Update README

Update dependency GitPython to v3.0.5

.github/workflows/create-pull-request-multi.yml

@@ -1,4 +1,4 @@
-name: create-pull-request workflow
+name: Create Pull Request All Platforms
 on:
   repository_dispatch:
     types: [create-pull-request-multi]
@@ -18,24 +18,27 @@ jobs:
         if:  matrix.platform == 'windows-latest'
         run: echo %DATE% %TIME% > report.txt
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@multi-platform-release
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          COMMIT_MESSAGE: Add report file
-          COMMIT_AUTHOR_EMAIL: peter-evans@users.noreply.github.com
-          COMMIT_AUTHOR_NAME: Peter Evans
-          PULL_REQUEST_TITLE: '[Example] Add report file'
-          PULL_REQUEST_BODY: |
+        id: cpr
+        uses: ./
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: Add report file
+          author-email: peter-evans@users.noreply.github.com
+          author-name: Peter Evans
+          title: '[Example] Add report file'
+          body: |
             New report
             - Contains *today's* date
             - Auto-generated by [create-pull-request][1]
 
             [1]: https://github.com/peter-evans/create-pull-request
-          PULL_REQUEST_LABELS: report, automated pr
-          PULL_REQUEST_ASSIGNEES: peter-evans
-          PULL_REQUEST_REVIEWERS: peter-evans
-          PULL_REQUEST_MILESTONE: 1
-          PULL_REQUEST_BRANCH: example-patches
-          BRANCH_SUFFIX: 'random'
-      - name: Check output environment variable
-        run: echo "Pull Request Number - ${{ env.PULL_REQUEST_NUMBER }}"
+          labels: report, automated pr
+          assignees: peter-evans
+          reviewers: peter-evans
+          milestone: 1
+          branch: example-patches
+          branch-suffix: random
+      - name: Check outputs
+        run: |
+          echo "Pull Request Number - ${{ env.PULL_REQUEST_NUMBER }}"
+          echo "Pull Request Number - ${{ steps.cpr.outputs.pr_number }}"

.github/workflows/create-pull-request.yml

@@ -1,4 +1,4 @@
-name: create-pull-request workflow
+name: Create Pull Request
 on:
   repository_dispatch:
     types: [create-pull-request]
@@ -10,24 +10,27 @@ jobs:
       - name: Create report file
         run: date +%s > report.txt
       - name: Create Pull Request
+        id: cpr
         uses: ./
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          COMMIT_MESSAGE: Add report file
-          COMMIT_AUTHOR_EMAIL: peter-evans@users.noreply.github.com
-          COMMIT_AUTHOR_NAME: Peter Evans
-          PULL_REQUEST_TITLE: '[Example] Add report file'
-          PULL_REQUEST_BODY: |
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: Add report file
+          author-email: peter-evans@users.noreply.github.com
+          author-name: Peter Evans
+          title: '[Example] Add report file'
+          body: |
             New report
             - Contains *today's* date
             - Auto-generated by [create-pull-request][1]
 
             [1]: https://github.com/peter-evans/create-pull-request
-          PULL_REQUEST_LABELS: report, automated pr
-          PULL_REQUEST_ASSIGNEES: peter-evans
-          PULL_REQUEST_REVIEWERS: peter-evans
-          PULL_REQUEST_MILESTONE: 1
-          PULL_REQUEST_BRANCH: example-patches
-          BRANCH_SUFFIX: short-commit-hash
-      - name: Check output environment variable
-        run: echo "Pull Request Number - ${{ env.PULL_REQUEST_NUMBER }}"
+          labels: report, automated pr
+          assignees: peter-evans
+          reviewers: peter-evans
+          milestone: 1
+          branch: example-patches
+          branch-suffix: short-commit-hash
+      - name: Check outputs
+        run: |
+          echo "Pull Request Number - ${{ env.PULL_REQUEST_NUMBER }}"
+          echo "Pull Request Number - ${{ steps.cpr.outputs.pr_number }}"

.github/workflows/dockerhub-description.yml

@@ -2,7 +2,10 @@ name: Update Docker Hub Description
 on:
   push:
     branches:
-    - master
+      - master
+    paths:
+      - README.md
+      - .github/workflows/dockerhub-description.yml
 jobs:
   dockerHubDescription:
     runs-on: ubuntu-latest

.gitignore

@@ -1 +1,2 @@
+node_modules
 .DS_Store

Dockerfile

@@ -1,20 +0,0 @@
-FROM alpine:3.10.3
-
-LABEL maintainer="Peter Evans <mail@peterevans.dev>"
-LABEL repository="https://github.com/peter-evans/create-pull-request"
-LABEL homepage="https://github.com/peter-evans/create-pull-request"
-
-LABEL com.github.actions.name="Create Pull Request"
-LABEL com.github.actions.description="Creates a pull request for changes to your repository in the actions workspace"
-LABEL com.github.actions.icon="git-pull-request"
-LABEL com.github.actions.color="gray-dark"
-
-COPY LICENSE README.md /
-
-RUN apk add python3-dev git git-lfs
-
-COPY requirements.txt /tmp/
-RUN pip3 install --requirement /tmp/requirements.txt
-
-COPY create-pull-request.py /create-pull-request.py
-ENTRYPOINT [ "/create-pull-request.py" ]

README.md

@@ -17,54 +17,54 @@ Create Pull Request action will:
 
 See [examples](examples.md) for detailed use cases.
 
-Linux
 ```yml
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v1.6.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        uses: peter-evans/create-pull-request@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
 ```
 
-Multi platform - Linux, MacOS, Windows (beta)
-```yml
-      - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v1.6.0-multi
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-```
+You can also pin to a [specific release](https://github.com/peter-evans/create-pull-request/releases) version in the format `@v1.x.x`
 
 **Note**: If you want pull requests created by this action to trigger an `on: pull_request` workflow then you must use a [Personal Access Token](https://help.github.com/en/articles/creating-a-personal-access-token-for-the-command-line) instead of the default `GITHUB_TOKEN`.
 See [this issue](https://github.com/peter-evans/create-pull-request/issues/48) for further details.
 
-### Environment variables
+### Action inputs
 
-These variables are *all optional*. If not set, sensible default values will be used.
+These inputs are *all optional*. If not set, sensible default values will be used.
 
