<?php

namespace Illuminate\Foundation\Exceptions\Renderer\Mappers;

use Illuminate\Contracts\View\Factory;
use Illuminate\Support\Arr;
use Illuminate\Support\Collection;
use Illuminate\View\Compilers\BladeCompiler;
use Illuminate\View\ViewException;
use ReflectionClass;
use ReflectionProperty;
use Symfony\Component\ErrorHandler\Exception\FlattenException;
use Throwable;

/*
 * This file contains parts of https://github.com/spatie/laravel-ignition.
 *
 * (c) Spatie <info@spatie.be>
 *
 * For the full copyright and license information, please review its LICENSE:
 *
 * The MIT License (MIT)
 *
 * Copyright (c) Spatie <info@spatie.be>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

class BladeMapper
{
    /**
     * The view factory instance.
     *
     * @var \Illuminate\Contracts\View\Factory
     */
    protected $factory;

    /**
     * The Blade compiler instance.
     *
     * @var \Illuminate\View\Compilers\BladeCompiler
     */
    protected $bladeCompiler;

    /**
     * Create a new Blade mapper instance.
     *
     * @param  \Illuminate\Contracts\View\Factory  $factory
     * @param  \Illuminate\View\Compilers\BladeCompiler  $bladeCompiler
     * @return void
     */
    public function __construct(Factory $factory, BladeCompiler $bladeCompiler)
    {
        $this->factory = $factory;
        $this->bladeCompiler = $bladeCompiler;
    }

    /**
     * Map cached view paths to their original paths.
     *
     * @param  \Symfony\Component\ErrorHandler\Exception\FlattenException  $exception
     * @return \Symfony\Component\ErrorHandler\Exception\FlattenException
     */
    public function map(FlattenException $exception)
    {
        while ($exception->getClass() === ViewException::class) {
            if (($previous = $exception->getPrevious()) === null) {
                break;
            }

            $exception = $previous;
        }

        $trace = Collection::make($exception->getTrace())
            ->map(function ($frame) {
                if ($originalPath = $this->findCompiledView((string) Arr::get($frame, 'file', ''))) {
                    $frame['file'] = $originalPath;
                    $frame['line'] = $this->detectLineNumber($frame['file'], $frame['line']);
                }

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

        return tap($exception, fn () => (fn () => $this->trace = $trace)->call($exception));
    }

    /**
     * Find the compiled view file for the given compiled path.
     *
     * @param  string  $compiledPath
     * @return string|null
     */
    protected function findCompiledView(string $compiledPath)
    {
        return once(fn () => $this->getKnownPaths())[$compiledPath] ?? null;
    }

    /**
     * Get the list of known paths from the compiler engine.
     *
     * @return array<string, string>
     */
    protected function getKnownPaths()
    {
        $compilerEngineReflection = new ReflectionClass(
            $bladeCompilerEngine = $this->factory->getEngineResolver()->resolve('blade'),
        );

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

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

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

        return $knownPaths;
    }

    /**
     * Filter out the view data that should not be shown in the exception report.
     *
     * @param  array<string, mixed>  $data
     * @return array<string, mixed>
     */
    protected function filterViewData(array $data)
    {
        return array_filter($data, function ($value, $key) {
            if ($key === 'app') {
                return ! $value instanceof Application;
            }

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

    /**
     * Detect the line number in the original blade file.
     *
     * @param  string  $filename
     * @param  int  $compiledLineNumber
     * @return int
     */
    protected function detectLineNumber(string $filename, int $compiledLineNumber)
    {
        $map = $this->compileSourcemap((string) file_get_contents($filename));

        return $this->findClosestLineNumberMapping($map, $compiledLineNumber);
    }

    /**
     * Compile the source map for the given blade file.
     *
     * @param  string  $value
     * @return string
     */
    protected function compileSourcemap(string $value)
    {
        try {
            $value = $this->addEchoLineNumbers($value);
            $value = $this->addStatementLineNumbers($value);
            $value = $this->addBladeComponentLineNumbers($value);

