<?php

return [

    /**
     * What attributes do we use to build the slug?
     * This can be a single field, like "name" which will build a slug from:
     *
     *     $model->name;
     *
     * Or it can be an array of fields, like ("name", "company"), which builds a slug from:
     *
     *     $model->name . ' ' . $model->company;
     *
     * If you've defined custom getters in your model, you can use those too,
     * since Eloquent will call them when you request a custom attribute.
     *
     * Defaults to null, which uses the toString() method on your model.
     */

    'source' => null,

    /**
     * The maximum length of a generated slug.  Defaults to "null", which means
     * no length restrictions are enforced.  Set it to a positive integer if you
     * want to make sure your slugs aren't too long.
     */

    'maxLength' => null,

    /**
     * If you are setting a maximum length on your slugs, you may not want the
     * truncated string to split a word in half.  The default setting of "true"
     * will ensure this, e.g. with a maxLength of 12:
     *
     *   "my source string" -> "my-source"
     *
     * Setting it to "false" will simply truncate the generated slug at the
     * desired length, e.g.:
     *
     *   "my source string" -> "my-source-st"
     */

    'maxLengthKeepWords' => true,

    /**
     * If left to "null", then use the cocur/slugify package to generate the slug
     * (with the separator defined below).
     *
     * Set this to a closure that accepts two parameters (string and separator)
     * to define a custom slugger.  e.g.:
     *
     *    'method' => function( $string, $sep ) {
     *       return preg_replace('/[^a-z]+/i', $sep, $string);
     *    },
     *
     * Otherwise, this will be treated as a callable to be used.  e.g.:
     *
     *    'method' => array('Str','slug'),
     */

    'method' =>  function($string, $separator = '-')
    {
        $_transliteration = array(
            '/ä|æ|ǽ/' => 'ae',
            '/ö|œ/' => 'oe',
            '/ü/' => 'ue',
            '/Ä/' => 'Ae',
            '/Ü/' => 'Ue',
            '/Ö/' => 'Oe',
            '/À|Á|Â|Ã|Å|Ǻ|Ā|Ă|Ą|Ǎ/' => 'A',
            '/à|á|â|ã|å|ǻ|ā|ă|ą|ǎ|ª/' => 'a',
            '/Ç|Ć|Ĉ|Ċ|Č/' => 'C',
            '/ç|ć|ĉ|ċ|č/' => 'c',
            '/Ð|Ď|Đ/' => 'D',
            '/ð|ď|đ/' => 'd',
            '/È|É|Ê|Ë|Ē|Ĕ|Ė|Ę|Ě/' => 'E',
            '/è|é|ê|ë|ē|ĕ|ė|ę|ě/' => 'e',
            '/Ĝ|Ğ|Ġ|Ģ/' => 'G',
            '/ĝ|ğ|ġ|ģ/' => 'g',
            '/Ĥ|Ħ/' => 'H',
            '/ĥ|ħ/' => 'h',
            '/Ì|Í|Î|Ï|Ĩ|Ī|Ĭ|Ǐ|Į|İ/' => 'I',
            '/ì|í|î|ï|ĩ|ī|ĭ|ǐ|į|ı/' => 'i',
            '/Ĵ/' => 'J',
            '/ĵ/' => 'j',
            '/Ķ/' => 'K',
            '/ķ/' => 'k',
            '/Ĺ|Ļ|Ľ|Ŀ|Ł/' => 'L',
            '/ĺ|ļ|ľ|ŀ|ł/' => 'l',
            '/Ñ|Ń|Ņ|Ň/' => 'N',
            '/ñ|ń|ņ|ň|ŉ/' => 'n',
            '/Ò|Ó|Ô|Õ|Ō|Ŏ|Ǒ|Ő|Ơ|Ø|Ǿ/' => 'O',
            '/ò|ó|ô|õ|ō|ŏ|ǒ|ő|ơ|ø|ǿ|º/' => 'o',
            '/Ŕ|Ŗ|Ř/' => 'R',
            '/ŕ|ŗ|ř/' => 'r',
            '/Ś|Ŝ|Ş|Ș|Š/' => 'S',
            '/ś|ŝ|ş|ș|š|ſ/' => 's',
            '/Ţ|Ț|Ť|Ŧ/' => 'T',
            '/ţ|ț|ť|ŧ/' => 't',
            '/Ù|Ú|Û|Ũ|Ū|Ŭ|Ů|Ű|Ų|Ư|Ǔ|Ǖ|Ǘ|Ǚ|Ǜ/' => 'U',
            '/ù|ú|û|ũ|ū|ŭ|ů|ű|ų|ư|ǔ|ǖ|ǘ|ǚ|ǜ/' => 'u',
            '/Ý|Ÿ|Ŷ/' => 'Y',
            '/ý|ÿ|ŷ/' => 'y',
            '/Ŵ/' => 'W',
            '/ŵ/' => 'w',
            '/Ź|Ż|Ž/' => 'Z',
            '/ź|ż|ž/' => 'z',
            '/Æ|Ǽ/' => 'AE',
            '/ß/' => 'ss',
            '/Ĳ/' => 'IJ',
            '/ĳ/' => 'ij',
            '/Œ/' => 'OE',
            '/ƒ/' => 'f'
        );


