tab = '\t'
dollar = '$'

content = f"""# ========================================================== #
# Spider Runtime - ESP32 Build System                        #
# Toolchain: Espressif ESP-IDF (xtensa-esp-elf-g++)          #
# ========================================================== #

CC          := xtensa-esp-elf-g++
TARGET      := spider_esp32.elf
SRCDIR      := ../../src
BUILDDIR    := bin
TARGETDIR   := out
SRCEXT      := cpp
OBJEXT      := o

ESP_FLAGS   := -DESP32 -DSPIDER_DISTRO_MICRO -DSPIDER_OS_NONE -mlongcalls -ffunction-sections -fdata-sections -fno-exceptions -fno-rtti

CFLAGS      := -Wall -std=c++20 -DSPIDER_COMPILING {dollar}(ESP_FLAGS)
LFLAGS      := -Wl,--gc-sections -mlongcalls
INC         := -I../../src/

# Exclude desktop-only modules
EXCLUDE     := {dollar}(SRCDIR)/spider/runtime/util/Terminal.cpp \\
               {dollar}(SRCDIR)/spider/runtime/debug/LiveDebug.cpp \\
               {dollar}(SRCDIR)/spider/SpiderRuntime.cpp

# ESP32 specific entry point (local to this build folder)
EXTRA       := ./main_esp32.cpp

SOURCES     := {dollar}(filter-out {dollar}(EXCLUDE), {dollar}(shell find {dollar}(SRCDIR) -type f -name "*.{dollar}(SRCEXT)" 2>/dev/null)) {dollar}(EXTRA)
OBJECTS     := {dollar}(patsubst ./%,{dollar}(BUILDDIR)/%,{dollar}(patsubst {dollar}(SRCDIR)/%,{dollar}(BUILDDIR)/%,{dollar}(SOURCES:.{dollar}(SRCEXT)=.{dollar}(OBJEXT))))

all: directories {dollar}(TARGET)
{tab}@echo "Build complete: {dollar}(TARGETDIR)/{dollar}(TARGET)"

remake: cleaner all

directories:
{tab}@mkdir -p {dollar}(TARGETDIR)
{tab}@mkdir -p {dollar}(BUILDDIR)

clean:
{tab}@{dollar}(RM) -rf {dollar}(BUILDDIR)

cleaner: clean
{tab}@{dollar}(RM) -rf {dollar}(TARGETDIR)

{dollar}(TARGET): {dollar}(OBJECTS)
{tab}@echo "Linking {dollar}(TARGET)..."
{tab}{dollar}(CC) {dollar}(LFLAGS) -o {dollar}(TARGETDIR)/{dollar}(TARGET) {dollar}^
{tab}@echo "Done!"

{dollar}(BUILDDIR)/%.{dollar}(OBJEXT): {dollar}(SRCDIR)/%.{dollar}(SRCEXT)
{tab}@mkdir -p {dollar}(dir {dollar}@)
{tab}@echo "Compiling {dollar}<..."
{tab}{dollar}(CC) {dollar}(CFLAGS) {dollar}(INC) -c -o {dollar}@ {dollar}<

{dollar}(BUILDDIR)/%.{dollar}(OBJEXT): ./%.{dollar}(SRCEXT)
{tab}@mkdir -p {dollar}(dir {dollar}@)
{tab}@echo "Compiling {dollar}<..."
{tab}{dollar}(CC) {dollar}(CFLAGS) {dollar}(INC) -c -o {dollar}@ {dollar}<

.PHONY: all remake clean cleaner
"""

with open('Makefile', 'w', newline='\n') as f:
    f.write(content)
print("Makefile generated successfully!")
