#!/bin/bash
#
# ALPHA ARENA - Master Control
#
# Simple commands:
#   ./alpha start    Start in background
#   ./alpha stop     Stop the service
#   ./alpha status   Check if running
#   ./alpha logs     Watch live logs
#   ./alpha open     Open in browser
#

set -e

# Configuration
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

APP_NAME="Alpha Arena"
PID_FILE="$SCRIPT_DIR/.alpha.pid"
LOG_FILE="$SCRIPT_DIR/data/logs/server.log"
HOST="${ALPHA_HOST:-127.0.0.1}"
PORT="${ALPHA_PORT:-8000}"
URL="http://${HOST}:${PORT}"

# Ensure log directory exists
mkdir -p "$SCRIPT_DIR/data/logs"

# ============================================================================
# macOS Notifications
# ============================================================================

notify() {
    local title="$1"
    local message="$2"
    local sound="${3:-default}"

    osascript -e "display notification \"$message\" with title \"$title\" sound name \"$sound\"" 2>/dev/null || true
}

notify_success() {
    notify "$APP_NAME" "$1" "Glass"
}

notify_error() {
    notify "$APP_NAME" "❌ $1" "Basso"
}

notify_info() {
    notify "$APP_NAME" "$1" "Pop"
}

# ============================================================================
# Helper Functions
# ============================================================================

is_running() {
    if [ -f "$PID_FILE" ]; then
        local pid=$(cat "$PID_FILE")
        if ps -p "$pid" > /dev/null 2>&1; then
            return 0
        fi
    fi
    return 1
}

get_pid() {
    if [ -f "$PID_FILE" ]; then
        cat "$PID_FILE"
    fi
}

wait_for_server() {
    local max_attempts=30
    local attempt=0

    while [ $attempt -lt $max_attempts ]; do
        if curl -s "$URL/api/system/health" > /dev/null 2>&1; then
            return 0
        fi
        sleep 1
        ((attempt++))
    done
    return 1
}

ensure_setup() {
    if [ ! -d ".venv" ]; then
        echo "First-time setup..."
        ./scripts/setup.sh
    fi

    if ! .venv/bin/python -c "import fastapi" 2>/dev/null; then
        echo "Installing dependencies..."
        ./scripts/setup.sh
    fi
}

# ============================================================================
# Commands
# ============================================================================

cmd_start() {
    if is_running; then
        local pid=$(get_pid)
        echo "Already running (PID: $pid)"
        echo "URL: $URL"
        notify_info "Already running"
        return 0
    fi

    echo "Starting $APP_NAME..."
    ensure_setup

    # Start in background
    source .venv/bin/activate
    nohup python -m uvicorn src.web.app:app \
        --host "$HOST" \
        --port "$PORT" \
        >> "$LOG_FILE" 2>&1 &

    local pid=$!
    echo $pid > "$PID_FILE"

    echo "Waiting for server..."
    if wait_for_server; then
        echo ""
        echo "✓ Started successfully (PID: $pid)"
        echo "  URL: $URL"
        echo ""
        echo "Commands:"
        echo "  ./alpha logs    Watch logs"
        echo "  ./alpha open    Open in browser"
        echo "  ./alpha stop    Stop server"
        notify_success "Started on $URL"
    else
        echo "Failed to start. Check logs:"
        echo "  ./alpha logs"
        notify_error "Failed to start"
        rm -f "$PID_FILE"
        return 1
    fi
}

cmd_stop() {
    if ! is_running; then
        echo "Not running"
        return 0
    fi

    local pid=$(get_pid)
    echo "Stopping (PID: $pid)..."

    kill "$pid" 2>/dev/null || true

    # Wait for graceful shutdown
    local attempts=0
    while [ $attempts -lt 10 ]; do
        if ! ps -p "$pid" > /dev/null 2>&1; then
            break
        fi
        sleep 1
        ((attempts++))
    done

    # Force kill if still running
    if ps -p "$pid" > /dev/null 2>&1; then
        kill -9 "$pid" 2>/dev/null || true
    fi

    rm -f "$PID_FILE"
    echo "✓ Stopped"
    notify_info "Stopped"
}

cmd_restart() {
    cmd_stop
    sleep 1
    cmd_start
}

cmd_status() {
    if is_running; then
        local pid=$(get_pid)
        echo "✓ Running"
        echo "  PID: $pid"
        echo "  URL: $URL"

        # Check health
        if curl -s "$URL/api/system/health" > /dev/null 2>&1; then
            echo "  Health: OK"
        else
            echo "  Health: Not responding"
        fi
    else
        echo "✗ Not running"
        echo ""
        echo "Start with: ./alpha start"
    fi
}

cmd_logs() {
    if [ ! -f "$LOG_FILE" ]; then
        echo "No logs yet. Start the server first:"
        echo "  ./alpha start"
        return 1
    fi

    echo "Watching logs (Ctrl+C to exit)..."
    echo "============================================"
    tail -f "$LOG_FILE"
}

cmd_open() {
    if ! is_running; then
        echo "Server not running. Starting..."
        cmd_start
    fi

    echo "Opening $URL..."
    open "$URL" 2>/dev/null || xdg-open "$URL" 2>/dev/null || echo "Open in browser: $URL"
}

cmd_test() {
    echo "Running tests..."
    ensure_setup
    source .venv/bin/activate
    python -m pytest tests/ -v --tb=short

    if [ $? -eq 0 ]; then
        notify_success "All tests passed"
    else
        notify_error "Some tests failed"
    fi
}

cmd_check() {
    ./scripts/check.sh "$@"
}

cmd_help() {
    echo ""
    echo "ALPHA ARENA - Master Control"
    echo ""
    echo "Usage: ./alpha <command>"
    echo ""
    echo "Commands:"
    echo "  start      Start server in background"
    echo "  stop       Stop the server"
    echo "  restart    Restart the server"
    echo "  status     Show server status"
    echo "  logs       Watch live logs"
    echo "  open       Open web UI in browser"
    echo "  test       Run all tests"
    echo "  check      Run system check"
    echo "  help       Show this help"
    echo ""
    echo "Environment variables:"
    echo "  ALPHA_HOST   Host to bind (default: 127.0.0.1)"
    echo "  ALPHA_PORT   Port to bind (default: 8000)"
    echo ""
    echo "Examples:"
    echo "  ./alpha start              # Start on localhost:8000"
    echo "  ALPHA_PORT=9000 ./alpha start  # Start on port 9000"
    echo ""
}

# ============================================================================
# Main
# ============================================================================

case "${1:-}" in
    start)
        cmd_start
        ;;
    stop)
        cmd_stop
        ;;
    restart)
        cmd_restart
        ;;
    status)
        cmd_status
        ;;
    logs|log)
        cmd_logs
        ;;
    open|web)
        cmd_open
        ;;
    test|tests)
        cmd_test
        ;;
    check)
        shift
        cmd_check "$@"
        ;;
    help|--help|-h)
        cmd_help
        ;;
    "")
        cmd_status
        echo ""
        cmd_help
        ;;
    *)
        echo "Unknown command: $1"
        cmd_help
        exit 1
        ;;
esac