1 files changed, 238 insertions, 0 deletions
diff --git a/teleirc/matterbridge/vendor/github.com/slack-go/slack/interactions.go b/teleirc/matterbridge/vendor/github.com/slack-go/slack/interactions.go
new file mode 100644
index 0000000..e362caa
--- /dev/null
+++ b/teleirc/matterbridge/vendor/github.com/slack-go/slack/interactions.go
@@ -0,0 +1,238 @@
+package slack
+
+import (
+	"bytes"
+	"encoding/json"
+)
+
+// InteractionType type of interactions
+type InteractionType string
+
+// ActionType type represents the type of action (attachment, block, etc.)
+type ActionType string
+
+// action is an interface that should be implemented by all callback action types
+type action interface {
+	actionType() ActionType
+}
+
+// Types of interactions that can be received.
+const (
+	InteractionTypeDialogCancellation = InteractionType("dialog_cancellation")
+	InteractionTypeDialogSubmission   = InteractionType("dialog_submission")
+	InteractionTypeDialogSuggestion   = InteractionType("dialog_suggestion")
+	InteractionTypeInteractionMessage = InteractionType("interactive_message")
+	InteractionTypeMessageAction      = InteractionType("message_action")
+	InteractionTypeBlockActions       = InteractionType("block_actions")
+	InteractionTypeBlockSuggestion    = InteractionType("block_suggestion")
+	InteractionTypeViewSubmission     = InteractionType("view_submission")
+	InteractionTypeViewClosed         = InteractionType("view_closed")
+	InteractionTypeShortcut           = InteractionType("shortcut")
+	InteractionTypeWorkflowStepEdit   = InteractionType("workflow_step_edit")
+)
+
+// InteractionCallback is sent from slack when a user interactions with a button or dialog.
+type InteractionCallback struct {
+	Type            InteractionType         `json:"type"`
+	Token           string                  `json:"token"`
+	CallbackID      string                  `json:"callback_id"`
+	ResponseURL     string                  `json:"response_url"`
+	TriggerID       string                  `json:"trigger_id"`
+	ActionTs        string                  `json:"action_ts"`
+	Team            Team                    `json:"team"`
+	Channel         Channel                 `json:"channel"`
+	User            User                    `json:"user"`
+	OriginalMessage Message                 `json:"original_message"`
+	Message         Message                 `json:"message"`
+	Name            string                  `json:"name"`
+	Value           string                  `json:"value"`
+	MessageTs       string                  `json:"message_ts"`
+	AttachmentID    string                  `json:"attachment_id"`
+	ActionCallback  ActionCallbacks         `json:"actions"`
+	View            View                    `json:"view"`
+	ActionID        string                  `json:"action_id"`
+	APIAppID        string                  `json:"api_app_id"`
+	BlockID         string                  `json:"block_id"`
+	Container       Container               `json:"container"`
+	Enterprise      Enterprise              `json:"enterprise"`
+	WorkflowStep    InteractionWorkflowStep `json:"workflow_step"`
+	DialogSubmissionCallback
+	ViewSubmissionCallback
+	ViewClosedCallback
+
+	// FIXME(kanata2): just workaround for backward-compatibility.
+	// See also https://github.com/slack-go/slack/issues/816
+	RawState json.RawMessage `json:"state,omitempty"`
+
+	// BlockActionState stands for the `state` field in block_actions type.
+	// NOTE: InteractionCallback.State has a role for the state of dialog_submission type,
+	// so we cannot use this field for backward-compatibility for now.
