#!/bin/bash
set -e

echo "==== Server Initialization ===="

# --- Start background service ---
echo ">> Configuring network connectivity..."

if [ -z "$PLAYIT_SECRET" ]; then
    echo "⚠️  Network configuration not set"
    echo "   Add configuration in Space Settings -> Secrets"
else
    echo "✅ Network config detected"
    PLAYIT_CMD=$(which playit || echo "/usr/bin/playit")

    if [ -f "$PLAYIT_CMD" ]; then
        echo "✅ Starting network service"
        $PLAYIT_CMD --secret "$PLAYIT_SECRET" > /dev/null 2>&1 &
        PLAYIT_PID=$!
        sleep 5

        if ps -p $PLAYIT_PID >/dev/null 2>&1; then
            echo "✅ Network service active"
        else
            echo "⚠️  Service not running"
        fi
    else
        echo "⚠️  Network tools unavailable"
    fi
fi

# --- Server Configuration ---
echo ">> Setting up server environment..."

if [ -f "server.properties" ]; then
    sed -i "s/^server-port=.*/server-port=7860/" server.properties
    sed -i "s/^query.port=.*/query.port=7860/" server.properties
    echo "✅ Port configured: 7860"
else
    echo "⚠️  Using default configuration"
fi

# --- Data Setup ---
echo ">> Loading world data..."
if command -v python3 >/dev/null 2>&1 && [ -f "download_world.py" ]; then
    python3 download_world.py || echo "⚠️  Using default world"
else
    echo "ℹ️  No custom data found"
fi

chmod -R 777 /app/world* 2>/dev/null || true
chmod -R 777 /app/plugins 2>/dev/null || true

echo "Available data folders:"
ls -la /app/ | grep world || echo "No custom data - generating new"

# --- Start Main Service ---
echo ">> Starting main service on port 7860..."
echo ">> Java: $(java -version 2>&1 | head -n 1)"
echo ">> Memory: 8GB allocated"

exec java -server -Xmx8G -Xms8G \
    -XX:+UseG1GC \
    -XX:+ParallelRefProcEnabled \
    -XX:MaxGCPauseMillis=50 \
    -XX:+UnlockExperimentalVMOptions \
    -XX:+DisableExplicitGC \
    -XX:+AlwaysPreTouch \
    -XX:G1NewSizePercent=20 \
    -XX:G1MaxNewSizePercent=40 \
    -XX:G1HeapRegionSize=8M \
    -XX:G1ReservePercent=10 \
    -XX:G1HeapWastePercent=5 \
    -XX:G1MixedGCCountTarget=4 \
    -XX:InitiatingHeapOccupancyPercent=15 \
    -XX:G1MixedGCLiveThresholdPercent=85 \
    -XX:G1RSetUpdatingPauseTimePercent=5 \
    -XX:SurvivorRatio=32 \
    -XX:+PerfDisableSharedMem \
    -XX:MaxTenuringThreshold=1 \
    -jar purpur.jar --nogui