 | Name | Description | Default |
 | --- | --- | --- |
-| `COMMIT_MESSAGE` | The message to use when committing changes. | `Auto-committed changes by create-pull-request action` |
-| `COMMIT_AUTHOR_EMAIL` | The email address of the commit author. | For `push` events, the HEAD commit author. Otherwise, <GITHUB_ACTOR>@users.noreply.github.com, where `GITHUB_ACTOR` is the GitHub user that initiated the event. |
-| `COMMIT_AUTHOR_NAME` | The name of the commit author. | For `push` events, the HEAD commit author. Otherwise, <GITHUB_ACTOR>, the GitHub user that initiated the event. |
-| `PULL_REQUEST_TITLE` | The title of the pull request. | `Auto-generated by create-pull-request action` |
-| `PULL_REQUEST_BODY` | The body of the pull request. | `Auto-generated pull request by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub Action` |
-| `PULL_REQUEST_LABELS` | A comma separated list of labels. | none |
-| `PULL_REQUEST_ASSIGNEES` | A comma separated list of assignees (GitHub usernames). | none |
-| `PULL_REQUEST_REVIEWERS` | A comma separated list of reviewers (GitHub usernames) to request a review from. | none |
-| `PULL_REQUEST_TEAM_REVIEWERS` | A comma separated list of GitHub teams to request a review from. | none |
-| `PULL_REQUEST_MILESTONE` | The number of the milestone to associate this pull request with. | none |
-| `PULL_REQUEST_BRANCH` | The branch name. See **Branch naming** below for details. | `create-pull-request/patch` |
-| `PULL_REQUEST_BASE` | Overrides the base branch. **Use with caution!** | Defaults to the currently checked out branch. |
-| `BRANCH_SUFFIX` | The branch suffix type. Valid values are `short-commit-hash`, `timestamp`, `random` and `none`. See **Branch naming** below for details. | `short-commit-hash` |
+| `commit-message` | The message to use when committing changes. | `Auto-committed changes by create-pull-request action` |
+| `author-email` | The email address of the commit author. | For `push` events, the HEAD commit author. Otherwise, <GITHUB_ACTOR>@users.noreply.github.com, where `GITHUB_ACTOR` is the GitHub user that initiated the event. |
+| `author-name` | The name of the commit author. | For `push` events, the HEAD commit author. Otherwise, <GITHUB_ACTOR>, the GitHub user that initiated the event. |
+| `title` | The title of the pull request. | `Auto-generated by create-pull-request action` |
+| `body` | The body of the pull request. | `Auto-generated pull request by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub Action` |
+| `labels` | A comma separated list of labels. | none |
+| `assignees` | A comma separated list of assignees (GitHub usernames). | none |
+| `reviewers` | A comma separated list of reviewers (GitHub usernames) to request a review from. | none |
+| `team-reviewers` | A comma separated list of GitHub teams to request a review from. | none |
+| `milestone` | The number of the milestone to associate this pull request with. | none |
+| `branch` | The branch name. See **Branch naming** below for details. | `create-pull-request/patch` |
+| `base` | Sets the pull request base branch. | Defaults to the currently checked out branch, `GITHUB_REF`. For `pull_request` events, `GITHUB_HEAD_REF` |
+| `branch-suffix` | The branch suffix type. Valid values are `short-commit-hash`, `timestamp`, `random` and `none`. See **Branch naming** below for details. | `short-commit-hash` |
 
-**Output environment variables**
+**Outputs**
 
-- `PULL_REQUEST_NUMBER` - The number of the pull request created.
+The pull request number is output as both an environment variable and a step output.
+Note that in order to read the step output the action step must have an id.
 
-**Debug environment variables**
-
-The following parameter is available for debugging and troubleshooting.
-
-- `DEBUG_EVENT` - If present, outputs the event data that triggered the workflow.
+```yml
+      - name: Create Pull Request
+        id: cpr
+        uses: peter-evans/create-pull-request@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Check outputs
+        run: |
+          echo "Pull Request Number - ${{ env.PULL_REQUEST_NUMBER }}"
+          echo "Pull Request Number - ${{ steps.cpr.outputs.pr_number }}"
+```
 
 ### Branch naming
 
@@ -73,7 +73,7 @@ For branch naming there are two strategies. Always create a new branch each time
 #### Strategy A - Always create a new pull request branch (default)
 
 For this strategy there are three options to suffix the branch name.
-The branch name is defined by the variable `PULL_REQUEST_BRANCH` and defaults to `create-pull-request/patch`. The following options are values for `BRANCH_SUFFIX`.
+The branch name is defined by the input `branch` and defaults to `create-pull-request/patch`. The following options are values for `branch-suffix`.
 
 - `short-commit-hash` (default) - Commits will be made to a branch suffixed with the short SHA1 commit hash. e.g. `create-pull-request/patch-fcdfb59`, `create-pull-request/patch-394710b`
 
@@ -83,7 +83,7 @@ The branch name is defined by the variable `PULL_REQUEST_BRANCH` and defaults to
 
 #### Strategy B - Create and update a pull request branch
 
-To use this strategy, set `BRANCH_SUFFIX` to the value `none`. The variable `PULL_REQUEST_BRANCH` defaults to `create-pull-request/patch`. Commits will be made to this branch and a pull request created. Any subsequent changes will be committed to the *same* branch and reflected in the existing pull request.
+To use this strategy, set `branch-suffix` to the value `none`. The input `branch` defaults to `create-pull-request/patch`. Commits will be made to this branch and a pull request created. Any subsequent changes will be committed to the *same* branch and reflected in the existing pull request.
 
 ### Ignoring files
 
@@ -91,7 +91,7 @@ If there are files or directories you want to ignore you can simply add them to
 
 ## Reference Example
 
-The following workflow is a reference example that sets all the main environment variables.
+The following workflow is a reference example that sets all the main inputs.
 
 See [examples](examples.md) for more realistic use cases.
 
@@ -106,27 +106,30 @@ jobs:
       - name: Create report file
         run: date +%s > report.txt
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v1.6.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          COMMIT_MESSAGE: Add report file
-          COMMIT_AUTHOR_EMAIL: peter-evans@users.noreply.github.com
-          COMMIT_AUTHOR_NAME: Peter Evans
-          PULL_REQUEST_TITLE: '[Example] Add report file'
-          PULL_REQUEST_BODY: |
+        id: cpr
+        uses: peter-evans/create-pull-request@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: Add report file
+          author-email: peter-evans@users.noreply.github.com
+          author-name: Peter Evans
+          title: '[Example] Add report file'
+          body: |
             New report
             - Contains *today's* date
             - Auto-generated by [create-pull-request][1]
 