            $value = $this->bladeCompiler->compileString($value);

            return $this->trimEmptyLines($value);
        } catch (Throwable $e) {
            report($e);

            return $value;
        }
    }

    /**
     * Add line numbers to echo statements.
     *
     * @param  string  $value
     * @return string
     */
    protected function addEchoLineNumbers(string $value)
    {
        $echoPairs = [['{{', '}}'], ['{{{', '}}}'], ['{!!', '!!}']];

        foreach ($echoPairs as $pair) {
            // Matches {{ $value }}, {!! $value !!} and  {{{ $value }}} depending on $pair
            $pattern = sprintf('/(@)?%s\s*(.+?)\s*%s(\r?\n)?/s', $pair[0], $pair[1]);

            if (preg_match_all($pattern, $value, $matches, PREG_OFFSET_CAPTURE)) {
                foreach (array_reverse($matches[0]) as $match) {
                    $position = mb_strlen(substr($value, 0, $match[1]));

                    $value = $this->insertLineNumberAtPosition($position, $value);
                }
            }
        }

        return $value;
    }

    /**
     * Add line numbers to blade statements.
     *
     * @param  string  $value
     * @return string
     */
    protected function addStatementLineNumbers(string $value)
    {
        $shouldInsertLineNumbers = preg_match_all(
            '/\B@(@?\w+(?:::\w+)?)([ \t]*)(\( ( (?>[^()]+) | (?3) )* \))?/x',
            $value,
            $matches,
            PREG_OFFSET_CAPTURE
        );

        if ($shouldInsertLineNumbers) {
            foreach (array_reverse($matches[0]) as $match) {
                $position = mb_strlen(substr($value, 0, $match[1]));

                $value = $this->insertLineNumberAtPosition($position, $value);
            }
        }

        return $value;
    }

    /**
     * Add line numbers to blade components.
     *
     * @param  string  $value
     * @return string
     */
    protected function addBladeComponentLineNumbers(string $value)
    {
        $shouldInsertLineNumbers = preg_match_all(
            '/<\s*x[-:]([\w\-:.]*)/mx',
            $value,
            $matches,
            PREG_OFFSET_CAPTURE
        );

        if ($shouldInsertLineNumbers) {
            foreach (array_reverse($matches[0]) as $match) {
                $position = mb_strlen(substr($value, 0, $match[1]));

                $value = $this->insertLineNumberAtPosition($position, $value);
            }
        }

        return $value;
    }

    /**
     * Insert a line number at the given position.
     *
     * @param  int  $position
     * @param  string  $value
     * @return string
     */
    protected function insertLineNumberAtPosition(int $position, string $value)
    {
        $before = mb_substr($value, 0, $position);

        $lineNumber = count(explode("\n", $before));

        return mb_substr($value, 0, $position)."|---LINE:{$lineNumber}---|".mb_substr($value, $position);
    }

    /**
     * Trim empty lines from the given value.
     *
     * @param  string  $value
     * @return string
     */
    protected function trimEmptyLines(string $value)
    {
        $value = preg_replace('/^\|---LINE:([0-9]+)---\|$/m', '', $value);

        return ltrim((string) $value, PHP_EOL);
    }

    /**
     * Find the closest line number mapping in the given source map.
     *
     * @param  string  $map
     * @param  int  $compiledLineNumber
     * @return int
     */
    protected function findClosestLineNumberMapping(string $map, int $compiledLineNumber)
    {
        $map = explode("\n", $map);

        $maxDistance = 20;

        $pattern = '/\|---LINE:(?P<line>[0-9]+)---\|/m';

        $lineNumberToCheck = $compiledLineNumber - 1;

        while (true) {
            if ($lineNumberToCheck < $compiledLineNumber - $maxDistance) {
                return min($compiledLineNumber, count($map));
            }

            if (preg_match($pattern, $map[$lineNumberToCheck] ?? '', $matches)) {
                return (int) $matches['line'];
            }

            $lineNumberToCheck--;
        }
    }
}

.NET Framework

Project Request

ProjectC

Vehicle Maintenance

Movie Navigator

Customers Exchange

ATM

.NET Core

Mail Daemon

Custom

Buns of code

PHP

Mediabox

Loan Castle

Content Management

Laravel

Phone Check

Frontend

Forex Wall

Business projects

Certification Center

Amerikas Auto

Pet projects

Geolocation Assistant

Web Dynamics

Blackball

Good old times

DOS Clock

BrainOut

Airport Administrator

Atomizer

Mediabox