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// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package jira
import (
"bytes"
"net/url"
"strings"
"text/template"
"github.com/mattermost/platform/model"
)
type Webhook struct {
WebhookEvent string
Issue struct {
Self string
Key string
Fields struct {
Assignee *struct {
DisplayName string
Name string
}
Summary string
Description string
Priority *struct {
Id string
Name string
}
IssueType struct {
Name string
IconURL string
}
Resolution *struct {
Id string
}
Status struct {
Id string
}
}
}
User struct {
Name string
AvatarUrls map[string]string
DisplayName string
}
Comment struct {
Body string
}
ChangeLog struct {
Items []struct {
FromString string
ToString string
Field string
}
}
}
// Returns the text to be placed in the resulting post or an empty string if nothing should be
// posted.
func (w *Webhook) SlackAttachment() (*model.SlackAttachment, error) {
switch w.WebhookEvent {
case "jira:issue_created":
case "jira:issue_updated":
isResolutionChange := false
for _, change := range w.ChangeLog.Items {
if change.Field == "resolution" {
isResolutionChange = (change.FromString == "") != (change.ToString == "")
break
}
}
if !isResolutionChange {
return nil, nil
}
case "jira:issue_deleted":
if w.Issue.Fields.Resolution != nil {
return nil, nil
}
default:
return nil, nil
}
pretext, err := w.renderText("" +
"{{.User.DisplayName}} {{.Verb}} {{.Issue.Fields.IssueType.Name}} " +
"[{{.Issue.Key}}]({{.JIRAURL}}/browse/{{.Issue.Key}})" +
"")
if err != nil {
return nil, err
}
text, err := w.renderText("" +
"[{{.Issue.Fields.Summary}}]({{.JIRAURL}}/browse/{{.Issue.Key}})" +
"{{if eq .WebhookEvent \"jira:issue_created\"}}{{if ne .Issue.Fields.Description \"\"}}" +
"{{if len .Issue.Fields.Description | lt 3000}}" +
"\n\n{{printf \"%.3000s\" .Issue.Fields.Description}}..." +
"{{else}}" +
"\n\n{{.Issue.Fields.Description}}" +
"{{end}}" +
"{{end}}{{end}}" +
"")
if err != nil {
return nil, err
}
var fields []*model.SlackAttachmentField
if w.WebhookEvent == "jira:issue_created" {
if w.Issue.Fields.Assignee != nil {
fields = append(fields, &model.SlackAttachmentField{
Title: "Assignee",
Value: w.Issue.Fields.Assignee.DisplayName,
Short: true,
})
}
if w.Issue.Fields.Priority != nil {
fields = append(fields, &model.SlackAttachmentField{
Title: "Priority",
Value: w.Issue.Fields.Priority.Name,
Short: true,
})
}
}
return &model.SlackAttachment{
Fallback: pretext,
Color: "#95b7d0",
Pretext: pretext,
Text: text,
Fields: fields,
}, nil
}
func (w *Webhook) renderText(tplBody string) (string, error) {
issueSelf, err := url.Parse(w.Issue.Self)
if err != nil {
return "", err
}
jiraURL := strings.TrimRight(issueSelf.ResolveReference(&url.URL{Path: "/"}).String(), "/")
verb := strings.TrimPrefix(w.WebhookEvent, "jira:issue_")
if w.WebhookEvent == "jira:issue_updated" {
for _, change := range w.ChangeLog.Items {
if change.Field == "resolution" {
if change.ToString == "" && change.FromString != "" {
verb = "reopened"
} else if change.ToString != "" && change.FromString == "" {
verb = "resolved"
}
break
}
}
}
tpl, err := template.New("post").Parse(tplBody)
if err != nil {
return "", err
}
var buf bytes.Buffer
if err := tpl.Execute(&buf, struct {
*Webhook
JIRAURL string
Verb string
}{
Webhook: w,
JIRAURL: jiraURL,
Verb: verb,
}); err != nil {
return "", err
}
return buf.String(), nil
}
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