class ResultPrinter

final class ResultPrinter {
    private readonly Printer $printer;
    private readonly bool $displayPhpunitErrors;
    private readonly bool $displayPhpunitWarnings;
    private readonly bool $displayTestsWithErrors;
    private readonly bool $displayTestsWithFailedAssertions;
    private readonly bool $displayRiskyTests;
    private readonly bool $displayPhpunitDeprecations;
    private readonly bool $displayDetailsOnIncompleteTests;
    private readonly bool $displayDetailsOnSkippedTests;
    private readonly bool $displayDetailsOnTestsThatTriggerDeprecations;
    private readonly bool $displayDetailsOnTestsThatTriggerErrors;
    private readonly bool $displayDetailsOnTestsThatTriggerNotices;
    private readonly bool $displayDetailsOnTestsThatTriggerWarnings;
    private readonly bool $displayDefectsInReverseOrder;
    private bool $listPrinted = false;
    public function __construct(Printer $printer, bool $displayPhpunitErrors, bool $displayPhpunitWarnings, bool $displayPhpunitDeprecations, bool $displayTestsWithErrors, bool $displayTestsWithFailedAssertions, bool $displayRiskyTests, bool $displayDetailsOnIncompleteTests, bool $displayDetailsOnSkippedTests, bool $displayDetailsOnTestsThatTriggerDeprecations, bool $displayDetailsOnTestsThatTriggerErrors, bool $displayDetailsOnTestsThatTriggerNotices, bool $displayDetailsOnTestsThatTriggerWarnings, bool $displayDefectsInReverseOrder) {
        $this->printer = $printer;
        $this->displayPhpunitErrors = $displayPhpunitErrors;
        $this->displayPhpunitWarnings = $displayPhpunitWarnings;
        $this->displayPhpunitDeprecations = $displayPhpunitDeprecations;
        $this->displayTestsWithErrors = $displayTestsWithErrors;
        $this->displayTestsWithFailedAssertions = $displayTestsWithFailedAssertions;
        $this->displayRiskyTests = $displayRiskyTests;
        $this->displayDetailsOnIncompleteTests = $displayDetailsOnIncompleteTests;
        $this->displayDetailsOnSkippedTests = $displayDetailsOnSkippedTests;
        $this->displayDetailsOnTestsThatTriggerDeprecations = $displayDetailsOnTestsThatTriggerDeprecations;
        $this->displayDetailsOnTestsThatTriggerErrors = $displayDetailsOnTestsThatTriggerErrors;
        $this->displayDetailsOnTestsThatTriggerNotices = $displayDetailsOnTestsThatTriggerNotices;
        $this->displayDetailsOnTestsThatTriggerWarnings = $displayDetailsOnTestsThatTriggerWarnings;
        $this->displayDefectsInReverseOrder = $displayDefectsInReverseOrder;
    }
    public function print(TestResult $result) : void {
        if ($this->displayPhpunitErrors) {
            $this->printPhpunitErrors($result);
        }
        if ($this->displayPhpunitWarnings) {
            $this->printTestRunnerWarnings($result);
        }
        if ($this->displayPhpunitDeprecations) {
            $this->printTestRunnerDeprecations($result);
        }
        if ($this->displayTestsWithErrors) {
            $this->printTestsWithErrors($result);
        }
        if ($this->displayTestsWithFailedAssertions) {
            $this->printTestsWithFailedAssertions($result);
        }
        if ($this->displayPhpunitWarnings) {
            $this->printDetailsOnTestsThatTriggeredPhpunitWarnings($result);
        }
        if ($this->displayPhpunitDeprecations) {
            $this->printDetailsOnTestsThatTriggeredPhpunitDeprecations($result);
        }
        if ($this->displayRiskyTests) {
            $this->printRiskyTests($result);
        }
        if ($this->displayDetailsOnIncompleteTests) {
            $this->printIncompleteTests($result);
        }
        if ($this->displayDetailsOnSkippedTests) {
            $this->printSkippedTestSuites($result);
            $this->printSkippedTests($result);
        }
        if ($this->displayDetailsOnTestsThatTriggerErrors) {
            $this->printIssueList('error', $result->errors());
        }
        if ($this->displayDetailsOnTestsThatTriggerWarnings) {
            $this->printIssueList('PHP warning', $result->phpWarnings());
            $this->printIssueList('warning', $result->warnings());
        }
        if ($this->displayDetailsOnTestsThatTriggerNotices) {
            $this->printIssueList('PHP notice', $result->phpNotices());
            $this->printIssueList('notice', $result->notices());
        }
        if ($this->displayDetailsOnTestsThatTriggerDeprecations) {
            $this->printIssueList('PHP deprecation', $result->phpDeprecations());