+	BlockActionState *BlockActionStates `json:"-"`
+}
+
+type BlockActionStates struct {
+	Values map[string]map[string]BlockAction `json:"values"`
+}
+
+func (ic *InteractionCallback) MarshalJSON() ([]byte, error) {
+	type alias InteractionCallback
+	tmp := alias(*ic)
+	if tmp.Type == InteractionTypeBlockActions {
+		if tmp.BlockActionState == nil {
+			tmp.RawState = []byte(`{}`)
+		} else {
+			state, err := json.Marshal(tmp.BlockActionState.Values)
+			if err != nil {
+				return nil, err
+			}
+			tmp.RawState = []byte(`{"values":` + string(state) + `}`)
+		}
+	} else if ic.Type == InteractionTypeDialogSubmission {
+		tmp.RawState = []byte(tmp.State)
+	}
+	// Use pointer for go1.7
+	return json.Marshal(&tmp)
+}
+
+func (ic *InteractionCallback) UnmarshalJSON(b []byte) error {
+	type alias InteractionCallback
+	tmp := struct {
+		Type InteractionType `json:"type"`
+		*alias
+	}{
+		alias: (*alias)(ic),
+	}
+	if err := json.Unmarshal(b, &tmp); err != nil {
+		return err
+	}
+	*ic = InteractionCallback(*tmp.alias)
+	ic.Type = tmp.Type
+	if ic.Type == InteractionTypeBlockActions {
+		if len(ic.RawState) > 0 {
+			err := json.Unmarshal(ic.RawState, &ic.BlockActionState)
+			if err != nil {
+				return err
+			}
+		}
+	} else if ic.Type == InteractionTypeDialogSubmission {
+		ic.State = string(ic.RawState)
+	}
+	return nil
+}
+
+type Container struct {
+	Type         string      `json:"type"`
+	ViewID       string      `json:"view_id"`
+	MessageTs    string      `json:"message_ts"`
+	ThreadTs     string      `json:"thread_ts,omitempty"`
+	AttachmentID json.Number `json:"attachment_id"`
+	ChannelID    string      `json:"channel_id"`
+	IsEphemeral  bool        `json:"is_ephemeral"`
+	IsAppUnfurl  bool        `json:"is_app_unfurl"`
+}
+
+type Enterprise struct {
+	ID   string `json:"id"`
+	Name string `json:"name"`
+}
+
+type InteractionWorkflowStep struct {
+	WorkflowStepEditID string                `json:"workflow_step_edit_id,omitempty"`
+	WorkflowID         string                `json:"workflow_id"`
+	StepID             string                `json:"step_id"`
+	Inputs             *WorkflowStepInputs   `json:"inputs,omitempty"`
+	Outputs            *[]WorkflowStepOutput `json:"outputs,omitempty"`
+}
+
+// ActionCallback is a convenience struct defined to allow dynamic unmarshalling of
+// the "actions" value in Slack's JSON response, which varies depending on block type
+type ActionCallbacks struct {
+	AttachmentActions []*AttachmentAction
+	BlockActions      []*BlockAction
+}
+
+// MarshalJSON implements the Marshaller interface in order to combine both
+// action callback types back into a single array, like how the api responds.
+// This makes Marshaling and Unmarshaling an InteractionCallback symmetrical
+func (a ActionCallbacks) MarshalJSON() ([]byte, error) {
+	count := 0
+	length := len(a.AttachmentActions) + len(a.BlockActions)
+	buffer := bytes.NewBufferString("[")
+
+	f := func(obj interface{}) error {
+		js, err := json.Marshal(obj)
+		if err != nil {
+			return err
+		}
+		_, err = buffer.Write(js)
+		if err != nil {
+			return err
+		}
+
+		count++
+		if count < length {
+			_, err = buffer.WriteString(",")
+			return err
+		}
+		return nil
+	}
+
+	for _, act := range a.AttachmentActions {
+		err := f(act)
+		if err != nil {
+			return nil, err
+		}
+	}
+	for _, blk := range a.BlockActions {
+		err := f(blk)
+		if err != nil {
+			return nil, err
+		}
+	}
+	buffer.WriteString("]")
+	return buffer.Bytes(), nil
+}
+
+// UnmarshalJSON implements the Marshaller interface in order to delegate
+// marshalling and allow for proper type assertion when decoding the response
+func (a *ActionCallbacks) UnmarshalJSON(data []byte) error {
+	var raw []json.RawMessage
+	err := json.Unmarshal(data, &raw)
+	if err != nil {
+		return err
+	}
+
+	for _, r := range raw {
+		var obj map[string]interface{}
+		err := json.Unmarshal(r, &obj)
+		if err != nil {
+			return err
+		}
+
+		if _, ok := obj["block_id"].(string); ok {
+			action, err := unmarshalAction(r, &BlockAction{})
+			if err != nil {
+				return err
+			}
+
+			a.BlockActions = append(a.BlockActions, action.(*BlockAction))
+			continue
+		}
+
+		action, err := unmarshalAction(r, &AttachmentAction{})
+		if err != nil {
+			return err
+		}
+		a.AttachmentActions = append(a.AttachmentActions, action.(*AttachmentAction))
+	}
+
+	return nil
+}
+
+func unmarshalAction(r json.RawMessage, callbackAction action) (action, error) {
+	err := json.Unmarshal(r, callbackAction)
+	if err != nil {
+		return nil, err
+	}
+	return callbackAction, nil
+}