[MM-41290] Add Endpoint to complete onboarding (#19435)

model/client4.go

@@ -7432,6 +7432,20 @@ func (c *Client4) MarkNoticesViewed(ids []string) (*Response, error) {
 	return BuildResponse(r), nil
 }
 
+func (c *Client4) CompleteOnboarding(request *CompleteOnboardingRequest) (*Response, error) {
+	buf, err := json.Marshal(request)
+	if err != nil {
+		return nil, NewAppError("CompleteOnboarding", "api.marshal_error", nil, err.Error(), http.StatusInternalServerError)
+	}
+	r, err := c.DoAPIPost(c.systemRoute()+"/onboarding/complete", string(buf))
+	if err != nil {
+		return BuildResponse(r), err
+	}
+	defer closeBody(r)
+
+	return BuildResponse(r), nil
+}
+
 // CreateUpload creates a new upload session.
 func (c *Client4) CreateUpload(us *UploadSession) (*UploadSession, *Response, error) {
 	buf, err := json.Marshal(us)

model/onboarding.go

@@ -0,0 +1,25 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+// CompleteOnboardingRequest describes parameters of the requested plugin.
+type CompleteOnboardingRequest struct {
+	InstallPlugins []string `json:"install_plugins"` // InstallPlugins is a list of plugins to be installed
+}
+
+// CompleteOnboardingRequest decodes a json-encoded request from the given io.Reader.
+func CompleteOnboardingRequestFromReader(reader io.Reader) (*CompleteOnboardingRequest, error) {
+	var r *CompleteOnboardingRequest
+	err := json.NewDecoder(reader).Decode(&r)
+	if err != nil {
+		return nil, err
+	}
+
+	return r, nil
+}