            $this->printIssueList('deprecation', $result->deprecations());
        }
    }
    private function printPhpunitErrors(TestResult $result) : void {
        if (!$result->hasTestTriggeredPhpunitErrorEvents()) {
            return;
        }
        $elements = $this->mapTestsWithIssuesEventsToElements($result->testTriggeredPhpunitErrorEvents());
        $this->printListHeaderWithNumber($elements['numberOfTestsWithIssues'], 'PHPUnit error');
        $this->printList($elements['elements']);
    }
    private function printDetailsOnTestsThatTriggeredPhpunitDeprecations(TestResult $result) : void {
        if (!$result->hasTestTriggeredPhpunitDeprecationEvents()) {
            return;
        }
        $elements = $this->mapTestsWithIssuesEventsToElements($result->testTriggeredPhpunitDeprecationEvents());
        $this->printListHeaderWithNumberOfTestsAndNumberOfIssues($elements['numberOfTestsWithIssues'], $elements['numberOfIssues'], 'PHPUnit deprecation');
        $this->printList($elements['elements']);
    }
    private function printTestRunnerWarnings(TestResult $result) : void {
        if (!$result->hasTestRunnerTriggeredWarningEvents()) {
            return;
        }
        $elements = [];
        foreach ($result->testRunnerTriggeredWarningEvents() as $event) {
            $elements[] = [
                'title' => $event->message(),
                'body' => '',
            ];
        }
        $this->printListHeaderWithNumber(count($elements), 'PHPUnit test runner warning');
        $this->printList($elements);
    }
    private function printTestRunnerDeprecations(TestResult $result) : void {
        if (!$result->hasTestRunnerTriggeredDeprecationEvents()) {
            return;
        }
        $elements = [];
        foreach ($result->testRunnerTriggeredDeprecationEvents() as $event) {
            $elements[] = [
                'title' => $event->message(),
                'body' => '',
            ];
        }
        $this->printListHeaderWithNumber(count($elements), 'PHPUnit test runner deprecation');
        $this->printList($elements);
    }
    private function printDetailsOnTestsThatTriggeredPhpunitWarnings(TestResult $result) : void {
        if (!$result->hasTestTriggeredPhpunitWarningEvents()) {
            return;
        }
        $elements = $this->mapTestsWithIssuesEventsToElements($result->testTriggeredPhpunitWarningEvents());
        $this->printListHeaderWithNumberOfTestsAndNumberOfIssues($elements['numberOfTestsWithIssues'], $elements['numberOfIssues'], 'PHPUnit warning');
        $this->printList($elements['elements']);
    }
    private function printTestsWithErrors(TestResult $result) : void {
        if (!$result->hasTestErroredEvents()) {
            return;
        }
        $elements = [];
        foreach ($result->testErroredEvents() as $event) {
            if ($event instanceof BeforeFirstTestMethodErrored) {
                $title = $event->testClassName();
            }
            else {
                $title = $this->name($event->test());
            }
            $elements[] = [
                'title' => $title,
                'body' => $event->throwable()
                    ->asString(),
            ];
        }
        $this->printListHeaderWithNumber(count($elements), 'error');
        $this->printList($elements);
    }
    private function printTestsWithFailedAssertions(TestResult $result) : void {
        if (!$result->hasTestFailedEvents()) {
            return;
        }
        $elements = [];
        foreach ($result->testFailedEvents() as $event) {
            $body = $event->throwable()
                ->asString();
            if (str_starts_with($body, 'AssertionError: ')) {
                $body = substr($body, strlen('AssertionError: '));
            }
            $elements[] = [
                'title' => $this->name($event->test()),
                'body' => $body,
            ];
        }
        $this->printListHeaderWithNumber(count($elements), 'failure');
        $this->printList($elements);
    }
    private function printRiskyTests(TestResult $result) : void {
        if (!$result->hasTestConsideredRiskyEvents()) {
            return;
        }
        $elements = $this->mapTestsWithIssuesEventsToElements($result->testConsideredRiskyEvents());
        $this->printListHeaderWithNumber($elements['numberOfTestsWithIssues'], 'risky test');
        $this->printList($elements['elements']);
    }
