<?php

if (count($argv) < 4) {
    echo 'Use of this Command:' . PHP_EOL
        . 'createPipeline Handling_Namespace Pipeline_Name Step_1_Name Step_2_Name' . PHP_EOL;
    die;
}

$projectSourceDirectory = 'src/';
$projectNamespace = 'MyTube';

$pipelineNamespace  = $argv[1];
$pipelineName       = $argv[2];
$stepNames          = array_slice($argv, 3);

# Pipeline
$pipelineClassName = $pipelineName . 'Pipeline';
$pipelineVariableName = lcfirst($pipelineClassName);
$pipelineDirectoryPath = $projectSourceDirectory . 'HandlingDomain/' . $pipelineNamespace . '/';
$pipelineFilePath = $pipelineDirectoryPath . 'src/Pipeline/' . $pipelineName . '/' . $pipelineClassName . '.php';
$pipelineFullNamespace = $projectNamespace . '\\Handling\\' . $pipelineNamespace . '\\Pipeline\\' . $pipelineName;
$pipelineUsingNamespace = $pipelineFullNamespace . '\\' . $pipelineClassName;

# Payload
$payloadClassName = $pipelineName . 'Payload';
$payloadVariableName = lcfirst($payloadClassName);
$payloadFilePath = $projectSourceDirectory . 'HandlingDomain/' . $pipelineNamespace . '/src/Pipeline/' . $pipelineName . '/' . $payloadClassName . '.php';
$payloadFullNamespace = $projectNamespace . '\\Handling\\' . $pipelineNamespace . '\\Pipeline\\' . $pipelineName;
$payloadUsingNamespace = $payloadFullNamespace . '\\' . $payloadClassName;

# Step
$stepsFilePath = $projectSourceDirectory . 'HandlingDomain/' . $pipelineNamespace . '/src/Pipeline/' . $pipelineName . '/Step/';
$stepsFullNamespace = $projectNamespace . '\\Handling\\' . $pipelineNamespace . '\\Pipeline\\' . $pipelineName . '\\Step';

$steps = [];
foreach ($stepNames as $stepName) {
    $stepClassName = $stepName . 'Step';
    $steps[] = [
        'stepClassName' => $stepClassName,
        'stepVariableName' => lcfirst($stepClassName),
        'stepFilePath' => $stepsFilePath . $stepClassName . '.php',
        'stepUsingNamespace' => 'use ' . $payloadFullNamespace . '\\Step\\' . $stepClassName,
    ];
}


########## WRITE FILES ###############
function writeToFile($path, $content) {
    echo 'Writing contents to file ' . $path . PHP_EOL;

    $directory = pathinfo($path, PATHINFO_DIRNAME);
    if (!is_dir($directory)) {
        mkdir($directory, 0755, true);
    }

    file_put_contents($path, $content);
}

$createNamespaceFiles = !file_exists($pipelineDirectoryPath);

$stepsUsingNamespaces = [];
$stepsDeclarations = [];
$stepsAutoWirings = [];
$stepsReferences = [];

foreach ($steps as $step) {
    $stepClassName = $step['stepClassName'];
    $stepVariableName = $step['stepVariableName'];
    $stepFilePath = $step['stepFilePath'];
    $stepUsingNamespace = $step['stepUsingNamespace'];

    $stepsUsingNamespaces[] = $stepUsingNamespace . ';';
    $stepsDeclarations[] = 'private readonly ' . $stepClassName . ' $' . $stepVariableName . ',';
    $stepsAutoWirings[] = $stepClassName . '::class => AutoWiringFactory::class,';
    $stepsReferences[] = '$this->' . $stepVariableName . ',';

    $stepFileContent = "<?php

declare(strict_types=1);

namespace {$stepsFullNamespace};

use {$payloadUsingNamespace};

use teewurst\\Pipeline\\PipelineInterface;
use teewurst\\Pipeline\\TaskInterface;

class {$stepClassName} implements TaskInterface
{
    public function __construct(
        #TODO
    ) {
    }
    
    public function __invoke(\$payload, PipelineInterface \$pipeline): void
    {
        /** @var {$payloadClassName} \${$payloadVariableName} */
        \${$payloadVariableName} = \$payload;
        
        \$pipeline->next()(\$payload, \$pipeline);
    }
}
";
    writeToFile($stepFilePath, $stepFileContent);
}

$stepsUsingNamespace = implode(PHP_EOL, $stepsUsingNamespaces);
$stepsDeclaration = implode(PHP_EOL . '        ', $stepsDeclarations);
$stepsAutoWiring = implode(PHP_EOL . '        ', $stepsAutoWirings);
$stepsReference = implode(PHP_EOL . '            ', $stepsReferences);


$pipelineFileContent = "<?php

declare(strict_types=1);

namespace {$pipelineFullNamespace};

{$stepsUsingNamespace}
use teewurst\\Pipeline\\Pipeline;

class {$pipelineClassName} extends Pipeline
{
    public function __construct(
        {$stepsDeclaration}    
    ) {
        parent::__construct([
            {$stepsReference}
        ]);
    }
}
";
writeToFile($pipelineFilePath, $pipelineFileContent);

$payloadFileContent = "<?php

declare(strict_types=1);

namespace {$payloadFullNamespace};

class {$payloadClassName}
{
    #TODO
}
";
writeToFile($payloadFilePath, $payloadFileContent);


if ($createNamespaceFiles) {
    $serviceManagerFileContent = "<?php

declare(strict_types=1);

use {$pipelineUsingNamespace};
{$stepsUsingNamespace}
use Reinfi\\DependencyInjection\\Factory\\AutoWiringFactory;
use Reinfi\\DependencyInjection\\Factory\\InjectionFactory;

return [
    'factories' => [
        /// Pipeline
        // {$pipelineName}
        {$pipelineClassName}::class => AutoWiringFactory::class,
        {$stepsAutoWiring}
    ],
];
";
    $serviceManagerFilePath = $pipelineDirectoryPath . 'config/service_manager.php';
    writeToFile($serviceManagerFilePath, $serviceManagerFileContent);

    $configProviderFileContent = "<?php

declare(strict_types=1);

namespace MyTube\\Handling\\{$pipelineNamespace};

class ConfigProvider
{
    public function __invoke(): array
    {
        return [
            'dependencies' => require  __DIR__ . './../config/service_manager.php',
        ];
    }
}
";
    $configProviderFilePath = $pipelineDirectoryPath . 'src/ConfigProvider.php';
    writeToFile($configProviderFilePath, $configProviderFileContent);

}