Viewing file:  MakeViewVariableOptionalSolution.php (3.74 KB) -rw-rw-r--
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<?php
namespace Spatie\LaravelIgnition\Solutions;
use Illuminate\Support\Facades\Blade;
use Illuminate\Support\Str;
use Spatie\Ignition\Contracts\RunnableSolution;
class MakeViewVariableOptionalSolution implements RunnableSolution
{
protected ?string $variableName;
protected ?string $viewFile;
public function __construct(string $variableName = null, string $viewFile = null)
{
$this->variableName = $variableName;
$this->viewFile = $viewFile;
}
public function getSolutionTitle(): string
{
return "$$this->variableName is undefined";
}
public function getDocumentationLinks(): array
{
return [];
}
public function getSolutionActionDescription(): string
{
$output = [
'Make the variable optional in the blade template.',
"Replace `{{ $$this->variableName }}` with `{{ $$this->variableName ?? '' }}`",
];
return implode(PHP_EOL, $output);
}
public function getRunButtonText(): string
{
return 'Make variable optional';
}
public function getSolutionDescription(): string
{
return '';
}
public function getRunParameters(): array
{
return [
'variableName' => $this->variableName,
'viewFile' => $this->viewFile,
];
}
/**
* @param array<string, mixed> $parameters
*
* @return bool
*/
public function isRunnable(array $parameters = []): bool
{
return $this->makeOptional($this->getRunParameters()) !== false;
}
/**
* @param array<string, string> $parameters
*
* @return void
*/
public function run(array $parameters = []): void
{
$output = $this->makeOptional($parameters);
if ($output !== false) {
file_put_contents($parameters['viewFile'], $output);
}
}
protected function isSafePath(string $path): bool
{
if (! Str::startsWith($path, ['/', './'])) {
return false;
}
if (! Str::endsWith($path, '.blade.php')) {
return false;
}
return true;
}
/**
* @param array<string, string> $parameters
*
* @return bool|string
*/
public function makeOptional(array $parameters = []): bool|string
{
if (! $this->isSafePath($parameters['viewFile'])) {
return false;
}
$originalContents = (string)file_get_contents($parameters['viewFile']);
$newContents = str_replace('$'.$parameters['variableName'], '$'.$parameters['variableName']." ?? ''", $originalContents);
$originalTokens = token_get_all(Blade::compileString($originalContents));
$newTokens = token_get_all(Blade::compileString($newContents));
$expectedTokens = $this->generateExpectedTokens($originalTokens, $parameters['variableName']);
if ($expectedTokens !== $newTokens) {
return false;
}
return $newContents;
}
/**
* @param array<int, mixed> $originalTokens
* @param string $variableName
*
* @return array<int, mixed>
*/
protected function generateExpectedTokens(array $originalTokens, string $variableName): array
{
$expectedTokens = [];
foreach ($originalTokens as $token) {
$expectedTokens[] = $token;
if ($token[0] === T_VARIABLE && $token[1] === '$'.$variableName) {
$expectedTokens[] = [T_WHITESPACE, ' ', $token[2]];
$expectedTokens[] = [T_COALESCE, '??', $token[2]];
$expectedTokens[] = [T_WHITESPACE, ' ', $token[2]];
$expectedTokens[] = [T_CONSTANT_ENCAPSED_STRING, "''", $token[2]];
}
}
return $expectedTokens;
}
}
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