#!/bin/bash
#
# UE5 Build Monitor Script
# Monitors the progress of Unreal Engine build
#

BUILD_DIR="$HOME/UnrealEngine"
BUILD_LOG="$BUILD_DIR/build.log"
BINARY_PATH="$BUILD_DIR/Engine/Binaries/Linux/UnrealEditor"

echo "=== UE5.4.1 Build Monitor ==="
echo ""

# Check if build is running
if pgrep -f "make -j4 UnrealEditor" > /dev/null; then
    echo "✓ Build is RUNNING"
    echo "  PID: $(pgrep -f 'make -j4 UnrealEditor' | head -1)"
else
    echo "⚠ Build is NOT running"
    echo "  (May have completed or not started)"
fi

echo ""

# Check build log
if [ -f "$BUILD_LOG" ]; then
    LOG_SIZE=$(du -h "$BUILD_LOG" | cut -f1)
    echo "Build Log: $BUILD_LOG"
    echo "Log Size: $LOG_SIZE"
    echo ""
    echo "Last 10 lines of build log:"
    echo "----------------------------------------"
    tail -10 "$BUILD_LOG"
    echo "----------------------------------------"
else
    echo "Build log not found: $BUILD_LOG"
fi

echo ""

# Check if binary exists
if [ -f "$BINARY_PATH" ]; then
    BINARY_SIZE=$(du -h "$BINARY_PATH" | cut -f1)
    BINARY_DATE=$(stat -c %y "$BINARY_PATH" | cut -d'.' -f1)
    echo "✓ UnrealEditor binary EXISTS"
    echo "  Size: $BINARY_SIZE"
    echo "  Last modified: $BINARY_DATE"
    echo ""
    echo "Build appears to be COMPLETE!"
    echo "Verify with: $BINARY_PATH -version"
else
    echo "⏳ UnrealEditor binary not found yet"
    echo "  Expected location: $BINARY_PATH"
    echo "  Build still in progress..."
fi

echo ""

# Check disk usage
if [ -d "$BUILD_DIR" ]; then
    DISK_USAGE=$(du -sh "$BUILD_DIR" 2>/dev/null | cut -f1)
    echo "Installation size: $DISK_USAGE"
fi

echo ""

# Check CPU/Memory usage
if pgrep -f "make -j4 UnrealEditor" > /dev/null; then
    echo "Build process resource usage:"
    ps aux | grep "make -j4" | grep -v grep | awk '{printf "  CPU: %s%%, Memory: %s%%\n", $3, $4}'
fi

echo ""
echo "=== Monitoring Commands ==="
echo ""
echo "Watch build log:"
echo "  tail -f $BUILD_LOG"
echo ""
echo "Check if running:"
echo "  ps aux | grep 'make -j4'"
echo ""
echo "Check binary:"
echo "  ls -lh $BINARY_PATH"
echo ""