class Application

final class Application {
    public function run(array $argv) : int {
        try {
            EventFacade::emitter()->applicationStarted();
            $cliConfiguration = $this->buildCliConfiguration($argv);
            $pathToXmlConfigurationFile = (new XmlConfigurationFileFinder())->find($cliConfiguration);
            $this->executeCommandsThatOnlyRequireCliConfiguration($cliConfiguration, $pathToXmlConfigurationFile);
            $xmlConfiguration = $this->loadXmlConfiguration($pathToXmlConfigurationFile);
            $configuration = Registry::init($cliConfiguration, $xmlConfiguration);
            (new PhpHandler())->handle($configuration->php());
            if ($configuration->hasBootstrap()) {
                $this->loadBootstrapScript($configuration->bootstrap());
            }
            $this->executeCommandsThatRequireCompleteConfiguration($configuration, $cliConfiguration);
            $testSuite = $this->buildTestSuite($configuration);
            $this->executeCommandsThatRequireCliConfigurationAndTestSuite($cliConfiguration, $testSuite);
            $this->executeHelpCommandWhenThereIsNothingElseToDo($configuration, $testSuite);
            $pharExtensions = null;
            $extensionRequiresCodeCoverageCollection = false;
            $extensionReplacesOutput = false;
            $extensionReplacesProgressOutput = false;
            $extensionReplacesResultOutput = false;
            $extensionRequiresExportOfObjects = false;
            if (!$configuration->noExtensions()) {
                if ($configuration->hasPharExtensionDirectory()) {
                    $pharExtensions = (new PharLoader())->loadPharExtensionsInDirectory($configuration->pharExtensionDirectory());
                }
                $bootstrappedExtensions = $this->bootstrapExtensions($configuration);
                $extensionRequiresCodeCoverageCollection = $bootstrappedExtensions['requiresCodeCoverageCollection'];
                $extensionReplacesOutput = $bootstrappedExtensions['replacesOutput'];
                $extensionReplacesProgressOutput = $bootstrappedExtensions['replacesProgressOutput'];
                $extensionReplacesResultOutput = $bootstrappedExtensions['replacesResultOutput'];
                $extensionRequiresExportOfObjects = $bootstrappedExtensions['requiresExportOfObjects'];
            }
            if ($extensionRequiresExportOfObjects) {
                EventFacade::emitter()->exportObjects();
            }
            CodeCoverage::instance()->init($configuration, CodeCoverageFilterRegistry::instance(), $extensionRequiresCodeCoverageCollection);
            if (CodeCoverage::instance()->isActive()) {
                CodeCoverage::instance()->ignoreLines((new CodeCoverageMetadataApi())->linesToBeIgnored($testSuite));
            }
            $printer = OutputFacade::init($configuration, $extensionReplacesProgressOutput, $extensionReplacesResultOutput);
            if (!$configuration->debug() && !$extensionReplacesOutput) {
                $this->writeRuntimeInformation($printer, $configuration);
                $this->writePharExtensionInformation($printer, $pharExtensions);
                $this->writeRandomSeedInformation($printer, $configuration);
                $printer->print(PHP_EOL);
            }
            if ($configuration->debug()) {
                EventFacade::instance()->registerTracer(new EventLogger('php://stdout', false));
            }
            $this->registerLogfileWriters($configuration);
            $testDoxResultCollector = $this->testDoxResultCollector($configuration);
            TestResultFacade::init();
            $resultCache = $this->initializeTestResultCache($configuration);
            if ($configuration->controlGarbageCollector()) {
                new GarbageCollectionHandler(EventFacade::instance(), $configuration->numberOfTestsBeforeGarbageCollection());
            }
            $baselineGenerator = $this->configureBaseline($configuration);
            EventFacade::instance()->seal();
            $timer = new Timer();
            $timer->start();
            $runner = new TestRunner();
            $runner->run($configuration, $resultCache, $testSuite);
            $duration = $timer->stop();
            $testDoxResult = null;
            if (isset($testDoxResultCollector)) {
                $testDoxResult = $testDoxResultCollector->testMethodsGroupedByClass();
            }
            if ($testDoxResult !== null && $configuration->hasLogfileTestdoxHtml()) {
                try {
                    OutputFacade::printerFor($configuration->logfileTestdoxHtml())
                        ->print((new TestDoxHtmlRenderer())->render($testDoxResult));
                } catch (DirectoryDoesNotExistException|InvalidSocketException $e) {
                    EventFacade::emitter()->testRunnerTriggeredWarning(sprintf('Cannot log test results in TestDox HTML format to "%s": %s', $configuration->logfileTestdoxHtml(), $e->getMessage()));
