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SchemaStitcher.php
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<?php
namespace Nuwave\Lighthouse\Schema\Source;
use Illuminate\Support\Str;
use Illuminate\Contracts\Filesystem\FileNotFoundException;
class SchemaStitcher implements SchemaSourceProvider
{
/**
* @var string
*/
protected $rootSchemaPath;
/**
* SchemaStitcher constructor.
*
* @param string $rootSchemaPath
* @return void
*/
public function __construct(string $rootSchemaPath)
{
$this->rootSchemaPath = $rootSchemaPath;
}
/**
* Set schema root path.
*
* @param string $path
* @return $this
*/
public function setRootPath(string $path): self
{
$this->rootSchemaPath = $path;
return $this;
}
/**
* Stitch together schema documents and return the result as a string.
*
* @return string
*/
public function getSchemaString(): string
{
return self::gatherSchemaImportsRecursively($this->rootSchemaPath);
}
/**
* Get the schema, starting from a root schema, following the imports recursively.
*
* @param string $path
* @return string
*/
protected static function gatherSchemaImportsRecursively(string $path): string
{
if (! file_exists($path)) {
self::throwFileNotFoundException($path);
}
return collect(file($path))
->map(function (string $line) use ($path) {
if (! Str::startsWith(trim($line), '#import ')) {
return rtrim($line, PHP_EOL).PHP_EOL;
}
$importFileName = trim(Str::after($line, '#import '));
$importFilePath = dirname($path).'/'.$importFileName;
if (! Str::contains($importFileName, '*')) {
$realPath = realpath($importFilePath);
if (! $realPath) {
self::throwFileNotFoundException($importFilePath);
}
return self::gatherSchemaImportsRecursively($realPath);
}
$importFilePaths = glob($importFilePath);
return collect($importFilePaths)
->map(function ($file) {
return self::gatherSchemaImportsRecursively($file);
})
->implode('');
})
->implode('');
}
/**
* @param string $path
* @return void
*
* @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
*/
protected static function throwFileNotFoundException(string $path): void
{
throw new FileNotFoundException(
"Failed to find a GraphQL schema file at {$path}. If you just installed Lighthouse, run php artisan vendor:publish --provider=\"Nuwave\Lighthouse\Providers\LighthouseServiceProvider\" --tag=schema"
);
}
}