refactor(line): centralize action helpers

src/line/actions.ts

@@ -0,0 +1,61 @@
+import type { messagingApi } from "@line/bot-sdk";
+
+export type Action = messagingApi.Action;
+
+/**
+ * Create a message action (sends text when tapped)
+ */
+export function messageAction(label: string, text?: string): Action {
+  return {
+    type: "message",
+    label: label.slice(0, 20),
+    text: text ?? label,
+  };
+}
+
+/**
+ * Create a URI action (opens a URL when tapped)
+ */
+export function uriAction(label: string, uri: string): Action {
+  return {
+    type: "uri",
+    label: label.slice(0, 20),
+    uri,
+  };
+}
+
+/**
+ * Create a postback action (sends data to webhook when tapped)
+ */
+export function postbackAction(label: string, data: string, displayText?: string): Action {
+  return {
+    type: "postback",
+    label: label.slice(0, 20),
+    data: data.slice(0, 300),
+    displayText: displayText?.slice(0, 300),
+  };
+}
+
+/**
+ * Create a datetime picker action
+ */
+export function datetimePickerAction(
+  label: string,
+  data: string,
+  mode: "date" | "time" | "datetime",
+  options?: {
+    initial?: string;
+    max?: string;
+    min?: string;
+  },
+): Action {
+  return {
+    type: "datetimepicker",
+    label: label.slice(0, 20),
+    data: data.slice(0, 300),
+    mode,
+    initial: options?.initial,
+    max: options?.max,
+    min: options?.min,
+  };
+}