#!/bin/bash
# ============================================================================
# DarkForge Linux — Phase 3, Chapter 8: Strip Binaries and Clean Up
# ============================================================================
# Purpose:  Remove debugging symbols from all installed binaries to reduce
#           system size. This is the final cleanup step before boot testing.
#           LFS §8.85-87 combined.
# Inputs:   All installed binaries and libraries in /usr/
# Outputs:  Stripped binaries, cleaned system
# Assumes:  Running inside chroot, all Phase 3 packages built
# Ref:      LFS 13.0 §8.85, §8.86, §8.87
# ============================================================================

set -euo pipefail

source /sources/toolchain-scripts/100-chroot-env.sh

echo "=== Stripping symbols from binaries and libraries ==="

# Strip unneeded symbols from all installed binaries and libraries
# This is safe to do (doesn't affect functionality) and saves disk space
strip --strip-all /usr/lib/* 2>/dev/null || true
strip --strip-all /usr/bin/* 2>/dev/null || true
strip --strip-all /usr/sbin/* 2>/dev/null || true

# Also strip libraries in standard lib directory
strip --strip-all /lib/* 2>/dev/null || true
strip --strip-all /sbin/* 2>/dev/null || true

echo ">>> Binaries stripped"

# Remove unnecessary files
echo ">>> Cleaning up unnecessary files..."

# Remove duplicate man pages if any
find /usr/share/man -type f -name "*.gz" | while read f; do
    if [ -f "${f%.gz}" ]; then
        rm -f "$f"
    fi
done

# Remove empty directories
find /usr -type d -empty -delete 2>/dev/null || true
find /var -type d -empty -delete 2>/dev/null || true

echo ">>> Cleanup complete"

# Report final system size
echo ""
echo "=== System size report ==="
du -sh /usr 2>/dev/null || true
du -sh /lib 2>/dev/null || true
du -sh /bin 2>/dev/null || true
du -sh /sbin 2>/dev/null || true
du -sh /var 2>/dev/null || true
echo ""
echo "=== Stripping and cleanup complete ==="
echo ""
echo "System is ready for boot testing. Next steps:"
echo "  1. Exit chroot (exit or Ctrl+D)"
echo "  2. Build kernel (Phase 4)"
echo "  3. Configure init system (Phase 5)"
echo "  4. Test in QEMU"