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365 lines
12 KiB
PHP
365 lines
12 KiB
PHP
<?php
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class FlaschenpostBridge extends BridgeAbstract
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{
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const NAME = 'Flaschenpost Bridge';
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const URI = 'https://www.flaschenpost.de/';
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const DESCRIPTION = 'Aktuelle Angebote auf Flaschenpost.de';
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const MAINTAINER = 'sal0max';
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const CACHE_TIMEOUT = 3600; // 1 hour
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const PARAMETERS = [
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[
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'zip-code' => [
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'name' => 'Postleitzahl',
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'type' => 'text',
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'required' => true,
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'exampleValue' => '80333',
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// https://stackoverflow.com/a/7926743/421140
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'pattern' => '^(?!01000|99999)(0[1-9]\d{3}|[1-9]\d{4})$',
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],
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'water' => [
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'name' => 'Wasser',
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'type' => 'checkbox',
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],
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'beer' => [
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'name' => 'Bier',
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'type' => 'checkbox',
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],
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'lemonade' => [
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'name' => 'Limonade',
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'type' => 'checkbox',
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],
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'juice' => [
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'name' => 'Saft & Schorle',
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'type' => 'checkbox',
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],
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'wine' => [
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'name' => 'Wein & Mehr',
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'type' => 'checkbox',
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],
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'liquor' => [
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'name' => 'Spirituosen',
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'type' => 'checkbox',
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],
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'food' => [
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'name' => 'Lebensmittel',
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'type' => 'checkbox',
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],
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'household' => [
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'name' => 'Haushalt',
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'type' => 'checkbox',
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],
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]
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];
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public function collectData()
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{
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$categories = [];
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if ($this->getInput('water')) {
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array_push(
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$categories,
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'wasser/spritzig',
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'wasser/medium',
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'wasser/still',
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'wasser/aromatisiert',
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'wasser/heilwasser',
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'wasser/bio-wasser',
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'wasser/gourmet'
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);
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}
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if ($this->getInput('beer')) {
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array_push(
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$categories,
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'bier/alkoholfrei',
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'bier/biermischgetraenke',
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'bier/craft-beer',
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'bier/export-lager-maerzen',
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'bier/helles',
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'bier/internationale-biere',
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'bier/koelsch',
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'bier/land-kellerbier',
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'bier/malzbier',
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'bier/pils',
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'bier/radler',
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'bier/spezialitaeten',
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'bier/weizen-weissbier'
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);
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}
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if ($this->getInput('lemonade')) {
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array_push(
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$categories,
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'limonade/cola',
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'limonade/orangenlimonade',
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'limonade/zitronenlimonade',
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'limonade/cola-mix',
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'limonade/teegetraenke',
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'limonade/fassbrause',
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'limonade/mate',
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'limonade/bio',
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'limonade/zum-mixen',
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'limonade/sonstige-limos'
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);
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}
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if ($this->getInput('juice')) {
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array_push(
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$categories,
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'saft-und-schorle/apfelsaft',
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'saft-und-schorle/apfelschorle',
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'saft-und-schorle/orangensaft',
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'saft-und-schorle/multivitaminsaft',
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'saft-und-schorle/maracujasaft',
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'saft-und-schorle/traubensaft',
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'saft-und-schorle/johannisbeersaft',
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'saft-und-schorle/rhabarbersaft',
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'saft-und-schorle/rhabarberschorle',
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'saft-und-schorle/kirschsaft',
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'saft-und-schorle/sonstige-saefte',
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'saft-und-schorle/sonstige-schorlen'
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);
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}
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if ($this->getInput('wine')) {
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array_push(
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$categories,
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'wein-und-mehr/weisswein',
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'wein-und-mehr/rotwein',
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'wein-und-mehr/rose',
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'wein-und-mehr/bio-wein',