    private function printIncompleteTests(TestResult $result) : void {
        if (!$result->hasTestMarkedIncompleteEvents()) {
            return;
        }
        $elements = [];
        foreach ($result->testMarkedIncompleteEvents() as $event) {
            $elements[] = [
                'title' => $this->name($event->test()),
                'body' => $event->throwable()
                    ->asString(),
            ];
        }
        $this->printListHeaderWithNumber(count($elements), 'incomplete test');
        $this->printList($elements);
    }
    private function printSkippedTestSuites(TestResult $result) : void {
        if (!$result->hasTestSuiteSkippedEvents()) {
            return;
        }
        $elements = [];
        foreach ($result->testSuiteSkippedEvents() as $event) {
            $elements[] = [
                'title' => $event->testSuite()
                    ->name(),
                'body' => $event->message(),
            ];
        }
        $this->printListHeaderWithNumber(count($elements), 'skipped test suite');
        $this->printList($elements);
    }
    private function printSkippedTests(TestResult $result) : void {
        if (!$result->hasTestSkippedEvents()) {
            return;
        }
        $elements = [];
        foreach ($result->testSkippedEvents() as $event) {
            $elements[] = [
                'title' => $this->name($event->test()),
                'body' => $event->message(),
            ];
        }
        $this->printListHeaderWithNumber(count($elements), 'skipped test');
        $this->printList($elements);
    }
    
    /**
     * @psalm-param non-empty-string $type
     * @psalm-param list<Issue> $issues
     */
    private function printIssueList(string $type, array $issues) : void {
        if (empty($issues)) {
            return;
        }
        $numberOfUniqueIssues = count($issues);
        $triggeringTests = [];
        foreach ($issues as $issue) {
            $triggeringTests = array_merge($triggeringTests, array_keys($issue->triggeringTests()));
        }
        $numberOfTests = count(array_unique($triggeringTests));
        unset($triggeringTests);
        $this->printListHeader(sprintf('%d test%s triggered %d %s%s:' . PHP_EOL . PHP_EOL, $numberOfTests, $numberOfTests !== 1 ? 's' : '', $numberOfUniqueIssues, $type, $numberOfUniqueIssues !== 1 ? 's' : ''));
        $i = 1;
        foreach ($issues as $issue) {
            $title = sprintf('%s:%d', $issue->file(), $issue->line());
            $body = trim($issue->description()) . PHP_EOL . PHP_EOL . 'Triggered by:';
            $triggeringTests = $issue->triggeringTests();
            ksort($triggeringTests);
            foreach ($triggeringTests as $triggeringTest) {
                $body .= PHP_EOL . PHP_EOL . '* ' . $triggeringTest['test']->id();
                if ($triggeringTest['count'] > 1) {
                    $body .= sprintf(' (%d times)', $triggeringTest['count']);
                }
                if ($triggeringTest['test']->isTestMethod()) {
                    $body .= PHP_EOL . '  ' . $triggeringTest['test']->file() . ':' . $triggeringTest['test']->line();
                }
            }
            $this->printIssueListElement($i++, $title, $body);
            $this->printer
                ->print(PHP_EOL);
        }
    }
    private function printListHeaderWithNumberOfTestsAndNumberOfIssues(int $numberOfTestsWithIssues, int $numberOfIssues, string $type) : void {
        $this->printListHeader(sprintf("%d test%s triggered %d %s%s:\n\n", $numberOfTestsWithIssues, $numberOfTestsWithIssues !== 1 ? 's' : '', $numberOfIssues, $type, $numberOfIssues !== 1 ? 's' : ''));
    }
    private function printListHeaderWithNumber(int $number, string $type) : void {
        $this->printListHeader(sprintf("There %s %d %s%s:\n\n", $number === 1 ? 'was' : 'were', $number, $type, $number === 1 ? '' : 's'));
    }
    private function printListHeader(string $header) : void {
        if ($this->listPrinted) {
            $this->printer
                ->print("--\n\n");
        }
        $this->listPrinted = true;
        $this->printer
            ->print($header);
    }
    
    /**
     * @psalm-param list<array{title: string, body: string}> $elements
     */
    private function printList(array $elements) : void {
        $i = 1;
        if ($this->displayDefectsInReverseOrder) {
            $elements = array_reverse($elements);
        }
        foreach ($elements as $element) {
