# yt-local Makefile
# Automated tasks for development, translations, and maintenance

.PHONY: help install dev clean test i18n-extract i18n-init i18n-update \
        i18n-compile i18n-stats i18n-clean setup-dev lint format backup \
        restore distclean info check-deps run test-cov i18n-workflow \
        ensure-venv

# Variables
SYSTEM_PYTHON := python3
LANG_CODE     ?= es
VENV_DIR      := venv
PROJECT_NAME  := yt-local

# Use venv python/pip when the venv exists, system otherwise
VENV_PYTHON := $(VENV_DIR)/bin/python
VENV_PIP    := $(VENV_DIR)/bin/pip
PYTHON       = $(if $(wildcard $(VENV_PYTHON)),$(VENV_PYTHON),$(SYSTEM_PYTHON))
PIP          = $(if $(wildcard $(VENV_PIP)),$(VENV_PIP),$(SYSTEM_PYTHON) -m pip)

# Patterns for release artefacts (generate_release.py)
RELEASE_DIR       := yt-local
RELEASE_GLOBS     := yt-local-*.zip python-dist-*.zip
RELEASE_DOWNLOADS := get-pip.py vc15_*.7z
PYTHON_DIST_DIR   := python

# Validate LANG_CODE: only allow letters and underscore, 2-5 chars (e.g. es, pt_BR)
# Guards against shell injection via make i18n-init LANG_CODE="$(malicious)"
LANG_CODE_SAFE := $(shell echo '$(LANG_CODE)' | grep -xE '[a-zA-Z_]{2,5}' || echo '')

## Help -----------------------------------------------------------------------

help: ## Show this help message
	@echo "$(PROJECT_NAME) - Available tasks:"
	@echo ""
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | \
		awk 'BEGIN {FS = ":.*?## "}; {printf "  %-20s %s\n", $$1, $$2}'
	@echo ""
	@echo "Examples:"
	@echo "  make install                 # Install dependencies"
	@echo "  make dev                     # Run development server"
	@echo "  make i18n-extract            # Extract strings for translation"
	@echo "  make i18n-init LANG_CODE=fr  # Initialize French"
	@echo "  make lint                    # Check code style"

## Venv bootstrap (internal) --------------------------------------------------

ensure-venv:
	@if [ ! -f "$(VENV_PYTHON)" ]; then \
		echo "[INFO] Creating virtual environment in $(VENV_DIR)..."; \
		$(SYSTEM_PYTHON) -m venv $(VENV_DIR); \
		if [ -f requirements-dev.txt ]; then \
			echo "[INFO] Installing dependencies (dev)..."; \
			$(VENV_DIR)/bin/pip install -r requirements-dev.txt; \
		else \
			echo "[INFO] Installing dependencies..."; \
			$(VENV_DIR)/bin/pip install -r requirements.txt; \
		fi; \
		echo "[SUCCESS] Virtual environment ready"; \
	fi

## Installation and Setup -----------------------------------------------------

install: ensure-venv ## Install/update project dependencies
	@echo "[INFO] Installing dependencies..."
	$(PIP) install -r requirements.txt
	@echo "[SUCCESS] Dependencies installed"

setup-dev: ensure-venv ## Install dev dependencies (tests, linting)
	@echo "[INFO] Installing dev dependencies..."
	$(PIP) install -r requirements-dev.txt
	@echo "[SUCCESS] Dev dependencies installed"

## Development ----------------------------------------------------------------

dev: ensure-venv ## Run development server
	@echo "[INFO] Starting development server..."
	@echo "[INFO] Server available at: http://localhost:9010"
	$(PYTHON) server.py

run: dev ## Alias for dev

## Testing --------------------------------------------------------------------

test: ensure-venv ## Run tests
	@echo "[INFO] Running tests..."
	@if [ -d "tests" ]; then \
		$(PYTHON) -m pytest -v; \
	else \
		echo "[WARN] No tests directory found"; \
	fi

test-cov: ensure-venv ## Run tests with coverage
	@echo "[INFO] Running tests with coverage..."
	@$(PYTHON) -c "import pytest_cov" 2>/dev/null && \
		$(PYTHON) -m pytest -v --cov=youtube --cov-report=html || \
		echo "[WARN] pytest-cov not installed. Run: make setup-dev"

