CONFIG=config.json
TARGET=ngxconf
NGXCONF=nginx.conf
GENERATED=templates.go
SOURCES=$(wildcard *.go) $(GENERATED)

all: build config
	@echo "Run 'make preview' to view the rendered template or 'make save' to save it in $(NGXCONF)"

build: $(TARGET)

$(TARGET): $(SOURCES)
	@echo "Generating Go sources..."
	@go generate || echo "Failed. We need at least Go version 1.4 to generate code. $(TARGET) still works but you ned to specify the full path to your template directory."
	go build

config: $(CONFIG)

$(CONFIG): $(TARGET)
	./$(TARGET) -genconfig $(CONFIG)
	@echo ""

save: build
	@if [ ! -f $(CONFIG) ]; then make config; fi
	./$(TARGET) -config $(CONFIG) > $(NGXCONF)

preview: build
	@if [ ! -f $(CONFIG) ]; then make config; fi
	@./$(TARGET) -config $(CONFIG)

edit: $(CONFIG)
	$(EDITOR) $(CONFIG)

clean:
	$(RM) $(RMFLAGS) $(CONFIG) $(TARGET) $(NGXCONF) $(GENERATED)
	@echo "package main" > $(GENERATED); \
	echo "// To be replaced by go generate" >> $(GENERATED); \
	echo "func isGenerated() bool { return false }" >> $(GENERATED); \
	echo "func getTemplate() string { return \"\" }" >> $(GENERATED) 

help:
	@echo "Generates a standard nginx config file"
	@echo "make build   -- compile"
	@echo "make config  -- generate config"
	@echo "make save    -- render template and save in $(NGXCONF)"
	@echo "make preview -- preview rendered template"
	@echo "make edit    -- edit $(CONFIG)"
	@echo "make clean   -- removes generated files"