alexandre-normand/slackscot

package slackscot

import (
    "github.com/slack-go/slack"
)

const (
    // ThreadedReplyOpt is the name of the option indicating a threaded-reply answer
    ThreadedReplyOpt = "threadedReply"
    // BroadcastOpt is the name of the option indicating a broadcast answer
    BroadcastOpt = "broadcast"
    // ThreadTimestamp is the name of the option indicating the explicit timestamp of the thread to reply to
    ThreadTimestamp = "threadTimestamp"
    // EphemeralAnswerToOpt marks an answer to be sent as an ephemeral message to the provided userID
    EphemeralAnswerToOpt = "ephemeralMsgToUserID"
)

// Answer holds data of an Action's Answer: namely, its text and options
// to use when delivering it
type Answer struct {
    Text string

    // Options to apply when sending a message
    Options []AnswerOption

    // BlockKit content blocks to apply when sending the message
    ContentBlocks []slack.Block
}

// AnswerOption defines a function applied to Answers
type AnswerOption func(sendOpts map[string]string)

// AnswerInThread sets threaded replying
func AnswerInThread() AnswerOption {
    return func(sendOpts map[string]string) {
        sendOpts[ThreadedReplyOpt] = "true"
    }
}

// AnswerInExistingThread sets threaded replying with the existing thread timestamp
func AnswerInExistingThread(threadTimestamp string) AnswerOption {
    return func(sendOpts map[string]string) {
        sendOpts[ThreadedReplyOpt] = "true"
        sendOpts[ThreadTimestamp] = threadTimestamp
    }
}

// AnswerInThreadWithBroadcast sets threaded replying with broadcast enabled
func AnswerInThreadWithBroadcast() AnswerOption {
    return func(sendOpts map[string]string) {
        sendOpts[ThreadedReplyOpt] = "true"
        sendOpts[BroadcastOpt] = "true"
    }
}

// AnswerInThreadWithoutBroadcast sets threaded replying with broadcast disabled
func AnswerInThreadWithoutBroadcast() AnswerOption {
    return func(sendOpts map[string]string) {
        sendOpts[ThreadedReplyOpt] = "true"
        sendOpts[BroadcastOpt] = "false"
    }
}

// AnswerWithoutThreading sets an answer to threading (and implicitly, broadcast) disabled
func AnswerWithoutThreading() AnswerOption {
    return func(sendOpts map[string]string) {
        sendOpts[ThreadedReplyOpt] = "false"
    }
}

// AnswerEphemeral sends the answer as an ephemeral message to the provided userID
func AnswerEphemeral(userID string) AnswerOption {
    return func(sendOpts map[string]string) {
        sendOpts[EphemeralAnswerToOpt] = userID
    }
}

// ApplyAnswerOpts applies answering options to build the send configuration
func ApplyAnswerOpts(opts ...AnswerOption) (sendOptions map[string]string) {
    sendOptions = make(map[string]string)
    for _, opt := range opts {
        opt(sendOptions)
    }

    return sendOptions
}