<?php
/**
 * Request.php
 * Copyright (c) 2017 thegrumpydictator@gmail.com
 *
 * This file is part of Firefly III.
 *
 * Firefly III is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Firefly III is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
 */
declare(strict_types=1);

namespace FireflyIII\Http\Requests;

use Carbon\Carbon;
use Carbon\Exceptions\InvalidDateException;
use Exception;
use Illuminate\Foundation\Http\FormRequest;
use Log;

/**
 * Class Request.
 *
 * @codeCoverageIgnore
 *
 * @SuppressWarnings(PHPMD.NumberOfChildren)
 */
class Request extends FormRequest
{
    /**
     * @param $array
     *
     * @return array|null
     */
    public function arrayFromValue($array): ?array
    {
        if (is_array($array)) {
            return $array;
        }
        if (null === $array) {
            return null;
        }
        if (is_string($array)) {
            return explode(',', $array);
        }

        return null;
    }

    /**
     * Return a boolean value.
     *
     * @param string $field
     *
     * @return bool
     */
    public function boolean(string $field): bool
    {
        if ('true' === (string)$this->input($field)) {
            return true;
        }
        if ('false' === (string)$this->input($field)) {
            return false;
        }

        return 1 === (int)$this->input($field);
    }

    /**
     * @param string $value
     *
     * @return bool
     */
    public function convertBoolean(?string $value): bool
    {
        if (null === $value) {
            return false;
        }
        if ('true' === $value) {
            return true;
        }
        if ('yes' === $value) {
            return true;
        }
        if (1 === $value) {
            return true;
        }
        if ('1' === $value) {
            return true;
        }
        if (true === $value) {
            return true;
        }

        return false;
    }

    /**
     * @param string|null $string
     *
     * @return Carbon|null
     */
    public function dateFromValue(?string $string): ?Carbon
    {
        if (null === $string) {
            return null;
        }
        if ('' === $string) {
            return null;
        }
        try {
            $carbon = new Carbon($string);
        } catch (Exception $e) {
            Log::debug(sprintf('Invalid date: %s: %s', $string, $e->getMessage()));

            return null;
        }

        return $carbon;
    }

    /**
     * Return floating value.
     *
     * @param string $field
     *
     * @return float|null
     */
    public function float(string $field): ?float
    {
        $res = $this->get($field);
        if (null === $res) {
            return null;
        }

        return (float)$res;
    }

    /**
     * Return integer value.
     *
     * @param string $field
     *
     * @return int
     */
    public function integer(string $field): int
    {
        return (int)$this->get($field);
    }

    /**
     * Parse to integer
     *
     * @param string|null $string
     *
     * @return int|null
     */
    public function integerFromValue(?string $string): ?int
    {
        if (null === $string) {
            return null;
        }
        if ('' === $string) {
            return null;
        }

        return (int)$string;
    }

    /**
     * Return string value.
     *
     * @param string $field
     *
     * @return string
     *
     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
     */
    public function string(string $field): string
    {
        return app('steam')->cleanString((string)($this->get($field) ?? ''));
    }

    /**
     * Parse and clean a string.
     *
     * @param string|null $string
     *
     * @return string|null
     */
    public function stringFromValue(?string $string): ?string
    {
        if (null === $string) {
            return null;
        }
        $result = app('steam')->cleanString($string);

        return '' === $result ? null : $result;

    }

    /**
     * Return date or NULL.
     *
     * @param string $field
     *
     * @return Carbon|null
     */
    protected function date(string $field): ?Carbon
    {
        $result = null;
        try {
            $result = $this->get($field) ? new Carbon($this->get($field)) : null;
        } catch (Exception $e) {
            Log::debug(sprintf('Exception when parsing date. Not interesting: %s', $e->getMessage()));
        }

        return $result;
    }

    /**
     * Return date time or NULL.
     *
     * @param string $field
     *
     * @return Carbon|null
     */
    protected function dateTime(string $field): ?Carbon
    {
        if (null === $this->get($field)) {
            return null;
        }
        $value = (string)$this->get($field);
        if (10 === strlen($value)) {
            // probably a date format.
            try {
                $result = Carbon::createFromFormat('Y-m-d', $value);
            } catch (InvalidDateException $e) {
                Log::error(sprintf('"%s" is not a valid date: %s', $value, $e->getMessage()));

                return null;
            }

            return $result;
        }
        // is an atom string, I hope?
        try {
            $result = Carbon::parse($value);
        } catch (InvalidDateException $e) {
            Log::error(sprintf('"%s" is not a valid date or time: %s', $value, $e->getMessage()));

            return null;
        }

        return $result;
    }

}