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package slack
// @NOTE: Blocks are in beta and subject to change.
// More Information: https://api.slack.com/block-kit
// MessageBlockType defines a named string type to define each block type
// as a constant for use within the package.
type MessageBlockType string
const (
MBTSection MessageBlockType = "section"
MBTDivider MessageBlockType = "divider"
MBTImage MessageBlockType = "image"
MBTAction MessageBlockType = "actions"
MBTContext MessageBlockType = "context"
MBTFile MessageBlockType = "file"
MBTInput MessageBlockType = "input"
MBTHeader MessageBlockType = "header"
)
// Block defines an interface all block types should implement
// to ensure consistency between blocks.
type Block interface {
BlockType() MessageBlockType
}
// Blocks is a convenience struct defined to allow dynamic unmarshalling of
// the "blocks" value in Slack's JSON response, which varies depending on block type
type Blocks struct {
BlockSet []Block `json:"blocks,omitempty"`
}
// BlockAction is the action callback sent when a block is interacted with
type BlockAction struct {
ActionID string `json:"action_id"`
BlockID string `json:"block_id"`
Type actionType `json:"type"`
Text TextBlockObject `json:"text"`
Value string `json:"value"`
ActionTs string `json:"action_ts"`
SelectedOption OptionBlockObject `json:"selected_option"`
SelectedOptions []OptionBlockObject `json:"selected_options"`
SelectedUser string `json:"selected_user"`
SelectedUsers []string `json:"selected_users"`
SelectedChannel string `json:"selected_channel"`
SelectedChannels []string `json:"selected_channels"`
SelectedConversation string `json:"selected_conversation"`
SelectedConversations []string `json:"selected_conversations"`
SelectedDate string `json:"selected_date"`
InitialOption OptionBlockObject `json:"initial_option"`
InitialUser string `json:"initial_user"`
InitialChannel string `json:"initial_channel"`
InitialConversation string `json:"initial_conversation"`
InitialDate string `json:"initial_date"`
}
// actionType returns the type of the action
func (b BlockAction) actionType() actionType {
return b.Type
}
// NewBlockMessage creates a new Message that contains one or more blocks to be displayed
func NewBlockMessage(blocks ...Block) Message {
return Message{
Msg: Msg{
Blocks: Blocks{
BlockSet: blocks,
},
},
}
}
// AddBlockMessage appends a block to the end of the existing list of blocks
func AddBlockMessage(message Message, newBlk Block) Message {
message.Msg.Blocks.BlockSet = append(message.Msg.Blocks.BlockSet, newBlk)
return message
}
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