Project base

.gitignore

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+node_modules

Readme.md

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+## PR Approver
+
+Github action to auto-approve PRs based on labels.
+
+## How to use
+
+- Create a github actions workflow in your project
+- Define a job that runs on `ubuntu-latest`
+- Use this repo's latest release as a reference
+- Add the variables `token`, `label-list` and optionally `label-exclusion-list`
+
+Example:
+```
+# <project>/.github/workflows/<action_name.yml>
+
+name: <name>
+on:
+  pull_request:
+    types: [opened]
+jobs:
+  <job_name>:
+    runs-on: ubuntu-latest
+    steps:
+      - name: <name>
+        uses: nrccua/pr_approver@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          label-list: sync
+          label-exclusion-list: conflict,error
+```

action.yml

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+name: PR Approver
+description: Github action to auto-approve PRs based on labels
+author: NRCCUA
+inputs:
+  token:
+    description: "Token for the repository. Can be passed in using {{ secrets.GITHUB_TOKEN }}"
+    required: true
+  label-list:
+    description: "Comma-separated list of labels that enable a PR approval. Example: test,demo,prep"
+    required: true
+  label-exclusion-list:
+    description: "Comma-separated list of labels that block a PR approval. Example: conflicts,error,temp"
+    required: false
+runs:
+  using: node12
+  main: dist/index.js

index.js

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+const github = require('@actions/github');
+const core = require('@actions/core');
+
+const main = async () => {
+  const token = core.getInput('token');
+  const approvalLabelsString = core.getInput('label-list');
+  const exclusionLabelsString = core.getInput('label-exclusion-list');
+  const octokit = github.getOctokit(token);
+
+  const { pull_request } = github.context.payload;
+  const { number, labels } = pull_request;
+
+  const prLabels = labels.map(label => label.name);
+  const approvalLabels = approvalLabelsString.split(',');
+  const exclusionLabels = (exclusionLabelsString && exclusionLabelsString.split(',')) || [];
+
+  if (
+    exclusionLabels.filter(exclusionLabel => prLabels.includes(exclusionLabel)).length === 0
+    && approvalLabels.filter(approvalLabel => prLabels.includes(approvalLabel)).length > 0
+  ) {
+    await octokit.rest.pulls.createReview({
+      ...github.context.repo,
+      pull_number: number,
+      event: 'APPROVE'
+    });
+  }
+};
+
+main().catch(err => core.setFailed(err.message));

package.json

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+{
+  "name": "pr-approver",
+  "version": "1.0.0",
+  "description": "Github action to auto-approve PRs based on labels",
+  "main": "dist/index.js",
+  "scripts": {
+    "clean": "rm -rf ./dist && rm -rf ./node_modules",
+    "build": "npm run clean && npm ci && ncc build index.js -o dist"
+  },
+  "author": "NRCCUA",
+  "contributors": [
+    "Thiago L. Lima <[email protected]>",
+    "Fabricio Montagnani <[email protected]>"
+  ],
+  "dependencies": {
+    "@actions/core": "1.5.0",
+    "@actions/github": "5.0.0"
+  },
+  "devDependencies": {
+    "@vercel/ncc": "0.31.1"
+  }
+}