VENV ?= .venv
PY := $(VENV)/bin/python
PIP := $(PY) -m pip
UV := uv
CONFIG ?= config.toml

# detect uv, fallback to pip
HAS_UV := $(shell command -v $(UV) >/dev/null 2>&1 && echo 1 || echo 0)
ifeq ($(HAS_UV),1)
  VENV_CREATE = $(UV) venv $(VENV) --python 3.11 2>/dev/null || $(UV) venv $(VENV)
  PIP_INSTALL = $(UV) pip install --python $(PY)
else
  VENV_CREATE = python3 -m venv $(VENV)
  PIP_INSTALL = $(PIP) install
endif

.PHONY: default install install-cpu install-rocm install-cuda extract ast sync verify clean help

default: ast

help:
	@echo "Targets:"
	@echo "  make install        # auto-detect GPU (ROCm>CUDA>CPU) via rocm-smi/nvidia-smi/torch, create venv, install deps"
	@echo "  make install-cpu    # force CPU torch"
	@echo "  make install-rocm   # force ROCm torch (RX 7900 XTX gfx1100)"
	@echo "  make install-cuda   # force CUDA torch"
	@echo "  make extract        # run extract.py (uses config.toml if present)"
	@echo "  make ast            # run sync_audio_test.py (audio_sync_test, PyQtGraph GUI)"
	@echo "  make sync LAG=0.042 # run apply_sync.py to mux synced output (LAG in seconds)"
	@echo "  make verify LAG=0.042  # verify sync: video + dual waveform player"
	@echo "  make clean"

install:
	@if [ ! -d $(VENV) ]; then echo "=> creating venv $(VENV)"; $(VENV_CREATE); else echo "=> venv exists $(VENV)"; fi
	@echo "=> detecting GPU..."
	@HAS_ROCM=0; HAS_CUDA=0; PYVER=$$($(PY) -c "import sys;print(f'{sys.version_info.major}{sys.version_info.minor}')" 2>/dev/null || echo 314); \
	if command -v rocm-smi >/dev/null 2>&1 && [ -c /dev/kfd ] && lspci 2>/dev/null | grep -qi amd; then HAS_ROCM=1; fi; \
	if command -v nvidia-smi >/dev/null 2>&1; then HAS_CUDA=1; fi; \
	$(PIP_INSTALL) --upgrade pip; \
	if [ $$HAS_ROCM -eq 1 ]; then \
		echo "   ROCm detected (AMD) -> torch rocm6.3 (fallback 6.2, cp314 needs 6.3+)"; \
		$(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/rocm6.3 || \
		( echo "   rocm6.3 failed, trying rocm6.2"; $(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/rocm6.2 ) || \
		( echo "   ROCm torch failed for py$$PYVER -> fallback cpu (numpy still works)"; $(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/cpu || echo "   torch install failed, continuing with numpy CPU fallback"); \
	elif [ $$HAS_CUDA -eq 1 ]; then \
		echo "   CUDA detected (NVIDIA) -> torch cu121 (fallback cu124)"; \
		$(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/cu121 || \
		$(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/cu124 || \
		( echo "   CUDA torch failed -> fallback cpu"; $(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/cpu || true); \
	else \
		echo "   No GPU -> torch cpu"; \
		$(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/cpu || echo "   torch cpu install failed (py$$PYVER), continuing with numpy CPU fallback"; \
	fi
	@echo "=> installing common deps..."
	@$(PIP_INSTALL) soundfile scipy numpy pyqtgraph PyQt6 || echo "   common deps failed"
	@echo "=> optional: sounddevice (playback), openai-whisper (language detection), mpv (video player)..."
	@$(PIP_INSTALL) sounddevice openai-whisper python-mpv || echo "   optional deps failed (sounddevice/whisper/mpv)"
	@$(PY) -c "import torch, sys; print(f'torch {torch.__version__} cuda_available={torch.cuda.is_available()}', end=''); print(f' device={torch.cuda.get_device_name(0)}' if torch.cuda.is_available() else ' (cpu)')" 2>&1 || echo "torch not available, using numpy CPU fallback (still functional for 90s xcorr)"
	@echo "=> done. Activate: source $(VENV)/bin/activate"

