<?php

const BRANCHES = [
    ['name' => 'master', 'ref' => 'master', 'version' => [8, 6]],
    ['name' => 'PHP-8.5', 'ref' => 'PHP-8.5', 'version' => [8, 5]],
    ['name' => 'PHP-8.4', 'ref' => 'PHP-8.4', 'version' => [8, 4]],
    ['name' => 'PHP-8.3', 'ref' => 'PHP-8.3', 'version' => [8, 3]],
    ['name' => 'PHP-8.2', 'ref' => 'PHP-8.2', 'version' => [8, 2]],
];

function get_branch_commit_cache_file_path(): string {
    return dirname(__DIR__) . '/branch-commit-cache.json';
}

function get_branches() {
    $branch_commit_cache_file = get_branch_commit_cache_file_path();
    $branch_commit_map = [];
    if (file_exists($branch_commit_cache_file)) {
        $branch_commit_map = json_decode(file_get_contents($branch_commit_cache_file), JSON_THROW_ON_ERROR);
    }

    $changed_branches = [];
    foreach (BRANCHES as $branch) {
        $previous_commit_hash = $branch_commit_map[$branch['ref']] ?? null;
        $current_commit_hash = trim(shell_exec('git rev-parse origin/' . $branch['ref']));

        if ($previous_commit_hash !== $current_commit_hash) {
            $changed_branches[] = $branch;
        }

        $branch_commit_map[$branch['ref']] = $current_commit_hash;
    }

    file_put_contents($branch_commit_cache_file, json_encode($branch_commit_map));

    return $changed_branches;
}

function get_current_version(): array {
    $file = dirname(__DIR__) . '/main/php_version.h';
    $content = file_get_contents($file);
    preg_match('(^#define PHP_MAJOR_VERSION (?<num>\d+)$)m', $content, $matches);
    $major = (int) $matches['num'];
    preg_match('(^#define PHP_MINOR_VERSION (?<num>\d+)$)m', $content, $matches);
    $minor = (int) $matches['num'];
    return [$major, $minor];
}

function select_jobs($repository, $trigger, $nightly, $labels, $php_version, $ref, $all_variations) {
    $no_jobs = in_array('CI: No jobs', $labels, true);
    $all_jobs = in_array('CI: All jobs', $labels, true) || $nightly;
    $test_alpine = in_array('CI: Alpine', $labels, true);
    $test_benchmarking = in_array('CI: Benchmarking', $labels, true);
    $test_community = in_array('CI: Community', $labels, true);
    $test_coverage = in_array('CI: Coverage', $labels, true);
    $test_freebsd = in_array('CI: FreeBSD', $labels, true);
    $test_libmysqlclient = in_array('CI: libmysqlclient', $labels, true);
    $test_linux_ppc64 = in_array('CI: Linux PPC64', $labels, true);
    $test_linux_x32 = in_array('CI: Linux X32', $labels, true);
    $test_linux_x64 = in_array('CI: Linux X64', $labels, true);
    $test_macos = in_array('CI: macOS', $labels, true);
    $test_msan = in_array('CI: MSAN', $labels, true);
    $test_opcache_variation = in_array('CI: Opcache Variation', $labels, true);
    $test_pecl = in_array('CI: PECL', $labels, true);
    $test_solaris = in_array('CI: Solaris', $labels, true);
    $test_windows = in_array('CI: Windows', $labels, true);