             [1]: https://github.com/peter-evans/create-pull-request
-          PULL_REQUEST_LABELS: report, automated pr
-          PULL_REQUEST_ASSIGNEES: peter-evans
-          PULL_REQUEST_REVIEWERS: peter-evans
-          PULL_REQUEST_MILESTONE: 1
-          PULL_REQUEST_BRANCH: example-patches
-          BRANCH_SUFFIX: short-commit-hash
-      - name: Check output environment variable
-        run: echo "Pull Request Number - ${{ env.PULL_REQUEST_NUMBER }}"
+          labels: report, automated pr
+          assignees: peter-evans
+          reviewers: peter-evans
+          milestone: 1
+          branch: example-patches
+          branch-suffix: short-commit-hash
+      - name: Check outputs
+        run: |
+          echo "Pull Request Number - ${{ env.PULL_REQUEST_NUMBER }}"
+          echo "Pull Request Number - ${{ steps.cpr.outputs.pr_number }}"
 ```
 
 This reference configuration will create pull requests that look like this:

action.yml

@@ -1,9 +1,41 @@
 name: 'Create Pull Request'
-author: 'Peter Evans'
 description: 'Creates a pull request for changes to your repository in the actions workspace'
+inputs:
+  token:
+    description: 'The GitHub authentication token'
+    required: true
+  commit-message:
+    description: 'The message to use when committing changes.'
+  author-email:
+    description: 'The email address of the commit author.'
+  author-name:
+    description: 'The name of the commit author.'
+  title:
+    description: 'The title of the pull request.'
+  body:
+    description: 'The body of the pull request.'
+  labels:
+    description: 'A comma separated list of labels.'
+  assignees:
+    description: 'A comma separated list of assignees (GitHub usernames).'
+  reviewers:
+    description: 'A comma separated list of reviewers (GitHub usernames) to request a review from.'
+  team-reviewers:
+    description: 'A comma separated list of GitHub teams to request a review from.'
+  milestone:
+    description: 'The number of the milestone to associate this pull request with.'
+  branch:
+    description: 'The pull request branch name.'
+  base:
+    description: 'Sets the pull request base branch.'
+  branch-suffix:
+    description: 'The branch suffix type.'
+outputs:
+  pr_number:
+    description: 'The pull request number'
 runs:
-  using: 'docker'
-  image: 'docker://peterevans/create-pull-request:1.6.1'
+  using: 'node12'
+  main: 'dist/index.js'
 branding:
   icon: 'git-pull-request'  
   color: 'gray-dark'

dist/src/create-pull-request.py

@@ -7,8 +7,7 @@ import string
 import sys
 import time
 from git import Repo
-from github import Github
-from github import GithubException
+from github import Github, GithubException
 
 
 def get_github_event(github_event_path):
@@ -46,6 +45,7 @@ def get_author_default(event_name, event_data):
 
 
 def set_git_config(git, email, name):
+    print("Configuring git user as '%s <%s>'" % (name, email))
     git.config('--global', 'user.email', '"%s"' % email)
     git.config('--global', 'user.name', '"%s"' % name)
 
@@ -58,6 +58,7 @@ def set_git_remote_url(git, token, github_repository):
 
 def checkout_branch(git, remote_exists, branch):
     if remote_exists:
+        print("Checking out branch '%s'" % branch)
         git.stash('--include-untracked')
         git.checkout(branch)
         try:
@@ -66,6 +67,7 @@ def checkout_branch(git, remote_exists, branch):
             git.checkout('--theirs', '.')
             git.reset()
     else:
+        print("Creating new branch '%s'" % branch)
         git.checkout('HEAD', b=branch)
 
 
@@ -101,7 +103,7 @@ def process_event(github_token, github_repository, repo, branch, base):
     pull_request_team_reviewers = os.environ.get('PULL_REQUEST_TEAM_REVIEWERS')
 
     # Push the local changes to the remote branch
-    print("Pushing changes.")
+    print("Pushing changes to 'origin/%s'" % branch)
     push_result = push_changes(repo.git, branch, commit_message)
     print(push_result)
 
@@ -114,50 +116,57 @@ def process_event(github_token, github_repository, repo, branch, base):
             base=base,
             head=branch)
         print("Created pull request #%d (%s => %s)" %
-            (pull_request.number, branch, base))
+              (pull_request.number, branch, base))
     except GithubException as e:
         if e.status == 422:
+            # Format the branch name
+            head_branch = "%s:%s" % (github_repository.split("/")[0], branch)
+            # Get the pull request
             pull_request = github_repo.get_pulls(
-                state='open', 
+                state='open',
                 base=base,
-                head=branch)[1]
+                head=head_branch)[0]
             print("Updated pull request #%d (%s => %s)" %
-                (pull_request.number, branch, base))
+                  (pull_request.number, branch, base))
         else:
             print(str(e))
             sys.exit(1)
 
-    # Set the output variable
+    # Set the output variables
     os.system(
         'echo ::set-env name=PULL_REQUEST_NUMBER::%d' %
         pull_request.number)
+    os.system(
+        'echo ::set-output name=pr_number::%d' %
+        pull_request.number)
 
     # Set labels, assignees and milestone
     if pull_request_labels is not None:
-        print("Applying labels")
+        print("Applying labels '%s'" % pull_request_labels)
         pull_request.as_issue().edit(labels=cs_string_to_list(pull_request_labels))
     if pull_request_assignees is not None:
-        print("Applying assignees")
+        print("Applying assignees '%s'" % pull_request_assignees)
         pull_request.as_issue().edit(assignees=cs_string_to_list(pull_request_assignees))
     if pull_request_milestone is not None:
-        print("Applying milestone")
+        print("Applying milestone '%s'" % pull_request_milestone)
         milestone = github_repo.get_milestone(int(pull_request_milestone))
         pull_request.as_issue().edit(milestone=milestone)
 
     # Set pull request reviewers
     if pull_request_reviewers is not None:
-        print("Requesting reviewers")
+        print("Requesting reviewers '%s'" % pull_request_reviewers)
         try:
             pull_request.create_review_request(
                 reviewers=cs_string_to_list(pull_request_reviewers))
         except GithubException as e:
-            # Likely caused by "Review cannot be requested from pull request author."
+            # Likely caused by "Review cannot be requested from pull request
+            # author."
             if e.status == 422:
                 print("Requesting reviewers failed - %s" % e.data["message"])
 
     # Set pull request team reviewers
     if pull_request_team_reviewers is not None:
-        print("Requesting team reviewers")
+        print("Requesting team reviewers '%s'" % pull_request_team_reviewers)
         pull_request.create_review_request(
             team_reviewers=cs_string_to_list(pull_request_team_reviewers))
 
@@ -192,16 +201,33 @@ base_override = os.environ.get('PULL_REQUEST_BASE')
 # Set the base branch
 if base_override is not None:
     base = base_override
+    print("Overriding the base with branch '%s'" % base)
     checkout_branch(repo.git, True, base)
 elif github_ref.startswith('refs/pull/'):
+    # Check the PR is not raised from a fork of the repository
+    head_repo = "{pull_request[head][repo][full_name]}".format(**event_data)
+    if head_repo != github_repository:
+        print("::warning::Pull request was raised from a fork of the repository. " +
+        "Limitations on forked repositories have been imposed by GitHub Actions. " +
+        "Unable to continue. Exiting.")
+        sys.exit()
     # Switch to the merging branch instead of the merge commit
     base = os.environ['GITHUB_HEAD_REF']
-    repo.git.checkout(base)
-else:
+    print(
+        "Removing the merge commit by switching to the pull request head branch '%s'" %
+        base)
+    checkout_branch(repo.git, True, base)
+elif github_ref.startswith('refs/heads/'):
     base = github_ref[11:]
+    print("Currently checked out base assumed to be branch '%s'" % base)
+else:
+    print(f"::warning::Currently checked out ref '{github_ref}' is not a valid base for a pull request. " +
+    "Unable to continue. Exiting.")
+    sys.exit()
 
 # Skip if the current branch is a PR branch created by this action.
-# This may occur when using a PAT instead of GITHUB_TOKEN.
+# This may occur when using a PAT instead of GITHUB_TOKEN because
+# a PAT allows workflow actions to trigger further events.
 if base.startswith(branch_prefix):
     print("Branch '%s' was created by this action. Skipping." % base)
     sys.exit()
@@ -226,10 +252,15 @@ else:
         branch_suffix)
     sys.exit(1)
 
-# Check if the remote branch exists
-remote_exists = remote_branch_exists(repo, branch)
+# Output head branch
+print("Pull request branch to create/update set to '%s'" % branch)
 
+# Check if the determined head branch exists as a remote
+remote_exists = remote_branch_exists(repo, branch)
 if remote_exists:
+    print(
+        "Pull request branch '%s' already exists as remote branch 'origin/%s'" %
+        (branch, branch))
     if branch_suffix == 'short-commit-hash':
         # A remote branch already exists for the HEAD commit
         print(
@@ -237,9 +268,9 @@ if remote_exists:
             branch)
         sys.exit()
     elif branch_suffix in ['timestamp', 'random']:
-        # Generated branch name clash with an existing branch
+        # Generated branch name collision with an existing branch
         print(
-            "Pull request branch '%s' already exists. Please re-run." %
+            "Pull request branch '%s' collided with a branch of the same name. Please re-run." %
             branch)
         sys.exit(1)
 
@@ -247,8 +278,15 @@ if remote_exists:
 checkout_branch(repo.git, remote_exists, branch)
 
 # Check if there are changes to pull request
+if remote_exists:
+    print("Checking for local working copy changes indicating a " +
+    "diff with existing pull request branch 'origin/%s'" % branch)
+else:
+    print("Checking for local working copy changes indicating a " +
+    "diff with base 'origin/%s'" % base)
+
 if repo.is_dirty() or len(repo.untracked_files) > 0:
-    print("Repository has modified or untracked files.")
+    print("Modified or untracked files detected.")
     process_event(
         github_token,
         github_repository,
@@ -256,4 +294,4 @@ if repo.is_dirty() or len(repo.untracked_files) > 0:
         branch,
         base)
 else:
-    print("Repository has no modified or untracked files. Skipping.")
+    print("No modified or untracked files detected. Skipping.")

dist/src/requirements.txt

@@ -0,0 +1,2 @@
+GitPython==3.0.5
+PyGithub==1.44.1

dist/src/setup-python.js

@@ -0,0 +1,52 @@
+const core = require("@actions/core");
+const tc = require("@actions/tool-cache");
+const path = require("path");
+const semver = require("semver");
+
+/**
+ * Setup for Python from the GitHub Actions tool cache
+ * Converted from https://github.com/actions/setup-python
+ *
+ * @param {string} versionSpec version of Python
+ * @param {string} arch architecture (x64|x32)
+ */
+let setupPython = function(versionSpec, arch) {
+  return new Promise((resolve, reject) => {
+    const IS_WINDOWS = process.platform === "win32";
+
+    // Find the version of Python we want in the tool cache
+    const installDir = tc.find("Python", versionSpec, arch);
+    core.debug(`installDir: ${installDir}`);
+
+    // Set paths
+    core.exportVariable("pythonLocation", installDir);
+    core.addPath(installDir);
+    if (IS_WINDOWS) {
+      core.addPath(path.join(installDir, "Scripts"));
+    } else {
+      core.addPath(path.join(installDir, "bin"));
+    }
+
+    if (IS_WINDOWS) {
+      // Add --user directory
+      // `installDir` from tool cache should look like $AGENT_TOOLSDIRECTORY/Python/<semantic version>/x64/
+      // So if `findLocalTool` succeeded above, we must have a conformant `installDir`
+      const version = path.basename(path.dirname(installDir));
+      const major = semver.major(version);
+      const minor = semver.minor(version);
+
+      const userScriptsDir = path.join(
+        process.env["APPDATA"] || "",
+        "Python",
+        `Python${major}${minor}`,
+        "Scripts"
+      );
+      core.addPath(userScriptsDir);
+    }
+    // On Linux and macOS, pip will create the --user directory and add it to PATH as needed.
+
+    resolve();
+  });
+};
+
+module.exports = setupPython;

examples.md

@@ -3,12 +3,17 @@
 - [Use case: Create a pull request to update X periodically](#use-case-create-a-pull-request-to-update-x-periodically)
   - [Update NPM dependencies](#update-npm-dependencies)
   - [Keep Go up to date](#keep-go-up-to-date)
+  - [Update SwaggerUI for GitHub Pages](#update-swaggerui-for-github-pages)
   - [Spider and download a website](#spider-and-download-a-website)
+- [Use case: Create a pull request to update X by calling the GitHub API](#use-case-create-a-pull-request-to-update-x-by-calling-the-github-api)
+  - [Call the GitHub API from an external service](#call-the-github-api-from-an-external-service)
+  - [Call the GitHub API from another GitHub Actions workflow](#call-the-github-api-from-another-github-actions-workflow)
 - [Use case: Create a pull request to modify/fix pull requests](#use-case-create-a-pull-request-to-modifyfix-pull-requests)
   - [autopep8](#autopep8)
 - [Misc workflow tips](#misc-workflow-tips)
   - [Filtering push events](#filtering-push-events)
   - [Dynamic configuration using variables](#dynamic-configuration-using-variables)
+  - [Debugging GitHub Actions](#debugging-github-actions)
 
 
 ## Use case: Create a pull request to update X periodically
@@ -37,14 +42,14 @@ jobs:
           ncu -u
           npm install
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v1.6.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          COMMIT_MESSAGE: update dependencies
-          PULL_REQUEST_TITLE: Automated Dependency Updates
-          PULL_REQUEST_BODY: This is an auto-generated PR with dependency updates.
-          PULL_REQUEST_BRANCH: dep-updates
-          BRANCH_SUFFIX: none
+        uses: peter-evans/create-pull-request@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: update dependencies
+          title: Automated Dependency Updates
+          body: This is an auto-generated PR with dependency updates.
+          branch: dep-updates
+          branch-suffix: none
 ```
 
