package main

import (
	"context"
	"log"
	"os"
	"slices"

	"maunium.net/go/mautrix"
	"maunium.net/go/mautrix/id"
)

func main() {
	if len(os.Args) != 5 {
		log.Fatalln(os.Args[0] + " <homeserver_url> <user_id> <access_token> <roomid> <via>")
	}

	client, err := mautrix.NewClient(os.Args[1], id.UserID(os.Args[2]), os.Args[3])
	rooms, err := client.JoinedRooms(context.TODO())
	if err != nil {
		log.Fatalln(err)
	}
	if !slices.Contains(rooms.JoinedRooms, id.RoomID(os.Args[4])) {
		_, err := client.JoinRoom(context.TODO(), os.Args[4], &mautrix.ReqJoinRoom{Via: []string{os.Args[5]}})
		if err != nil {
			log.Fatalln(err)
		}
	}
}