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

use rabe\Util\Settings;
use rabe\Util\SettingsWriter;

use pointybeard\Helpers\Cli\Input;
use pointybeard\Helpers\Cli\Input\AbstractInputType;
use pointybeard\Helpers\Cli\Input\AbstractInputHandler;
use pointybeard\Helpers\Cli\Colour\Colour;
use pointybeard\Helpers\Functions\Cli;

$autoloadFiles = [
	__DIR__ . '/../vendor/autoload.php',
	__DIR__ . '/../../../autoload.php'
];

foreach ($autoloadFiles as $autoloadFile) {
	if (file_exists($autoloadFile)) {
		require_once $autoloadFile;
		break;
	}
}

$version = '0.1 beta';

$actions = [ 'show', 'write', 'help' ];
$settings = ['key' => '', 'value' => ''];

/* Flags and Argument configuration {{{*/
$collection = (new Input\InputCollection())

	->add( Input\InputTypeFactory::build('LongOption')->name('help')->short('h') // {{{
		->flags(AbstractInputType::FLAG_OPTIONAL)
		->description('Display help text')
	) // }}}

	->add( Input\InputTypeFactory::build('LongOption')->name('in')->short('i') // {{{
		->flags(AbstractInputType::FLAG_OPTIONAL | Input\AbstractInputType::FLAG_VALUE_REQUIRED)
		->description('Path to a json data file to to read')
	) // }}}

	->add( Input\InputTypeFactory::build('LongOption')->name('out')->short('o') // {{{
		->flags(AbstractInputType::FLAG_OPTIONAL | Input\AbstractInputType::FLAG_VALUE_REQUIRED)
		->description('Path to a json file to to write to')
	) // }}}

	->add( Input\InputTypeFactory::build('LongOption')->name('appPath')->short('a') // {{{
		->flags(AbstractInputType::FLAG_OPTIONAL | Input\AbstractInputType::FLAG_VALUE_REQUIRED)
		->description('Path where the config/ directory for the conf files is located, defaults to the working dir')
	) // }}}

	->add( Input\InputTypeFactory::build('LongOption')->name('pkgPath')->short('p') // {{{
		->flags(AbstractInputType::FLAG_OPTIONAL | Input\AbstractInputType::FLAG_VALUE_REQUIRED)
		->description('Path where the config/ directory of the package conf files is located, defaults to the working dir')
	) // }}}

	->add( Input\InputTypeFactory::build('Argument')->name('action') // {{{
		->flags(AbstractInputType::FLAG_REQUIRED)
		->description(
			'one of:'
			."\n\t".'show	reads configurations'
			."\n\t".'write	writes configurations'
		)
		->validator(new Input\Validator(
			function (AbstractInputType $input, AbstractInputHandler $context) use ($actions)
			{
				$action = $context->find('action');
				if ( !in_array($action, $actions) ) {
					throw new \Exception("'$action' not found");
				}
				return $action;
			}
		))
	) // }}}

	->add( Input\InputTypeFactory::build('Argument')->name('prefix') // {{{
		->flags(AbstractInputType::FLAG_REQUIRED)
		->description(
			'the settings prefix'
		)
		/* ->validator(new Input\Validator(
			function (AbstractInputType $input, AbstractInputHandler $context) use ($actions)
			{
				$action = $context->find('action');
				if ( !in_array($action, $actions) {
					throw new \Exception("'$action' not found");
				}
				return $action;
			}
		))
		*/
	) // }}}

	->add( Input\InputTypeFactory::build('Argument')->name('setting') // {{{
		->flags(AbstractInputType::FLAG_OPTIONAL)
		->description(
			'the settings you want to work on. With action "write" you can pass the value to set as JSON after an equal sign.'
		)
		->validator(new Input\Validator(
			function (AbstractInputType $input, AbstractInputHandler $context)
			{
				$setting = $context->find('setting');
				$action = $context->find('action');
				
