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index.js
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index.js
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// External Dependencies
const fs = require('fs');
const github = require('@actions/github');
const core = require('@actions/core');
const context = github.context;
const repo = context.payload.repository;
const owner = repo.owner;
const FILES = new Set();
const FILES_ADDED = new Set();
const FILES_MODIFIED = new Set();
const FILES_REMOVED = new Set();
const FILES_RENAMED = new Set();
const gh = github.getOctokit(core.getInput('token'));
const args = { owner: owner.name || owner.login, repo: repo.name };
function debug(msg, obj = null) {
core.debug(formatLogMessage(msg, obj));
}
function fetchCommitData(commit) {
args.ref = commit.id || commit.sha;
debug('Calling gh.repos.getCommit() with args', args)
return gh.rest.repos.getCommit(args);
}
function formatLogMessage(msg, obj = null) {
return obj ? `${msg}: ${toJSON(obj)}` : msg;
}
async function getCommits() {
let commits;
debug('Getting commits...');
switch(context.eventName) {
case 'push':
commits = context.payload.commits;
break;
case 'pull_request_target':
case 'pull_request':
const url = context.payload.pull_request.commits_url;
commits = await gh.paginate(`GET ${url}`, args);
break;
default:
info('You are using this action on an event for which it has not been tested. Only the "push", "pull_request" and "pull_request_target" events are officially supported.');
commits = [];
break;
}
return commits;
}
function info(msg, obj = null) {
core.info(formatLogMessage(msg, obj));
}
function isAdded(file) {
return 'added' === file.status;
}
function isModified(file) {
return 'modified' === file.status;
}
function isRemoved(file) {
return 'removed' === file.status;
}
function isRenamed(file) {
return 'renamed' === file.status;
}
async function outputResults() {
debug('FILES', Array.from(FILES.values()));
core.setOutput('all', toJSON(Array.from(FILES.values()), 0));
core.setOutput('added', toJSON(Array.from(FILES_ADDED.values()), 0));
core.setOutput('modified', toJSON(Array.from(FILES_MODIFIED.values()), 0));
core.setOutput('removed', toJSON(Array.from(FILES_REMOVED.values()), 0));
core.setOutput('renamed', toJSON(Array.from(FILES_RENAMED.values()), 0));
fs.writeFileSync(`${process.env.HOME}/files.json`, toJSON(Array.from(FILES.values())), 'utf-8');
fs.writeFileSync(`${process.env.HOME}/files_added.json`, toJSON(Array.from(FILES_ADDED.values())), 'utf-8');
fs.writeFileSync(`${process.env.HOME}/files_modified.json`, toJSON(Array.from(FILES_MODIFIED.values())), 'utf-8');
fs.writeFileSync(`${process.env.HOME}/files_removed.json`, toJSON(Array.from(FILES_REMOVED.values())), 'utf-8');
fs.writeFileSync(`${process.env.HOME}/files_renamed.json`, toJSON(Array.from(FILES_RENAMED.values())), 'utf-8');
// Backwards Compatability
core.setOutput('deleted', toJSON(Array.from(FILES_REMOVED.values()), 0));
fs.writeFileSync(`${process.env.HOME}/files_deleted.json`, toJSON(Array.from(FILES_REMOVED.values())), 'utf-8');
}
async function processCommitData(result) {
debug('Processing API Response', result);
if (! result || ! result.data) {
return;
}
result.data.files.forEach(file => {
(isAdded(file) || isModified(file) || isRenamed(file)) && FILES.add(file.filename);
if (isAdded(file)) {
FILES_ADDED.add(file.filename);
FILES_REMOVED.delete(file.filename);
return; // continue
}
if (isRemoved(file)) {
if (! FILES_ADDED.has(file.filename)) {
FILES_REMOVED.add(file.filename);
}
FILES_ADDED.delete(file.filename);
FILES_MODIFIED.delete(file.filename);
return; // continue;
}
if (isModified(file)) {
FILES_MODIFIED.add(file.filename);
return; // continue;
}
if (isRenamed(file)) {
processRenamedFile(file.previous_filename, file.filename);
}
});
}
function processRenamedFile(prev_file, new_file) {
FILES.delete(prev_file) && FILES.add(new_file);
FILES_ADDED.delete(prev_file) && FILES_ADDED.add(new_file);
FILES_MODIFIED.delete(prev_file) && FILES_MODIFIED.add(new_file);
FILES_RENAMED.add(new_file);
}
function toJSON(value, pretty=true) {
return pretty
? JSON.stringify(value, null, 4)
: JSON.stringify(value);
}
debug('context', context);
debug('args', args);
getCommits().then(commits => {
// Exclude merge commits
commits = commits.filter(c => ! c.parents || 1 === c.parents.length);
if ('push' === context.eventName) {
commits = commits.filter(c => c.distinct);
}
debug('All Commits', commits);
Promise.all(commits.map(fetchCommitData))
.then(data => Promise.all(data.map(processCommitData)))
.then(outputResults)
.then(() => process.exitCode = 0)
.catch(err => core.error(err) && (process.exitCode = 1));
});