create-issue: add action

Related: Homebrew/homebrew-core#190657 (comment)

create-issue/README.md

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+# Create Issue
+
+A very simple action to create an issue in a repository.
+
+Intended for internal use only.
+
+## Usage
+
+```yaml
+- uses: Homebrew/actions/create-issue@master
+  with:
+    token: ${{ github.token }} # defaults to this
+    repository: ${{ github.repository }} # defaults to this
+    title: Issue title
+    body: Issue body
+    labels: label1,label2
+    assignees: user1,user2
+```

create-issue/action.yml

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+name: Create issue
+description: Create an issue in a repository
+author: ZhongRuoyu
+branding:
+  icon: alert-circle
+  color: blue
+inputs:
+  token:
+    description: GitHub token
+    required: false
+    default: ${{github.token}}
+  repository:
+    description: Repository to send the issue to
+    required: false
+    default: ${{github.repository}}
+  title:
+    description: The title of the issue
+    required: true
+  body:
+    description: The body of the issue
+    required: true
+  labels:
+    description: Comma-separated list of labels to add to the issue
+    required: false
+  assignees:
+    description: Comma-separated list of users to assign the issue to
+    required: false
+runs:
+  using: node20
+  main: main.mjs

create-issue/main.mjs

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+import core from "@actions/core";
+import github from "@actions/github";
+
+async function main() {
+  try {
+    const token = core.getInput("token", { required: true });
+    const [owner, repo] = core.getInput("repository", { required: true }).split("/");
+
+    const title = core.getInput("title", { required: true });
+    const body = core.getInput("body", { required: true });
+
+    const labelsInput = core.getInput("labels");
+    const labels = labelsInput ? labelsInput.split(",") : [];
+    const assigneesInput = core.getInput("assignees");
+    const assignees = assigneesInput ? assigneesInput.split(",") : [];
+
+    const client = github.getOctokit(token);
+
+    const response = await client.rest.issues.create({
+      owner,
+      repo,
+      title,
+      body,
+      labels,
+      assignees,
+    });
+    const issueNumber = response.data.number;
+    const issueNodeId = response.data.node_id;
+    const issueUrl = response.data.html_url;
+
+    core.info(`Issue created: ${issueUrl}`);
+
+    core.setOutput("number", issueNumber);
+    core.setOutput("node_id", issueNodeId);
+  } catch (error) {
+    core.setFailed(error);
+  }
+}
+
+await main();

create-issue/main.test.mjs

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+import util from "node:util";
+
+test("create-issue", async () => {
+  const mockPool = githubMockPool();
+
+  const token = "fake-token";
+  const title = "Issue title";
+  const body = "Issue body.\nLorem ipsum dolor sit amet.";
+  const labels = "label1,label2";
+  const assignees = "assignee1,assignee2";
+
+  const issueNumber = 12345;
+
+  mockInput("token", token);
+  mockInput("repository", GITHUB_REPOSITORY);
+  mockInput("title", title);
+  mockInput("body", body);
+  mockInput("labels", labels);
+  mockInput("assignees", assignees);
+
+  mockPool.intercept({
+    method: "POST",
+    path: `/repos/${GITHUB_REPOSITORY}/issues`,
+    headers: {
+      Authorization: `token ${token}`,
+    },
+    body: (htmlBody) => util.isDeepStrictEqual(JSON.parse(htmlBody), {
+      title,
+      body,
+      labels: labels.split(","),
+      assignees: assignees.split(","),
+    }),
+  }).defaultReplyHeaders({
+    "Content-Type": "application/json",
+  }).reply(200, {
+    number: issueNumber
+  });
+
+  await loadMain();
+});