feat: add support for changing the working directory (#27)

* Add working-directory to input parameters (issue #13)

* Add error handling for working directory parameter

* Update input order and add documentation for the `working-directory` option

README.md

@@ -80,6 +80,11 @@ jobs:
     # Default: false
     error-on-no-successful-workflow: ''
 
+    # The path where your repository is. This is only required for cases where the repository code is checked out or moved to a specific path.
+    #
+    # Default: .
+    working-directory: ''
+
     # The ID of the github action workflow to check for successful run or the name of the file name containing the workflow. 
     # E.g. 'ci.yml'. If not provided, current workflow id will be used
     #

action.yml

@@ -14,6 +14,9 @@ inputs:
   last-successful-event:
     description: "The type of event to check for the last successful commit corresponding to that workflow-id, E.g. push, pull-request, release etc"
     default: "push"
+  working-directory:
+    description: "The directory where your repository is located"
+    default: "."
   workflow-id:
     description: "The ID of the workflow to track or name of the file name. E.g. ci.yml. Defaults to current workflow"
 
@@ -34,7 +37,7 @@ runs:
     - name: Set base and head SHAs used for nx affected
       id: setSHAs
       shell: bash
-      run: node $GITHUB_ACTION_PATH/dist/index.js ${{ github.token }} ${{ inputs.main-branch-name }} ${{ inputs.error-on-no-successful-workflow }} ${{ inputs.last-successful-event }} ${{ inputs.workflow-id }}
+      run: node $GITHUB_ACTION_PATH/dist/index.js ${{ github.token }} ${{ inputs.main-branch-name }} ${{ inputs.error-on-no-successful-workflow }} ${{ inputs.last-successful-event }} ${{ inputs.working-directory }} ${{ inputs.workflow-id }}
 
     - name: Log base and head SHAs used for nx affected
       shell: bash

find-successful-workflow.js

@@ -2,16 +2,29 @@ const { Octokit } = require("@octokit/action");
 const core = require("@actions/core");
 const github = require('@actions/github');
 const { execSync } = require('child_process');
+const { existsSync } = require('fs');
+const { join } = require('path');
 
 const { runId, repo: { repo, owner }, eventName } = github.context;
 process.env.GITHUB_TOKEN = process.argv[2];
 const mainBranchName = process.argv[3];
 const errorOnNoSuccessfulWorkflow = process.argv[4];
 const lastSuccessfulEvent = process.argv[5];
-const workflowId = process.argv[6];
+const workingDirectory = process.argv[6];
+const workflowId = process.argv[7];
+const defaultWorkingDirectory = '.';
 
 let BASE_SHA;
 (async () => {
+  if (workingDirectory !== defaultWorkingDirectory) {
+    if (existsSync(workingDirectory)) {
+      process.chdir(join(__dirname, workingDirectory));
+    } else {
+      process.stdout.write('\n');
+      process.stdout.write(`WARNING: Working directory '${workingDirectory}' doesn't exist.\n`);
+    }
+  }
+
   const HEAD_SHA = execSync(`git rev-parse HEAD`, { encoding: 'utf-8' });
 
   if (eventName === 'pull_request') {
@@ -33,7 +46,7 @@ let BASE_SHA;
         process.stdout.write(`WARNING: Unable to find a successful workflow run on 'origin/${mainBranchName}'\n`);
         process.stdout.write(`We are therefore defaulting to use HEAD~1 on 'origin/${mainBranchName}'\n`);
         process.stdout.write('\n');
-        process.stdout.write(`NOTE: You can instead make this a hard error by settting 'error-on-no-successful-workflow' on the action in your workflow.\n`);
+        process.stdout.write(`NOTE: You can instead make this a hard error by setting 'error-on-no-successful-workflow' on the action in your workflow.\n`);
 
         BASE_SHA = execSync(`git rev-parse HEAD~1`, { encoding: 'utf-8' });
         core.setOutput('noPreviousBuild', 'true');