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

/*
 * This scripts is used to update the PHPdoc annotations for redis commands in the Connection.php class.
 */

use yii\helpers\Inflector;
use yii\helpers\Console;

foreach([
    __DIR__ . '/../vendor/yiisoft/yii2/Yii.php',
    __DIR__ . '/../../../framework/Yii.php',
] as $yii) {
    if (is_file($yii)) {
        include($yii);
        break;
    }
}

$commandsHtml = file_get_contents('https://redis.io/commands');
//echo $commandsHtml;

preg_match_all('~<li.+? data-name=\'([\w ]+)\'>\s*<a href=\'([\w /-]+)\'>.*?<span class=\'args\'>(.*?)</span>.*?<span class=\'summary\'>(.*?)</span>~si', $commandsHtml, $matches);
//print_r($matches);

$commands = [];
$n = count($matches[0]);
for($i = 0; $i < $n; $i++) {
    $name = trim($matches[1][$i]);
    $url = 'https://redis.io' . $matches[2][$i];
    $args = array_map('trim', explode("\n", trim($matches[3][$i])));
    $descr = trim($matches[4][$i]);
    $commands[$name] = [
        'url' => $url,
        'args' => $args,
        'descr' => $descr,
    ];
}
// print_r($commands);

$commandArray = [];
foreach($commands as $name => $info) {
    $name = strtoupper($name);
    $commandArray[] = "        '$name', // " . $info['descr'];
}
print_r($commandArray);

// command args that are hard to transform into php automatically
$specialArgs = [
    'bitfield' => '$key, ...$operations',
    'clientKill' => '...$filters',
    'clientReply' => '$option',
    'clusterFailover' => '$option = null',
    'clusterReset' => '$resetType = "SOFT"',
    'clusterSetslot' => '$slot, $type, $nodeid = null',
    'geoadd' => '$key, $longitude, $latitude, $member, ...$more',
    'georadius' => '$key, $longitude, $latitude, $radius, $metric, ...$options',
    'georadiusbymember' => '$key, $member, $radius, $metric, ...$options',
    'hmset' => '$key, $field, $value, ...$more',
    'linsert' => '$key, $where, $pivot, $value',
    'migrate' => '$host, $port, $key, $destinationDb, $timeout, ...$options',
    'mset' => '...$keyValuePairs',
    'msetnx' => '...$keyValuePairs',
    'scriptDebug' => '$option',
    'set' => '$key, $value, ...$options',
    'shutdown' => '$saveOption = null',
    'sort' => '$key, ...$options',
    'zadd' => '$key, ...$options',
    'zinterstore' => '$destination, $numkeys, $key, ...$options',
    'zunionstore' => '$destination, $numkeys, $key, ...$options',
];

$methods = [];
foreach($commands as $name => $info) {
    $name = lcfirst(Inflector::camelize($name));
    if (isset($specialArgs[$name])) {
        $arglist = $specialArgs[$name];
    } else {
        $arglist = implode(', ', array_map(function($arg) {
            if (empty($arg)) {
                return '';
            }
            if (strpos($arg, '[') === 0 && strpos($arg, '...') === false) {
                // optional arguments
                $arg = substr($arg, 1, -1);
                return implode(', ', array_map(function($a) {return '$'.$a.' = null'; }, explode(' ', $arg)));
            } elseif (preg_match('~^(\[?)([\w-]+) \[\2 ...\](\]?)~', $arg, $m)) {
                return '...$'. lcfirst(Inflector::camelize($m[2])) . 's';
            }
            return '$' . lcfirst(Inflector::camelize($arg));
        }, $info['args']));
    }
    $methods[] = " * @method mixed $name($arglist) " . $info['descr'] . '. <' . $info['url'] . '>';
}
print_r($methods);

if (!Console::confirm('Update redis\Connection class now?')) {
    Console::stderr("aborting...\n");
    exit(1);
}
Console::stderr('Updating class docs...');

$file = __DIR__.'/../src/Connection.php';
$content = file_get_contents($file);
if ($content === false) {
    Console::stderr("failed to read file $file !\n");
    exit(1);
}
$newContent = $content;

$newContent =  preg_replace('~( \* @method.*?\n)+~si', implode("\n", $methods) . "\n", $newContent);
$newContent =  preg_replace('~\$redisCommands = \[.+?\];~si', "\$redisCommands = [\n" . implode("\n", $commandArray) . "\n    ];", $newContent);

if ($content === $newContent) {
    Console::stderr("no changes!\n");
} else {
    file_put_contents($file, $newContent);
    Console::stderr("done.\n");
}