ifdef CHORDPRO_PIPELINE
	CHORDPRO_CMD = chordpro
else
	CHORDPRO_CMD = docker run --rm \
		--env HOME=$(HOME) --env USER=$(USER) \
		--workdir $(shell pwd) \
		--volume $(HOME):$(HOME) \
		chordpro/chordpro:latest chordpro --config=chordpro.json
endif

SRC_EXTENSION := .cho
CURRENT_DIR := content/current
ARCHIVE_DIR := content/archive

# Find all .cho files in both current and archive
SONG_CHO := $(shell find $(CURRENT_DIR) $(ARCHIVE_DIR) -type f -name "*$(SRC_EXTENSION)")
SONG_PDF := $(SONG_CHO:$(SRC_EXTENSION)=.pdf)
SONG_HTML := $(SONG_CHO:$(SRC_EXTENSION)=.html)

# Songbook only includes current songs (sorted alphabetically)
CURRENT_CHO := $(shell find $(CURRENT_DIR) -type f -name "*$(SRC_EXTENSION)" | sort)
CURRENT_PDF := $(CURRENT_CHO:$(SRC_EXTENSION)=.pdf)
SONGBOOK := content/songbook.pdf

.DEFAULT_GOAL := pdf

# Pattern rules that work for nested directories
content/%.pdf: content/%$(SRC_EXTENSION)
	@echo "Building PDF: $@"
	$(CHORDPRO_CMD) -o $@ $<

content/%.html: content/%$(SRC_EXTENSION)
	@echo "Building HTML: $@"
	$(CHORDPRO_CMD) -o $@ $<

# Aggregate targets
all: pdf html songbook

pdf: $(SONG_PDF)

html: $(SONG_HTML)

songbook: $(SONGBOOK)

# Songbook combines alphabetically sorted PDFs
$(SONGBOOK): $(CURRENT_PDF)
	@echo "Creating songbook (alphabetically sorted)..."
	gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=$@ $(CURRENT_PDF)

clean:
	rm -f $(SONG_PDF) $(SONG_HTML) $(SONGBOOK)