Add auto merge option (TreTuna#76)

* Add auto merge option

* Update README

* Update action.yml

.gitignore

@@ -3,6 +3,7 @@ githubContextExample.js
 
 # Editors
 .vscode
+.idea
 
 # Logs
 logs

README.md

@@ -54,6 +54,13 @@ JSON array of GitHub team `slug`s that will be requested to review the PR.
 Example: `'["js-team"]'`
 
 Default: `[]`
+### `PULL_REQUEST_AUTO_MERGE_METHOD`
+
+Set a merge method for auto merging.
+
+Options: `merge`, `squash`, `rebase`
+
+Default: `false`
 
 ## Outputs
 

action.yml

@@ -37,6 +37,10 @@ inputs:
     description: "JSON array of label names that will be added to the PR. Example: '['sync']'"
     required: false
     default: '[]'
+  PULL_REQUEST_AUTO_MERGE_METHOD:
+    description: "Set a merge method for auto merging. Options: 'merge', 'squash', 'rebase'"
+    required: false
+    default: 'false'
 outputs:
   PULL_REQUEST_URL:
     description: "URL for either the generated pull request or the currently open one"

index.js

@@ -10,13 +10,15 @@ async function run() {
     const githubToken = core.getInput("GITHUB_TOKEN", { required: true });
     const pullRequestTitle = core.getInput("PULL_REQUEST_TITLE");
     const pullRequestBody = core.getInput("PULL_REQUEST_BODY");
+    const pullRequestAutoMergeMethod = core.getInput("PULL_REQUEST_AUTO_MERGE_METHOD");
     const pullRequestIsDraft =
       core.getInput("PULL_REQUEST_IS_DRAFT").toLowerCase() === "true";
     const contentComparison =
       core.getInput("CONTENT_COMPARISON").toLowerCase() === "true";
     const reviewers = JSON.parse(core.getInput("REVIEWERS"));
     const team_reviewers = JSON.parse(core.getInput("TEAM_REVIEWERS"));
     const labels = JSON.parse(core.getInput("LABELS"));
+    let isMerged = false;
 
     console.log(
       `Should a pull request to ${toBranch} from ${fromBranch} be created?`
@@ -77,8 +79,22 @@ async function run() {
           })
         }
 
+        if (pullRequestAutoMergeMethod) {
+          try {
+            await octokit.rest.pulls.merge({
+              owner,
+              repo,
+              pull_number: pullRequest.number,
+              merge_method: pullRequestAutoMergeMethod
+            });
+            isMerged = true;
+          } catch (err) {
+            isMerged = false;
+          }
+        }
+
         console.log(
-          `Pull request (${pullRequest.number}) successful! You can view it here: ${pullRequest.url}`
+          `Pull request (${pullRequest.number}) successfully created${isMerged ? ' and merged' : ' '}! You can view it here: ${pullRequest.url}`
         );
 
         core.setOutput("PULL_REQUEST_URL", pullRequest.url.toString());