Issue webhook payload (gogs#38)

* Add Issue webhook payload

* Add copyright header

* Whoops, wrote license header in wrong file...

* Move fields of PR/Issue payload to BaseIssuePayload

* Fix license header

* remove BaseIssuePayload

* Add comment to IssuePayload.JSONPayload

* Fix comment mentioning IssuePayload

* Reorder structs

* Mimic GitHub webhooks

Since the Gitea webhooks currently mimic for a big part the way GitHub does webhook, issue comments HookIssueActions have been removed to be added again at a later stage and milestone_set and milestone_cleared have been changed to milestoned and demilestoned, respectively.

* Change also constant names

Author: thehowl

gitea/hook.go

@@ -1,4 +1,5 @@
 // Copyright 2014 The Gogs Authors. All rights reserved.
+// Copyright 2017 The Gitea Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
@@ -147,6 +148,7 @@ type PayloadCommit struct {
 var (
 	_ Payloader = &CreatePayload{}
 	_ Payloader = &PushPayload{}
+	_ Payloader = &IssuePayload{}
 	_ Payloader = &PullRequestPayload{}
 )
 
@@ -277,8 +279,33 @@ const (
 	HookIssueLabelCleared HookIssueAction = "label_cleared"
 	// HookIssueSynchronized synchronized
 	HookIssueSynchronized HookIssueAction = "synchronized"
+	// HookIssueMilestoned is an issue action for when a milestone is set on an issue.
+	HookIssueMilestoned HookIssueAction = "milestoned"
+	// HookIssueDemilestoned is an issue action for when a milestone is cleared on an issue.
+	HookIssueDemilestoned HookIssueAction = "demilestoned"
 )
 
+// IssuePayload represents the payload information that is sent along with an issue event.
+type IssuePayload struct {
+	Secret     string          `json:"secret"`
+	Action     HookIssueAction `json:"action"`
+	Index      int64           `json:"number"`
+	Changes    *ChangesPayload `json:"changes,omitempty"`
+	Issue      *Issue          `json:"issue"`
+	Repository *Repository     `json:"repository"`
+	Sender     *User           `json:"sender"`
+}
+
+// SetSecret modifies the secret of the IssuePayload.
+func (p *IssuePayload) SetSecret(secret string) {
+	p.Secret = secret
+}
+
+// JSONPayload encodes the IssuePayload to JSON, with an indentation of two spaces.
+func (p *IssuePayload) JSONPayload() ([]byte, error) {
+	return json.MarshalIndent(p, "", "  ")
+}
+
 // ChangesFromPayload FIXME
 type ChangesFromPayload struct {
 	From string `json:"from"`
@@ -308,7 +335,7 @@ type PullRequestPayload struct {
 	Sender      *User           `json:"sender"`
 }
 
-// SetSecret FIXME
+// SetSecret modifies the secret of the PullRequestPayload.
 func (p *PullRequestPayload) SetSecret(secret string) {
 	p.Secret = secret
 }