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'wein-und-mehr/sonstige-weine',
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'wein-und-mehr/sekt-mehr',
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'wein-und-mehr/probierpakete',
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'wein-und-mehr/gluehwein'
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);
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}
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if ($this->getInput('liquor')) {
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array_push(
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$categories,
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'spirituosen/wodka',
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'spirituosen/gin',
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'spirituosen/whisky',
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'spirituosen/rum',
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'spirituosen/weitere-spirituosen',
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'spirituosen/kraeuterlikoer',
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'spirituosen/weitere-likoere',
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'spirituosen/aperitif'
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);
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}
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if ($this->getInput('food')) {
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array_push(
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$categories,
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'lebensmittel/veggie-vegan',
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'lebensmittel/kaffee-tee',
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'lebensmittel/milch-alternativen',
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'lebensmittel/tiefkuehltruhe',
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'lebensmittel/nuesse-trockenobst',
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'lebensmittel/suesses-salziges',
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'lebensmittel/nudeln-reis-getreide',
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'lebensmittel/fertiges-konserven',
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'lebensmittel/sossen-oele-gewuerze'
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);
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}
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if ($this->getInput('household')) {
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array_push(
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$categories,
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'haushalt/hygieneartikel',
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'haushalt/gesundheit-verhuetung',
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'haushalt/kueche',
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'haushalt/haushaltsartikel',
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'haushalt/spuelen-reinigen',
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'haushalt/waschen'
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);
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}
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foreach ($categories as $category) {
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try {
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$url = sprintf('https://www.flaschenpost.de/%s?plz=%s', $category, $this->getInput('zip-code'));
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// Gives redirect on unknown zip-code
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$html = getSimpleHTMLDOM($url, [], [CURLOPT_FOLLOWLOCATION => false]);
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} catch (\Exception $e) {
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// skip
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continue;
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}
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// extract the JavaScript block which contains all the data we need
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$regex = '/(\{childElements:\[.*\})\];/';
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preg_match($regex, $html, $matches);
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$js = $matches[1];
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// convert JavaScript to JSON
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$js = $this->jsToJson($js);
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// get all products
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$json_decode = json_decode($js, false, 512, JSON_THROW_ON_ERROR);
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$products = $this->recursiveFind((array) $json_decode, 'products');
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foreach ($products as $product) {
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// there can be multiple variants, like 0.5l and 0.33l bottles
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foreach ($product->product->articles as $article) {
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$this->addArticle($article, $product->product);
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}
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}
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}
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}
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public function getName(): string
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{
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$categories = [];
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if ($this->getInput('water')) {
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$categories[] = 'Wasser';
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}
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if ($this->getInput('beer')) {
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$categories[] = 'Bier';
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}
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if ($this->getInput('lemonade')) {
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$categories[] = 'Limonade';
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}
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if ($this->getInput('juice')) {
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$categories[] = 'Saft & Schorle';
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}
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if ($this->getInput('wine')) {
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$categories[] = 'Wein & Mehr';
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}
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if ($this->getInput('liquor')) {
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$categories[] = 'Spirituosen';
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}
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if ($this->getInput('food')) {
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$categories[] = 'Lebensmittel';
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}
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if ($this->getInput('household')) {
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$categories[] = 'Haushalt';
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}
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if (empty($categories)) {
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return $this::NAME;
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} else {
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return $this::NAME . ' – ' . implode(', ', $categories);
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}
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}
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private function jsToJson(string $js): string
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{
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// remove all html
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$js = strip_tags($js);
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// escape double quotes
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$js = str_replace('"', '\\"', $js);
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// add double quotes to all keys
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$js = preg_replace('/(?<=[,{])(\w+)(?=:)/', '"$1"', $js);
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// replace all single quotes with double quotes at all values
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$js = str_replace('\'', '"', $js);
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// sometimes, there are more than one JSON blocks; we're interested in the first one
