# -----------------------------------------
# Makefile – Bevy project builder
# -----------------------------------------

PROJECT = bevydemo

# Must match the `wasm-bindgen` version pinned in Cargo.toml
# ([target.'cfg(target_arch = "wasm32")'.dependencies] wasm-bindgen = "=0.2.100")
WASM_BINDGEN_VERSION = 0.2.100

BIN_DIR      = bin
DIST_DIR     = dist
WASM_TARGET  = wasm32-unknown-unknown
WASM_RELEASE = target/$(WASM_TARGET)/release/$(PROJECT).wasm
OUTPUT_ZIP   = $(PROJECT)-$(VERSION).html.zip

INDEX_HTML_URL = https://git.teletypegames.org/tools/bevy-tools/raw/branch/master/web/index.html

all: build

build:
	@mkdir -p $(BIN_DIR)
	cargo build --release
	cp target/release/$(PROJECT) $(BIN_DIR)/$(PROJECT)

run:
	cargo run

wasm:
	@mkdir -p $(DIST_DIR)
	cargo build --release --target $(WASM_TARGET)
	wasm-bindgen --target web --no-typescript \
		--out-dir $(DIST_DIR) --out-name game $(WASM_RELEASE)

# -----------------------------------------
# Native binaries. linux-x64: glibc build in the debian-based builder
# image; win-x64: mingw-w64 cross-compile (x86_64-pc-windows-gnu).
# Mac needs osxcross, it is not built here.
# The zip gets the assets/ dir too if the project has one — bevy loads
# it at runtime, it is not embedded in the binary.
# -----------------------------------------

BINARY_SLUGS = win-x64 linux-x64
WIN_TARGET   = x86_64-pc-windows-gnu

# $(1) slug, $(2) built binary, $(3) file name inside the package
define f_pack_binary
	set -e; \
	PKG_DIR="$(PROJECT)-$(VERSION)-$(1)"; \
	rm -rf "$$PKG_DIR" "$$PKG_DIR.zip"; \
	mkdir -p "$$PKG_DIR"; \
	cp "$(2)" "$$PKG_DIR/$(3)"; \
	chmod +x "$$PKG_DIR/$(3)"; \
	if [ -d assets ]; then cp -r assets "$$PKG_DIR/assets"; fi; \
	zip -qr "$$PKG_DIR.zip" "$$PKG_DIR"; \
	rm -rf "$$PKG_DIR"; \
	echo "==> $$PKG_DIR.zip kesz"
endef

binaries:
	@if [ -z "$(VERSION)" ]; then \
		echo "ERROR: VERSION not set!"; exit 1; \
	fi
	@$(MAKE) binary-linux binary-win VERSION=$(VERSION)

binary-linux:
	@echo "==> Building linux-x64 binary"
	cargo build --release
	@$(call f_pack_binary,linux-x64,target/release/$(PROJECT),$(PROJECT))

binary-win:
	@echo "==> Building win-x64 binary"
	CARGO_TARGET_X86_64_PC_WINDOWS_GNU_LINKER=x86_64-w64-mingw32-gcc \
		cargo build --release --target $(WIN_TARGET)
	@$(call f_pack_binary,win-x64,target/$(WIN_TARGET)/release/$(PROJECT).exe,$(PROJECT).exe)

export: wasm
	@if [ -z "$(VERSION)" ]; then \
		echo "ERROR: VERSION not set!"; exit 1; \
	fi
	@echo "==> Downloading index.html"
	curl -sSL $(INDEX_HTML_URL) -o $(DIST_DIR)/index.html
	@echo "==> Packaging HTML/WASM for $(VERSION)"
	zip -r $(OUTPUT_ZIP) -j $(DIST_DIR)/game_bg.wasm $(DIST_DIR)/game.js $(DIST_DIR)/index.html
	@echo "==> Cleaning temporary files"
	rm -f $(DIST_DIR)/game_bg.wasm $(DIST_DIR)/game.js $(DIST_DIR)/index.html

watch:
	fswatch -o src | while read; do make build; done

clean:
	rm -rf $(BIN_DIR) $(DIST_DIR) target

.PHONY: all build run wasm export binaries binary-linux binary-win watch clean