<?php

namespace Spatie\LaravelIgnition\Views;

use Exception;
use Illuminate\Contracts\View\Engine;
use Illuminate\Foundation\Application;
use Illuminate\Support\Arr;
use Illuminate\Support\Collection;
use Illuminate\View\Engines\PhpEngine;
use Illuminate\View\ViewException;
use ReflectionClass;
use ReflectionProperty;
use Spatie\Ignition\Contracts\ProvidesSolution;
use Spatie\LaravelIgnition\Exceptions\ViewException as IgnitionViewException;
use Spatie\LaravelIgnition\Exceptions\ViewExceptionWithSolution;
use Throwable;

class ViewExceptionMapper
{
    protected Engine $compilerEngine;
    protected BladeSourceMapCompiler $bladeSourceMapCompiler;
    protected array $knownPaths;

    public function __construct(BladeSourceMapCompiler $bladeSourceMapCompiler)
    {
        $resolver = app('view.engine.resolver');

        $this->compilerEngine = $resolver->resolve('blade');

        $this->bladeSourceMapCompiler = $bladeSourceMapCompiler;
    }

    public function map(ViewException $viewException): IgnitionViewException
    {
        $baseException = $this->getRealException($viewException);

        if ($baseException instanceof IgnitionViewException) {
            return $baseException;
        }

        preg_match('/\(View: (?P<path>.*?)\)/', $viewException->getMessage(), $matches);

        $compiledViewPath = $matches['path'];

        $exception = $this->createException($baseException);

        if ($baseException instanceof ProvidesSolution) {
            /** @var ViewExceptionWithSolution $exception */
            $exception->setSolution($baseException->getSolution());
        }

        $this->modifyViewsInTrace($exception);

        $exception->setView($compiledViewPath);
        $exception->setViewData($this->getViewData($exception));

        return $exception;
    }

    protected function createException(Throwable $baseException): IgnitionViewException
    {
        $viewExceptionClass = $baseException instanceof ProvidesSolution
            ? ViewExceptionWithSolution::class
            : IgnitionViewException::class;

        $viewFile = $this->findCompiledView($baseException->getFile());
        $file = $viewFile ?? $baseException->getFile();
        $line = $viewFile ? $this->getBladeLineNumber($file, $baseException->getLine()) : $baseException->getLine();

        return new $viewExceptionClass(
            $baseException->getMessage(),
            0,
            1,
            $file,
            $line,
            $baseException
        );
    }

    protected function modifyViewsInTrace(IgnitionViewException $exception): void
    {
        $trace = Collection::make($exception->getPrevious()->getTrace())
            ->map(function ($trace) {
                if ($originalPath = $this->findCompiledView(Arr::get($trace, 'file', ''))) {
                    $trace['file'] = $originalPath;
                    $trace['line'] = $this->getBladeLineNumber($trace['file'], $trace['line']);
                }

                return $trace;
            })->toArray();

        $traceProperty = new ReflectionProperty('Exception', 'trace');
        $traceProperty->setAccessible(true);
        $traceProperty->setValue($exception, $trace);
    }

    /**
     * Look at the previous exceptions to find the original exception.
     * This is usually the first Exception that is not a ViewException.
     */
    protected function getRealException(Throwable $exception): Throwable
    {
        $rootException = $exception->getPrevious() ?? $exception;

        while ($rootException instanceof ViewException && $rootException->getPrevious()) {
            $rootException = $rootException->getPrevious();
        }

        return $rootException;
    }

    protected function findCompiledView(string $compiledPath): ?string
    {
        $this->knownPaths ??= $this->getKnownPaths();

        return $this->knownPaths[$compiledPath] ?? null;
    }

    protected function getKnownPaths(): array
    {
        $compilerEngineReflection = new ReflectionClass($this->compilerEngine);

        if (! $compilerEngineReflection->hasProperty('lastCompiled') && $compilerEngineReflection->hasProperty('engine')) {
            $compilerEngine = $compilerEngineReflection->getProperty('engine');
            $compilerEngine->setAccessible(true);
            $compilerEngine = $compilerEngine->getValue($this->compilerEngine);
            $lastCompiled = new ReflectionProperty($compilerEngine, 'lastCompiled');
            $lastCompiled->setAccessible(true);
            $lastCompiled = $lastCompiled->getValue($compilerEngine);
        } else {
            $lastCompiled = $compilerEngineReflection->getProperty('lastCompiled');
            $lastCompiled->setAccessible(true);
            $lastCompiled = $lastCompiled->getValue($this->compilerEngine);
        }

        $knownPaths = [];
        foreach ($lastCompiled as $lastCompiledPath) {
            $compiledPath = $this->compilerEngine->getCompiler()->getCompiledPath($lastCompiledPath);

            $knownPaths[realpath($compiledPath ?? $lastCompiledPath)] = realpath($lastCompiledPath);
        }

        return $knownPaths;
    }

    protected function getBladeLineNumber(string $view, int $compiledLineNumber): int
    {
        return $this->bladeSourceMapCompiler->detectLineNumber($view, $compiledLineNumber);
    }

    protected function getViewData(Throwable $exception): array
    {
        foreach ($exception->getTrace() as $frame) {
            if (Arr::get($frame, 'class') === PhpEngine::class) {
                $data = Arr::get($frame, 'args.1', []);

                return $this->filterViewData($data);
            }
        }

        return [];
    }

    protected function filterViewData(array $data): array
    {
        // By default, Laravel views get two data keys:
        // __env and app. We try to filter them out.
        return array_filter($data, function ($value, $key) {
            if ($key === 'app') {
                return ! $value instanceof Application;
            }

            return $key !== '__env';
        }, ARRAY_FILTER_USE_BOTH);
    }
}

• [F] BladeSourceMapCompiler.php
  Delete
• [F] ViewExceptionMapper.php
  Delete

Blog Section

Discover the Latest in Digital Payments and NFC Technology

Dive into our blog to explore the cutting-edge trends in digital payments and NFC technology. Stay updated on the innovations that are revolutionizing transactions, boosting security, and making payments quicker and more convenient. Learn how these advancements are shaping the future of financial interactions and driving the global transition towards a cashless world.

The Rise of Contactless Payments:...

In recent years, contactless payments have surged in popularity, driven...

Visit Blog

March 27, 2024

Enhancing Payment Security: The Role...

As digital transactions proliferate, ensuring robust payment security is more critical than ever. Two foundational...

Visit Blog

March 27, 2024

The Future of Digital Wallets:...

Digital wallets have fundamentally transformed how we manage money, offering a streamlined, secure, and highly...

Visit Blog

March 27, 2024