                }
            }
            if ($testDoxResult !== null && $configuration->hasLogfileTestdoxText()) {
                try {
                    OutputFacade::printerFor($configuration->logfileTestdoxText())
                        ->print((new TestDoxTextRenderer())->render($testDoxResult));
                } catch (DirectoryDoesNotExistException|InvalidSocketException $e) {
                    EventFacade::emitter()->testRunnerTriggeredWarning(sprintf('Cannot log test results in TestDox plain text format to "%s": %s', $configuration->logfileTestdoxText(), $e->getMessage()));
                }
            }
            $result = TestResultFacade::result();
            if (!$extensionReplacesResultOutput && !$configuration->debug()) {
                OutputFacade::printResult($result, $testDoxResult, $duration);
            }
            CodeCoverage::instance()->generateReports($printer, $configuration);
            if (isset($baselineGenerator)) {
                (new Writer())->write($configuration->generateBaseline(), $baselineGenerator->baseline());
                $printer->print(sprintf(PHP_EOL . 'Baseline written to %s.' . PHP_EOL, realpath($configuration->generateBaseline())));
            }
            $shellExitCode = (new ShellExitCodeCalculator())->calculate($configuration->failOnDeprecation(), $configuration->failOnPhpunitDeprecation(), $configuration->failOnEmptyTestSuite(), $configuration->failOnIncomplete(), $configuration->failOnNotice(), $configuration->failOnRisky(), $configuration->failOnSkipped(), $configuration->failOnWarning(), $result);
            EventFacade::emitter()->applicationFinished($shellExitCode);
            return $shellExitCode;
            // @codeCoverageIgnoreStart
        } catch (Throwable $t) {
            $this->exitWithCrashMessage($t);
        }
        // @codeCoverageIgnoreEnd
    }
    private function execute(Command\Command $command, bool $requiresResultCollectedFromEvents = false) : never {
        if ($requiresResultCollectedFromEvents) {
            try {
                TestResultFacade::init();
                EventFacade::instance()->seal();
                $resultCollectedFromEvents = TestResultFacade::result();
            } catch (EventFacadeIsSealedException|UnknownSubscriberTypeException) {
            }
        }
        print Version::getVersionString() . PHP_EOL . PHP_EOL;
        $result = $command->execute();
        print $result->output();
        $shellExitCode = $result->shellExitCode();
        if (isset($resultCollectedFromEvents) && $resultCollectedFromEvents->hasTestTriggeredPhpunitErrorEvents()) {
            $shellExitCode = Result::EXCEPTION;
            print PHP_EOL . PHP_EOL . 'There were errors:' . PHP_EOL;
            foreach ($resultCollectedFromEvents->testTriggeredPhpunitErrorEvents() as $events) {
                foreach ($events as $event) {
                    print PHP_EOL . trim($event->message()) . PHP_EOL;
                }
            }
        }
        exit($shellExitCode);
    }
    private function loadBootstrapScript(string $filename) : void {
        if (!is_readable($filename)) {
            $this->exitWithErrorMessage(sprintf('Cannot open bootstrap script "%s"', $filename));
        }
        try {
            include_once $filename;
        } catch (Throwable $t) {
            $message = sprintf('Error in bootstrap script: %s:%s%s%s%s', $t::class, PHP_EOL, $t->getMessage(), PHP_EOL, $t->getTraceAsString());
            while ($t = $t->getPrevious()) {
                $message .= sprintf('%s%sPrevious error: %s:%s%s%s%s', PHP_EOL, PHP_EOL, $t::class, PHP_EOL, $t->getMessage(), PHP_EOL, $t->getTraceAsString());
            }
            $this->exitWithErrorMessage($message);
        }
        EventFacade::emitter()->testRunnerBootstrapFinished($filename);
    }
    private function buildCliConfiguration(array $argv) : CliConfiguration {
        try {
            $cliConfiguration = (new Builder())->fromParameters($argv);
        } catch (ArgumentsException $e) {
            $this->exitWithErrorMessage($e->getMessage());
        }
        return $cliConfiguration;
    }
    private function loadXmlConfiguration(false|string $configurationFile) : XmlConfiguration {
        if ($configurationFile === false) {
            return DefaultConfiguration::create();
        }
        try {
            return (new Loader())->load($configurationFile);
        } catch (Throwable $e) {
            $this->exitWithErrorMessage($e->getMessage());
        }
    }
    private function buildTestSuite(Configuration $configuration) : TestSuite {
        try {
            return (new TestSuiteBuilder())->build($configuration);
        } catch (Exception $e) {
            $this->exitWithErrorMessage($e->getMessage());
        }
    }
    
    /**
     * @psalm-return array{requiresCodeCoverageCollection: bool, replacesOutput: bool, replacesProgressOutput: bool, replacesResultOutput: bool, requiresExportOfObjects: bool}
     */
    private function bootstrapExtensions(Configuration $configuration) : array {
        $facade = new ExtensionFacade();
        $extensionBootstrapper = new ExtensionBootstrapper($configuration, $facade);
        foreach ($configuration->extensionBootstrappers() as $bootstrapper) {
            $extensionBootstrapper->bootstrap($bootstrapper['className'], $bootstrapper['parameters']);
        }
        return [
            'requiresCodeCoverageCollection' => $facade->requiresCodeCoverageCollection(),
            'replacesOutput' => $facade->replacesOutput(),
            'replacesProgressOutput' => $facade->replacesProgressOutput(),
            'replacesResultOutput' => $facade->replacesResultOutput(),
            'requiresExportOfObjects' => $facade->requiresExportOfObjects(),
        ];
    }
    private function executeCommandsThatOnlyRequireCliConfiguration(CliConfiguration $cliConfiguration, false|string $configurationFile) : void {
        if ($cliConfiguration->generateConfiguration()) {
            $this->execute(new GenerateConfigurationCommand());
        }
        if ($cliConfiguration->migrateConfiguration()) {
            if ($configurationFile === false) {
                $this->exitWithErrorMessage('No configuration file found to migrate');
            }
            $this->execute(new MigrateConfigurationCommand(realpath($configurationFile)));
        }
        if ($cliConfiguration->hasAtLeastVersion()) {
            $this->execute(new AtLeastVersionCommand($cliConfiguration->atLeastVersion()));
        }
        if ($cliConfiguration->version()) {
            $this->execute(new ShowVersionCommand());
        }
        if ($cliConfiguration->checkVersion()) {
            $this->execute(new VersionCheckCommand(new PhpDownloader(), Version::majorVersionNumber(), Version::id()));
        }
        if ($cliConfiguration->help()) {
            $this->execute(new ShowHelpCommand(Result::SUCCESS));
        }
    }
    private function executeCommandsThatRequireCliConfigurationAndTestSuite(CliConfiguration $cliConfiguration, TestSuite $testSuite) : void {
        if ($cliConfiguration->listGroups()) {
            $this->execute(new ListGroupsCommand($testSuite), true);
        }
        if ($cliConfiguration->listTests()) {
            $this->execute(new ListTestsAsTextCommand($testSuite), true);
        }
        if ($cliConfiguration->hasListTestsXml()) {
            $this->execute(new ListTestsAsXmlCommand($cliConfiguration->listTestsXml(), $testSuite), true);
        }
    }
    private function executeCommandsThatRequireCompleteConfiguration(Configuration $configuration, CliConfiguration $cliConfiguration) : void {
        if ($cliConfiguration->listSuites()) {
            $this->execute(new ListTestSuitesCommand($configuration->testSuite()));
        }
        if ($cliConfiguration->warmCoverageCache()) {
            $this->execute(new WarmCodeCoverageCacheCommand($configuration, CodeCoverageFilterRegistry::instance()));
        }
    }
    private function executeHelpCommandWhenThereIsNothingElseToDo(Configuration $configuration, TestSuite $testSuite) : void {
        if ($testSuite->isEmpty() && !$configuration->hasCliArguments() && $configuration->testSuite()
            ->isEmpty()) {
            $this->execute(new ShowHelpCommand(Result::FAILURE));
        }
    }
    private function writeRuntimeInformation(Printer $printer, Configuration $configuration) : void {
        $printer->print(Version::getVersionString() . PHP_EOL . PHP_EOL);
        $runtime = 'PHP ' . PHP_VERSION;
        if (CodeCoverage::instance()->isActive()) {
            $runtime .= ' with ' . CodeCoverage::instance()->driver()
                ->nameAndVersion();
        }
        $this->writeMessage($printer, 'Runtime', $runtime);
        if ($configuration->hasConfigurationFile()) {
            $this->writeMessage($printer, 'Configuration', $configuration->configurationFile());
        }
    }
    
