#!/usr/bin/env php
<?php

use Amp\Http\Client\HttpClientBuilder;
use Amp\Loop;
use Auryn\Injector;
use Kelunik\AcmeClient\AcmeFactory;
use Kelunik\AcmeClient\Commands\Command;
use League\CLImate\CLImate;
use function Kelunik\AcmeClient\getBinary;
use function Kelunik\AcmeClient\suggestCommand;

$logo = <<<LOGO
    ____ __________ ___  ___
   / __ `/ ___/ __ `__ \/ _ \
  / /_/ / /__/ / / / / /  __/
  \__,_/\___/_/ /_/ /_/\___/

LOGO;

if (!file_exists(__DIR__ . '/../vendor/autoload.php')) {
    echo $logo;
    echo <<<HELP

  You need to install the composer dependencies.

    composer install --no-dev


HELP;
    exit(-1);
}

if (!function_exists('openssl_pkey_get_private')) {
    echo $logo;
    echo <<<HELP

  You need to enable OpenSSL in your php.ini


HELP;
    exit(-2);
}

require __DIR__ . '/../vendor/autoload.php';

$commands = [
    'auto' => 'Setup, issue and renew based on a single configuration file.',
    'setup' => 'Setup and register account.',
    'issue' => 'Issue a new certificate.',
    'check' => 'Check if a certificate is still valid long enough.',
    'revoke' => 'Revoke a certificate.',
    'status' => 'Show status about local certificates.',
    'version' => 'Print version information.',
    'help' => 'Print this help information.',
];

$binary = getBinary();

$help = implode(PHP_EOL, array_map(function ($command) use ($commands) {
    $help = "  <green>{$command}</green>\n";
    $help .= "  └─ {$commands[$command]}\n";
    return $help;
}, array_keys($commands)));

$help = <<<EOT

<yellow>Usage:</yellow>
  bin/acme [command] [--args]

<yellow>Options:</yellow>
  <green>-h, --help</green>
  └─ Print this help information.

<yellow>Available commands:</yellow>
{$help}
Get more help by appending <yellow>--help</yellow> to specific commands.

EOT;

$climate = new CLImate;

if (!in_array(PHP_SAPI, ['cli', 'phpdbg'], true)) {
    $climate->error('Please run this script on the command line!');
    exit(1);
}

if (PHP_VERSION_ID < 70400) {
    $climate->yellow("You're using an older version of PHP which is no longer supported by this client. Have a look at https://php.net/supported-versions.php and upgrade at least to PHP 7.4!");
    $climate->br(2);
}

if (count($argv) === 1 || in_array($argv[1], ['-h', 'help', '--help'], true)) {
    $climate->out($logo . $help);
    exit(0);
}

if (!array_key_exists($argv[1], $commands)) {
    $climate->error("Unknown command '{$argv[1]}'. Use --help for a list of available commands.");

    $suggestion = suggestCommand($argv[1], array_keys($commands));

    if ($suggestion) {
        $climate->br()->out("  Did you mean '$suggestion'?");
    }

    $climate->br();

    exit(1);
}

/** @var string|Command $class */
$class = "Kelunik\\AcmeClient\\Commands\\" . ucfirst($argv[1]);
$definition = $class::getDefinition();

try {
    $args = $argv;
    unset($args[1]);

    $climate->arguments->add($definition);

    if (count($argv) === 3 && in_array($argv[2], ['-h', '--help'], true)) {
        $climate->usage(["{$binary} {$argv[1]}"]);
        $climate->br();

        exit(0);
    }

    $climate->arguments->parse(array_values($args));
} catch (Exception $e) {
    $climate->usage(["{$binary} {$argv[1]}"]);
    $climate->br();

    $climate->error($e->getMessage());
    $climate->br();

    exit(1);
}

$injector = new Injector;
$injector->share($climate);
$injector->share(new AcmeFactory);
$injector->share(HttpClientBuilder::buildDefault());

$command = $injector->make($class);
$exitCode = 1;

Loop::run(function () use ($command, $climate, &$exitCode) {
    $handler = function ($e) use ($climate) {
        $error = (string) $e;
        $lines = explode("\n", $error);
        $lines = array_filter($lines, function ($line) {
            return $line !== '' && $line[0] !== '#' && $line !== 'Stack trace:';
        });

        foreach ($lines as $line) {
            $climate->error($line)->br();
        }

        exit(1);
    };

    try {
        $exitCode = yield $command->execute($climate->arguments);

        if ($exitCode === null) {
            $exitCode = 0;
        }
    } catch (Throwable $e) {
        $handler($e);
    }

    Loop::stop();
});

exit($exitCode);