 ### Keep Go up to date
@@ -71,18 +76,79 @@ jobs:
       - run: echo "##[set-output name=pr_title;]update to latest Go release ${{ steps.ensure_go.outputs.go_version}}"
         id: pr_title_maker
       - name: Create pull request
-        uses: peter-evans/create-pull-request@v1.6.0
+        uses: peter-evans/create-pull-request@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          title: ${{ steps.pr_title_maker.outputs.pr_title }}
+          body: Auto-generated pull request created by the GitHub Actions [create-pull-request](https://github.com/peter-evans/create-pull-request) and [ensure-latest-go](https://github.com/jmhodges/ensure-latest-go).
+          commit-message: ${{ steps.pr_title_maker.outputs.pr_title }}
+          branch-suffix: none
+          branch: ensure-latest-go/patch-${{ steps.ensure_go.outputs.go_version }}
+```
+
+### Update SwaggerUI for GitHub Pages
+
+When using [GitHub Pages to host Swagger documentation](https://github.com/peter-evans/swagger-github-pages), this workflow updates the repository with the latest distribution of [SwaggerUI](https://github.com/swagger-api/swagger-ui).
+
+You must create a file called `swagger-ui.version` at the root of your repository before running.
+```yml
+name: Update Swagger UI
+on:
+  schedule:
+    - cron:  '0 10 * * *'
+jobs:
+  updateSwagger:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Get Latest Swagger UI Release
+        id: swagger-ui
+        run: |
+          echo ::set-output name=release_tag::$(curl -sL https://api.github.com/repos/swagger-api/swagger-ui/releases/latest | jq -r ".tag_name")
+          echo ::set-output name=current_tag::$(<swagger-ui.version)
+      - name: Update Swagger UI
+        if: steps.swagger-ui.outputs.current_tag != steps.swagger-ui.outputs.release_tag
         env:
-          PULL_REQUEST_TITLE: ${{ steps.pr_title_maker.outputs.pr_title }}
-          PULL_REQUEST_BODY: Auto-generated pull request created by the GitHub Actions [create-pull-request](https://github.com/peter-evans/create-pull-request) and [ensure-latest-go](https://github.com/jmhodges/ensure-latest-go).
-          COMMIT_MESSAGE: ${{ steps.pr_title_maker.outputs.pr_title }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          BRANCH_SUFFIX: none
-          PULL_REQUEST_BRANCH: ensure-latest-go/patch-${{ steps.ensure_go.outputs.go_version }}
+          RELEASE_TAG: ${{ steps.swagger-ui.outputs.release_tag }}
+          SWAGGER_YAML: "swagger.yaml"
+        run: |
+          # Delete the dist directory and index.html
+          rm -fr dist index.html
+          # Download the release
+          curl -sL -o $RELEASE_TAG https://api.github.com/repos/swagger-api/swagger-ui/tarball/$RELEASE_TAG
+          # Extract the dist directory
+          tar -xzf $RELEASE_TAG --strip-components=1 $(tar -tzf $RELEASE_TAG | head -1 | cut -f1 -d"/")/dist
+          rm $RELEASE_TAG
+          # Move index.html to the root
+          mv dist/index.html .
+          # Fix references in index.html
+          sed -i "s|https://petstore.swagger.io/v2/swagger.json|$SWAGGER_YAML|g" index.html
+          sed -i "s|href=\"./|href=\"dist/|g" index.html
+          sed -i "s|src=\"./|src=\"dist/|g" index.html
+          # Update current release
+          echo ${{ steps.swagger-ui.outputs.release_tag }} > swagger-ui.version
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: Update swagger-ui to ${{ steps.swagger-ui.outputs.release_tag }}
+          title: Update SwaggerUI to ${{ steps.swagger-ui.outputs.release_tag }}
+          body: |
+            Updates [swagger-ui][1] to ${{ steps.swagger-ui.outputs.release_tag }}
+
+            Auto-generated by [create-pull-request][2]
+
+            [1]: https://github.com/swagger-api/swagger-ui
+            [2]: https://github.com/peter-evans/create-pull-request
+          labels: dependencies, automated pr
+          branch: swagger-ui-updates
+          branch-suffix: none
 ```
 
 ### Spider and download a website
 
+This workflow spiders a website and downloads the content. Any changes to the website will be raised in a pull request.
+
 ```yml
 name: Download Website
 on:
@@ -106,20 +172,67 @@ jobs:
             --domains quotes.toscrape.com \
             http://quotes.toscrape.com/
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v1.6.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          COMMIT_MESSAGE: update local website copy
-          PULL_REQUEST_TITLE: Automated Updates to Local Website Copy
-          PULL_REQUEST_BODY: This is an auto-generated PR with website updates.
-          PULL_REQUEST_BRANCH: website-updates
-          BRANCH_SUFFIX: none
+        uses: peter-evans/create-pull-request@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: update local website copy
+          title: Automated Updates to Local Website Copy
+          body: This is an auto-generated PR with website updates.
+          branch: website-updates
+          branch-suffix: none
+```
+
+## Use case: Create a pull request to update X by calling the GitHub API
+
+You can use the GitHub API to trigger a webhook event called [`repository_dispatch`](https://help.github.com/en/github/automating-your-workflow-with-github-actions/events-that-trigger-workflows#external-events-repository_dispatch) when you want to trigger a workflow for activity that happens outside of GitHub.
+This pattern will work well for updating any kind of static content from an external source.
+
+You can modify any of the examples in the previous section to work in this fashion.
+
+Set the workflow to execute `on: repository_dispatch`.
+
+```yml
+on:
+  repository_dispatch:
+    types: [create-pull-request]
+```
+
+### Call the GitHub API from an external service
+
+An `on: repository_dispatch` workflow can be triggered by a call to the GitHub API as follows.
+
+- `[username]` is a GitHub username
+- `[token]` is a `repo` scoped [Personal Access Token](https://help.github.com/en/articles/creating-a-personal-access-token-for-the-command-line)
+- `[repository]` is the name of the repository the workflow resides in.
+
+```
+curl -XPOST -u "[username]:[token]" \
+  -H "Accept: application/vnd.github.everest-preview+json" \
+  -H "Content-Type: application/json" \
+  https://api.github.com/repos/[username]/[repository]/dispatches \
+  --data '{"event_type": "create-pull-request"}'
+```
+
+### Call the GitHub API from another GitHub Actions workflow
+
+An `on: repository_dispatch` workflow can be triggered from another workflow with [repository-dispatch](https://github.com/peter-evans/repository-dispatch) action.
+
+```yml
+- name: Repository Dispatch
+  uses: peter-evans/repository-dispatch@v1.0.0
+  with:
+    token: ${{ secrets.REPO_ACCESS_TOKEN }}
+    repository: username/my-repo
+    event-type: create-pull-request
+    client-payload: '{"ref": "${{ github.ref }}", "sha": "${{ github.sha }}"}'
 ```
 
 ## Use case: Create a pull request to modify/fix pull requests
 
 This is a pattern that works well for any automated code linting and fixing. A pull request can be created to fix or modify something during an `on: pull_request` workflow. The pull request containing the fix will be raised with the original pull request as the base. This can be then be merged to update the original pull request and pass any required tests.
 
+Note that due to [limitations on forked repositories](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/authenticating-with-the-github_token#permissions-for-the-github_token) workflows for this use case do not work for pull requests raised from forks.
+
 ### autopep8
 
 The following is an example workflow for a use case where [autopep8 action](https://github.com/peter-evans/autopep8) runs as both a check on pull requests and raises a further pull request to apply code fixes.
@@ -136,7 +249,8 @@ name: autopep8
 on: pull_request
 jobs:
   autopep8:
-    if: startsWith(github.head_ref, 'autopep8-patches') == false
+    # Check if the PR is not raised by this workflow and is not from a fork
+    if: startsWith(github.head_ref, 'autopep8-patches') == false && github.event.pull_request.head.repo.full_name == github.repository
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
@@ -150,15 +264,15 @@ jobs:
         run: echo ::set-output name=branch-name::"autopep8-patches/$GITHUB_HEAD_REF"
       - name: Create Pull Request
         if: steps.autopep8.outputs.exit-code == 2
-        uses: peter-evans/create-pull-request@v1.6.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          COMMIT_MESSAGE: autopep8 action fixes
-          PULL_REQUEST_TITLE: Fixes by autopep8 action
-          PULL_REQUEST_BODY: This is an auto-generated PR with fixes by autopep8.
-          PULL_REQUEST_LABELS: autopep8, automated pr
-          PULL_REQUEST_BRANCH: ${{ steps.vars.outputs.branch-name }}
-          BRANCH_SUFFIX: none
+        uses: peter-evans/create-pull-request@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: autopep8 action fixes
+          title: Fixes by autopep8 action
+          body: This is an auto-generated PR with fixes by autopep8.
+          labels: autopep8, automated pr
+          branch: ${{ steps.vars.outputs.branch-name }}
+          branch-suffix: none
       - name: Fail if autopep8 made changes
         if: steps.autopep8.outputs.exit-code == 2
         run: exit 1
@@ -197,14 +311,14 @@ The recommended method is to use [`set-output`](https://help.github.com/en/githu
           echo ::set-output name=pr_body::"This PR was auto-generated on $(date +%d-%m-%Y) \
             by [create-pull-request](https://github.com/peter-evans/create-pull-request)."
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v1.6.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          PULL_REQUEST_TITLE: ${{ steps.vars.outputs.pr_title }}
-          PULL_REQUEST_BODY: ${{ steps.vars.outputs.pr_body }}
+        uses: peter-evans/create-pull-request@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          title: ${{ steps.vars.outputs.pr_title }}
+          body: ${{ steps.vars.outputs.pr_body }}
 ```
 
