Add FileInfo and get file []byte in plugin api (#9269)

* Add FileInfo and get file []byte in plugin api

* Regenerated plugin mocks

* Rename ReadFileAtPath to ReadFile

plugin/plugintest/api.go

@@ -449,6 +449,31 @@ func (_m *API) GetDirectChannel(userId1 string, userId2 string) (*model.Channel,
 	return r0, r1
 }
 
+// GetFileInfo provides a mock function with given fields: fileId
+func (_m *API) GetFileInfo(fileId string) (*model.FileInfo, *model.AppError) {
+	ret := _m.Called(fileId)
+
+	var r0 *model.FileInfo
+	if rf, ok := ret.Get(0).(func(string) *model.FileInfo); ok {
+		r0 = rf(fileId)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*model.FileInfo)
+		}
+	}
+
+	var r1 *model.AppError
+	if rf, ok := ret.Get(1).(func(string) *model.AppError); ok {
+		r1 = rf(fileId)
+	} else {
+		if ret.Get(1) != nil {
+			r1 = ret.Get(1).(*model.AppError)
+		}
+	}
+
+	return r0, r1
+}
+
 // GetGroupChannel provides a mock function with given fields: userIds
 func (_m *API) GetGroupChannel(userIds []string) (*model.Channel, *model.AppError) {
 	ret := _m.Called(userIds)
@@ -907,6 +932,31 @@ func (_m *API) PublishWebSocketEvent(event string, payload map[string]interface{
 	_m.Called(event, payload, broadcast)
 }
 
+// ReadFile provides a mock function with given fields: path
+func (_m *API) ReadFile(path string) ([]byte, *model.AppError) {
+	ret := _m.Called(path)
+
+	var r0 []byte
+	if rf, ok := ret.Get(0).(func(string) []byte); ok {
+		r0 = rf(path)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).([]byte)
+		}
+	}
+
+	var r1 *model.AppError
+	if rf, ok := ret.Get(1).(func(string) *model.AppError); ok {
+		r1 = rf(path)
+	} else {
+		if ret.Get(1) != nil {
+			r1 = ret.Get(1).(*model.AppError)
+		}
+	}
+
+	return r0, r1
+}
+
 // RegisterCommand provides a mock function with given fields: command
 func (_m *API) RegisterCommand(command *model.Command) error {
 	ret := _m.Called(command)