# Storage engine playground helpers.

HAS_CARGO := $(wildcard Cargo.toml)

# Workspace crates discovered under `crates/*/Cargo.toml`. The directory name is
# assumed to match the package name (the convention documented in crates/README.md).
CRATE_MANIFESTS := $(wildcard crates/*/Cargo.toml)
CRATES := $(patsubst crates/%/Cargo.toml,%,$(CRATE_MANIFESTS))
CRATE_FLAGS := $(addprefix -p ,$(CRATES))

.DEFAULT_GOAL := help

.PHONY: help
help: ## Show help messages for all available targets
	@grep -E '^[a-zA-Z_-]+:.*## .*$$' Makefile | \
	awk 'BEGIN {FS = ":.*## "}; {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}'

.PHONY: format
format: ## Apply code formatting
	@if [ -z "$(HAS_CARGO)" ]; then \
		echo "No Cargo.toml found. Skipping Rust formatting."; \
	else \
		cargo fmt --all; \
	fi

.PHONY: format-check
format-check: ## Check code formatting without applying changes
	@if [ -z "$(HAS_CARGO)" ]; then \
		echo "No Cargo.toml found. Skipping Rust format check."; \
	else \
		cargo fmt --all --check; \
	fi

.PHONY: lint
lint: ## Run linters across every crate under crates/
	@if [ -z "$(HAS_CARGO)" ]; then \
		echo "No Cargo.toml found. Skipping lint."; \
	elif [ -z "$(CRATES)" ]; then \
		echo "No crates/*/Cargo.toml found. Skipping lint."; \
	else \
		cargo clippy $(CRATE_FLAGS) --no-deps -- -D warnings -D clippy::unwrap_used -D clippy::expect_used; \
	fi

.PHONY: test
test: ## Run unit, integration, and doc tests across all features (no benches)
	@if [ -z "$(HAS_CARGO)" ]; then \
		echo "No Cargo.toml found. Skipping tests."; \
	else \
		cargo test --all-features; \
	fi

.PHONY: bench
bench: ## Run benchmarks across all features
	@if [ -z "$(HAS_CARGO)" ]; then \
		echo "No Cargo.toml found. Skipping benchmarks."; \
	else \
		cargo bench --all-features; \
	fi

.PHONY: bench-check
bench-check: ## Type-check benchmark code without running it
	@if [ -z "$(HAS_CARGO)" ]; then \
		echo "No Cargo.toml found. Skipping bench check."; \
	else \
		cargo check --benches --all-features --quiet; \
	fi

.PHONY: check
check: format-check lint test bench-check viewer-test ## Run all checks (format-check, lint, test, bench-check, viewer-test)

.PHONY: clean
clean: ## Remove build output
	@if [ -z "$(HAS_CARGO)" ]; then \
		echo "No Cargo.toml found. Nothing to clean."; \
	else \
		cargo clean; \
	fi

EXPORTER_DIR := tools/exporter
EXPORTER_FIXTURES := crates/plan-runner/fixtures
EXAMPLES_DIR := $(EXPORTER_DIR)/examples

.PHONY: export-fixtures
export-fixtures: ## Regenerate plan JSON for every tools/exporter/examples/*.scenario.json (needs Cabal and GHC; use `make shell` first).
	@if ! command -v cabal >/dev/null 2>&1; then \
		echo "cabal not found. Enter the dev shell with 'make shell' (or 'nix develop') first."; \
		exit 1; \
	fi
	@cd $(EXPORTER_DIR) && cabal build plan-export
	@mkdir -p $(EXPORTER_FIXTURES)
	@for sc in $(EXAMPLES_DIR)/*.scenario.json; do \
		base=$$(basename $$sc .scenario.json); \
		out=$(EXPORTER_FIXTURES)/$$base.json; \
		echo "exporting $$sc -> $$out"; \
		(cd $(EXPORTER_DIR) && cabal run -v0 plan-export -- examples/$$base.scenario.json) > $$out; \
	done

.PHONY: examples
examples: export-fixtures ## Regenerate fixtures from scenarios and run them through plan-runner against their oracles.
	@cargo test -p plan-runner --test examples

DEMO_SCENARIO ?= two_atom_join

.PHONY: demo
demo: ## Run the end-to-end demo: query -> geolog plan -> Geomerge storage -> execution -> verified results
	@if [ -z "$(HAS_CARGO)" ]; then \
		echo "No Cargo.toml found. Skipping demo."; \
		exit 1; \
	fi
	@echo "=== End-to-end demo: query -> plan -> Geomerge -> results ==="
	@echo ""
	@python3 -c 'import json, sys; \
s = json.load(open(sys.argv[1])); \
arity = lambda t: len(s["schema"][t]["columns"]); \
term = lambda a, i: a["values"].get(str(i), {}).get("var", "_"); \
atoms = ", ".join(a["table"] + "(" + ", ".join(term(a, i) for i in range(arity(a["table"]))) + ")" for a in s["atoms"]); \
print("query (" + sys.argv[1] + "):"); \
print("  " + atoms)' tools/exporter/examples/$(DEMO_SCENARIO).scenario.json
	@echo ""
	@echo "The committed plan below was produced from this query by the geolog"
	@echo "planner via tools/exporter (make export-fixtures regenerates it)."
	@echo ""
	@result=$$(cargo run -q -p plan-runner -- --trace --backend geomerge crates/plan-runner/fixtures/$(DEMO_SCENARIO).json); \
	echo ""; \
	echo "result bindings:"; \
	echo "$$result" | python3 -m json.tool --indent 2
	@echo ""
	@echo "Inspect the plan visually: run 'make viewer' and open"
	@echo "  http://localhost:$(VIEWER_PORT)/tools/plan-viewer/index.html?fixture=../../crates/plan-runner/fixtures/$(DEMO_SCENARIO).json"

.PHONY: viewer-test
viewer-test: ## Check the plan viewer's JS engine against every fixture oracle (needs Node)
	@if ! command -v node >/dev/null 2>&1; then \
		echo "node not found. Skipping plan viewer engine check."; \
	else \
		node tools/plan-viewer/test.js; \
	fi

VIEWER_PORT ?= 8000

.PHONY: viewer
viewer: ## Serve the repository over HTTP for the plan viewer (override the port with VIEWER_PORT=...)
	@if ! command -v python3 >/dev/null 2>&1; then \
		echo "python3 not found. Enter the dev shell with 'make shell' (or 'nix develop') first."; \
		exit 1; \
	fi
	@echo "Plan viewer: http://localhost:$(VIEWER_PORT)/tools/plan-viewer/index.html"
	@echo "Example: http://localhost:$(VIEWER_PORT)/tools/plan-viewer/index.html?fixture=../../crates/plan-runner/fixtures/two_atom_join.json"
	@python3 -m http.server $(VIEWER_PORT)

.PHONY: shell
shell: ## Enter the Nix dev shell defined in flake.nix
	@nix develop

.PHONY: setup-hooks
setup-hooks: ## Install Git hooks with pre-commit
	@pre-commit install --hook-type pre-commit
	@pre-commit install --hook-type pre-push
	@pre-commit install-hooks

.PHONY: test-hooks
test-hooks: ## Run pre-commit hooks across all files
	@pre-commit run --all-files --show-diff-on-failure