# TodoMVC in Nim. See README.md.
SHELL := bash
REPO := $(abspath ../..)
ZIGCC := $(REPO)/scripts/zigcc-aarch64-musl
CACHE := $(CURDIR)/.cache

VERSION ?= $(shell git rev-parse --short HEAD)
SQLITE := sqlite-amalgamation-3540100
SQLITE_URL := https://sqlite.org/2026/$(SQLITE).zip
SQLITE_SHA256 := 0a9c8e34352dad46006aa82836d5383bff9dc6bc9ce5a60553c05aa30e6ad1f9
SQLITE_C := $(CACHE)/sqlite/sqlite3.c
NIMBLE_DIR := $(CACHE)/nimble
DEPS_STAMP := $(NIMBLE_DIR)/.installed

# zig cc (the arm64 C compiler) keeps compiled musl, compiler-rt and every
# object it builds in its caches; keep them here so clean-deps reaches them.
export ZIG_GLOBAL_CACHE_DIR := $(CACHE)/zig-global
export ZIG_LOCAL_CACHE_DIR := $(CACHE)/zig-local

# Every library is compiled from source into a nimcache under .cache/.
NIMFLAGS := --hints:off -d:release --opt:speed \
	--noNimblePath $$(for p in $(NIMBLE_DIR)/pkgs2/*/; do echo --path:$$p; done) \
	--dynlibOverride:sqlite3 -d:sqliteSource=$(SQLITE_C) \
	-d:appVersion=$(VERSION)
ARM64FLAGS := --cpu:arm64 --os:linux --cc:clang \
	--clang.exe=$(ZIGCC) --clang.linkerexe=$(ZIGCC) --passL:-static --passL:-s

SOURCES := $(wildcard src/*.nim src/*.nimf static/*) $(REPO)/shared/base.css $(REPO)/shared/index.css

.PHONY: build build-arm64 test clean clean-deps deps bump unbump deploy

build: dist/app
build-arm64: dist/app-linux-arm64
deps: $(DEPS_STAMP) $(SQLITE_C)

dist/app: $(SOURCES) deps .FORCE
	nim c $(NIMFLAGS) --nimcache:$(CACHE)/nimcache-host -o:$@ src/app.nim

dist/app-linux-arm64: $(SOURCES) deps .FORCE
	nim c $(NIMFLAGS) $(ARM64FLAGS) --nimcache:$(CACHE)/nimcache-arm64 -o:$@ src/app.nim

test: deps
	nim c -r $(NIMFLAGS) -d:testing --nimcache:$(CACHE)/nimcache-test -o:$(CACHE)/test_app tests/test_app.nim

$(DEPS_STAMP): todo.nimble
	source $(REPO)/scripts/env.sh && nimble --nimbleDir:$(NIMBLE_DIR) install --depsOnly -y
	touch $@

$(SQLITE_C):
	mkdir -p $(CACHE)/dl $(CACHE)/sqlite
	[ -f $(CACHE)/dl/$(SQLITE).zip ] || curl -sSfL -o $(CACHE)/dl/$(SQLITE).zip $(SQLITE_URL)
	echo "$(SQLITE_SHA256)  $(CACHE)/dl/$(SQLITE).zip" | sha256sum -c --quiet
	unzip -q -o -j $(CACHE)/dl/$(SQLITE).zip '$(SQLITE)/sqlite3.c' '$(SQLITE)/sqlite3.h' -d $(CACHE)/sqlite
	touch $@

clean:
	rm -rf dist

# Compiled output only: downloaded sources (.cache/nimble, .cache/dl,
# .cache/sqlite) stay, so the next build compiles every library again,
# musl and compiler-rt included.
clean-deps: clean
	rm -rf $(CACHE)/nimcache-host $(CACHE)/nimcache-arm64 $(CACHE)/nimcache-test $(CACHE)/test_app \
		$(CACHE)/zig-global $(CACHE)/zig-local

bump:
	sed -i 's/serverName = "todo-nim"/serverName = "todo-nim bumped"/' src/app.nim

unbump:
	sed -i 's/serverName = "todo-nim bumped"/serverName = "todo-nim"/' src/app.nim

deploy:
	source $(REPO)/scripts/env.sh && carlos deploy --account bfj --app todo-nim \
		--target linux-arm64 --no-prompt --message "$${MESSAGE:-Deploy todo-nim $(VERSION)}" \
		dist/app-linux-arm64

.FORCE: