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@@ -0,0 +1,102 @@
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+<?php
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+
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+require_once("Flammenkuchen.php");
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+
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+class Router
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+{
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+ protected $request;
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+ protected $requestingDate;
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+ protected $data;
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+
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+ protected $LATEST = -1;
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+
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+ function __construct()
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+ {
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+ $this->request = $_SERVER["REQUEST_URI"];
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+ $this->data = null;
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+
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+ if ($this->request[0] == '/')
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+ $this->request = substr($this->request, 1);
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+
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+ if ($this->request == "")
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+ $this->requestingDate = $this->checkFileExists($this->LATEST);
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+ else if (strlen($this->request) == 6)
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+ {
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+ $isNumeric = true;
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+
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+ for ($i =0; $i < 6; $i++)
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+ {
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+ if (!is_numeric($this->request[$i]))
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+ {
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+ $isNumeric = false;
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+ break;
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+ }
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+ }
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+ if ($isNumeric)
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+ $this->requestingDate = $this->checkFileExists($this->request);
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+ }
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+ }
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+
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+ private function checkFileExists($yymmdd)
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+ {
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+ if ($yymmdd != $this->LATEST)
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+ {
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+ // TODO use index cache
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+ if (file_exists("../data/${yymmdd}.json"))
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+ return $yymmdd;
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+ return null;
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+ }
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+ else
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+ {
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+ $now = (int) (new \Datetime())->format("ymd");
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+ $min = 0;
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+
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+ // obvious today-is-the-day
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+ if ($this->checkFileExists($now))
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+ return $now;
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+
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+ //TODO use index cache
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+ $datadir = opendir("../data/");
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+ while (($file = readdir($datadir)) !== false)
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+ {
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+ if (is_dir("../data/".$file)
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+ || strlen($file) != 11
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+ || substr($file, 6) !== ".json")
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+ continue;
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+
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+ $current = (int) substr($file, 0, 6);
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+
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+ if ($current > $now)
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+ continue;
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+ if ($now - $current < $now - $min)
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+ $min = $current;
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+ }
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+ closedir($datadir);
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+ return $min === 0 ? null : $min;
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+ }
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+ }
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+
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+ public function isLost()
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+ {
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+ if ($this->requestingDate === null)
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+ return true;
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+ if ($this->data === null)
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+ $this->readData();
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+ return ($this->data === false);
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+ }
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+
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+ public function getData()
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+ {
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+ if ($this->data === null)
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+ $this->data = $this->readData();
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+ return $this->data;
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+ }
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+
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+ private function readData()
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+ {
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+ $req = $this->requestingDate;
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+
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+ return new Flammenkuchen(json_decode(file_get_contents("../data/${req}.json")));
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+ }
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+}
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+
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isundil