-Since the action reads environment variables from the system, it's technically not necessary to explicitly pass them as long as they exist in the environment. So the following method using `set-env` *also* works, but explicitly passing the configuration parameters using the previous method is perferred for its clarity.
+Alternatively, [`set-env`](https://help.github.com/en/github/automating-your-workflow-with-github-actions/development-tools-for-github-actions#set-an-environment-variable-set-env) can be used to create environment variables.
 
 ```yml
       - name: Set environment variables
@@ -213,7 +327,51 @@ Since the action reads environment variables from the system, it's technically n
           echo ::set-env name=PULL_REQUEST_BODY::"This PR was auto-generated on $(date +%d-%m-%Y) \
             by [create-pull-request](https://github.com/peter-evans/create-pull-request)."
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v1.6.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        uses: peter-evans/create-pull-request@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          title: ${{ env.PULL_REQUEST_TITLE }}
+          body: ${{ env.PULL_REQUEST_BODY }}
+```
+
+### Debugging GitHub Actions
+
+#### Runner Diagnostic Logging
+
+[Runner diagnostic logging](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/managing-a-workflow-run#enabling-runner-diagnostic-logging) provides additional log files that contain information about how a runner is executing an action.
+To enable runner diagnostic logging, set the secret `ACTIONS_RUNNER_DEBUG` to `true` in the repository that contains the workflow.
+
+#### Step Debug Logging
+
+[Step debug logging](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/managing-a-workflow-run#enabling-step-debug-logging) increases the verbosity of a job's logs during and after a job's execution.
+To enable step debug logging set the secret `ACTIONS_STEP_DEBUG` to `true` in the repository that contains the workflow.
+
+#### Output Various Contexts
+
+```yml
+    steps:
+      - name: Dump GitHub context
+        env:
+          GITHUB_CONTEXT: ${{ toJson(github) }}
+        run: echo "$GITHUB_CONTEXT"
+      - name: Dump job context
+        env:
+          JOB_CONTEXT: ${{ toJson(job) }}
+        run: echo "$JOB_CONTEXT"
+      - name: Dump steps context
+        env:
+          STEPS_CONTEXT: ${{ toJson(steps) }}
+        run: echo "$STEPS_CONTEXT"
+      - name: Dump runner context
+        env:
+          RUNNER_CONTEXT: ${{ toJson(runner) }}
+        run: echo "$RUNNER_CONTEXT"
+      - name: Dump strategy context
+        env:
+          STRATEGY_CONTEXT: ${{ toJson(strategy) }}
+        run: echo "$STRATEGY_CONTEXT"
+      - name: Dump matrix context
+        env:
+          MATRIX_CONTEXT: ${{ toJson(matrix) }}
+        run: echo "$MATRIX_CONTEXT"
 ```