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$js = $this->splitJsonObjects($js)[0];
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return $js;
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}
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private function addArticle($article, $product)
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{
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$regularPrice = $article->trackingDefaultPrice;
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$discountPrice = $article->crossedPrice;
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$discount = round((($regularPrice - $discountPrice) / $regularPrice) * 100.0);
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$regularPriceString = $article->defaultPrice;
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$discountPriceString = $article->price;
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// only discounted products
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if ($regularPrice != $discountPrice) {
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$name = str_replace('"', '\'', $product->name);
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$imageUrl = 'https://image.flaschenpost.de/cdn-cgi/image/width=120,height=120,q=50/articles/small/'
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. $article->articleId . '.png';
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$pricePerUnit = str_replace(['(', ')'], '', $article->pricePerUnit);
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$deposit = $article->deposit ? "Pfand: $article->deposit" : 'Pfandfrei';
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$alcohol = $product->alcoholInfo ? str_replace(['enthält', 'Vol.-', 'Alkohol'], '', $product->alcoholInfo)
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. ' Alkohol' : '';
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$description = <<<EOD
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<div style="padding: 20px; display: flex;">
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<img src="{$imageUrl}" alt="{$name}" style="float: left; margin-right: 35px;"/>
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<p style="display: inline-block; align-self: center; line-height: 1.5rem;">
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$pricePerUnit
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<br>
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{$article->shortDescription}
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<br>
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$deposit
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<br>
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$alcohol
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</p>
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</div>
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EOD;
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$item['title'] = "$name: $discountPriceString statt $regularPriceString (-$discount\u{2009}%)";
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$item['content'] = $description;
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// use current date (@midnight) as timestamp
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$item['timestamp'] = (new \DateTime())
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->setTimezone(new \DateTimeZone('Europe/Berlin'))
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->setTime(0, 0)
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->getTimestamp();
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$item['uri'] = urljoin(
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'https://www.flaschenpost.de/',
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"{$product->brandWebShopUrl}/{$product->webShopUrl}"
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);
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// use "name-<timestamp>" as uid; that way, there's a new entry each day, when a product stays discounted
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$item['uid'] = $name . '-' . $item['timestamp'];
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// only add if unique
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$exists = false;
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foreach ($this->items as $i) {
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if ($i['uri'] === $item['uri']) {
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$exists = true;
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break;
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}
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}
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if (!$exists) {
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$this->items[] = $item;
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}
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}
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}
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public function getIcon()
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{
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return 'https://image.flaschenpost.de/CI/fp-favicon.png';
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}
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// https://stackoverflow.com/a/3975706/421140
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private function recursiveFind(array $haystack, $needle)
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{
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$iterator = new \RecursiveArrayIterator($haystack);
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$recursive = new \RecursiveIteratorIterator(
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$iterator,
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\RecursiveIteratorIterator::SELF_FIRST
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);
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foreach ($recursive as $key => $value) {
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if ($key === $needle) {
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return $value;
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}
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}
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return null;
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}
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/**
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* http://ryanuber.com/07-31-2012/split-and-decode-json-php.html
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*
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* json_split_objects - Return an array of many JSON objects
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*
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* In some applications (such as PHPUnit, or salt), JSON output is presented as multiple
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* objects, which you cannot simply pass in to json_decode(). This function will split
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* the JSON objects apart and return them as an array of strings, one object per indice.
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*
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* @param string $json The JSON data to parse
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*
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* @return array (of strings)
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*/
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private function splitJsonObjects(string $json): array
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{
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$q = false;
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$len = strlen($json);
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for ($l = $c = $i = 0; $i < $len; $i++) {
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$json[$i] == '"' && ($i > 0 ? $json[$i - 1] : '') != '\\' && $q = !$q;
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if (!$q && in_array($json[$i], [' ', "\r", "\n", "\t"])) {
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continue;
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}
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in_array($json[$i], ['{', '[']) && !$q && $l++;
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in_array($json[$i], ['}', ']']) && !$q && $l--;
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(isset($objects[$c]) && $objects[$c] .= $json[$i]) || $objects[$c] = $json[$i];
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$c += ($l == 0);
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}
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return $objects ?? [];
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}
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}
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