## Internationalization (i18n) ------------------------------------------------

i18n-extract: ensure-venv ## Extract strings for translation
	@echo "[INFO] Extracting strings for translation..."
	$(PYTHON) manage_translations.py extract
	@echo "[SUCCESS] Strings extracted to translations/messages.pot"

i18n-init: ensure-venv ## Initialize new language (use LANG_CODE=xx)
	@if [ -z "$(LANG_CODE_SAFE)" ]; then \
		echo "[ERROR] Invalid LANG_CODE='$(LANG_CODE)'. Use 2-5 letters (e.g. es, pt_BR)."; \
		exit 1; \
	fi
	@echo "[INFO] Initializing language: $(LANG_CODE_SAFE)"
	$(PYTHON) manage_translations.py init $(LANG_CODE_SAFE)
	@echo "[SUCCESS] Language $(LANG_CODE_SAFE) initialized"
	@echo "[INFO] Edit: translations/$(LANG_CODE_SAFE)/LC_MESSAGES/messages.po"

i18n-update: ensure-venv ## Update existing translations
	@echo "[INFO] Updating existing translations..."
	$(PYTHON) manage_translations.py update
	@echo "[SUCCESS] Translations updated"

i18n-compile: ensure-venv ## Compile translations to binary .mo files
	@echo "[INFO] Compiling translations..."
	$(PYTHON) manage_translations.py compile
	@echo "[SUCCESS] Translations compiled"

i18n-stats: ## Show translation statistics
	@echo "[INFO] Translation statistics:"
	@echo ""
	@for lang_dir in translations/*/; do \
		if [ -d "$$lang_dir" ] && [ "$$lang_dir" != "translations/*/" ]; then \
			lang=$$(basename "$$lang_dir"); \
			po_file="$$lang_dir/LC_MESSAGES/messages.po"; \
			if [ -f "$$po_file" ]; then \
				total=$$(grep -c "^msgid " "$$po_file" 2>/dev/null || echo "0"); \
				translated=$$(grep -c '^msgstr "[^"]' "$$po_file" 2>/dev/null || echo "0"); \
				fuzzy=$$(grep -c "^#, fuzzy" "$$po_file" 2>/dev/null || echo "0"); \
				if [ "$$total" -gt 0 ]; then \
					percent=$$((translated * 100 / total)); \
					echo "  [STAT] $$lang: $$translated/$$total ($$percent%) - Fuzzy: $$fuzzy"; \
				else \
					echo "  [STAT] $$lang: No translations yet"; \
				fi; \
			fi; \
		fi; \
	done
	@echo ""

i18n-clean: ## Clean compiled translation files (.mo only)
	@echo "[INFO] Cleaning compiled .mo files..."
	find translations/ -name "*.mo" -delete 2>/dev/null || true
	@echo "[SUCCESS] .mo files removed"

i18n-workflow: i18n-extract i18n-update i18n-compile i18n-stats ## Complete workflow: extract → update → compile
	@echo "[SUCCESS] Translation workflow completed"

## Code Quality ---------------------------------------------------------------

lint: ensure-venv ## Check code with flake8
	@echo "[INFO] Checking code style..."
	@$(PYTHON) -c "import flake8" 2>/dev/null && \
		$(PYTHON) -m flake8 youtube/ --max-line-length=120 --ignore=E501,W503,E402 \
			--exclude=youtube/ytdlp_service.py,youtube/ytdlp_integration.py,youtube/ytdlp_proxy.py && \
		echo "[SUCCESS] Code style check passed" || \
		echo "[WARN] flake8 not installed. Run: make setup-dev"

format: ensure-venv ## Format code with black (if available)
	@echo "[INFO] Formatting code..."
	@$(PYTHON) -c "import black" 2>/dev/null && \
		$(PYTHON) -m black youtube/ --line-length=120 --exclude='ytdlp_.*\.py' && \
		echo "[SUCCESS] Code formatted" || \
		echo "[WARN] black not installed. Run: make setup-dev"

check-deps: ensure-venv ## Check installed dependencies
	@echo "[INFO] Checking dependencies..."
	@$(PYTHON) -c "import flask_babel; print('[OK] Flask-Babel:', flask_babel.__version__)" 2>/dev/null || echo "[ERROR] Flask-Babel not installed"
	@$(PYTHON) -c "import flask; print('[OK] Flask:', flask.__version__)" 2>/dev/null || echo "[ERROR] Flask not installed"
	@$(PYTHON) -c "import yt_dlp; print('[OK] yt-dlp:', yt_dlp.__version__)" 2>/dev/null || echo "[ERROR] yt-dlp not installed"

