Preformatted messages (#97)

* refactor message creation

src/message.ts

@@ -0,0 +1,74 @@
+import fs from 'node:fs/promises'
+import { findFiles } from './files'
+import { Inputs } from './types'
+
+export async function getMessage({
+  messageInput,
+  messagePath,
+  messageCancelled,
+  messageSkipped,
+  messageFailure,
+  messageSuccess,
+  preformatted,
+  status,
+}: Pick<
+  Inputs,
+  | 'messageInput'
+  | 'messageCancelled'
+  | 'messageSuccess'
+  | 'messageFailure'
+  | 'messageSkipped'
+  | 'messagePath'
+  | 'preformatted'
+  | 'status'
+>) {
+  let message
+
+  if (status === 'success') {
+    if (messageSuccess) {
+      message = messageSuccess
+    } else if (messagePath) {
+      message = await getMessageFromPath(messagePath)
+    } else {
+      message = messageInput
+    }
+  }
+
+  if (status === 'failure' && messageFailure) {
+    message = messageFailure
+  }
+
+  if (status === 'cancelled' && messageCancelled) {
+    message = messageCancelled
+  }
+
+  if (status === 'skipped' && messageSkipped) {
+    message = messageSkipped
+  }
+
+  if (!message) {
+    throw new Error('no message, check your message inputs')
+  }
+
+  if (preformatted) {
+    message = `\`\`\`\n${message}\n\`\`\``
+  }
+
+  return message
+}
+
+export async function getMessageFromPath(searchPath: string) {
+  let message = ''
+
+  const files = await findFiles(searchPath)
+
+  for (const [index, path] of files.entries()) {
+    if (index > 0) {
+      message += '\n'
+    }
+
+    message += await fs.readFile(path, { encoding: 'utf8' })
+  }
+
+  return message
+}