generate-changelog.php

#!/usr/bin/env php
<?php declare(strict_types=1);

use Httpful\Request;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

(function () {
	require_once __DIR__ . '/../vendor/autoload.php';

	$command = new class() extends Symfony\Component\Console\Command\Command {

		protected function configure()
		{
			$this->setName('run');
			$this->addArgument('fromCommit', InputArgument::REQUIRED);
			$this->addArgument('toCommit', InputArgument::REQUIRED);
		}

		protected function execute(InputInterface $input, OutputInterface $output)
		{
			$commitLines = $this->exec(['git', 'log', sprintf('%s..%s', $input->getArgument('fromCommit'), $input->getArgument('toCommit')), '--reverse', '--pretty=%H %s']);
			$commits = array_map(function (string $line): array {
				[$hash, $message] = explode(' ', $line, 2);

				return [
					'hash' => $hash,
					'message' => $message
				];
			}, explode("\n", $commitLines));

			$i = 0;

			foreach ($commits as $commit) {
				$searchPullRequestsResponse = Request::get(sprintf('https://api.github.com/search/issues?q=repo:phpstan/phpstan-src+%s', $commit['hash']))
					->sendsAndExpectsType('application/json')
					->basicAuth('ondrejmirtes', getenv('GITHUB_TOKEN'))
					->send();
				if ($searchPullRequestsResponse->code !== 200) {
					$output->writeln(var_export($searchPullRequestsResponse->body, true));
					throw new \InvalidArgumentException((string) $searchPullRequestsResponse->code);
				}
				$searchPullRequestsResponse = $searchPullRequestsResponse->body;

				$searchIssuesResponse = Request::get(sprintf('https://api.github.com/search/issues?q=repo:phpstan/phpstan+%s', $commit['hash']))
					->sendsAndExpectsType('application/json')
					->basicAuth('ondrejmirtes', getenv('GITHUB_TOKEN'))
					->send();
				if ($searchIssuesResponse->code !== 200) {
					$output->writeln(var_export($searchIssuesResponse->body, true));
					throw new \InvalidArgumentException((string) $searchIssuesResponse->code);
				}
				$searchIssuesResponse = $searchIssuesResponse->body;
				$items = array_merge($searchPullRequestsResponse->items, $searchIssuesResponse->items);
				$parenthesis = 'https://github.com/phpstan/phpstan-src/commit/' . $commit['hash'];
				$thanks = null;
				$issuesToReference = [];
				foreach ($items as $responseItem) {
					if (isset($responseItem->pull_request)) {
						$parenthesis = sprintf('[#%d](%s)', $responseItem->number, 'https://github.com/phpstan/phpstan-src/pull/' . $responseItem->number);
						$thanks = $responseItem->user->login;
					} else {
						$issuesToReference[] = sprintf('#%d', $responseItem->number);
					}
				}

				$output->writeln(sprintf('* %s (%s)%s%s', $commit['message'], $parenthesis, count($issuesToReference) > 0 ? ', ' . implode(', ', $issuesToReference) : '', $thanks !== null ? sprintf(', thanks @%s!', $thanks) : ''));

				if ($i > 0 && $i % 8 === 0) {
					sleep(60);
				}

				$i++;
			}

			return 0;
		}

		/**
		 * @param string[] $commandParts
		 * @return string
		 */
		private function exec(array $commandParts): string
		{
			$command = implode(' ', array_map(function (string $part): string {
				return escapeshellarg($part);
			}, $commandParts));

			exec($command, $outputLines, $statusCode);
			$output = implode("\n", $outputLines);
			if ($statusCode !== 0) {
				throw new \InvalidArgumentException(sprintf('Command %s failed: %s', $command, $output));
			}

			return $output;
		}

	};

	$application = new \Symfony\Component\Console\Application();
	$application->add($command);
	$application->setDefaultCommand('run', true);
	$application->run();

})();