mirror of
https://github.com/cwinfo/matterbridge.git
synced 2024-09-20 02:12:29 +00:00
498377a230
Changes include: - Refactor of strings into package-wide constants. - Predeclaration of regexps to be instantiated at package load time. - Checking of unchecked errors. - Structural changes: - Adding verifications to type-casting code. - Remove unnecessary 'len(X) > 0' checks before iterating over X. - Remove unnecessary 'else' clause after 'if' with 'return'. - Unexporting of public fields of Bridge struct. - Formatting: - One-field-per-line struct definitions.
114 lines
3.0 KiB
Go
114 lines
3.0 KiB
Go
package bslack
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import (
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"fmt"
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"regexp"
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"strings"
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"github.com/nlopes/slack"
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)
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func (b *Bslack) getUsername(id string) string {
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for _, u := range b.users {
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if u.ID == id {
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if u.Profile.DisplayName != "" {
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return u.Profile.DisplayName
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}
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return u.Name
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}
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}
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b.Log.Warnf("Could not find user with ID '%s'", id)
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return ""
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}
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func (b *Bslack) getAvatar(userid string) string {
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for _, u := range b.users {
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if userid == u.ID {
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return u.Profile.Image48
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}
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}
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return ""
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}
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func (b *Bslack) getChannel(channel string) (*slack.Channel, error) {
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if strings.HasPrefix(channel, "ID:") {
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return b.getChannelByID(strings.TrimPrefix(channel, "ID:"))
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}
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return b.getChannelByName(channel)
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}
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func (b *Bslack) getChannelByName(name string) (*slack.Channel, error) {
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if b.channels == nil {
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return nil, fmt.Errorf("%s: channel %s not found (no channels found)", b.Account, name)
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}
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for _, channel := range b.channels {
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if channel.Name == name {
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return &channel, nil
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}
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}
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return nil, fmt.Errorf("%s: channel %s not found", b.Account, name)
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}
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func (b *Bslack) getChannelByID(ID string) (*slack.Channel, error) {
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if b.channels == nil {
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return nil, fmt.Errorf("%s: channel %s not found (no channels found)", b.Account, ID)
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}
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for _, channel := range b.channels {
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if channel.ID == ID {
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return &channel, nil
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}
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}
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return nil, fmt.Errorf("%s: channel %s not found", b.Account, ID)
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}
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var (
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mentionRE = regexp.MustCompile(`<@([a-zA-Z0-9]+)>`)
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channelRE = regexp.MustCompile(`<#[a-zA-Z0-9]+\|(.+?)>`)
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variableRE = regexp.MustCompile(`<!((?:subteam\^)?[a-zA-Z0-9]+)(?:\|@?(.+?))?>`)
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urlRE = regexp.MustCompile(`<(.*?)(\|.*?)?>`)
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)
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// @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users
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func (b *Bslack) replaceMention(text string) string {
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replaceFunc := func(match string) string {
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userID := strings.Trim(match, "@<>")
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if username := b.getUsername(userID); userID != "" {
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return "@" + username
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}
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return match
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}
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return mentionRE.ReplaceAllStringFunc(text, replaceFunc)
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}
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// @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users
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func (b *Bslack) replaceChannel(text string) string {
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for _, r := range channelRE.FindAllStringSubmatch(text, -1) {
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text = strings.Replace(text, r[0], "#"+r[1], 1)
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}
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return text
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}
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// @see https://api.slack.com/docs/message-formatting#variables
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func (b *Bslack) replaceVariable(text string) string {
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for _, r := range variableRE.FindAllStringSubmatch(text, -1) {
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if r[2] != "" {
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text = strings.Replace(text, r[0], "@"+r[2], 1)
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} else {
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text = strings.Replace(text, r[0], "@"+r[1], 1)
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}
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}
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return text
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}
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// @see https://api.slack.com/docs/message-formatting#linking_to_urls
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func (b *Bslack) replaceURL(text string) string {
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for _, r := range urlRE.FindAllStringSubmatch(text, -1) {
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if len(strings.TrimSpace(r[2])) == 1 { // A display text separator was found, but the text was blank
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text = strings.Replace(text, r[0], "", 1)
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} else {
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text = strings.Replace(text, r[0], r[1], 1)
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}
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}
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return text
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}
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