/*
 * Copyright (c) 2025 The GoPlus Authors (goplus.org). All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package monitor

import (
	"fmt"
	"os"

	"github.com/goplus/llgo/cmd/internal/base"
	"github.com/goplus/llgo/cmd/internal/flags"
	"github.com/goplus/llgo/internal/monitor"
)

// Cmd represents the monitor command.
var Cmd = &base.Command{
	UsageLine: "llgo monitor [flags] [executable]",
	Short:     "Monitor serial output from device",
}

func init() {
	flags.AddEmbeddedFlags(&Cmd.Flag)
	Cmd.Run = runMonitor
}

func runMonitor(cmd *base.Command, args []string) {
	cmd.Flag.Parse(args)
	args = cmd.Flag.Args()

	if len(args) > 1 {
		fmt.Fprintf(os.Stderr, "llgo monitor: too many arguments\n")
		os.Exit(1)
	}

	if flags.Port == "" && flags.Target == "" {
		fmt.Fprintf(os.Stderr, "llgo monitor: must specify either -port or -target\n")
		return
	}

	var executable string
	if len(args) == 1 {
		executable = args[0]
	}

	config := monitor.MonitorConfig{
		Port:       flags.Port,
		Target:     flags.Target,
		BaudRate:   flags.BaudRate,
		Executable: executable,
	}

	if err := monitor.Monitor(config, true); err != nil {
		fmt.Fprintf(os.Stderr, "llgo monitor: %v\n", err)
		os.Exit(1)
	}
}