go-music-player/music-player/pkg/server/actions.go

package server

import (
	"encoding/json"

	"github.com/go-redis/redis/v7"
)

type ActionType string

const (
  StateSet ActionType = "STATE_SET"
  ClientConnected ActionType = "CLIENT_CONNECTED"
  ClientDisconnected ActionType = "CLIENT_DISCONNECTED"
)

type Action struct {
  Type ActionType 	`json:"type"`
  FromClient *string 	`json:"fromClient"`
  Payload interface{} 	`json:"payload"`
}

func broadcastAction(thisPodClients *map[string]*Client, action *Action) []error {
  var errors []error

  for _, client := range(*thisPodClients) {
    if err := client.conn.WriteJSON(action); err != nil {
      errors = append(errors, err)
    }
  }

  return errors
}

func publishAction(rdb *redis.Client, action *Action) error {
  payload, err := json.Marshal(action)
  if err != nil {
    return err
  }
  if _, err := rdb.Publish(TOPIC_BROADCAST, payload).Result(); err != nil {
    return err
  }
  return nil
}