/
flex_unmarshal.go
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/
flex_unmarshal.go
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// Copyright 2018 LINE Corporation
//
// LINE Corporation licenses this file to you under the Apache License,
// version 2.0 (the "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package linebot
import (
"encoding/json"
"errors"
)
// UnmarshalFlexMessageJSON function
func UnmarshalFlexMessageJSON(data []byte) (FlexContainer, error) {
raw := rawFlexContainer{}
if err := json.Unmarshal(data, &raw); err != nil {
return nil, err
}
return raw.Container, nil
}
type rawFlexContainer struct {
Type FlexContainerType `json:"type"`
Container FlexContainer `json:"-"`
}
func (c *rawFlexContainer) UnmarshalJSON(data []byte) error {
type alias rawFlexContainer
raw := alias{}
if err := json.Unmarshal(data, &raw); err != nil {
return err
}
var container FlexContainer
switch raw.Type {
case FlexContainerTypeBubble:
container = &BubbleContainer{}
case FlexContainerTypeCarousel:
container = &CarouselContainer{}
default:
return errors.New("invalid container type")
}
if err := json.Unmarshal(data, container); err != nil {
return err
}
c.Type = raw.Type
c.Container = container
return nil
}
type rawFlexComponent struct {
Type FlexComponentType `json:"type"`
Component FlexComponent `json:"-"`
}
func (c *rawFlexComponent) UnmarshalJSON(data []byte) error {
type alias rawFlexComponent
raw := alias{}
if err := json.Unmarshal(data, &raw); err != nil {
return err
}
var component FlexComponent
switch raw.Type {
case FlexComponentTypeBox:
component = &BoxComponent{}
case FlexComponentTypeButton:
component = &ButtonComponent{}
case FlexComponentTypeFiller:
component = &FillerComponent{}
case FlexComponentTypeIcon:
component = &IconComponent{}
case FlexComponentTypeImage:
component = &ImageComponent{}
case FlexComponentTypeSeparator:
component = &SeparatorComponent{}
case FlexComponentTypeSpacer:
component = &SpacerComponent{}
case FlexComponentTypeText:
component = &TextComponent{}
default:
return errors.New("invalid flex component type")
}
if err := json.Unmarshal(data, component); err != nil {
return err
}
c.Type = raw.Type
c.Component = component
return nil
}
type rawAction struct {
Type ActionType `json:"type"`
Action TemplateAction `json:"-"`
}
func (c *rawAction) UnmarshalJSON(data []byte) error {
type alias rawAction
raw := alias{}
if err := json.Unmarshal(data, &raw); err != nil {
return err
}
var action TemplateAction
switch raw.Type {
case ActionTypeURI:
action = &URIAction{}
case ActionTypeMessage:
action = &MessageAction{}
case ActionTypePostback:
action = &PostbackAction{}
case ActionTypeDatetimePicker:
action = &DatetimePickerAction{}
default:
return errors.New("invalid action type")
}
if err := json.Unmarshal(data, action); err != nil {
return err
}
c.Type = raw.Type
c.Action = action
return nil
}
// UnmarshalJSON method for BoxComponent
func (c *BoxComponent) UnmarshalJSON(data []byte) error {
type alias BoxComponent
raw := struct {
Contents []rawFlexComponent `json:"contents"`
*alias
}{
alias: (*alias)(c),
}
if err := json.Unmarshal(data, &raw); err != nil {
return err
}
components := make([]FlexComponent, len(raw.Contents))
for i, content := range raw.Contents {
components[i] = content.Component
}
c.Contents = components
return nil
}
// UnmarshalJSON method for ButtonComponent
func (c *ButtonComponent) UnmarshalJSON(data []byte) error {
type alias ButtonComponent
raw := struct {
Action rawAction `json:"action"`
*alias
}{
alias: (*alias)(c),
}
if err := json.Unmarshal(data, &raw); err != nil {
return err
}
c.Action = raw.Action.Action
return nil
}
// UnmarshalJSON method for ImageComponent
func (c *ImageComponent) UnmarshalJSON(data []byte) error {
type alias ImageComponent
raw := struct {
Action rawAction `json:"action"`
*alias
}{
alias: (*alias)(c),
}
if err := json.Unmarshal(data, &raw); err != nil {
return err
}
c.Action = raw.Action.Action
return nil
}
// UnmarshalJSON method for TextComponent
func (c *TextComponent) UnmarshalJSON(data []byte) error {
type alias TextComponent
raw := struct {
Action rawAction `json:"action"`
*alias
}{
alias: (*alias)(c),
}
if err := json.Unmarshal(data, &raw); err != nil {
return err
}
c.Action = raw.Action.Action
return nil
}