] Fetching latest build for Minecraft $MC_VERSION..."
    BUILD_NUMBER=$(curl -sSL "https://canvasmc.io/api/v2/builds?minecraft_version=$MC_VERSION" | jq -r '.[].buildNumber' | sort -n | tail -n1)
else
    BUILD_NUMBER="$CANVAS_BUILD"
fi

if [[ -z "$BUILD_NUMBER" ]]; then
    echo "[CanvasMC] Could not determine build number."
    exit 1
fi

echo "[CanvasMC] Using build number: $BUILD_NUMBER"

# Build URL
JAR_URL="https://jenkins.canvasmc.io/job/Canvas/${BUILD_NUMBER}/artifact/canvas-server/build/libs/canvas-build.${BUILD_NUMBER}.jar"

echo "[CanvasMC] Downloading server.jar from:"
echo "$JAR_URL"
curl -sSL -o server.jar "$JAR_URL"

if [[ ! -f server.jar ]]; then
    echo "[CanvasMC] Download failed or file not found."
    exit 1
fi

echo "Installation complete."