#!/bin/bash
# Measures core demo size by building with STRIP_EXTERNAL_LIBS
# Binary compiles but does NOT run (all I/O stubbed)

set -e

echo "=== Demo Size Measurement ==="
echo ""

# Clean previous build
rm -rf build_size

# Build with STRIP_EXTERNAL_LIBS
echo "Building with STRIP_EXTERNAL_LIBS..."
cmake -S . -B build_size -DDEMO_STRIP_EXTERNAL_LIBS=ON
cmake --build build_size -j4

# Strip debug symbols
strip build_size/demo64k

# Measure sizes
echo ""
echo "=== Size Results ==="
echo ""

DEMO_SIZE=$(stat -f%z build_size/demo64k 2>/dev/null || stat -c%s build_size/demo64k)
DEMO_SIZE_KB=$((DEMO_SIZE / 1024))

echo "Demo code only: ${DEMO_SIZE_KB} KB (${DEMO_SIZE} bytes)"

# Compare with normal build if it exists
if [ -f build/demo64k ]; then
    NORMAL_SIZE=$(stat -f%z build/demo64k 2>/dev/null || stat -c%s build/demo64k)
    NORMAL_SIZE_KB=$((NORMAL_SIZE / 1024))
    EXTERNAL_SIZE=$((NORMAL_SIZE - DEMO_SIZE))
    EXTERNAL_SIZE_KB=$((EXTERNAL_SIZE / 1024))

    echo ""
    echo "Normal build:    ${NORMAL_SIZE_KB} KB (${NORMAL_SIZE} bytes)"
    echo "External libs:   ${EXTERNAL_SIZE_KB} KB (${EXTERNAL_SIZE} bytes)"
    echo ""
    echo "Demo is $(echo "scale=1; $DEMO_SIZE * 100 / $NORMAL_SIZE" | bc)% of total size"
fi

echo ""
echo "Note: Size measurement binary does NOT run (all I/O stubbed)"