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package bslack
import (
"fmt"
"regexp"
"strings"
"github.com/nlopes/slack"
)
func (b *Bslack) getUsername(id string) string {
for _, u := range b.users {
if u.ID == id {
if u.Profile.DisplayName != "" {
return u.Profile.DisplayName
}
return u.Name
}
}
b.Log.Warnf("Could not find user with ID '%s'", id)
return ""
}
func (b *Bslack) getAvatar(userid string) string {
for _, u := range b.users {
if userid == u.ID {
return u.Profile.Image48
}
}
return ""
}
func (b *Bslack) getChannel(channel string) (*slack.Channel, error) {
if strings.HasPrefix(channel, "ID:") {
return b.getChannelByID(strings.TrimPrefix(channel, "ID:"))
}
return b.getChannelByName(channel)
}
func (b *Bslack) getChannelByName(name string) (*slack.Channel, error) {
if b.channels == nil {
return nil, fmt.Errorf("%s: channel %s not found (no channels found)", b.Account, name)
}
for _, channel := range b.channels {
if channel.Name == name {
return &channel, nil
}
}
return nil, fmt.Errorf("%s: channel %s not found", b.Account, name)
}
func (b *Bslack) getChannelByID(ID string) (*slack.Channel, error) {
if b.channels == nil {
return nil, fmt.Errorf("%s: channel %s not found (no channels found)", b.Account, ID)
}
for _, channel := range b.channels {
if channel.ID == ID {
return &channel, nil
}
}
return nil, fmt.Errorf("%s: channel %s not found", b.Account, ID)
}
var (
mentionRE = regexp.MustCompile(`<@([a-zA-Z0-9]+)>`)
channelRE = regexp.MustCompile(`<#[a-zA-Z0-9]+\|(.+?)>`)
variableRE = regexp.MustCompile(`<!((?:subteam\^)?[a-zA-Z0-9]+)(?:\|@?(.+?))?>`)
urlRE = regexp.MustCompile(`<(.*?)(\|.*?)?>`)
)
// @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users
func (b *Bslack) replaceMention(text string) string {
replaceFunc := func(match string) string {
userID := strings.Trim(match, "@<>")
if username := b.getUsername(userID); userID != "" {
return "@" + username
}
return match
}
return mentionRE.ReplaceAllStringFunc(text, replaceFunc)
}
// @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users
func (b *Bslack) replaceChannel(text string) string {
for _, r := range channelRE.FindAllStringSubmatch(text, -1) {
text = strings.Replace(text, r[0], "#"+r[1], 1)
}
return text
}
// @see https://api.slack.com/docs/message-formatting#variables
func (b *Bslack) replaceVariable(text string) string {
for _, r := range variableRE.FindAllStringSubmatch(text, -1) {
if r[2] != "" {
text = strings.Replace(text, r[0], "@"+r[2], 1)
} else {
text = strings.Replace(text, r[0], "@"+r[1], 1)
}
}
return text
}
// @see https://api.slack.com/docs/message-formatting#linking_to_urls
func (b *Bslack) replaceURL(text string) string {
for _, r := range urlRE.FindAllStringSubmatch(text, -1) {
if len(strings.TrimSpace(r[2])) == 1 { // A display text separator was found, but the text was blank
text = strings.Replace(text, r[0], "", 1)
} else {
text = strings.Replace(text, r[0], r[1], 1)
}
}
return text
}
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