package livekit

import (
	"time"

	"github.com/flowy-live/llink/internal/utils"
	"github.com/livekit/protocol/auth"
)

type Client interface {
	GetJoinToken(roomId string, identity string) (string, error)
	ServerUrl() string
}

type clientImpl struct {
	apiSecret string
	apiKey    string
	hostUrl   string
}

func NewClient() Client {
	return &clientImpl{
		apiSecret: utils.MustGetEnv("LIVEKIT_API_SECRET"),
		apiKey:    utils.MustGetEnv("LIVEKIT_API_KEY"),
		hostUrl:   utils.MustGetEnv("LIVEKIT_URL"),
	}
}

func (c *clientImpl) ServerUrl() string {
	return c.hostUrl
}

func (c *clientImpl) GetJoinToken(room, identity string) (string, error) {
	at := auth.NewAccessToken(c.apiKey, c.apiSecret)
	grant := &auth.VideoGrant{
		RoomJoin: true,
		Room:     room,
	}
	at.SetVideoGrant(grant).
		SetIdentity(identity).
		SetValidFor(time.Hour)

	return at.ToJWT()
}