<?php


namespace App\Traits;


use App\PrintPartImage;
use Endroid\QrCode\QrCode;
use Illuminate\Support\Facades\File;
use Illuminate\Support\Str;
use Intervention\Image\Facades\Image;
use Picqer\Barcode\BarcodeGeneratorJPG;

trait DrawImage
{
    public function draw($orderPackage, $template, $img = null)
    {
        if (!$img) $img = $this->getBgImg($template);
        if (!$template) return $img;

        $items = array_filter($template->value, function ($item) {
            return $item['type'] != 'bg';
        });

        $array = array_filter($template->value, function ($item) {
            return $item['type'] == 'bg';
        });
        $array = array_shift($array);

        // 按照模型比列修改image
        $items = (function () use ($items, $img, $array) {
            $heightScale = $img->getHeight() / $array['height'];
            $weightScale = $img->getWidth() / $array['width'];
//            foreach ($items as $key => &$item) {
            foreach ($items as  &$item) {
                if (array_key_exists('width', $item)) $item['width'] = intval($weightScale * floatval($item['width']));
                if (array_key_exists('height', $item)) $item['height'] = intval($heightScale * floatval($item['height']));
                if (array_key_exists('left', $item)) $item['left'] = intval($weightScale * floatval($item['left']));
                if (array_key_exists('top', $item)) $item['top'] = intval($heightScale * floatval($item['top']));
                if (array_key_exists('font-size', $item)) $item['font-size'] = intval($heightScale * floatval($item['font-size']));
                if (array_key_exists('border-width', $item)) $item['border-width'] = intval($heightScale * floatval($item['border-width']));
                $item['heightScale'] = $heightScale;
                $item['weightScale'] = $weightScale;
            }
            return $items;
        })();

        // 根据下标排序
        usort($items, function ($a, $b) {
            return $a['z_index'] > $b['z_index'] ? 1 : -1;
        });

        foreach ($items as $item) {
            switch ($item['type']) {
                case 'textBox':
                    $this->setTextBox($img, $item, $orderPackage);
                    break;
                case 'image':
                    $this->setImage($img, $item);
                    break;
                case 'qRCode':
                    $this->setQRCode($img, $item, $orderPackage);
                    break;
                case 'stripeCode':
                    $this->setStripeCode($img, $item, $orderPackage);
                    break;
                default:
                    break;
            }
        }
        return $img;
    }

    private function getBgImg($template): \Intervention\Image\Image
    {
        $bg = array_filter($template->value, function ($item) {
            return $item['type'] == 'bg';
        });

        $values = array_shift($bg);

        return Image::canvas($values['width'], $values['height'], '#fff');
    }

    public function setTextBox($image, $params, $orderPackages): \Intervention\Image\Image
    {
        $text = $this->getValue($params, $orderPackages);
        $bgImage = Image::canvas($params['width'], $params['height'], '#000');

        $img = $this->getTextBox($params, $text);
        $bgImage = $bgImage->insert($img, 'top-left', $params['border-width'], $params['border-width']);

        return $image->insert($bgImage, 'top-left', $params['left'] ?? 0, $params['top'] ?? 0);
    }

    public function setStripeCode($img, $params, $orderPackages)
    {
        $code = $this->getValue($params, $orderPackages);

        $bgImage = Image::canvas(404, 92, '#fff');

        $item = [
            'width' => 404, 'height' => 20,
            'justify-content' => 'center', 'align-items' => 'center',
            'text' => $code, 'border-width' => 0,
            'top' => 58, 'left' => 0, 'font-size' => 20
        ];

        $textBox = $this->getTextBox($item, $code);

        $bgImage->insert($textBox, 'top-left', 0, 68);

        $generatorPng = new BarcodeGeneratorJPG();

        $barCode = $generatorPng->getBarcode($code, $generatorPng::TYPE_CODE_128_A, 1, 50);

        $stripeCode = Image::make($barCode)->resize(382, 50);

        $stripeCode_weight = 404 * $params['scale'] * $params['weightScale'];
        $stripeCode_height = 92 * $params['scale'] * $params['heightScale'];

        $bgImage->insert($stripeCode, 'top-left', 6, 9)->resize($stripeCode_weight, $stripeCode_height);