    $jobs = [];
    if (version_compare($php_version, '8.4', '>=') && ($all_jobs || !$no_jobs || $test_alpine)) {
        $jobs['ALPINE'] = true;
    }
    if (version_compare($php_version, '8.4', '>=')
        && !$nightly
        && ($all_jobs || !$no_jobs || $test_benchmarking)
        // push trigger is restricted to official repository.
        && ($repository === 'php/php-src' || $trigger === 'pull_request')) {
        $jobs['BENCHMARKING']['config']['integrated_opcache'] = version_compare($php_version, '8.5', '>=');
    }
    if ($all_jobs || $test_community) {
        $jobs['COMMUNITY']['matrix'] = version_compare($php_version, '8.4', '>=')
            ? ['type' => ['asan', 'verify_type_inference']]
            : ['type' => ['asan']];
        $jobs['COMMUNITY']['config']['symfony_version'] = match (true) {
            version_compare($php_version, '8.3', '<=') => '7.4',
            default => '',
        };
        $jobs['COMMUNITY']['config']['laravel_version'] = match (true) {
            version_compare($php_version, '8.2', '<=') => '12.x',
            default => '',
        };
    }
    if (($all_jobs && $ref === 'master') || $test_coverage) {
        $jobs['COVERAGE'] = true;
    }
    if ($all_jobs || $test_libmysqlclient) {
        $jobs['LIBMYSQLCLIENT'] = true;
    }
    if (version_compare($php_version, '8.4', '>=') && ($all_jobs || $test_linux_ppc64)) {
        $jobs['LINUX_PPC64'] = true;
    }
    if ($all_jobs || !$no_jobs || $test_linux_x64) {
        $jobs['LINUX_X64']['matrix'] = $all_variations
            ? [
                'name' => [''],
                'asan' => [false],
                'debug' => [true, false],
                'repeat' => [false],
                'variation' => [false],
                'zts' => [true, false],
                'include' => [
                    ['name' => '_ASAN', 'asan' => true, 'debug' => true, 'repeat' => false, 'variation' => false, 'zts' => true],
                    ['name' => '_REPEAT', 'asan' => false, 'debug' => true, 'repeat' => true, 'variation' => false, 'zts' => false],
                    ['name' => '_VARIATION', 'asan' => false, 'debug' => true, 'repeat' => false, 'variation' => true, 'zts' => true],
                ],
            ]
            : ['include' => [
                ['name' => '', 'asan' => false, 'debug' => false, 'repeat' => false, 'variation' => false, 'zts' => false],
                ['name' => '_ASAN', 'asan' => true, 'debug' => true, 'repeat' => false, 'variation' => false, 'zts' => true],
            ]];
        $jobs['LINUX_X64']['config']['variation_enable_zend_max_execution_timers'] = version_compare($php_version, '8.3', '>=');
    }
    if ($all_jobs || !$no_jobs || $test_linux_x32) {
        $jobs['LINUX_X32']['matrix'] = $all_variations
            ? ['debug' => [true, false], 'zts' => [true, false]]
            : ['debug' => [true], 'zts' => [true]];
    }
    if ($all_jobs || !$no_jobs || $test_macos) {
        $test_arm = version_compare($php_version, '8.4', '>=');
        $jobs['MACOS']['matrix'] = $all_variations
            ? ['arch' => $test_arm ? ['X64', 'ARM64'] : ['X64'], 'debug' => [true, false], 'zts' => [true, false]]
            : ['include' => [['arch' => $test_arm ? 'ARM64' : 'X64', 'debug' => true, 'zts' => false]]];
        $jobs['MACOS']['config']['arm64_version'] = version_compare($php_version, '8.4', '>=') ? '15' : '14';
    }
    if ($all_jobs || $test_msan) {
        $jobs['MSAN'] = true;
    }
    if ($all_jobs || $test_opcache_variation) {
        $jobs['OPCACHE_VARIATION'] = true;
    }
    if (($all_jobs && $ref === 'master') || $test_pecl) {
        $jobs['PECL'] = true;
    }
    if (version_compare($php_version, '8.6', '>=') && ($all_jobs || $test_solaris)) {
        $jobs['SOLARIS'] = true;
    }
    if ($all_jobs || !$no_jobs || $test_windows) {
        $jobs['WINDOWS']['matrix'] = $all_variations
            ? ['include' => [
                ['asan' => true, 'opcache' => true, 'x64' => true, 'zts' => true],
                ['asan' => false, 'opcache' => false, 'x64' => false, 'zts' => false],
            ]]
            : ['include' => [['asan' => false, 'opcache' => true, 'x64' => true, 'zts' => true]]];
        $jobs['WINDOWS']['config'] = version_compare($php_version, '8.4', '>=')
            ? ['vs_crt_version' => 'vs17']
            : ['vs_crt_version' => 'vs16'];
    }
    if ($all_jobs || !$no_jobs || $test_freebsd) {
        $jobs['FREEBSD']['matrix'] = $all_variations && version_compare($php_version, '8.3', '>=')
            ? ['zts' => [true, false]]
            : ['zts' => [false]];
    }
    return $jobs;
}

$trigger = $argv[1] ?? 'schedule';
$attempt = (int) ($argv[2] ?? 1);
$sunday = date('w', time()) === '0';
$discard_cache = $sunday
    || ($trigger === 'schedule' && $attempt !== 1)
    || $trigger === 'workflow_dispatch';
if ($discard_cache) {
    @unlink(get_branch_commit_cache_file_path());
}
$branch = $argv[3] ?? 'master';
$nightly = $trigger === 'schedule' || $trigger === 'workflow_dispatch';
$branches = $nightly && $branch === 'master'
    ? get_branches()
    : [['name' => 'Suite', 'ref' => $branch, 'version' => get_current_version()]];

$labels = json_decode($argv[4] ?? '[]', true) ?? [];
$labels = array_column($labels, 'name');
$all_variations = $nightly || in_array('CI: All variations', $labels, true);

$repository = $argv[5] ?? null;

foreach ($branches as &$branch) {
    $php_version = $branch['version'][0] . '.' . $branch['version'][1];
    $branch['jobs'] = select_jobs($repository, $trigger, $nightly, $labels, $php_version, $branch['ref'], $all_variations);
    $branch['config']['ubuntu_version'] = version_compare($php_version, '8.5', '>=') ? '24.04' : '22.04';
}

echo "All variations:";
echo json_encode($all_variations, JSON_UNESCAPED_SLASHES|JSON_PRETTY_PRINT);
echo "\n\nBranches:\n";
echo json_encode($branches, JSON_UNESCAPED_SLASHES|JSON_PRETTY_PRINT);
echo "\n";

if (false !== ($github_output = getenv('GITHUB_OUTPUT'))) {
    $f = fopen($github_output, 'a');
    fwrite($f, 'branches=' . json_encode($branches, JSON_UNESCAPED_SLASHES) . "\n");
    fwrite($f, 'all_variations=' . json_encode($all_variations, JSON_UNESCAPED_SLASHES) . "\n");
    fclose($f);
}
