initial version

CHANGELOG.md

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+## Changelog
+
+### 0.1.0 
+
+first version

ClassicCounter.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+namespace Piwik\Plugins\ClassicCounter;
+
+use Piwik\Access;
+
+class ClassicCounter extends \Piwik\Plugin
+{
+    public static function getVisitorCount($idSite) {
+        $visitsCount = Access::getInstance()->doAsSuperUser(function () use ($idSite) {
+            return \Piwik\API\Request::processRequest('VisitsSummary.getVisits', array(
+                'idSite' => $idSite,
+                'period' => "range",
+                'date' => "2000-01-01,2030-01-01",
+            ))->getFirstRow()["nb_visits"];
+        });
+        return (int)$visitsCount;
+    }
+
+}

Controller.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+namespace Piwik\Plugins\ClassicCounter;
+
+use Piwik\Cache;
+use Piwik\Common;
+use Piwik\View;
+
+
+class Controller extends \Piwik\Plugin\Controller
+{
+    private $sevenSegment = [
+        "0" => [true, true, true, true, true, true, false],
+        "1" => [false, true, true, false, false, false, false],
+        "2" => [true, true, false, true, true, false, true],
+        "3" => [true, true, true, true, false, false, true],
+        "4" => [false, true, true, false, false, true, true],
+        "5" => [true, false, true, true, false, true, true],
+        "6" => [true, false, true, true, true, true, true],
+        "7" => [true, true, true, false, false, false, false],
+        "8" => [true, true, true, true, true, true, true],
+        "9" => [true, true, true, true, false, true, true]
+    ];
+
+
+    public function svg() {
+        $idSite = Common::getRequestVar('idSite', $this->idSite, 'int');
+
+        $cache = Cache::getLazyCache();
+        $cacheKey = "ClassicCounter_Visits_" . $idSite;
+        if ($cache->contains($cacheKey)) {
+            $visitCount = $cache->fetch($cacheKey);
+        } else {
+            $visitCount = ClassicCounter::getVisitorCount($idSite);
+            $cache->save($cacheKey, $visitCount, 60);
+        }
+
+        $view = new View("@ClassicCounter/svg");
+        $view->setContentType("image/svg+xml");
+        $view->number = $visitCount;
+        $chars = str_split($visitCount);
+        foreach ($chars as $char) {
+            if (empty($this->sevenSegment[$char])) {
+                throw new \Exception("character can't be shown on seven segment display");
+            }
+            $view->digits[] = $this->sevenSegment[$char];
+        }
+        $view->length = strlen($visitCount);
+        return $view->render();
+    }
+}

README.md

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+# Matomo ClassicCounter Plugin
+
+## Description
+
+No website is complete without a nostalgic view counter at the bottom!
+
+This plugin allows you to add an image showing the total amount of visits per `idSite`.
+
+```html
+<img src="https://yourmatomoinstance.example/index.php?module=ClassicCounter&action=svg&idSite=1&period=day">
+```
+
+<img src="./screenshots/4909.png" height="80">

Tasks.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+namespace Piwik\Plugins\ClassicCounter;
+
+use Piwik\Cache;
+use Piwik\FrontController;
+use Piwik\Plugins\ClassicCounter\Controller;
+use Piwik\Plugins\SitesManager\API as SitesManagerApi;
+
+class Tasks extends \Piwik\Plugin\Tasks
+{
+    public function schedule() {
+        $this->hourly('updateCache', null, self::LOW_PRIORITY);
+    }
+
+    public function updateCache() {
+        $cache = Cache::getLazyCache();
+        $bla=new Controller();
+
+        $siteIds = SitesManagerApi::getInstance()->getAllSitesId();
+        foreach ($siteIds as $idSite) {
+            $cacheKey = "ClassicCounter_Visits_" . $idSite;
+
+            $visitCount = ClassicCounter::getVisitorCount($idSite);
+            $cache->save($cacheKey, $visitCount, 60);
+
+        }
+    }
+
+}

plugin.json

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+{
+  "name": "ClassicCounter",
+  "description": "Embed a view counter in the style of classic CGI scripts into your website",
+  "version": "0.1.0",
+  "theme": false,
+  "require": {
+    "piwik": ">=3.8.0,<4.0.0-b1"
+  },
+  "authors": [
+    {
+      "name": "Lukas Winkler",
+      "email": "lukas@matomo.org",
+      "homepage": "https://lw1.at"
+    }
+  ],
+  "support": {
+    "email": "lukas@matomo.org",
+    "issues": "https://github.com/Findus23/plugin-ClassicCounter/issues",
+    "forum": "https://forum.matomo.org",
+    "source": "https://github.com/Findus23/plugin-ClassicCounter"
+  },
+  "homepage": "https://lw1.at",
+  "license": "GPL v3+",
+  "keywords": [
+    "nostalgia"
+  ]
+}

templates/svg.twig

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+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
+     version="1.1"
+     baseProfile="full"
+     viewBox="-1 -1 {{ length*12 }} 20">
+    <title>{{ number }}</title>
+    <style>
+        svg {
+            background-color: black;
+        }
+
+        polygon {
+            fill-opacity: 0.75;
+            fill-rule: evenodd;
+            stroke: black;
+            stroke-width: 0.25;
+            stroke-opacity: 1.0;
+            stroke-linecap: butt;
+            stroke-linejoin: miter;
+        }
+
+        .on {
+            fill: red;
+        }
+
+        use {
+            fill: #222222;
+        }
+    </style>
+    <defs id="defs">
+        <polygon id="a" points=" 1, 1  2, 0  8, 0  9, 1  8, 2  2, 2"></polygon><!-- top -->
+        <polygon id="b" points=" 9, 1 10, 2 10, 8  9, 9  8, 8  8, 2"></polygon><!-- right top -->
+        <polygon id="c" points=" 9, 9 10,10 10,16  9,17  8,16  8,10"></polygon><!-- right bottom -->
+        <polygon id="d" points=" 9,17  8,18  2,18  1,17  2,16  8,16"></polygon><!-- bottom -->
+        <polygon id="e" points=" 1,17  0,16  0,10  1, 9  2,10  2,16"></polygon><!-- left bottom -->
+        <polygon id="f" points=" 1, 9  0, 8  0, 2  1, 1  2, 2  2, 8"></polygon><!-- left top -->
+        <polygon id="g" points=" 1, 9  2, 8  8, 8  9, 9  8,10  2,10"></polygon><!-- center -->
+
+    </defs>
+    {% for digit in digits %}
+        <g transform="translate({{ loop.index0*12 }},0)">
+            <use xlink:href="#a"{{ digit[0] ? " class=\"on\"":"" }}/>
+            <use xlink:href="#b"{{ digit[1] ? " class=\"on\"":"" }}/>
+            <use xlink:href="#c"{{ digit[2] ? " class=\"on\"":"" }}/>
+            <use xlink:href="#d"{{ digit[3] ? " class=\"on\"":"" }}/>
+            <use xlink:href="#e"{{ digit[4] ? " class=\"on\"":"" }}/>
+            <use xlink:href="#f"{{ digit[5] ? " class=\"on\"":"" }}/>
+            <use xlink:href="#g"{{ digit[6] ? " class=\"on\"":"" }}/>
+        </g>
+    {% endfor %}
+</svg>