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template.go
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template.go
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// Copyright 2016 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"
)
// TemplateType type
type TemplateType string
// TemplateType constants
const (
TemplateTypeButtons TemplateType = "buttons"
TemplateTypeConfirm TemplateType = "confirm"
TemplateTypeCarousel TemplateType = "carousel"
TemplateTypeImageCarousel TemplateType = "image_carousel"
)
// ImageAspectRatioType type
type ImageAspectRatioType string
// ImageAspectRatioType constants
const (
ImageAspectRatioTypeRectangle ImageAspectRatioType = "rectangle"
ImageAspectRatioTypeSquare ImageAspectRatioType = "square"
)
// ImageSizeType type
type ImageSizeType string
// ImageSizeType constants
const (
ImageSizeTypeCover ImageSizeType = "cover"
ImageSizeTypeContain ImageSizeType = "contain"
)
// Template interface
type Template interface {
json.Marshaler
Template()
}
// ButtonsTemplate type
type ButtonsTemplate struct {
ThumbnailImageURL string
ImageAspectRatio ImageAspectRatioType
ImageSize ImageSizeType
ImageBackgroundColor string
Title string
Text string
Actions []TemplateAction
}
// MarshalJSON method of ButtonsTemplate
func (t *ButtonsTemplate) MarshalJSON() ([]byte, error) {
return json.Marshal(&struct {
Type TemplateType `json:"type"`
ThumbnailImageURL string `json:"thumbnailImageUrl,omitempty"`
ImageAspectRatio ImageAspectRatioType `json:"imageAspectRatio,omitempty"`
ImageSize ImageSizeType `json:"imageSize,omitempty"`
ImageBackgroundColor string `json:"imageBackgroundColor,omitempty"`
Title string `json:"title,omitempty"`
Text string `json:"text"`
Actions []TemplateAction `json:"actions"`
}{
Type: TemplateTypeButtons,
ThumbnailImageURL: t.ThumbnailImageURL,
ImageAspectRatio: t.ImageAspectRatio,
ImageSize: t.ImageSize,
ImageBackgroundColor: t.ImageBackgroundColor,
Title: t.Title,
Text: t.Text,
Actions: t.Actions,
})
}
// WithImageOptions method, ButtonsTemplate can set imageAspectRatio, imageSize and imageBackgroundColor
func (t *ButtonsTemplate) WithImageOptions(imageAspectRatio ImageAspectRatioType, imageSize ImageSizeType, imageBackgroundColor string) *ButtonsTemplate {
t.ImageAspectRatio = imageAspectRatio
t.ImageSize = imageSize
t.ImageBackgroundColor = imageBackgroundColor
return t
}
// ConfirmTemplate type
type ConfirmTemplate struct {
Text string
Actions []TemplateAction
}
// MarshalJSON method of ConfirmTemplate
func (t *ConfirmTemplate) MarshalJSON() ([]byte, error) {
return json.Marshal(&struct {
Type TemplateType `json:"type"`
Text string `json:"text"`
Actions []TemplateAction `json:"actions"`
}{
Type: TemplateTypeConfirm,
Text: t.Text,
Actions: t.Actions,
})
}
// CarouselTemplate type
type CarouselTemplate struct {
Columns []*CarouselColumn
ImageAspectRatio ImageAspectRatioType
ImageSize ImageSizeType
}
// CarouselColumn type
type CarouselColumn struct {
ThumbnailImageURL string `json:"thumbnailImageUrl,omitempty"`
ImageBackgroundColor string `json:"imageBackgroundColor,omitempty"`
Title string `json:"title,omitempty"`
Text string `json:"text"`
Actions []TemplateAction `json:"actions"`
}
// MarshalJSON method of CarouselTemplate
func (t *CarouselTemplate) MarshalJSON() ([]byte, error) {
return json.Marshal(&struct {
Type TemplateType `json:"type"`
Columns []*CarouselColumn `json:"columns"`
ImageAspectRatio ImageAspectRatioType `json:"imageAspectRatio,omitempty"`
ImageSize ImageSizeType `json:"imageSize,omitempty"`
}{
Type: TemplateTypeCarousel,
Columns: t.Columns,
ImageAspectRatio: t.ImageAspectRatio,
ImageSize: t.ImageSize,
})
}
// WithImageOptions method, CarouselTemplate can set imageAspectRatio and imageSize
func (t *CarouselTemplate) WithImageOptions(imageAspectRatio ImageAspectRatioType, imageSize ImageSizeType) *CarouselTemplate {
t.ImageAspectRatio = imageAspectRatio
t.ImageSize = imageSize
return t
}
// WithImageOptions method, CarouselColumn can set imageBackgroundColor
func (t *CarouselColumn) WithImageOptions(imageBackgroundColor string) *CarouselColumn {
t.ImageBackgroundColor = imageBackgroundColor
return t
}
// ImageCarouselTemplate type
type ImageCarouselTemplate struct {
Columns []*ImageCarouselColumn
}
// ImageCarouselColumn type
type ImageCarouselColumn struct {
ImageURL string `json:"imageUrl"`
Action TemplateAction `json:"action"`
}
// MarshalJSON method of ImageCarouselTemplate
func (t *ImageCarouselTemplate) MarshalJSON() ([]byte, error) {
return json.Marshal(&struct {
Type TemplateType `json:"type"`
Columns []*ImageCarouselColumn `json:"columns"`
}{
Type: TemplateTypeImageCarousel,
Columns: t.Columns,
})
}
// Template implements Template interface
func (*ConfirmTemplate) Template() {}
// Template implements Template interface
func (*ButtonsTemplate) Template() {}
// Template implements Template interface
func (*CarouselTemplate) Template() {}
// Template implements Template interface
func (*ImageCarouselTemplate) Template() {}
// NewConfirmTemplate function
func NewConfirmTemplate(text string, left, right TemplateAction) *ConfirmTemplate {
return &ConfirmTemplate{
Text: text,
Actions: []TemplateAction{left, right},
}
}
// NewButtonsTemplate function
// `thumbnailImageURL` and `title` are optional. they can be empty.
func NewButtonsTemplate(thumbnailImageURL, title, text string, actions ...TemplateAction) *ButtonsTemplate {
return &ButtonsTemplate{
ThumbnailImageURL: thumbnailImageURL,
Title: title,
Text: text,
Actions: actions,
}
}
// NewCarouselTemplate function
func NewCarouselTemplate(columns ...*CarouselColumn) *CarouselTemplate {
return &CarouselTemplate{
Columns: columns,
}
}
// NewCarouselColumn function
// `thumbnailImageURL` and `title` are optional. they can be empty.
func NewCarouselColumn(thumbnailImageURL, title, text string, actions ...TemplateAction) *CarouselColumn {
return &CarouselColumn{
ThumbnailImageURL: thumbnailImageURL,
Title: title,
Text: text,
Actions: actions,
}
}
// NewImageCarouselTemplate function
func NewImageCarouselTemplate(columns ...*ImageCarouselColumn) *ImageCarouselTemplate {
return &ImageCarouselTemplate{
Columns: columns,
}
}
// NewImageCarouselColumn function
func NewImageCarouselColumn(imageURL string, action TemplateAction) *ImageCarouselColumn {
return &ImageCarouselColumn{
ImageURL: imageURL,
Action: action,
}
}