index.js

@@ -0,0 +1,66 @@
+const { inspect } = require("util");
+const core = require("@actions/core");
+const exec = require("@actions/exec");
+const setupPython = require("./src/setup-python");
+
+async function run() {
+  try {
+    // Allows ncc to find assets to be included in the distribution
+    const src = __dirname + "/src";
+    core.debug(`src: ${src}`);
+
+    // Setup Python from the tool cache
+    setupPython("3.8.0", "x64");
+
+    // Install requirements
+    await exec.exec("pip", [
+      "install",
+      "--requirement",
+      `${src}/requirements.txt`
+    ]);
+
+    // Fetch action inputs
+    const inputs = {
+      token: core.getInput("token"),
+      commitMessage: core.getInput("commit-message"),
+      commitAuthorEmail: core.getInput("author-email"),
+      commitAuthorName: core.getInput("author-name"),
+      title: core.getInput("title"),
+      body: core.getInput("body"),
+      labels: core.getInput("labels"),
+      assignees: core.getInput("assignees"),
+      reviewers: core.getInput("reviewers"),
+      teamReviewers: core.getInput("team-reviewers"),
+      milestone: core.getInput("milestone"),
+      branch: core.getInput("branch"),
+      base: core.getInput("base"),
+      branchSuffix: core.getInput("branch-suffix"),
+      debugEvent: core.getInput("debug-event")
+    };
+    core.debug(`Inputs: ${inspect(inputs)}`);
+
+    // Set environment variables from inputs.
+    if (inputs.token) process.env.GITHUB_TOKEN = inputs.token;
+    if (inputs.commitMessage) process.env.COMMIT_MESSAGE = inputs.commitMessage;
+    if (inputs.commitAuthorEmail) process.env.COMMIT_AUTHOR_EMAIL = inputs.commitAuthorEmail;
+    if (inputs.commitAuthorName) process.env.COMMIT_AUTHOR_NAME = inputs.commitAuthorName;
+    if (inputs.title) process.env.PULL_REQUEST_TITLE = inputs.title;
+    if (inputs.body) process.env.PULL_REQUEST_BODY = inputs.body;
+    if (inputs.labels) process.env.PULL_REQUEST_LABELS = inputs.labels;
+    if (inputs.assignees) process.env.PULL_REQUEST_ASSIGNEES = inputs.assignees;
+    if (inputs.reviewers) process.env.PULL_REQUEST_REVIEWERS = inputs.reviewers;
+    if (inputs.teamReviewers) process.env.PULL_REQUEST_TEAM_REVIEWERS = inputs.teamReviewers;
+    if (inputs.milestone) process.env.PULL_REQUEST_MILESTONE = inputs.milestone;
+    if (inputs.branch) process.env.PULL_REQUEST_BRANCH = inputs.branch;
+    if (inputs.base) process.env.PULL_REQUEST_BASE = inputs.base;
+    if (inputs.branchSuffix) process.env.BRANCH_SUFFIX = inputs.branchSuffix;
+    if (inputs.debugEvent) process.env.DEBUG_EVENT = inputs.debugEvent;
+
+    // Execute python script
+    await exec.exec("python", [`${src}/create-pull-request.py`]);
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}
+
+run();

package-lock.json

@@ -0,0 +1,71 @@
+{
+  "name": "create-pull-request",
+  "version": "1.7.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "@actions/core": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.2.0.tgz",
+      "integrity": "sha512-ZKdyhlSlyz38S6YFfPnyNgCDZuAF2T0Qv5eHflNWytPS8Qjvz39bZFMry9Bb/dpSnqWcNeav5yM2CTYpJeY+Dw=="
+    },
+    "@actions/exec": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@actions/exec/-/exec-1.0.1.tgz",
+      "integrity": "sha512-nvFkxwiicvpzNiCBF4wFBDfnBvi7xp/as7LE1hBxBxKG2L29+gkIPBiLKMVORL+Hg3JNf07AKRfl0V5djoypjQ=="
+    },
+    "@actions/io": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@actions/io/-/io-1.0.1.tgz",
+      "integrity": "sha512-rhq+tfZukbtaus7xyUtwKfuiCRXd1hWSfmJNEpFgBQJ4woqPEpsBw04awicjwz9tyG2/MVhAEMfVn664Cri5zA=="
+    },
+    "@actions/tool-cache": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@actions/tool-cache/-/tool-cache-1.1.2.tgz",
+      "integrity": "sha512-IJczPaZr02ECa3Lgws/TJEVco9tjOujiQSZbO3dHuXXjhd5vrUtfOgGwhmz3/f97L910OraPZ8SknofUk6RvOQ==",
+      "requires": {
+        "@actions/core": "^1.1.0",
+        "@actions/exec": "^1.0.1",
+        "@actions/io": "^1.0.1",
+        "semver": "^6.1.0",
+        "typed-rest-client": "^1.4.0",
+        "uuid": "^3.3.2"
+      }
+    },
+    "@zeit/ncc": {
+      "version": "0.20.5",
+      "resolved": "https://registry.npmjs.org/@zeit/ncc/-/ncc-0.20.5.tgz",
+      "integrity": "sha512-XU6uzwvv95DqxciQx+aOLhbyBx/13ky+RK1y88Age9Du3BlA4mMPCy13BGjayOrrumOzlq1XV3SD/BWiZENXlw==",
+      "dev": true
+    },
+    "semver": {
+      "version": "6.3.0",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
+      "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw=="
+    },
+    "tunnel": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/tunnel/-/tunnel-0.0.4.tgz",
+      "integrity": "sha1-LTeFoVjBdMmhbcLARuxfxfF0IhM="
+    },
+    "typed-rest-client": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/typed-rest-client/-/typed-rest-client-1.5.0.tgz",
+      "integrity": "sha512-DVZRlmsfnTjp6ZJaatcdyvvwYwbWvR4YDNFDqb+qdTxpvaVP99YCpBkA8rxsLtAPjBVoDe4fNsnMIdZTiPuKWg==",
+      "requires": {
+        "tunnel": "0.0.4",
+        "underscore": "1.8.3"
+      }
+    },
+    "underscore": {
+      "version": "1.8.3",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
+      "integrity": "sha1-Tz+1OxBuYJf8+ctBCfKl6b36UCI="
+    },
+    "uuid": {
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.3.tgz",
+      "integrity": "sha512-pW0No1RGHgzlpHJO1nsVrHKpOEIxkGg1xB+v0ZmdNH5OAeAwzAVrCnI2/6Mtx+Uys6iaylxa+D3g4j63IKKjSQ=="
+    }
+  }
+}

