Use glob for path param

This was done such that multiple files
can be loaded that match given glob
patterns. Existing behaviour is preserved
for exact match.

src/config.ts

@@ -2,6 +2,7 @@ import * as core from "@actions/core"
 import {ReportedContentClassifiers} from "@octokit/graphql-schema"
 import {context} from "@actions/github"
 import {readFileSync} from "fs"
+import {create} from "@actions/glob"
 
 export const pullRequestNumber =
   context?.payload?.pull_request?.number ||
@@ -24,8 +25,6 @@ export const deleteOldComment = core.getBooleanInput("delete", {required: true})
 export const hideOldComment = core.getBooleanInput("hide", {required: true})
 export const githubToken = core.getInput("GITHUB_TOKEN", {required: true})
 
-export const body = buildBody()
-
 function buildRepo(): {repo: string; owner: string} {
   return {
     owner: context.repo.owner,
@@ -33,11 +32,19 @@ function buildRepo(): {repo: string; owner: string} {
   }
 }
 
-function buildBody(): string {
-  const path = core.getInput("path", {required: false})
-  if (path) {
+export async function getBody(): Promise<string> {
+  const pathInput = core.getMultilineInput("path", {required: false})
+  const followSymbolicLinks =
+    core.getInput("follow-symbolic-links").toLocaleUpperCase() !== "FALSE"
+  if (pathInput && pathInput.length > 0) {
     try {
-      return readFileSync(path, "utf-8")
+      const globber = await create(pathInput.join("\n"), {
+        followSymbolicLinks,
+        matchDirectories: false
+      })
+      return (await globber.glob())
+        .map(path => readFileSync(path, "utf-8"))
+        .join("\n")
     } catch (error) {
       if (error instanceof Error) {
         core.setFailed(error.message)

src/main.ts

@@ -2,7 +2,7 @@ import * as core from "@actions/core"
 import * as github from "@actions/github"
 import {
   append,
-  body,
+  getBody,
   deleteOldComment,
   githubToken,
   header,
@@ -30,6 +30,8 @@ async function run(): Promise<undefined> {
   }
 
   try {
+    const body = await getBody()
+
     if (!deleteOldComment && !hideOldComment && !body) {
       throw new Error("Either message or path input is required")
     }