PORT    := 8002
PIDFILE := var/api.pid
LOGFILE := var/api-8002.log
UVICORN := .venv/bin/uvicorn
HEALTH_URL := http://127.0.0.1:$(PORT)/health

.DEFAULT_GOAL := help
.PHONY: help start stop restart status showlogs

help: ## List available targets
	@grep -E '^[a-zA-Z_-]+:.*?## ' $(MAKEFILE_LIST) | \
	    awk 'BEGIN {FS = ":.*?## "}; {printf "  %-12s %s\n", $$1, $$2}'

start: ## Start the API server in the background on port 8002
	@mkdir -p var
	@if [ -f $(PIDFILE) ] && kill -0 $$(cat $(PIDFILE)) 2>/dev/null; then \
	    echo "Already running (PID $$(cat $(PIDFILE)))"; \
	else \
	    setsid sh -c 'echo $$$$ > $(PIDFILE); exec $(UVICORN) repo_scoping.web_api.app:app --host 127.0.0.1 --port $(PORT)' \
	        >> $(LOGFILE) 2>&1 & \
	    PID=""; \
	    for i in $$(seq 1 50); do \
	        if [ -f $(PIDFILE) ]; then PID=$$(cat $(PIDFILE)); fi; \
	        if [ -n "$$PID" ] && ! kill -0 $$PID 2>/dev/null; then break; fi; \
	        if [ -n "$$PID" ] && curl -fsS $(HEALTH_URL) >/dev/null 2>&1; then \
	            echo "Started (PID $$PID) — http://127.0.0.1:$(PORT)/ui"; \
	            exit 0; \
	        fi; \
	        sleep 0.1; \
	    done; \
	    rm -f $(PIDFILE); \
	    echo "Failed to start API server on http://127.0.0.1:$(PORT)/ui"; \
	    echo "Recent log output:"; \
	    tail -40 $(LOGFILE) 2>/dev/null || true; \
	    exit 1; \
	fi

stop: ## Stop the API server
	@PIDS=""; \
	if [ -f $(PIDFILE) ]; then \
	    FILE_PID=$$(cat $(PIDFILE)); \
	    if kill -0 $$FILE_PID 2>/dev/null; then \
	        PIDS="$$FILE_PID"; \
	    fi; \
	    rm -f $(PIDFILE); \
	fi; \
	FOUND=$$(ss -tlnp 2>/dev/null | awk '/127\.0\.0\.1:$(PORT)/{match($$0,/pid=([0-9]+)/,m); if(m[1]) print m[1]}'); \
	for p in $$FOUND; do \
	    case " $$PIDS " in *" $$p "*) ;; *) PIDS="$$PIDS $$p" ;; esac; \
	done; \
	PIDS=$$(echo $$PIDS | tr -s ' ' | sed 's/^ //;s/ $$//'); \
	if [ -z "$$PIDS" ]; then \
	    echo "Not running"; \
	else \
	    for p in $$PIDS; do kill $$p 2>/dev/null && echo "Stopped PID $$p"; done; \
	fi

restart: stop start ## Restart the API server

status: ## Show whether the API server is running and its resource usage
	@PID=""; \
	if [ -f $(PIDFILE) ]; then \
	    CANDIDATE=$$(cat $(PIDFILE)); \
	    kill -0 $$CANDIDATE 2>/dev/null && PID=$$CANDIDATE; \
	fi; \
	if [ -z "$$PID" ]; then \
	    FOUND=$$(ss -tlnp 2>/dev/null | awk '/127\.0\.0\.1:$(PORT)/{match($$0,/pid=([0-9]+)/,m); if(m[1]) print m[1]}' | head -1); \
	    [ -n "$$FOUND" ] && PID=$$FOUND; \
	fi; \
	if [ -z "$$PID" ]; then \
	    echo "Status:  stopped"; \
	    echo "URL:     http://127.0.0.1:$(PORT)/ui"; \
	    echo "Log:     $(LOGFILE)"; \
	else \
	    START=$$(ps -o lstart= -p $$PID 2>/dev/null | sed 's/^ *//'); \
	    CPU=$$(ps -o %cpu= -p $$PID 2>/dev/null | tr -d ' '); \
	    MEM=$$(ps -o %mem= -p $$PID 2>/dev/null | tr -d ' '); \
	    RSS=$$(ps -o rss=  -p $$PID 2>/dev/null | tr -d ' '); \
	    RSS_MB=$$(( $${RSS:-0} / 1024 )); \
	    echo "Status:  running"; \
	    echo "PID:     $$PID"; \
	    echo "Since:   $$START"; \
	    echo "CPU:     $${CPU}%"; \
	    echo "Memory:  $${MEM}%  ($$RSS_MB MB RSS)"; \
	    echo "URL:     http://127.0.0.1:$(PORT)/ui"; \
	    echo "Log:     $(LOGFILE)"; \
	fi

showlogs: ## Tail the API server log
	@tail -f $(LOGFILE)