            $this->printListElement($i++, $element['title'], $element['body']);
        }
        $this->printer
            ->print("\n");
    }
    private function printListElement(int $number, string $title, string $body) : void {
        $body = trim($body);
        $this->printer
            ->print(sprintf("%s%d) %s\n%s%s", $number > 1 ? "\n" : '', $number, $title, $body, !empty($body) ? "\n" : ''));
    }
    private function printIssueListElement(int $number, string $title, string $body) : void {
        $body = trim($body);
        $this->printer
            ->print(sprintf("%d) %s\n%s%s", $number, $title, $body, !empty($body) ? "\n" : ''));
    }
    private function name(Test $test) : string {
        if ($test->isTestMethod()) {
            assert($test instanceof TestMethod);
            if (!$test->testData()
                ->hasDataFromDataProvider()) {
                return $test->nameWithClass();
            }
            return $test->className() . '::' . $test->methodName() . $test->testData()
                ->dataFromDataProvider()
                ->dataAsStringForResultOutput();
        }
        return $test->name();
    }
    
    /**
     * @psalm-param array<string,list<ConsideredRisky|DeprecationTriggered|PhpDeprecationTriggered|PhpunitDeprecationTriggered|ErrorTriggered|NoticeTriggered|PhpNoticeTriggered|WarningTriggered|PhpWarningTriggered|PhpunitErrorTriggered|PhpunitWarningTriggered>> $events
     *
     * @psalm-return array{numberOfTestsWithIssues: int, numberOfIssues: int, elements: list<array{title: string, body: string}>}
     */
    private function mapTestsWithIssuesEventsToElements(array $events) : array {
        $elements = [];
        $issues = 0;
        foreach ($events as $reasons) {
            $test = $reasons[0]->test();
            $testLocation = $this->testLocation($test);
            $title = $this->name($test);
            $body = '';
            $first = true;
            $single = count($reasons) === 1;
            foreach ($reasons as $reason) {
                if ($first) {
                    $first = false;
                }
                else {
                    $body .= PHP_EOL;
                }
                $body .= $this->reasonMessage($reason, $single);
                $body .= $this->reasonLocation($reason, $single);
                $issues++;
            }
            if (!empty($testLocation)) {
                $body .= $testLocation;
            }
            $elements[] = [
                'title' => $title,
                'body' => $body,
            ];
        }
        return [
            'numberOfTestsWithIssues' => count($events),
            'numberOfIssues' => $issues,
            'elements' => $elements,
        ];
    }
    private function testLocation(Test $test) : string {
        if (!$test->isTestMethod()) {
            return '';
        }
        assert($test instanceof TestMethod);
        return sprintf('%s%s:%d%s', PHP_EOL, $test->file(), $test->line(), PHP_EOL);
    }
    private function reasonMessage(ConsideredRisky|DeprecationTriggered|ErrorTriggered|NoticeTriggered|PhpDeprecationTriggered|PhpNoticeTriggered|PhpunitDeprecationTriggered|PhpunitErrorTriggered|PhpunitWarningTriggered|PhpWarningTriggered|WarningTriggered $reason, bool $single) : string {
        $message = trim($reason->message());
        if ($single) {
            return $message . PHP_EOL;
        }
        $lines = explode(PHP_EOL, $message);
        $buffer = '* ' . $lines[0] . PHP_EOL;
        if (count($lines) > 1) {
            foreach (range(1, count($lines) - 1) as $line) {
                $buffer .= '  ' . $lines[$line] . PHP_EOL;
            }
        }
        return $buffer;
    }
    private function reasonLocation(ConsideredRisky|DeprecationTriggered|ErrorTriggered|NoticeTriggered|PhpDeprecationTriggered|PhpNoticeTriggered|PhpunitDeprecationTriggered|PhpunitErrorTriggered|PhpunitWarningTriggered|PhpWarningTriggered|WarningTriggered $reason, bool $single) : string {
        if (!$reason instanceof DeprecationTriggered && !$reason instanceof PhpDeprecationTriggered && !$reason instanceof ErrorTriggered && !$reason instanceof NoticeTriggered && !$reason instanceof PhpNoticeTriggered && !$reason instanceof WarningTriggered && !$reason instanceof PhpWarningTriggered) {
            return '';
        }
        return sprintf('%s%s:%d%s', $single ? '' : '  ', $reason->file(), $reason->line(), PHP_EOL);
    }

}