        $left = $params['left'] + ((404 * (1- $params['scale'])) * $params['weightScale']) / 2;
        $top = $params['top'] + ((92 * (1-$params['scale']))  * $params['heightScale']) / 2;

        return $img->insert($bgImage, 'top-left', intval($left), intval($top));
    }

    public function setImage($img, $params)
    {
        $printPartImage = PrintPartImage::query()->where('name', $params['text'])->first();
        $path = ['app', 'public'];
        $path = join(DIRECTORY_SEPARATOR, $path);
        $dirPath = storage_path($path);
        $uri = $printPartImage->file['url'];
        $uri = str_replace('/', DIRECTORY_SEPARATOR, $uri);
        $path = $dirPath . $uri . '.' . $printPartImage->file['type'];
        $image = Image::make(File::get($path));
        $image->resize($params['width'], $params['height']);
        $img->insert($image, 'top-left', $params['left'], $params['top']);
        return $img;
    }

    public function getTextBox($params, $text): \Intervention\Image\Image
    {

        $bgImg = Image::canvas($params['width'], $params['height'], '#fff');

        if ($params['border-width'] !== 0) {
            $borderWidth = $params['border-width'] * 2;
            $paddingBgImage = Image::canvas($params['width'], $params['height'], '#000');
            $paddingImage = Image::canvas($params['width'] - $borderWidth, $params['height'] - $borderWidth, '#fff');
            $paddingBgImage->insert($paddingImage, 'top-left', intval($params['border-width'] / 2), intval($params['border-width'] / 2));
            $bgImg->insert($paddingBgImage);
        }
        $path_arr = ['fonts', 'simsun.ttc'];
        $x = $params['width'] / 2;
        if ($params['justify-content'] == 'center') $x = $params['width'] / 2;
        if ($params['justify-content'] == 'flex-start') $x = $params['width'] / 2;
        $y = $params['height'] / 2;
        if ($params['align-items'] == 'center') $y = $params['height'] / 2;
        if ($params['align-items'] == 'flex-start') $y = 0;
        if ($params['align-items'] == 'flex-end') $y = ($params['height'] - 22) / 2;

        // 字体路径
        $path = app('path.public') . (DIRECTORY_SEPARATOR . join(DIRECTORY_SEPARATOR, $path_arr));
        $aligns = [
            'flex-start' => 'right',
            'center' => 'center'
        ];
        $vAligns = [
            'center' => 'center',
            'flex-start' => 'top',
            'flex-end' => 'bottom',
        ];
        return $bgImg->text($text, intval($x), intval($y), function ($font) use ($params, $path, $aligns, $vAligns) {
            $font->file($path);
            $font->size($params['font-size'] ?? 24);
            $font->align($aligns[$params['justify-content']]); // 水平对齐方式
            // center
            // right
            $font->valign($vAligns[$params['align-items']]);    // 垂直对齐方式
            // center
            // middle
            // top
            // bottom
        });
    }

    public function setQRCode($img, $params, $orderPackages)
    {

        $text = $this->getValue($params, $orderPackages);
        $qrCode = new QrCode($text);
        $qrCode->setSize(100);
        $qrCode->setMargin(0);
        $scale = $params['scale'] ?? 1;
        return $img->insert(Image::make($qrCode->writeString())->resize(100 * $scale * $params['weightScale'], 100 * $scale * $params['heightScale']), 'top-left', $params['left'], $params['top']);
    }

    // 获取图片
    public function getImage($base64, &$path): \Intervention\Image\Image
    {
        $path = $this->getImagePath();
        $img = Image::make($base64);
        $img->save($path);          // 图片保存
        return $img;
    }

    // 获取打印图片的路径
    private function getImagePath(): string
    {
        $img_name = Str::uuid() . '.jpg';
        $path_arr = ['app', 'public', 'print'];
        $dir_path = implode(DIRECTORY_SEPARATOR, $path_arr);
        if (!file_exists(storage_path($dir_path))) mkdir(storage_path($dir_path));

        $path_arr[] = 'image';
        $dir_path = implode(DIRECTORY_SEPARATOR, $path_arr);
        if (!file_exists(storage_path($dir_path))) mkdir(storage_path($dir_path));

        $path_arr[] = $img_name;

        return storage_path(implode(DIRECTORY_SEPARATOR, $path_arr));
    }

    // 保存至保存图片路径下
    public function saveImage($image, &$path)
    {
        $path = $this->getImagePath();
        $image->save($path);          // 图片保存
    }

    // 根据图片路径读取而base64编码的图片
    public function readImageBase64($path): string
    {
        if ($fp = fopen($path, "rp", 0)) {
            $gambar = fread($fp, filesize($path));
            fclose($fp);
            return chunk_split(base64_encode($gambar));
        }
        return "";
    }

    // 通过设置获取所需参数
    private function getValue($params, $orderPackage = [], $k = 'text'): string
    {
        $key = strtolower($params[$k]);
        if ($value = strstr($key, '$')) return $orderPackage[ltrim($value, '$')] ?? '';
        else return $params[$k];
    }

}