<?php

namespace SilverStripe\Dev\Constraint;

use PHPUnit_Framework_Constraint;
use PHPUnit_Framework_ExpectationFailedException;
use PHPUnit\Framework\Constraint\Constraint;
use PHPUnit\Framework\ExpectationFailedException;
use SilverStripe\Dev\SSListExporter;
use SilverStripe\Dev\TestOnly;
use SilverStripe\ORM\SS_List;
use SilverStripe\View\ViewableData;

/* -------------------------------------------------
 *
 * This version of SSListContains is for phpunit 9
 * The phpunit 5 version is lower down in this file
 * phpunit 6, 7 and 8 are not supported
 *
 * @see SilverStripe\Dev\SapphireTest
 *
 * -------------------------------------------------
 */

if (class_exists(Constraint::class)) {

    /**
     * Constraint for checking if a SS_List contains items matching the given
     * key-value pairs.
     */
    // Ignore multiple classes in same file
    // @codingStandardsIgnoreStart
    class SSListContains extends Constraint implements TestOnly
    {
        // @codingStandardsIgnoreEnd
        /**
         * @var array
         */
        protected $matches = [];

        /**
         * Check if the list has left over items that don't match
         *
         * @var bool
         */
        protected $hasLeftoverItems = false;

        public function __construct(array $matches)
        {
            $this->exporter = new SSListExporter();

            $this->matches = $matches;
        }

        /**
         * Evaluates the constraint for parameter $other
         *
         * If $returnResult is set to false (the default), an exception is thrown
         * in case of a failure. null is returned otherwise.
         *
         * If $returnResult is true, the result of the evaluation is returned as
         * a boolean value instead: true in case of success, false in case of a
         * failure.
         *
         * @param SS_List $other Value or object to evaluate.
         * @param string $description Additional information about the test
         * @param bool $returnResult Whether to return a result or throw an exception
         *
         * @return null|bool
         *
         * @throws PHPUnit_Framework_ExpectationFailedException
         */
        public function evaluate($other, $description = '', $returnResult = false): ?bool
        {
            $success = true;

            foreach ($other as $item) {
                $this->checkIfItemEvaluatesRemainingMatches($item);
            }

            //we have remaining matches?
            if (count($this->matches) !== 0) {
                $success = false;
                $this->hasLeftoverItems = true;
            }

            if ($returnResult) {
                return $success;
            }

            if (!$success) {
                $this->fail($other, $description);
            }

            return null;
        }

        /**
         * @param ViewableData $item
         * @return bool
         */
        protected function checkIfItemEvaluatesRemainingMatches(ViewableData $item): bool
        {
            $success = false;
            foreach ($this->matches as $key => $match) {
                $constraint = new ViewableDataContains($match);

                if ($constraint->evaluate($item, '', true)) {
                    $success = true;
                    unset($this->matches[$key]);
                    break;
                }
            }

            return $success;
        }

        /**
         * Returns a string representation of the object.
         *
         * @return string
         */
        public function toString(): string
        {
            $matchToString = function ($key, $value) {
                return ' "' . $key . '" is "' . $value . '"';
            };

            $matchesToString = function ($matches) use ($matchToString) {
                $matchesAsString = implode(' and ', array_map(
                    $matchToString,
                    array_keys($matches),
                    array_values($matches)
                ));

                return '(' . $matchesAsString . ')';
            };

            $allMatchesAsString = implode(
                "\n or ",
                array_map($matchesToString, $this->matches)
            );


            return $this->getStubForToString() . $allMatchesAsString;
        }

        /**
         * @return string
         */
        protected function getStubForToString(): string
        {
            return ' contains an item matching ';
        }
    }
}

/* -------------------------------------------------
 *
 * This version of FunctionalTest is for phpunit 5
 * The phpunit 9 verison is at the top of this file
 *
 * -------------------------------------------------
 */

if (!class_exists(PHPUnit_Framework_Constraint::class)) {
    return;
}

/**
 * Constraint for checking if a SS_List contains items matching the given
 * key-value pairs.
 */
// Ignore multiple classes in same file
// @codingStandardsIgnoreStart
class SSListContains extends PHPUnit_Framework_Constraint implements TestOnly
{
    // @codingStandardsIgnoreEnd
    /**
     * @var array
     */
    protected $matches = [];

    /**
     * Check if the list has left over items that don't match
     *
     * @var bool
     */
    protected $hasLeftoverItems = false;

    public function __construct($matches)
    {
        $this->exporter = new SSListExporter();

        $this->matches = $matches;
    }

    /**
     * Evaluates the constraint for parameter $other
     *
     * If $returnResult is set to false (the default), an exception is thrown
     * in case of a failure. null is returned otherwise.
     *
     * If $returnResult is true, the result of the evaluation is returned as
     * a boolean value instead: true in case of success, false in case of a
     * failure.
     *
     * @param SS_List $other Value or object to evaluate.
     * @param string $description Additional information about the test
     * @param bool $returnResult Whether to return a result or throw an exception
     *
     * @return null|bool
     *
     * @throws ExpectationFailedException
     */
    public function evaluate($other, $description = '', $returnResult = false)
    {
        $success = true;

        foreach ($other as $item) {
            $this->checkIfItemEvaluatesRemainingMatches($item);
        }

        //we have remaining matches?
        if (count($this->matches) !== 0) {
            $success = false;
            $this->hasLeftoverItems = true;
        }

        if ($returnResult) {
            return $success;
        }

        if (!$success) {
            $this->fail($other, $description);
        }

        return null;
    }

    /**
     * @param ViewableData $item
     * @return bool
     */
    protected function checkIfItemEvaluatesRemainingMatches(ViewableData $item)
    {
        $success = false;
        foreach ($this->matches as $key => $match) {
            $constraint = new ViewableDataContains($match);

            if ($constraint->evaluate($item, '', true)) {
                $success = true;
                unset($this->matches[$key]);
                break;
            }
        }

        return $success;
    }

    /**
     * Returns a string representation of the object.
     *
     * @return string
     */
    public function toString()
    {
        $matchToString = function ($key, $value) {
            return ' "' . $key . '" is "' . $value . '"';
        };

        $matchesToString = function ($matches) use ($matchToString) {
            $matchesAsString = implode(' and ', array_map(
                $matchToString,
                array_keys($matches),
                array_values($matches)
            ));

            return '(' . $matchesAsString . ')';
        };

        $allMatchesAsString = implode(
            "\n or ",
            array_map($matchesToString, $this->matches)
        );


        return $this->getStubForToString() . $allMatchesAsString;
    }

    /**
     * @return string
     */
    protected function getStubForToString()
    {
        return ' contains an item matching ';
    }
}