Add support for pull_request_target webhook event

github/event.go

@@ -98,6 +98,8 @@ func (e *Event) ParsePayload() (payload interface{}, err error) {
 		payload = &PullRequestReviewEvent{}
 	case "PullRequestReviewCommentEvent":
 		payload = &PullRequestReviewCommentEvent{}
+	case "PullRequestTargetEvent":
+		payload = &PullRequestTargetEvent{}
 	case "PushEvent":
 		payload = &PushEvent{}
 	case "ReleaseEvent":

github/event_types.go

@@ -685,6 +685,48 @@ type PullRequestReviewCommentEvent struct {
 	Installation *Installation `json:"installation,omitempty"`
 }
 
+// PullRequestTargetEvent is triggered when a pull request is assigned, unassigned, labeled,
+// unlabeled, opened, edited, closed, reopened, synchronize, ready_for_review,
+// locked, unlocked, a pull request review is requested, or a review request is removed.
+// The Webhook event name is "pull_request_target".
+//
+// GitHub API docs: https://docs.github.com/en/actions/reference/events-that-trigger-workflows#pull_request_target
+type PullRequestTargetEvent struct {
+	// Action is the action that was performed. Possible values are:
+	// "assigned", "unassigned", "labeled", "unlabeled", "opened", "edited", "closed", "reopened",
+	// "ready_for_review", "locked", "unlocked", "review_requested" or "review_request_removed".
+	// If the action is "closed" and the "merged" key is "false", the pull request was closed with unmerged commits.
+	// If the action is "closed" and the "merged" key is "true", the pull request was merged.
+	// While webhooks are also triggered when a pull request is synchronized, Events API timelines
+	// don't include pull request events with the "synchronize" action.
+	Action      *string      `json:"action,omitempty"`
+	Assignee    *User        `json:"assignee,omitempty"`
+	Number      *int         `json:"number,omitempty"`
+	PullRequest *PullRequest `json:"pull_request,omitempty"`
+
+	// The following fields are only populated by Webhook events.
+	Changes *EditChange `json:"changes,omitempty"`
+	// RequestedReviewer is populated in "review_requested", "review_request_removed" event deliveries.
+	// A request affecting multiple reviewers at once is split into multiple
+	// such event deliveries, each with a single, different RequestedReviewer.
+	RequestedReviewer *User `json:"requested_reviewer,omitempty"`
+	// In the event that a team is requested instead of a user, "requested_team" gets sent in place of
+	// "requested_user" with the same delivery behavior.
+	RequestedTeam *Team         `json:"requested_team,omitempty"`
+	Repo          *Repository   `json:"repository,omitempty"`
+	Sender        *User         `json:"sender,omitempty"`
+	Installation  *Installation `json:"installation,omitempty"`
+	Label         *Label        `json:"label,omitempty"` // Populated in "labeled" event deliveries.
+
+	// The following field is only present when the webhook is triggered on
+	// a repository belonging to an organization.
+	Organization *Organization `json:"organization,omitempty"`
+
+	// The following fields are only populated when the Action is "synchronize".
+	Before *string `json:"before,omitempty"`
+	After  *string `json:"after,omitempty"`
+}
+
 // PushEvent represents a git push to a GitHub repository.
 //
 // GitHub API docs: https://docs.github.com/en/developers/webhooks-and-events/webhook-events-and-payloads#push

github/messages.go

@@ -74,9 +74,10 @@ var (
 		"project_card":                   "ProjectCardEvent",
 		"project_column":                 "ProjectColumnEvent",
 		"public":                         "PublicEvent",
+		"pull_request":                   "PullRequestEvent",
 		"pull_request_review":            "PullRequestReviewEvent",
 		"pull_request_review_comment":    "PullRequestReviewCommentEvent",
-		"pull_request":                   "PullRequestEvent",
+		"pull_request_target":            "PullRequestTargetEvent",
 		"push":                           "PushEvent",
 		"repository":                     "RepositoryEvent",
 		"repository_dispatch":            "RepositoryDispatchEvent",

github/messages_test.go

@@ -370,6 +370,10 @@ func TestParseWebHook(t *testing.T) {
 			payload:     &PullRequestReviewCommentEvent{},
 			messageType: "pull_request_review_comment",
 		},
+		{
+			payload:     &PullRequestTargetEvent{},
+			messageType: "pull_request_target",
+		},
 		{
 			payload:     &PushEvent{},
 			messageType: "push",