## Maintenance ----------------------------------------------------------------

backup: ## Create translations backup
	@echo "[INFO] Creating translations backup..."
	@timestamp=$$(date +%Y%m%d_%H%M%S); \
	tar -czf "translations_backup_$$timestamp.tar.gz" translations/ 2>/dev/null || echo "[WARN] No translations to backup"; \
	if [ -f "translations_backup_$$timestamp.tar.gz" ]; then \
		echo "[SUCCESS] Backup created: translations_backup_$$timestamp.tar.gz"; \
	fi

restore: ## Restore translations from latest backup
	@echo "[INFO] Restoring translations from backup..."
	@latest_backup=$$(find . -maxdepth 1 -name 'translations_backup_*.tar.gz' -print0 | \
		xargs -0 ls -t 2>/dev/null | head -1); \
	if [ -n "$$latest_backup" ]; then \
		tar -xzf "$$latest_backup"; \
		echo "[SUCCESS] Restored from: $$latest_backup"; \
	else \
		echo "[ERROR] No backup files found"; \
	fi

## Cleanup --------------------------------------------------------------------

clean: ## Clean temporary files, caches, and release artefacts
	@echo "[INFO] Cleaning temporary files..."
	# Python byte-code and caches
	find . -type f -name "*.pyc" -delete
	find . -type d -name "__pycache__" -exec rm -rf {} + 2>/dev/null || true
	# Compiled translation files (project-wide)
	find . -type f -name "*.mo" -delete
	# Pytest cache and coverage data
	find . -type d -name ".pytest_cache" -exec rm -rf {} + 2>/dev/null || true
	find . -type d -name "htmlcov" -exec rm -rf {} + 2>/dev/null || true
	find . -type f -name ".coverage" -delete
	# Misc temporary / backup artefacts
	find . -type f \( -name "*.tmp" -o -name "*.bak" -o -name "*.log" \) -delete
	find . -type d -name "*.cache" -exec rm -rf {} + 2>/dev/null || true
	# Checksum files
	find . -type f \( -name "*.sha512sum" -o -name "*.sha256sum" -o -name "*.sha1sum" \
		-o -name "*.md5sum" -o -name "*.b2sum" \) -delete
	# Release artefacts (generate_release.py)
	rm -rf $(RELEASE_DIR)/ $(PYTHON_DIST_DIR)/
	rm -f $(RELEASE_GLOBS) $(RELEASE_DOWNLOADS)
	@echo "[SUCCESS] Temporary files removed"

distclean: clean ## Clean everything including venv
	@echo "[INFO] Cleaning everything..."
	rm -rf $(VENV_DIR)
	@echo "[SUCCESS] Complete cleanup done"

## Project Information --------------------------------------------------------

info: ensure-venv ## Show project information
	@echo "[INFO] $(PROJECT_NAME) - Project information:"
	@echo ""
	@echo "  [INFO] Directory: $$(pwd)"
	@echo "  [INFO] Python: $$($(PYTHON) --version 2>&1)"
	@echo "  [INFO] Pip: $$($(PIP) --version 2>&1 | cut -d' ' -f1-2)"
	@echo ""
	@echo "  [INFO] Configured languages:"
	@for lang_dir in translations/*/; do \
		if [ -d "$$lang_dir" ] && [ "$$lang_dir" != "translations/*/" ]; then \
			echo "    - $$(basename $$lang_dir)"; \
		fi; \
	done
	@echo ""
	@echo "  [INFO] Main files:"
	@echo "    - babel.cfg (i18n configuration)"
	@echo "    - manage_translations.py (i18n CLI)"
	@echo "    - youtube/i18n_strings.py (centralized strings)"
	@echo "    - youtube/ytdlp_service.py (yt-dlp integration)"
	@echo ""

# Default target
.DEFAULT_GOAL := help