        $quotedReplacement = preg_quote($separator, '/');

        $merge = array(
            '/[^\s\p{Zs}\p{Ll}\p{Lm}\p{Lo}\p{Lt}\p{Lu}\p{Nd}]/mu' => ' ',
            '/[\s\p{Zs}]+/mu' => $separator,
            sprintf('/^[%s]+|[%s]+$/', $quotedReplacement, $quotedReplacement) => '',
        );

        $map = $_transliteration + $merge;
        unset($_transliteration);

        return mb_strtolower(preg_replace(array_keys($map), array_values($map), $string));
    },

    /**
     * Separator to use when generating slugs.  Defaults to a hyphen.
     */

    'separator' => '-',

    /**
     * Enforce uniqueness of slugs?  Defaults to true.
     * If a generated slug already exists, an incremental numeric
     * value will be appended to the end until a unique slug is found.  e.g.:
     *
     *     my-slug
     *     my-slug-1
     *     my-slug-2
     */

    'unique' => true,

    /**
     * If you are enforcing unique slugs, the default is to add an
     * incremental value to the end of the base slug.  Alternatively, you
     * can change this value to a closure that accepts three parameters:
     * the base slug, the separator, and a Collection of the other
     * "similar" slugs.  The closure should return the new unique
     * suffix to append to the slug.
     */

    'uniqueSuffix' => null,

    /**
     * Should we include the trashed items when generating a unique slug?
     * This only applies if the softDelete property is set for the Eloquent model.
     * If set to "false", then a new slug could duplicate one that exists on a trashed model.
     * If set to "true", then uniqueness is enforced across trashed and existing models.
     */

    'includeTrashed' => false,

    /**
     * An array of slug names that can never be used for this model,
     * e.g. to prevent collisions with existing routes or controller methods, etc..
     * Defaults to null (i.e. no reserved names).
     * Can be a static array, e.g.:
     *
     *    'reserved' => array('add', 'delete'),
     *
     * or a closure that returns an array of reserved names.
     * If using a closure, it will accept one parameter: the model itself, and should
     * return an array of reserved names, or null. e.g.
     *
     *    'reserved' => function( Model $model) {
     *      return $model->some_method_that_returns_an_array();
     *    }
     *
     * In the case of a slug that gets generated with one of these reserved names,
     * we will do:
     *
     *    $slug .= $separator + "1"
     *
     * and continue from there.
     */

    'reserved' => null,

    /**
     * Whether to update the slug value when a model is being
     * re-saved (i.e. already exists).  Defaults to false, which
     * means slugs are not updated.
     *
     * Be careful! If you are using slugs to generate URLs, then
     * updating your slug automatically might change your URLs which
     * is probably not a good idea from an SEO point of view.
     * Only set this to true if you understand the possible consequences.
     */

    'onUpdate' => false,

];