package qemuserver

import (
	"fmt"
	"net/url"
	"os"
	"path"
	"syscall"
	"time"
)

type Options struct {
	QmpAddress string        `yaml:"address"`
	Timeout    time.Duration `yaml:"timeout"`
	Name       string        `yaml:"name"`
	Audio      AudioOptions  `yaml:"audio_options"`
	Video      VideoOptions  `yaml:"video_options"`
}

type AudioOptions struct {
	Device     string `yaml:"device"`
	BufferSize uint16 `yaml:"buffer_size"` // in bytes
}

type VideoOptions struct {
	Height int     `yaml:"height"`
	Width  int     `yaml:"width"`
	FPS    float32 `yaml:"fps"`
}

func ExampleOptions() *Options {
	return &Options{
		QmpAddress: (&url.URL{
			Scheme: "tcp",
			Host:   "localhost:4444",
		}).String(),
		Timeout: time.Duration(30 * time.Second),
		Name:    "ace-qemu",
		Audio: AudioOptions{
			Device:     "snd0",
			BufferSize: 2048,
		},
		Video: VideoOptions{
			Height: 768,
			Width:  1024,
			FPS:    60,
		},
	}
}

func (o *Options) MakeFIFO() (string, error) {
	path := path.Join(
		os.TempDir(),
		fmt.Sprintf("%s-%s-audio", o.Name, o.Audio.Device),
	)
	os.Remove(path)
	return path, syscall.Mkfifo(path, 0600)
}