				$setting = explode('=', $setting);
				$settings['key'] = $setting[0];
				if ($action === 'write')
				{
					$value = $setting[1];
					if (! (isset($value) || $context->find('data'))) {
						throw new \Exception('You need a value to write');
					}
					$specialValues = [ 'true', 'false', 'null' ];
					if (! (in_array($value, $specialValues) || is_numeric($value) || strpbrk($value, '[{":') !== false )) {
						$value = "\"$value\"";
					}
					try {
						$settings['value'] = json_decode($value, true, 512, JSON_THROW_ON_ERROR);
					} catch (\JsonException $ex) {
						throw new \Exception( sprintf(
							'The value does not appear to be a valid JSON string. Returned: %s: %s',
							$ex->getCode(), $ex->getMessage()
						));
					}
				}
				return $settings;
			}
		))
	) // }}}
; // }}}	

/* Parse Input, usage, unkown flags, Help {{{*/
$usage = Cli\manpage( basename(__FILE__), $version,
	'read write settings',
	$collection, Colour::FG_GREEN, Colour::FG_WHITE,
	[
		'Examples' =>
			 'cfg show VeruA db:host'.PHP_EOL.
			 'cfg write VeruA \'db:host="newHost"\''.PHP_EOL
	]
).PHP_EOL;

// Get the supplied input. Passing the collection will make the handler bind values
// and validate the input according to our collection
try {
	$argv = Input\InputHandlerFactory::build('Argv', $collection);
} catch (\Exception $ex) {
	echo $usage;

	if ($argv[1] == '-h' || $argv[1] == '--help' || $argv[1] == 'help') {
		exit(0);
	}
	echo $ex->getMessage().PHP_EOL;
	exit(1);
}

// show help
if ($argv->find( 'help' ) || $argv->find('action') == 'help')
{
	echo $usage;
	exit(0);
}
//}}}


$prefix = $argv->find('prefix');
/* 
echo $argv->find('action').PHP_EOL;
echo ($prefix).PHP_EOL;
echo $argv->find('setting')['key'].PHP_EOL;
echo $argv->find('setting')['value'].PHP_EOL;
 */
// var_dump($cfg);
$appPath = $argv->find('appPath');
if (!$appPath) $appPath = getcwd().'/';

/* $it = new RecursiveDirectoryIterator($appPath);

foreach(new RecursiveIteratorIterator($it) as $file)
{
	$configDir = $file->getPath();
	if ($file->isDir() && $file->getFilename() == '.' && basename($configDir) == 'config') {
		echo "found config dir: $configDir\n";
	}
}
 */
$cfg = (new Settings())->appPath($appPath)->prefix($prefix);
if ($pkgPath = $argv->find('pkgPath')) $cfg->pkgPath($pkgPath);

if (is_readable($cfg->buildFileName('default'))) {
	$cfg->load();
}
elseif (is_readable($cfgFile = $cfg->buildFileName())) {
	$cfg->load(require($cfgFile));
}
//var_dump($cfg);

$result = $cfg;
$settings = $argv->find('setting') ?? $settings;

if ($settings['key'])
{
	foreach (explode(':', $settings['key']) as $setting)
	{
		try {
			$result = $result->{$setting};
		}
		catch (\OutOfRangeException $e) {
			echo $e->getMessage().PHP_EOL;
			exit(1);
		}
	}
}
else $result = $cfg;

if ($result instanceof Settings) $result = $result->toArray();

switch ($argv->find('action'))
{
case 'show':
	echo json_encode($result, JSON_PRETTY_PRINT).PHP_EOL;
	break;
	
case 'write':
	$path = ($settings['key'] !== '') ? explode(':', $settings['key']) : [];
	var_dump($path);
	
	$setting2write = $settings['value'];
	
	while ( ! empty($path))
	{
		$setting2write = [array_pop($path) => $setting2write];
	}
	if (is_readable($file = $cfg->buildFileName()))
	{
		$setting2write = array_replace_recursive(require($file), $setting2write);
		copy($file, "$file.bak");
	}
	$writeCfg = $cfg->create($setting2write);
//	var_dump($writeCfg->toArray());
	try {
		(new SettingsWriter($writeCfg))->write();
		echo "Written modified settings to: $file".PHP_EOL;
	}
	catch (\Exception $e) {
		echo $e->getMessage().PHP_EOL;
	}

	break;
}


/* jEdit buffer local properties {{{
 * :folding=explicit:collapseFolds=1:
 }}}*/