# DiffSeeker Makefile
# Usage: make help

SHELL := /bin/sh

PYTHON ?= python3
PIP ?= pip3
VENV_DIR ?= .venv
VENV_PY := $(VENV_DIR)/bin/python
VENV_PIP := $(VENV_DIR)/bin/pip

# Default DB/CSV outputs for convenience targets
OUTCSV ?= cfa-output.csv
DB ?= diffseeker.db
WALKDIR ?= .
VOLUME ?= UNKNOWN
HASH ?= sha256
RESERVE ?= 0

# Excludes can be overridden: make scan EXCLUDES=".git .svn"
EXCLUDES ?= .git .svn

# Docker image tags (local)
PY_IMG ?= diffseeker-python:dev
RS_IMG ?= diffseeker-rust:dev

.DEFAULT_GOAL := help

.PHONY: help
help:
	@printf "%s\n" "DiffSeeker targets:"
	@printf "%s\n" ""
	@printf "%s\n" "Python:"
	@printf "%s\n" "  make venv                 Create venv and install Python package (editable)"
	@printf "%s\n" "  make py-install           Install Python package into existing venv"
	@printf "%s\n" "  make py-test              Run Python tests"
	@printf "%s\n" "  make py-clean             Remove Python build artifacts"
	@printf "%s\n" "  make scan                 Run mpchunkcfa scan -> CSV"
	@printf "%s\n" "  make scan-db              Run mpchunkcfa scan -> CSV + SQLite"
	@printf "%s\n" ""
	@printf "%s\n" "Rust:"
	@printf "%s\n" "  make rs-build             Build Rust CLI (release)"
	@printf "%s\n" "  make rs-test              Run Rust tests"
	@printf "%s\n" "  make rs-clean             Clean Rust build artifacts"
	@printf "%s\n" ""
	@printf "%s\n" "Docker:"
	@printf "%s\n" "  make docker-python        Build Python Docker image"
	@printf "%s\n" "  make docker-rust          Build Rust Docker image"
	@printf "%s\n" "  make docker-scan          Run Python scan in container (bind-mount current dir)"
	@printf "%s\n" ""
	@printf "%s\n" "Variables (override as needed):"
	@printf "%s\n" "  WALKDIR=., VOLUME=NAME, OUTCSV=FILE.csv, DB=FILE.db, HASH=sha256, RESERVE=0"
	@printf "%s\n" "  EXCLUDES='.git .svn'"

# -------------------------
# Python environment
# -------------------------

.PHONY: venv
venv: $(VENV_PY) py-install

$(VENV_PY):
	$(PYTHON) -m venv $(VENV_DIR)
	$(VENV_PIP) install --upgrade pip setuptools wheel

.PHONY: py-install
py-install: $(VENV_PY)
	$(VENV_PIP) install -e .

.PHONY: py-test
py-test: $(VENV_PY)
	$(VENV_PIP) install -e .
	$(VENV_PY) -m pytest -q python/tests

.PHONY: py-clean
py-clean:
	rm -rf build dist *.egg-info .pytest_cache
	find python -name "__pycache__" -type d -prune -exec rm -rf {} \; || true

.PHONY: venv-clean
venv-clean:
	rm -rf $(VENV_DIR)

# -------------------------
# Convenience scan targets
# -------------------------

# Build --exclude args from space-separated EXCLUDES
EXCLUDE_ARGS = $(foreach e,$(EXCLUDES),--exclude $(e))

.PHONY: scan
scan: $(VENV_PY)
	$(VENV_PIP) install -e .
	$(VENV_DIR)/bin/mpchunkcfa --walk "$(WALKDIR)" -V "$(VOLUME)" -c "$(OUTCSV)" --hash "$(HASH)" $(EXCLUDE_ARGS) --reserve-cores "$(RESERVE)"

.PHONY: scan-db
scan-db: $(VENV_PY)
	$(VENV_PIP) install -e .
	$(VENV_DIR)/bin/mpchunkcfa --walk "$(WALKDIR)" -V "$(VOLUME)" -c "$(OUTCSV)" --hash "$(HASH)" $(EXCLUDE_ARGS) --db "$(DB)" --reserve-cores "$(RESERVE)"

# -------------------------
# Rust
# -------------------------

.PHONY: rs-build
rs-build:
	cargo build --release -p diffseeker_cli

.PHONY: rs-test
rs-test:
	cargo test

.PHONY: rs-clean
rs-clean:
	cargo clean

# -------------------------
# Docker
# -------------------------

.PHONY: docker-python
docker-python:
	docker build -t $(PY_IMG) -f docker/Dockerfile.python .

.PHONY: docker-rust
docker-rust:
	docker build -t $(RS_IMG) -f docker/Dockerfile.rust .

# Run the Python mpchunkcfa in a container, bind-mount current directory to /work
# Example:
#   make docker-scan WALKDIR=/work VOLUME=VOL_A OUTCSV=/work/vol_a.csv
.PHONY: docker-scan
docker-scan: docker-python
	docker run --rm -it \
	  -v "$(PWD)":/work \
	  -w /work \
	  $(PY_IMG) \
	  --walk "$(WALKDIR)" -V "$(VOLUME)" -c "$(OUTCSV)" --hash "$(HASH)" $(EXCLUDE_ARGS) --reserve-cores "$(RESERVE)"

# -------------------------
# Meta
# -------------------------

.PHONY: all
all: py-test rs-test