Fix field optionality

We should try to make fields optional or required based
on how Slack treats them.  Some exceptions are Action
where we don't want rug writer to provide a complete
Action definition but rather use helper functions to create
fully populated actions

CHANGELOG.md

@@ -16,7 +16,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Fixed
 -   `SlackMessage` `text` field should be optional
--   Add missing `author_icon` to `Attachment`
+-   `Attachment` `text` field should be optional
+-   `ActionConfirmation` fields should be optional
+-   Add missing `author_icon` and `callback_id` to `Attachment`
 
 ## [0.1.0]: - 2017-05-09
 

package.json

@@ -7,6 +7,7 @@
   },
   "scripts": {
     "test": "tsc -p . && mocha --require intelli-espower-loader --recursive build/test",
+    "cleantest": "rm -rf build && tsc -p . && mocha --require intelli-espower-loader --recursive build/test",
     "autotest": "supervisor -q -n exit -x ./node_modules/.bin/mocha -- --require intelli-espower-loader --recursive build/test"
   },
   "repository": {

src/SlackMessages.ts

@@ -126,9 +126,12 @@ export interface SlackMessage {
     attachments?: Attachment[];
 }
 
-/** Represent slack attachment. */
+/**
+ * Represent slack attachment.
+ * https://api.slack.com/docs/interactive-message-field-guide#attachment_fields
+ */
 export interface Attachment {
-    text: string;
+    text?: string;
     fallback: string;
     mrkdwn_in?: string[];
     color?: string;
@@ -145,6 +148,8 @@ export interface Attachment {
     footer_icon?: string;
     ts?: number;
     actions?: Action[];
+    callback_id?: string;
+    attachment_type?: string;
 }
 
 /** Represents slack attachment field. */
@@ -169,10 +174,10 @@ export interface Action {
 
 /** Represents Slack action confirmation. */
 export interface ActionConfirmation {
-    title: string;
+    title?: string;
     text: string;
-    ok_text: string;
-    dismiss_text: string;
+    ok_text?: string;
+    dismiss_text?: string;
 }
 
 type ActionType = "button";