<?php

/*
 * This file is part of the Behat.
 * (c) Konstantin Kudryashov <ever.zet@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Behat\Behat\Output\Node\EventListener\AST;

use Behat\Behat\EventDispatcher\Event\AfterOutlineTested;
use Behat\Behat\EventDispatcher\Event\AfterScenarioSetup;
use Behat\Behat\EventDispatcher\Event\AfterScenarioTested;
use Behat\Behat\EventDispatcher\Event\AfterStepSetup;
use Behat\Behat\EventDispatcher\Event\AfterStepTested;
use Behat\Behat\EventDispatcher\Event\BeforeOutlineTested;
use Behat\Behat\EventDispatcher\Event\ExampleTested;
use Behat\Behat\Output\Node\Printer\ExamplePrinter;
use Behat\Behat\Output\Node\Printer\OutlinePrinter;
use Behat\Behat\Output\Node\Printer\SetupPrinter;
use Behat\Behat\Output\Node\Printer\StepPrinter;
use Behat\Gherkin\Node\ExampleNode;
use Behat\Testwork\Event\Event;
use Behat\Testwork\Output\Formatter;
use Behat\Testwork\Output\Node\EventListener\EventListener;

/**
 * Listens to expanded outline events and calls appropriate printers.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
final class OutlineListener implements EventListener
{
    /**
     * @var OutlinePrinter
     */
    private $outlinePrinter;
    /**
     * @var ExamplePrinter
     */
    private $examplePrinter;
    /**
     * @var StepPrinter
     */
    private $stepPrinter;
    /**
     * @var SetupPrinter
     */
    private $stepSetupPrinter;
    /**
     * @var SetupPrinter
     */
    private $exampleSetupPrinter;
    /**
     * @var ExampleNode
     */
    private $example;

    /**
     * Initializes listener.
     *
     * @param OutlinePrinter $outlinePrinter
     * @param ExamplePrinter $examplePrinter
     * @param StepPrinter    $stepPrinter
     * @param SetupPrinter   $exampleSetupPrinter
     * @param SetupPrinter   $stepSetupPrinter
     */
    public function __construct(
        OutlinePrinter $outlinePrinter,
        ExamplePrinter $examplePrinter,
        StepPrinter $stepPrinter,
        SetupPrinter $exampleSetupPrinter,
        SetupPrinter $stepSetupPrinter
    ) {
        $this->outlinePrinter = $outlinePrinter;
        $this->examplePrinter = $examplePrinter;
        $this->stepPrinter = $stepPrinter;
        $this->exampleSetupPrinter = $exampleSetupPrinter;
        $this->stepSetupPrinter = $stepSetupPrinter;
    }

    /**
     * {@inheritdoc}
     */
    public function listenEvent(Formatter $formatter, Event $event, $eventName)
    {
        $this->printAndCaptureOutlineHeaderOnBeforeEvent($formatter, $event);
        $this->printAndForgetOutlineFooterOnAfterEvent($formatter, $event);
        $this->printExampleHeaderOnBeforeExampleEvent($formatter, $event);
        $this->printExampleFooterOnAfterExampleEvent($formatter, $event, $eventName);
        $this->printStepSetupOnBeforeStepEvent($formatter, $event);
        $this->printStepOnAfterStepEvent($formatter, $event);
    }

    /**
     * Prints outline header and captures outline into ivar on BEFORE event.
     *
     * @param Formatter $formatter
     * @param Event     $event
     */
    private function printAndCaptureOutlineHeaderOnBeforeEvent(Formatter $formatter, Event $event)
    {
        if (!$event instanceof BeforeOutlineTested) {
            return;
        }

        $this->outlinePrinter->printHeader($formatter, $event->getFeature(), $event->getOutline());
    }

    /**
     * Prints outline footer and removes outline from ivar on AFTER event.
     *
     * @param Formatter $formatter
     * @param Event     $event
     */
    private function printAndForgetOutlineFooterOnAfterEvent(Formatter $formatter, Event $event)
    {
        if (!$event instanceof AfterOutlineTested) {
            return;
        }

        $this->outlinePrinter->printFooter($formatter, $event->getTestResult());
    }

    /**
     * Prints example header on example BEFORE event.
     *
     * @param Formatter $formatter
     * @param Event     $event
     */
    private function printExampleHeaderOnBeforeExampleEvent(Formatter $formatter, Event $event)
    {
        if (!$event instanceof AfterScenarioSetup) {
            return;
        }

        $this->example = $event->getScenario();

        $this->exampleSetupPrinter->printSetup($formatter, $event->getSetup());
        $this->examplePrinter->printHeader($formatter, $event->getFeature(), $this->example);
    }

    /**
     * Prints example footer on example AFTER event.
     *
     * @param Formatter $formatter
     * @param Event     $event
     * @param string    $eventName
     */
    private function printExampleFooterOnAfterExampleEvent(Formatter $formatter, Event $event, $eventName)
    {
        if (!$event instanceof AfterScenarioTested || ExampleTested::AFTER !== $eventName) {
            return;
        }

        $this->examplePrinter->printFooter($formatter, $event->getTestResult());
        $this->exampleSetupPrinter->printTeardown($formatter, $event->getTeardown());

        $this->example = null;
    }

    /**
     * Prints step setup on step BEFORE event.
     *
     * @param Formatter $formatter
     * @param Event     $event
     */
    private function printStepSetupOnBeforeStepEvent(Formatter $formatter, Event $event)
    {
        if (!$event instanceof AfterStepSetup) {
            return;
        }

        $this->stepSetupPrinter->printSetup($formatter, $event->getSetup());
    }

    /**
     * Prints example step on step AFTER event.
     *
     * @param Formatter $formatter
     * @param Event     $event
     */
    private function printStepOnAfterStepEvent(Formatter $formatter, Event $event)
    {
        if (!$event instanceof AfterStepTested) {
            return;
        }

        $this->stepPrinter->printStep($formatter, $this->example, $event->getStep(), $event->getTestResult());
        $this->stepSetupPrinter->printTeardown($formatter, $event->getTeardown());
    }
}