eure/bobo

package slack

import (
    "io"

    "github.com/slack-go/slack"

    "github.com/eure/bobo/engine"
)

// ReplyThread sends a message in the channel.
func (e *SlackEngine) Reply(channel, text string) error {
    reply := e.slackRTM.NewOutgoingMessage(text, channel)
    e.slackRTM.SendMessage(reply)
    return nil
}

// ReplyThread sends a message in the thread of threadTimestamp.
func (e *SlackEngine) ReplyThread(channel, text, threadTimestamp string) error {
    reply := e.slackRTM.NewOutgoingMessage(text, channel)
    reply.ThreadTimestamp = threadTimestamp
    e.slackRTM.SendMessage(reply)
    return nil
}

// ReactEmoji adds reaction emoji to a message.
func (e *SlackEngine) ReactEmoji(channel, emoji, msgTimestamp string) error {
    return e.slackClient.AddReaction(emoji, slack.ItemRef{
        Channel:   channel,
        Timestamp: msgTimestamp,
    })
}

// FileUpload uploads file.
func (e *SlackEngine) FileUpload(channel string, file io.Reader, filename string) error {
    return e.FileUploadWithType(channel, file, filename, "")
}

// FileUploadWithType uploads file with file type.
// erf: https://api.slack.com/types/file#file_types
func (e *SlackEngine) FileUploadWithType(channel string, file io.Reader, filename, filetype string) error {
    _, err := e.slackClient.UploadFile(slack.FileUploadParameters{
        Reader:   file,
        Filename: filename,
        Filetype: filetype,
        Channels: []string{channel},
    })
    return err
}

// GetUserByID gets user by given userID.
func (e *SlackEngine) GetUserByID(userID string) (engine.User, error) {
    if !e.hasUser(userID) {
        err := e.fetchUser(userID)
        if err != nil {
            return engine.User{}, err
        }
    }

    return e.getUser(userID), nil
}

// GetEmojiByRandom gets emoji randomly.
func (e *SlackEngine) GetEmojiByRandom() (string, error) {
    if len(e.emojiCache) == 0 {
        err := e.fetchAllEmoji()
        if err != nil {
            return "", err
        }
    }

    return e.getEmojiByRandom(), nil
}