# Windows Makefile for VoskEx NIF
# Uses nmake with Microsoft Visual C++ or MinGW

# Platform-specific settings for Windows
NATIVE_DIR = windows-x86_64
LIB_EXT = dll

# Directories - MIX_APP_PATH is set by elixir_make
!ifndef MIX_APP_PATH
MIX_APP_PATH = _build\dev\lib\vosk_ex
!endif

BUILD_DIR = $(MIX_APP_PATH)\priv
NATIVE_LIB_DIR = priv\native\$(NATIVE_DIR)
# Put NIF in same directory as Vosk DLLs so Windows can find dependencies
TARGET = $(BUILD_DIR)\native\$(NATIVE_DIR)\vosk_nif.dll
SOURCES = c_src\vosk_nif.c

# Erlang include path - must be set by environment or found manually
# You can set ERLANG_PATH manually or elixir_make will try to detect it
!ifndef ERLANG_PATH
# Try common Erlang installation paths
!if exist("C:\Program Files\Erlang OTP\erts-14.2.5\include")
ERLANG_PATH = C:\Program Files\Erlang OTP\erts-14.2.5\include
!else if exist("C:\Program Files\erl-26.2.5\erts-14.2.5\include")
ERLANG_PATH = C:\Program Files\erl-26.2.5\erts-14.2.5\include
!else
ERLANG_PATH = $(ERTS_INCLUDE_DIR)
!endif
!endif

# ============================================================================
# Compiler Detection and Configuration
# ============================================================================

# Check if cl.exe (MSVC) is available
!if [where cl.exe >nul 2>&1] == 0
USE_MSVC = 1
!else
USE_MSVC = 0
!endif

!if $(USE_MSVC) == 1
# ============================================================================
# Microsoft Visual C++ compiler
# ============================================================================
CC = cl
CFLAGS = /O2 /DWIN32 /I"$(ERLANG_PATH)" /Ic_src\include /LD /MD /nologo
LDFLAGS = /link /LIBPATH:"$(NATIVE_LIB_DIR)" libvosk.lib /nologo
COMPILE_CMD = $(CC) $(CFLAGS) $(SOURCES) /Fe:$(TARGET) $(LDFLAGS)
!else
# ============================================================================
# MinGW/GCC compiler (from MSYS2 or similar)
# ============================================================================
CC = gcc
CFLAGS = -O3 -std=c11 -shared -I"$(ERLANG_PATH)" -Ic_src/include -DWIN32
LDFLAGS = -L"$(NATIVE_LIB_DIR)" -lvosk -Wl,--enable-auto-import
COMPILE_CMD = $(CC) $(CFLAGS) -o $(TARGET) $(SOURCES) $(LDFLAGS)
!endif

# Vosk library download settings
VOSK_VERSION = 0.3.45

# ============================================================================
# Build targets
# ============================================================================

all: create_dirs download_vosk copy_libs compile

# Create necessary directories
create_dirs:
	@if not exist "$(NATIVE_LIB_DIR)" mkdir "$(NATIVE_LIB_DIR)"
	@if not exist "$(BUILD_DIR)" mkdir "$(BUILD_DIR)"
	@if not exist "$(BUILD_DIR)\native" mkdir "$(BUILD_DIR)\native"
	@if not exist "$(BUILD_DIR)\native\$(NATIVE_DIR)" mkdir "$(BUILD_DIR)\native\$(NATIVE_DIR)"

# Download Vosk library if not present
download_vosk:
	@if not exist "$(NATIVE_LIB_DIR)\libvosk.dll" powershell -NoProfile -ExecutionPolicy Bypass -File download_vosk.ps1 -Version $(VOSK_VERSION) -TargetDir $(NATIVE_LIB_DIR)

# Copy Vosk library files to build directory (same dir as NIF for Windows DLL search)
copy_libs:
	@if exist "$(NATIVE_LIB_DIR)\libvosk.dll" copy /Y "$(NATIVE_LIB_DIR)\libvosk.dll" "$(BUILD_DIR)\native\$(NATIVE_DIR)\" >nul
	@if exist "$(NATIVE_LIB_DIR)\libvosk.lib" copy /Y "$(NATIVE_LIB_DIR)\libvosk.lib" "$(BUILD_DIR)\native\$(NATIVE_DIR)\" >nul
	@if exist "$(NATIVE_LIB_DIR)\libgcc_s_seh-1.dll" copy /Y "$(NATIVE_LIB_DIR)\libgcc_s_seh-1.dll" "$(BUILD_DIR)\native\$(NATIVE_DIR)\" >nul
	@if exist "$(NATIVE_LIB_DIR)\libstdc++-6.dll" copy /Y "$(NATIVE_LIB_DIR)\libstdc++-6.dll" "$(BUILD_DIR)\native\$(NATIVE_DIR)\" >nul
	@if exist "$(NATIVE_LIB_DIR)\libwinpthread-1.dll" copy /Y "$(NATIVE_LIB_DIR)\libwinpthread-1.dll" "$(BUILD_DIR)\native\$(NATIVE_DIR)\" >nul

# Compile the NIF
compile: $(TARGET)

$(TARGET): $(SOURCES)
	@echo.
	@echo Compiling VoskEx NIF...
!if $(USE_MSVC) == 1
	@echo Compiler: Microsoft Visual C++ (cl.exe)
!else
	@echo Compiler: MinGW GCC
!endif
	@echo ERLANG_PATH: $(ERLANG_PATH)
	@echo.
	$(COMPILE_CMD)
	@echo.
	@echo Build complete: $(TARGET)
	@echo.

# Clean build artifacts
clean:
	@if exist "$(TARGET)" del /F /Q "$(TARGET)"
	@if exist "$(BUILD_DIR)\*.obj" del /F /Q "$(BUILD_DIR)\*.obj"
	@if exist "$(BUILD_DIR)\*.exp" del /F /Q "$(BUILD_DIR)\*.exp"
	@if exist "$(BUILD_DIR)\*.lib" del /F /Q "$(BUILD_DIR)\*.lib"
	@echo Cleaned build artifacts.

.PHONY: all create_dirs download_vosk copy_libs compile clean