package.json

@@ -0,0 +1,28 @@
+{
+  "name": "create-pull-request",
+  "version": "1.7.4",
+  "description": "Creates a pull request for changes to your repository in the actions workspace",
+  "main": "index.js",
+  "scripts": {
+    "build": "ncc build index.js -o dist"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/peter-evans/create-pull-request.git"
+  },
+  "keywords": [],
+  "author": "Peter Evans",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/peter-evans/create-pull-request/issues"
+  },
+  "homepage": "https://github.com/peter-evans/create-pull-request",
+  "dependencies": {
+    "@actions/core": "^1.1.1",
+    "@actions/exec": "^1.0.1",
+    "@actions/tool-cache": "^1.1.2"
+  },
+  "devDependencies": {
+    "@zeit/ncc": "0.20.5"
+  }
+}

requirements.txt

@@ -1,2 +0,0 @@
-GitPython==3.0.4
-PyGithub==1.44

src/create-pull-request.py

@@ -0,0 +1,297 @@
+#!/usr/bin/env python3
+''' Create Pull Request '''
+import json
+import os
+import random
+import string
+import sys
+import time
+from git import Repo
+from github import Github, GithubException
+
+
+def get_github_event(github_event_path):
+    with open(github_event_path) as f:
+        github_event = json.load(f)
+    if bool(os.environ.get('DEBUG_EVENT')):
+        print(os.environ['GITHUB_EVENT_NAME'])
+        print(json.dumps(github_event, sort_keys=True, indent=2))
+    return github_event
+
+
+def get_head_short_sha1(repo):
+    return repo.git.rev_parse('--short', 'HEAD')
+
+
+def get_random_suffix(size=7, chars=string.ascii_lowercase + string.digits):
+    return ''.join(random.choice(chars) for _ in range(size))
+
+
+def remote_branch_exists(repo, branch):
+    for ref in repo.remotes.origin.refs:
+        if ref.name == ("origin/%s" % branch):
+            return True
+    return False
+
+
+def get_author_default(event_name, event_data):
+    if event_name == "push":
+        email = "{head_commit[author][email]}".format(**event_data)
+        name = "{head_commit[author][name]}".format(**event_data)
+    else:
+        email = os.environ['GITHUB_ACTOR'] + '@users.noreply.github.com'
+        name = os.environ['GITHUB_ACTOR']
+    return email, name
+
+
+def set_git_config(git, email, name):
+    print("Configuring git user as '%s <%s>'" % (name, email))
+    git.config('--global', 'user.email', '"%s"' % email)
+    git.config('--global', 'user.name', '"%s"' % name)
+
+
+def set_git_remote_url(git, token, github_repository):
+    git.remote(
+        'set-url', 'origin', "https://x-access-token:%s@github.com/%s" %
+        (token, github_repository))
+
+
+def checkout_branch(git, remote_exists, branch):
+    if remote_exists:
+        print("Checking out branch '%s'" % branch)
+        git.stash('--include-untracked')
+        git.checkout(branch)
+        try:
+            git.stash('pop')
+        except BaseException:
+            git.checkout('--theirs', '.')
+            git.reset()
+    else:
+        print("Creating new branch '%s'" % branch)
+        git.checkout('HEAD', b=branch)
+
+
+def push_changes(git, branch, commit_message):
+    git.add('-A')
+    git.commit(m=commit_message)
+    return git.push('-f', '--set-upstream', 'origin', branch)
+
+
+def cs_string_to_list(str):
+    # Split the comma separated string into a list
+    l = [i.strip() for i in str.split(',')]
+    # Remove empty strings
+    return list(filter(None, l))
+
+
+def process_event(github_token, github_repository, repo, branch, base):
+    # Fetch optional environment variables with default values
+    commit_message = os.getenv(
+        'COMMIT_MESSAGE',
+        "Auto-committed changes by create-pull-request action")
+    title = os.getenv(
+        'PULL_REQUEST_TITLE',
+        "Auto-generated by create-pull-request action")
+    body = os.getenv(
+        'PULL_REQUEST_BODY', "Auto-generated pull request by "
+        "[create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub Action")
+    # Fetch optional environment variables with no default values
+    pull_request_labels = os.environ.get('PULL_REQUEST_LABELS')
+    pull_request_assignees = os.environ.get('PULL_REQUEST_ASSIGNEES')
+    pull_request_milestone = os.environ.get('PULL_REQUEST_MILESTONE')
+    pull_request_reviewers = os.environ.get('PULL_REQUEST_REVIEWERS')
+    pull_request_team_reviewers = os.environ.get('PULL_REQUEST_TEAM_REVIEWERS')
+
+    # Push the local changes to the remote branch
+    print("Pushing changes to 'origin/%s'" % branch)
+    push_result = push_changes(repo.git, branch, commit_message)
+    print(push_result)
+
+    # Create the pull request
+    github_repo = Github(github_token).get_repo(github_repository)
+    try:
+        pull_request = github_repo.create_pull(
+            title=title,
+            body=body,
+            base=base,
+            head=branch)
+        print("Created pull request #%d (%s => %s)" %
+              (pull_request.number, branch, base))
+    except GithubException as e:
+        if e.status == 422:
+            # Format the branch name
+            head_branch = "%s:%s" % (github_repository.split("/")[0], branch)
+            # Get the pull request
+            pull_request = github_repo.get_pulls(
+                state='open',
+                base=base,
+                head=head_branch)[0]
+            print("Updated pull request #%d (%s => %s)" %
+                  (pull_request.number, branch, base))
+        else:
+            print(str(e))
+            sys.exit(1)
+
+    # Set the output variables
+    os.system(
+        'echo ::set-env name=PULL_REQUEST_NUMBER::%d' %
+        pull_request.number)
+    os.system(
+        'echo ::set-output name=pr_number::%d' %
+        pull_request.number)
+
+    # Set labels, assignees and milestone
+    if pull_request_labels is not None:
+        print("Applying labels '%s'" % pull_request_labels)
+        pull_request.as_issue().edit(labels=cs_string_to_list(pull_request_labels))
+    if pull_request_assignees is not None:
+        print("Applying assignees '%s'" % pull_request_assignees)
+        pull_request.as_issue().edit(assignees=cs_string_to_list(pull_request_assignees))
+    if pull_request_milestone is not None:
+        print("Applying milestone '%s'" % pull_request_milestone)
+        milestone = github_repo.get_milestone(int(pull_request_milestone))
+        pull_request.as_issue().edit(milestone=milestone)
+
+    # Set pull request reviewers
+    if pull_request_reviewers is not None:
+        print("Requesting reviewers '%s'" % pull_request_reviewers)
+        try:
+            pull_request.create_review_request(
+                reviewers=cs_string_to_list(pull_request_reviewers))
+        except GithubException as e:
+            # Likely caused by "Review cannot be requested from pull request
+            # author."
+            if e.status == 422:
+                print("Requesting reviewers failed - %s" % e.data["message"])
+
+    # Set pull request team reviewers
+    if pull_request_team_reviewers is not None:
+        print("Requesting team reviewers '%s'" % pull_request_team_reviewers)
+        pull_request.create_review_request(
+            team_reviewers=cs_string_to_list(pull_request_team_reviewers))
+
+
+# Fetch environment variables
+github_token = os.environ['GITHUB_TOKEN']
+github_repository = os.environ['GITHUB_REPOSITORY']
+github_ref = os.environ['GITHUB_REF']
+event_name = os.environ['GITHUB_EVENT_NAME']
+# Get the JSON event data
+event_data = get_github_event(os.environ['GITHUB_EVENT_PATH'])
+
+# Set the repo to the working directory
+repo = Repo(os.getcwd())
+# Get the default for author email and name
+author_email, author_name = get_author_default(event_name, event_data)
+# Set commit author overrides
+author_email = os.getenv('COMMIT_AUTHOR_EMAIL', author_email)
+author_name = os.getenv('COMMIT_AUTHOR_NAME', author_name)
+# Set git configuration
+set_git_config(repo.git, author_email, author_name)
+# Update URL for the 'origin' remote
+set_git_remote_url(repo.git, github_token, github_repository)
+
+# Fetch/Set the branch name
+branch_prefix = os.getenv(
+    'PULL_REQUEST_BRANCH',
+    'create-pull-request/patch')
+# Fetch an optional base branch override
+base_override = os.environ.get('PULL_REQUEST_BASE')
+
+# Set the base branch
+if base_override is not None:
+    base = base_override
+    print("Overriding the base with branch '%s'" % base)
+    checkout_branch(repo.git, True, base)
+elif github_ref.startswith('refs/pull/'):
+    # Check the PR is not raised from a fork of the repository
+    head_repo = "{pull_request[head][repo][full_name]}".format(**event_data)
+    if head_repo != github_repository:
+        print("::warning::Pull request was raised from a fork of the repository. " +
+        "Limitations on forked repositories have been imposed by GitHub Actions. " +
+        "Unable to continue. Exiting.")
+        sys.exit()
+    # Switch to the merging branch instead of the merge commit
+    base = os.environ['GITHUB_HEAD_REF']
+    print(
+        "Removing the merge commit by switching to the pull request head branch '%s'" %
+        base)
+    checkout_branch(repo.git, True, base)
+elif github_ref.startswith('refs/heads/'):
+    base = github_ref[11:]
+    print("Currently checked out base assumed to be branch '%s'" % base)
+else:
+    print(f"::warning::Currently checked out ref '{github_ref}' is not a valid base for a pull request. " +
+    "Unable to continue. Exiting.")
+    sys.exit()
+
+# Skip if the current branch is a PR branch created by this action.
+# This may occur when using a PAT instead of GITHUB_TOKEN because
+# a PAT allows workflow actions to trigger further events.
+if base.startswith(branch_prefix):
+    print("Branch '%s' was created by this action. Skipping." % base)
+    sys.exit()
+
+# Fetch an optional environment variable to determine the branch suffix
+branch_suffix = os.getenv('BRANCH_SUFFIX', 'short-commit-hash')
+if branch_suffix == "short-commit-hash":
+    # Suffix with the short SHA1 hash
+    branch = "%s-%s" % (branch_prefix, get_head_short_sha1(repo))
+elif branch_suffix == "timestamp":
+    # Suffix with the current timestamp
+    branch = "%s-%s" % (branch_prefix, int(time.time()))
+elif branch_suffix == "random":
+    # Suffix with the current timestamp
+    branch = "%s-%s" % (branch_prefix, get_random_suffix())
+elif branch_suffix == "none":
+    # Fixed branch name
+    branch = branch_prefix
+else:
+    print(
+        "Branch suffix '%s' is not a valid value." %
+        branch_suffix)
+    sys.exit(1)
+
+# Output head branch
+print("Pull request branch to create/update set to '%s'" % branch)
+
+# Check if the determined head branch exists as a remote
+remote_exists = remote_branch_exists(repo, branch)
+if remote_exists:
+    print(
+        "Pull request branch '%s' already exists as remote branch 'origin/%s'" %
+        (branch, branch))
+    if branch_suffix == 'short-commit-hash':
+        # A remote branch already exists for the HEAD commit
+        print(
+            "Pull request branch '%s' already exists for this commit. Skipping." %
+            branch)
+        sys.exit()
+    elif branch_suffix in ['timestamp', 'random']:
+        # Generated branch name collision with an existing branch
+        print(
+            "Pull request branch '%s' collided with a branch of the same name. Please re-run." %
+            branch)
+        sys.exit(1)
+
+# Checkout branch
+checkout_branch(repo.git, remote_exists, branch)
+
+# Check if there are changes to pull request
+if remote_exists:
+    print("Checking for local working copy changes indicating a " +
+    "diff with existing pull request branch 'origin/%s'" % branch)
+else:
+    print("Checking for local working copy changes indicating a " +
+    "diff with base 'origin/%s'" % base)
+
+if repo.is_dirty() or len(repo.untracked_files) > 0:
+    print("Modified or untracked files detected.")
+    process_event(
+        github_token,
+        github_repository,
+        repo,
+        branch,
+        base)
+else:
+    print("No modified or untracked files detected. Skipping.")