    /**
     * @psalm-param ?list<string> $pharExtensions
     */
    private function writePharExtensionInformation(Printer $printer, ?array $pharExtensions) : void {
        if ($pharExtensions === null) {
            return;
        }
        foreach ($pharExtensions as $extension) {
            $this->writeMessage($printer, 'Extension', $extension);
        }
    }
    private function writeMessage(Printer $printer, string $type, string $message) : void {
        $printer->print(sprintf("%-15s%s\n", $type . ':', $message));
    }
    private function writeRandomSeedInformation(Printer $printer, Configuration $configuration) : void {
        if ($configuration->executionOrder() === TestSuiteSorter::ORDER_RANDOMIZED) {
            $this->writeMessage($printer, 'Random Seed', (string) $configuration->randomOrderSeed());
        }
    }
    
    /**
     * @throws EventFacadeIsSealedException
     * @throws UnknownSubscriberTypeException
     */
    private function registerLogfileWriters(Configuration $configuration) : void {
        if ($configuration->hasLogEventsText()) {
            if (is_file($configuration->logEventsText())) {
                unlink($configuration->logEventsText());
            }
            EventFacade::instance()->registerTracer(new EventLogger($configuration->logEventsText(), false));
        }
        if ($configuration->hasLogEventsVerboseText()) {
            if (is_file($configuration->logEventsVerboseText())) {
                unlink($configuration->logEventsVerboseText());
            }
            EventFacade::instance()->registerTracer(new EventLogger($configuration->logEventsVerboseText(), true));
            EventFacade::emitter()->exportObjects();
        }
        if ($configuration->hasLogfileJunit()) {
            try {
                new JunitXmlLogger(OutputFacade::printerFor($configuration->logfileJunit()), EventFacade::instance());
            } catch (DirectoryDoesNotExistException|InvalidSocketException $e) {
                EventFacade::emitter()->testRunnerTriggeredWarning(sprintf('Cannot log test results in JUnit XML format to "%s": %s', $configuration->logfileJunit(), $e->getMessage()));
            }
        }
        if ($configuration->hasLogfileTeamcity()) {
            try {
                new TeamCityLogger(DefaultPrinter::from($configuration->logfileTeamcity()), EventFacade::instance());
            } catch (DirectoryDoesNotExistException|InvalidSocketException $e) {
                EventFacade::emitter()->testRunnerTriggeredWarning(sprintf('Cannot log test results in TeamCity format to "%s": %s', $configuration->logfileTeamcity(), $e->getMessage()));
            }
        }
    }
    
    /**
     * @throws EventFacadeIsSealedException
     * @throws UnknownSubscriberTypeException
     */
    private function testDoxResultCollector(Configuration $configuration) : ?TestDoxResultCollector {
        if ($configuration->hasLogfileTestdoxHtml() || $configuration->hasLogfileTestdoxText() || $configuration->outputIsTestDox()) {
            return new TestDoxResultCollector(EventFacade::instance(), $configuration->source());
        }
        return null;
    }
    
    /**
     * @throws EventFacadeIsSealedException
     * @throws UnknownSubscriberTypeException
     */
    private function initializeTestResultCache(Configuration $configuration) : ResultCache {
        if ($configuration->cacheResult()) {
            $cache = new DefaultResultCache($configuration->testResultCacheFile());
            new ResultCacheHandler($cache, EventFacade::instance());
            return $cache;
        }
        return new NullResultCache();
    }
    
    /**
     * @throws EventFacadeIsSealedException
     * @throws UnknownSubscriberTypeException
     */
    private function configureBaseline(Configuration $configuration) : ?BaselineGenerator {
        if ($configuration->hasGenerateBaseline()) {
            return new BaselineGenerator(EventFacade::instance(), $configuration->source());
        }
        if ($configuration->source()
            ->useBaseline()) {
            
            /** @psalm-suppress MissingThrowsDocblock */
            $baselineFile = $configuration->source()
                ->baseline();
            $baseline = null;
            try {
                $baseline = (new Reader())->read($baselineFile);
            } catch (CannotLoadBaselineException $e) {
                EventFacade::emitter()->testRunnerTriggeredWarning($e->getMessage());
            }
            if ($baseline !== null) {
                ErrorHandler::instance()->use($baseline);
            }
        }
        return null;
    }
    
    /**
     * @codeCoverageIgnore
     */
    private function exitWithCrashMessage(Throwable $t) : never {
        $message = $t->getMessage();
        if (empty(trim($message))) {
            $message = '(no message)';
        }
        printf('%s%sAn error occurred inside PHPUnit.%s%sMessage:  %s', PHP_EOL, PHP_EOL, PHP_EOL, PHP_EOL, $message);
        $first = true;
        if ($t->getPrevious()) {
            $t = $t->getPrevious();
        }
        do {
            printf('%s%s: %s:%d%s%s%s%s', PHP_EOL, $first ? 'Location' : 'Caused by', $t->getFile(), $t->getLine(), PHP_EOL, PHP_EOL, $t->getTraceAsString(), PHP_EOL);
            $first = false;
        } while ($t = $t->getPrevious());
        exit(Result::CRASH);
    }
    private function exitWithErrorMessage(string $message) : never {
        print Version::getVersionString() . PHP_EOL . PHP_EOL . $message . PHP_EOL;
        exit(Result::EXCEPTION);
    }

}