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index.js
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index.js
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const core = require("@actions/core");
const github = require("@actions/github");
const [owner, repo] = process.env.GITHUB_REPOSITORY.split("/");
async function run() {
try {
const fromBranch = core.getInput("FROM_BRANCH", { required: true });
const toBranch = core.getInput("TO_BRANCH", { required: true });
const githubToken = core.getInput("GITHUB_TOKEN", { required: true });
const pullRequestTitle = core.getInput("PULL_REQUEST_TITLE");
const pullRequestBody = core.getInput("PULL_REQUEST_BODY");
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"));
console.log(
`Should a pull request to ${toBranch} from ${fromBranch} be created?`
);
const octokit = new github.getOctokit(githubToken);
console.debug(
`List all the PRs in ${owner}/${repo}`
);
const { data: currentPulls } = await octokit.rest.pulls.list({
owner,
repo,
});
console.debug(
`Check if there's already a sync PR between ${toBranch} and ${fromBranch}`
);
const currentPull = currentPulls.find((pull) => {
return pull.head.ref === fromBranch && pull.base.ref === toBranch;
});
if (!currentPull) {
let shouldCreatePullRequest = true;
if (contentComparison) {
console.debug(
`Check if there's a difference between ${toBranch} and ${fromBranch}`
);
shouldCreatePullRequest = await hasContentDifference(
octokit,
fromBranch,
toBranch
);
}
if (shouldCreatePullRequest) {
console.debug(
`Creating the PR...`
);
const { data: pullRequest } = await octokit.rest.pulls.create({
owner,
repo,
head: fromBranch,
base: toBranch,
title: pullRequestTitle
? pullRequestTitle
: `sync: ${fromBranch} to ${toBranch}`,
body: pullRequestBody
? pullRequestBody
: `sync-branches: New code has just landed in ${fromBranch}, so let's bring ${toBranch} up to speed!`,
draft: pullRequestIsDraft,
});
if (reviewers.length > 0 || team_reviewers.length > 0) {
octokit.rest.pulls.requestReviewers({
owner,
repo,
pull_number: pullRequest.number,
reviewers,
team_reviewers,
});
}
if (labels.length > 0) {
octokit.rest.issues.addLabels({
owner,
repo,
issue_number: pullRequest.number,
labels,
});
}
console.log(
`Pull request (${pullRequest.number}) successful! You can view it here: ${pullRequest.url}`
);
core.setOutput("PULL_REQUEST_URL", pullRequest.url.toString());
core.setOutput("PULL_REQUEST_NUMBER", pullRequest.number.toString());
} else {
console.log(
`There is no content difference between ${fromBranch} and ${toBranch}.`
);
}
} else {
console.log(
`There is already a pull request (${currentPull.number}) to ${toBranch} from ${fromBranch}.`,
`You can view it here: ${currentPull.url}`
);
core.setOutput("PULL_REQUEST_URL", currentPull.url.toString());
core.setOutput("PULL_REQUEST_NUMBER", currentPull.number.toString());
}
} catch (error) {
core.setFailed(error.message);
}
}
async function hasContentDifference(octokit, fromBranch, toBranch) {
const { data: response } = await octokit.rest.repos.compareCommits({
owner,
repo,
base: toBranch,
head: fromBranch,
page: 1,
per_page: 1,
});
return response.files.length > 0;
}
run();