package redis

import (
	"encoding/json"

	"github.com/pkg/errors"
)

type RedisBatchCommands struct {
	Commands [][]interface{}
}

func NewRedisBatchCommands() *RedisBatchCommands {
	result := RedisBatchCommands{}
	result.Commands = make([][]interface{}, 0)

	return &result
}

func (rbc *RedisBatchCommands) Add(command ...interface{}) {
	rbc.Commands = append(rbc.Commands, command)
}

func (rbc *RedisBatchCommands) AddPublish(key string, message interface{}) error {
	data, err := json.Marshal(message)
	if err != nil {
		return errors.WithStack(err)
	}

	rbc.Add("PUBLISH", ChannelKey(key), data)

	return nil
}

func (rbc *RedisBatchCommands) IsEmpty() bool {
	return len(rbc.Commands) == 0
}

func (rbc *RedisBatchCommands) Clear() {
	rbc.Commands = make([][]interface{}, 0)
}