Add SendMail to plugin API (#10082)

* Add SendMail to plugin API

* Update per feedback

Co-Authored-By: cpanato <ctadeu@gmail.com>

plugin/api.go

@@ -465,6 +465,11 @@ type API interface {
 	// do not need to add that info.
 	// keyValuePairs should be primitive go types or other values that can be encoded by encoding/gob
 	LogWarn(msg string, keyValuePairs ...interface{})
+
+	// SendMail sends an email to a specific address
+	//
+	// Minimum server version: 5.7
+	SendMail(to, subject, htmlBody string) *model.AppError
 }
 
 var handshake = plugin.HandshakeConfig{

plugin/client_rpc_generated.go

@@ -3556,3 +3556,33 @@ func (s *apiRPCServer) LogWarn(args *Z_LogWarnArgs, returns *Z_LogWarnReturns) e
 	}
 	return nil
 }
+
+type Z_SendMailArgs struct {
+	A string
+	B string
+	C string
+}
+
+type Z_SendMailReturns struct {
+	A *model.AppError
+}
+
+func (g *apiRPCClient) SendMail(to, subject, htmlBody string) *model.AppError {
+	_args := &Z_SendMailArgs{to, subject, htmlBody}
+	_returns := &Z_SendMailReturns{}
+	if err := g.client.Call("Plugin.SendMail", _args, _returns); err != nil {
+		log.Printf("RPC call to SendMail API failed: %s", err.Error())
+	}
+	return _returns.A
+}
+
+func (s *apiRPCServer) SendMail(args *Z_SendMailArgs, returns *Z_SendMailReturns) error {
+	if hook, ok := s.impl.(interface {
+		SendMail(to, subject, htmlBody string) *model.AppError
+	}); ok {
+		returns.A = hook.SendMail(args.A, args.B, args.C)
+	} else {
+		return encodableError(fmt.Errorf("API SendMail called but not implemented."))
+	}
+	return nil
+}

plugin/plugintest/api.go

@@ -1974,6 +1974,22 @@ func (_m *API) SendEphemeralPost(userId string, post *model.Post) *model.Post {
 	return r0
 }
 
+// SendMail provides a mock function with given fields: to, subject, htmlBody
+func (_m *API) SendMail(to string, subject string, htmlBody string) *model.AppError {
+	ret := _m.Called(to, subject, htmlBody)
+
+	var r0 *model.AppError
+	if rf, ok := ret.Get(0).(func(string, string, string) *model.AppError); ok {
+		r0 = rf(to, subject, htmlBody)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*model.AppError)
+		}
+	}
+
+	return r0
+}
+
 // SetProfileImage provides a mock function with given fields: userId, data
 func (_m *API) SetProfileImage(userId string, data []byte) *model.AppError {
 	ret := _m.Called(userId, data)