src/requirements.txt

@@ -0,0 +1,2 @@
+GitPython==3.0.5
+PyGithub==1.44.1

src/setup-python.js

@@ -0,0 +1,52 @@
+const core = require("@actions/core");
+const tc = require("@actions/tool-cache");
+const path = require("path");
+const semver = require("semver");
+
+/**
+ * Setup for Python from the GitHub Actions tool cache
+ * Converted from https://github.com/actions/setup-python
+ *
+ * @param {string} versionSpec version of Python
+ * @param {string} arch architecture (x64|x32)
+ */
+let setupPython = function(versionSpec, arch) {
+  return new Promise((resolve, reject) => {
+    const IS_WINDOWS = process.platform === "win32";
+
+    // Find the version of Python we want in the tool cache
+    const installDir = tc.find("Python", versionSpec, arch);
+    core.debug(`installDir: ${installDir}`);
+
+    // Set paths
+    core.exportVariable("pythonLocation", installDir);
+    core.addPath(installDir);
+    if (IS_WINDOWS) {
+      core.addPath(path.join(installDir, "Scripts"));
+    } else {
+      core.addPath(path.join(installDir, "bin"));
+    }
+
+    if (IS_WINDOWS) {
+      // Add --user directory
+      // `installDir` from tool cache should look like $AGENT_TOOLSDIRECTORY/Python/<semantic version>/x64/
+      // So if `findLocalTool` succeeded above, we must have a conformant `installDir`
+      const version = path.basename(path.dirname(installDir));
+      const major = semver.major(version);
+      const minor = semver.minor(version);
+
+      const userScriptsDir = path.join(
+        process.env["APPDATA"] || "",
+        "Python",
+        `Python${major}${minor}`,
+        "Scripts"
+      );
+      core.addPath(userScriptsDir);
+    }
+    // On Linux and macOS, pip will create the --user directory and add it to PATH as needed.
+
+    resolve();
+  });
+};
+
+module.exports = setupPython;