install-cpu:
	@if [ ! -d $(VENV) ]; then $(VENV_CREATE); fi
	$(PIP_INSTALL) --upgrade pip
	$(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/cpu || echo "torch cpu failed, numpy fallback"
	$(PIP_INSTALL) soundfile scipy numpy pyqtgraph PyQt6 sounddevice || true
	$(PY) -c "import torch; print(torch.__version__, torch.cuda.is_available())" 2>&1 || echo "torch not installed, numpy fallback"

install-rocm:
	@if [ ! -d $(VENV) ]; then $(VENV_CREATE); fi
	$(PIP_INSTALL) --upgrade pip
	$(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/rocm6.3 || $(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/rocm6.2 || $(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/cpu || echo "torch install failed, using numpy fallback"
	$(PIP_INSTALL) soundfile scipy numpy pyqtgraph PyQt6 sounddevice || true
	$(PY) -c "import torch; print(torch.__version__, torch.cuda.is_available(), torch.cuda.get_device_name(0) if torch.cuda.is_available() else '')" 2>&1 || echo "torch not installed, numpy fallback"

install-cuda:
	@if [ ! -d $(VENV) ]; then $(VENV_CREATE); fi
	$(PIP_INSTALL) --upgrade pip
	$(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/cu121 || $(PIP_INSTALL) torch torchaudio --index-url https://download.pytorch.org/whl/cu124 || echo "torch cuda failed, fallback cpu"
	$(PIP_INSTALL) soundfile scipy numpy pyqtgraph PyQt6 sounddevice || true
	$(PY) -c "import torch; print(torch.__version__, torch.cuda.is_available(), torch.cuda.get_device_name(0) if torch.cuda.is_available() else '')" 2>&1 || echo "torch not installed"

extract:
	@if [ -x $(PY) ]; then $(PY) extract.py; else python3 extract.py; fi

sync:
	@if [ -x $(PY) ]; then PYTHONPATH=. $(PY) apply_sync.py --config $(CONFIG) --lag $(LAG); else PYTHONPATH=. python3 apply_sync.py --config $(CONFIG) --lag $(LAG); fi

verify:
	@if [ -x $(PY) ]; then LC_NUMERIC=C PYTHONPATH=. QT_QPA_PLATFORM=xcb QT_STYLE_OVERRIDE=Fusion $(PY) verify_sync.py --config $(CONFIG) --lag $(LAG) --mode short; else LC_NUMERIC=C PYTHONPATH=. QT_QPA_PLATFORM=xcb QT_STYLE_OVERRIDE=Fusion python3 verify_sync.py --config $(CONFIG) --lag $(LAG) --mode short; fi

ast:
	@AUDIO_A=$$(python3 -c "import tomllib; c=tomllib.load(open('config.toml','rb')); print(c['extract'].get('file_a',''))" 2>/dev/null); \
	AUDIO_B=$$(python3 -c "import tomllib; c=tomllib.load(open('config.toml','rb')); print(c['extract'].get('file_b',''))" 2>/dev/null); \
	OUT=$$(python3 -c "import tomllib; c=tomllib.load(open('config.toml','rb')); print(c['extract'].get('out_dir','extracted'))" 2>/dev/null); \
	STEM_A=$$(basename "$$AUDIO_A" | sed 's/\.[^.]*$$//'); \
	STEM_B=$$(basename "$$AUDIO_B" | sed 's/\.[^.]*$$//'); \
	NEED_EXTRACT=0; \
	if [ ! -f "$$OUT/$${STEM_A}_audio.wav" ] || [ ! -f "$$OUT/$${STEM_B}_audio.wav" ]; then NEED_EXTRACT=1; fi; \
	if [ $$NEED_EXTRACT -eq 1 ]; then \
		echo "=> extracted wavs not found, running make extract first..."; \
		$(MAKE) extract; \
	else \
		echo "=> extracted wavs exist ($$OUT/$${STEM_A}_audio.wav, $$OUT/$${STEM_B}_audio.wav), skipping extract"; \
	fi
	@if [ -x $(PY) ]; then LC_NUMERIC=C PYTHONPATH=. QT_STYLE_OVERRIDE=Fusion $(PY) sync_audio_test.py --config $(CONFIG); else LC_NUMERIC=C PYTHONPATH=. QT_STYLE_OVERRIDE=Fusion python3 sync_audio_test.py --config $(CONFIG); fi

clean:
	rm -rf $(VENV) __pycache__ .pytest_cache