#!/usr/bin/env bash
# Development server for HdM slides
# Usage:
#   ./dev-server.sh              - Marp live server for all courses (port 1312)
#   ./dev-server.sh 223015b 1313 - Marp live server for single course
#   ./dev-server.sh 223015c 1314 - Marp live server for single course

set -e

# Configuration
SLIDES_DIR="slides"
COURSE="${1:-}"
DEV_PORT="${2:-1312}"

# Colors
GREEN='\033[0;32m'
BLUE='\033[0;34m'
RED='\033[0;31m'
NC='\033[0m' # No Color

# Kill existing process on our port only
kill_port() {
    fuser -k "$DEV_PORT/tcp" 2>/dev/null || true
    sleep 0.5
}

# Main
trap 'echo -e "\n${RED}Shutting down...${NC}"; kill 0; exit 0' SIGINT SIGTERM

kill_port

if [ -n "$COURSE" ]; then
    SERVE_DIR="$SLIDES_DIR/$COURSE"
    echo -e "${GREEN}Marp dev server${NC} · ${BLUE}$COURSE${NC}"
else
    SERVE_DIR="$SLIDES_DIR"
    echo -e "${GREEN}Marp dev server${NC} · ${BLUE}all courses${NC}"
fi

echo -e "  ${BLUE}http://localhost:$DEV_PORT${NC}"
echo -e "  ${BLUE}$SERVE_DIR/${NC}"
echo ""

PORT=$DEV_PORT exec npx @marp-team/marp-cli --server "$SERVE_DIR/"