<?php

declare(strict_types=1);

namespace App\Lib\Helpers;

use App\Exceptions\Helpers\UnsupportedStructureConversionException;
use Illuminate\Support\Facades\File;
use Illuminate\Support\Facades\Storage;

abstract class ToolboxHelperCore
{
    /**
     * Multibyte-safe str_replace with unified dispatch.
     *
     * Returns false when $replace is an array but $search is a scalar string.
     *
     * @param  array<string>|string  $search
     * @param  array<string>|string  $replace
     * @param  array<int|string, mixed>|string  $subject
     * @return array<int|string, mixed>|string|false
     */
    public static function mbReplace(
        array | string $search,
        array | string $replace,
        array | string $subject,
        int &$count = 0,
    ): array | string | false {
        if (is_array($subject)) {
            return self::mbReplaceInArraySubject($search, $replace, $subject, $count);
        }

        return self::mbReplaceScalar($search, $replace, $subject, $count);
    }

    /**
     * Dispatch for scalar subject.
     * Returns false when $replace is array but $search is a scalar string.
     *
     * @param  array<string>|string  $search
     * @param  array<string>|string  $replace
     */
    private static function mbReplaceScalar(
        array | string $search,
        array | string $replace,
        string $subject,
        int &$count = 0,
    ): string | false {
        if (! is_array($search) && is_array($replace)) {
            return false;
        }

        if (is_array($search)) {
            return self::mbReplaceWithSearchArray($search, $replace, $subject, $count);
        }

        if (! is_string($replace)) {
            throw new \InvalidArgumentException('Replace must be a string when search is a string.');
        }

        return self::mbReplaceSingle($search, $replace, $subject, $count);
    }

    /**
     * @param  string[]|string  $search
     * @param  string[]|string  $replace
     * @param  array<int|string, mixed>  $subject
     * @return array<int|string, mixed>
     */
    public static function mbReplaceInArraySubject(array | string $search, array | string $replace, array $subject, int &$count = 0): array
    {
        foreach ($subject as &$value) {
            if (is_array($value)) {
                $value = self::mbReplaceInArraySubject($search, $replace, $value, $count);
            } elseif (is_array($search) && is_string($value)) {
                $value = self::mbReplaceWithSearchArray($search, $replace, $value, $count);
            } elseif (! is_array($replace) && is_string($value)) {
                $value = self::mbReplaceSingle($search, $replace, $value, $count);
            }
        }
        unset($value);

        return $subject;
    }

    /**
     * @param  string[]  $search
     * @param  array<string>|string  $replace
     */
    public static function mbReplaceWithSearchArray(array $search, array | string $replace, string $subject, int &$count = 0): string
    {
        if (! is_array($replace)) {
            foreach ($search as $searchItem) {
                $subject = (string) self::mbReplaceSingle($searchItem, $replace, $subject, $count);
            }

            return $subject;
        }

        $iterations  = max(count($search), count($replace));
        $searchItem  = reset($search);
        $replaceItem = reset($replace);

        while ($iterations--) {
            $subject     = (string) self::mbReplaceSingle((string) $searchItem, (string) $replaceItem, $subject, $count);
            $searchItem  = next($search);
            $replaceItem = next($replace);
        }

        return $subject;
    }

    public static function mbReplaceSingle(string $search, string $replace, string $subject, int &$count = 0): string
    {
        $parts = mb_split(preg_quote($search), $subject) ?: [];
        $count = count($parts) - 1;

        return implode($replace, $parts);
    }

    /**
     * Convert deeply an object to array
     *
     * @return array<int|string,mixed>
     *
     * @throws \App\Exceptions\Helpers\UnsupportedStructureConversionException If $input var is a scalar value.
     */
    public static function objectToArray(mixed $input): array
    {
        if (! (is_object($input) || is_array($input))) {
            throw UnsupportedStructureConversionException::fromType($input);
        }

        $ret = (array) $input;
        foreach ($ret as &$item) {
            $item = (is_object($item) || is_array($item)) ? self::objectToArray($item) : $item;
        }

        return $ret;
    }

    /**
     * Convert deeply an array to object
     *
     * @throws \App\Exceptions\Helpers\UnsupportedStructureConversionException If $input var is a scalar value.
     */
    public static function arrayToObject(mixed $input): object
    {
        if (! (is_object($input) || is_array($input))) {
            throw UnsupportedStructureConversionException::fromType($input);
        }

        $ret      = (object) $input;
        $retArray = (array) $ret;
        foreach ($retArray as &$item) {
            $item = (is_object($item) || is_array($item)) ? self::arrayToObject($item) : $item;
        }
        unset($item);

        return (object) $retArray;
    }

    /**
     * Get the file full path
     */
    protected static function getUploadedFileFullPath(string $value, bool $useStorage): string
    {
        /** @var \Illuminate\Filesystem\FilesystemAdapter */
        $disk = Storage::disk();

        if ($useStorage) {
            return $disk->path($value);
        }

        return realpath($value) ?: $value;
    }

    /**
     * Get the file mimetype
     *
     * @return string|false
     */
    protected static function getUploadedFileMimeType(string $value, bool $useStorage)
    {
        if ($useStorage) {
            return Storage::mimeType($value);
        }

        return File::mimeType($value);
    }
}