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slack_json.go
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slack_json.go
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package slack
import (
"regexp"
"strings"
)
// MessagePayload used within the Slack service
type MessagePayload struct {
Text string `json:"text"`
BotName string `json:"username,omitempty"`
Blocks []block `json:"blocks,omitempty"`
Attachments []attachment `json:"attachments,omitempty"`
ThreadTS string `json:"thread_ts,omitempty"`
Channel string `json:"channel,omitempty"`
IconEmoji string `json:"icon_emoji,omitempty"`
IconURL string `json:"icon_url,omitempty"`
}
var iconURLPattern = regexp.MustCompile(`https?://`)
// SetIcon sets the appropriate icon field in the payload based on whether the input is a URL or not
func (p *MessagePayload) SetIcon(icon string) {
p.IconURL = ""
p.IconEmoji = ""
if icon != "" {
if iconURLPattern.MatchString(icon) {
p.IconURL = icon
} else {
p.IconEmoji = icon
}
}
}
type block struct {
Type string `json:"type"`
Text blockText `json:"text"`
}
type blockText struct {
Type string `json:"type"`
Text string `json:"text"`
}
type attachment struct {
Title string `json:"title,omitempty"`
Fallback string `json:"fallback,omitempty"`
Text string `json:"text"`
Color string `json:"color,omitempty"`
Fields []legacyField `json:"fields,omitempty"`
Footer string `json:"footer,omitempty"`
Time int `json:"ts,omitempty"`
}
type legacyField struct {
Title string `json:"title"`
Value string `json:"value"`
Short bool `json:"short,omitempty"`
}
// APIResponse is the default generic response message sent from the API
type APIResponse struct {
Ok bool `json:"ok"`
Error string `json:"error"`
Warning string `json:"warning"`
MetaData struct {
Warnings []string `json:"warnings"`
} `json:"response_metadata"`
}
// CreateJSONPayload compatible with the slack post message API
func CreateJSONPayload(config *Config, message string) interface{} {
var atts []attachment
for _, line := range strings.Split(message, "\n") {
atts = append(atts, attachment{
Text: line,
Color: config.Color,
})
}
payload := MessagePayload{
ThreadTS: config.ThreadTS,
Text: config.Title,
BotName: config.BotName,
Attachments: atts,
}
payload.SetIcon(config.Icon)
if config.Channel != "webhook" {
payload.Channel = config.Channel
}
return payload
}