commit e1784bdd4ccc76cfae1cfe0ddc670cf129c10518
Author: Joshua Seigler <github@joshua.seigler.net>
Date:   Thu Jun 30 21:01:08 2016 -0400

    functioning rest-style chart server!

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c8146f9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+# https://git-scm.com/docs/gitignore
+# https://help.github.com/articles/ignoring-files
+# Example .gitignore files: https://github.com/github/gitignore
+/bower_components/
+/node_modules/
+/vendor/
+/.brackets.json
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..0112a57
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,7 @@
+{
+  "require": {
+    "seigler/neat-charts": "@dev",
+    "altorouter/altorouter": "1.1.0",
+    "phpFastCache/phpFastCache": "^4.3"
+  }
+}
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..f182d4c
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,187 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "This file is @generated automatically"
+    ],
+    "hash": "1bb799d5b600f9167c5a63c390825771",
+    "content-hash": "8a896903dde64517a29ad409d716c428",
+    "packages": [
+        {
+            "name": "altorouter/altorouter",
+            "version": "v1.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/dannyvankooten/AltoRouter.git",
+                "reference": "09d9d946c546bae6d22a7654cdb3b825ffda54b4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/dannyvankooten/AltoRouter/zipball/09d9d946c546bae6d22a7654cdb3b825ffda54b4",
+                "reference": "09d9d946c546bae6d22a7654cdb3b825ffda54b4",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "AltoRouter.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Danny van Kooten",
+                    "email": "dannyvankooten@gmail.com",
+                    "homepage": "http://dannyvankooten.com/"
+                },
+                {
+                    "name": "Koen Punt",
+                    "homepage": "https://github.com/koenpunt"
+                },
+                {
+                    "name": "niahoo",
+                    "homepage": "https://github.com/niahoo"
+                }
+            ],
+            "description": "A lightning fast router for PHP",
+            "homepage": "https://github.com/dannyvankooten/AltoRouter",
+            "keywords": [
+                "lightweight",
+                "router",
+                "routing"
+            ],
+            "time": "2014-04-16 09:44:40"
+        },
+        {
+            "name": "phpfastcache/phpfastcache",
+            "version": "4.3.17",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/PHPSocialNetwork/phpfastcache.git",
+                "reference": "348f765dbb426f5da1d009802ab496909e4ad691"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/PHPSocialNetwork/phpfastcache/zipball/348f765dbb426f5da1d009802ab496909e4ad691",
+                "reference": "348f765dbb426f5da1d009802ab496909e4ad691",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "suggest": {
+                "ext-apc": "*",
+                "ext-mbstring": "*",
+                "ext-memcache": "*",
+                "ext-memcached": "*",
+                "ext-predis": "*",
+                "ext-redis": "*",
+                "ext-sqlite": "*"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "src/phpFastCache/phpFastCache.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Khoa Bui",
+                    "email": "khoaofgod@gmail.com",
+                    "homepage": "http://www.phpfastcache.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Georges.L",
+                    "email": "contact@geolim4.com",
+                    "homepage": "https://github.com/Geolim4",
+                    "role": "Developer"
+                }
+            ],
+            "description": "PHP Cache Class - Supported Redis, Cookie, Predis, APC, MemCached, WinCache, Files, PDO, Reduce mySQL Call by Caching",
+            "homepage": "http://www.phpfastcache.com",
+            "keywords": [
+                "APC Cache",
+                "apc",
+                "cache",
+                "cache class",
+                "caching",
+                "cookie",
+                "files cache",
+                "memcache",
+                "memcached",
+                "mysql cache",
+                "pdo cache",
+                "php cache",
+                "predis",
+                "redis",
+                "wincache"
+            ],
+            "time": "2016-05-17 22:29:47"
+        },
+        {
+            "name": "seigler/neat-charts",
+            "version": "dev-master",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/seigler/neat-charts.git",
+                "reference": "352794cbfcd9d7e4d7d6973188cf35e69d21f723"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/seigler/neat-charts/zipball/352794cbfcd9d7e4d7d6973188cf35e69d21f723",
+                "reference": "352794cbfcd9d7e4d7d6973188cf35e69d21f723",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "NeatCharts\\LineChart": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Joshua Seigler",
+                    "email": "joshua@seigler.net",
+                    "homepage": "https://joshua.seigler.net/",
+                    "role": "Developer"
+                }
+            ],
+            "description": "Generates clean-looking SVG charts",
+            "homepage": "https://github.com/seigler/neat-charts",
+            "keywords": [
+                "chart",
+                "charts",
+                "svg"
+            ],
+            "time": "2016-06-29 18:58:29"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": {
+        "seigler/neat-charts": 20
+    },
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": []
+}
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..5f12263
--- /dev/null
+++ b/index.php
@@ -0,0 +1,54 @@
+<?php
+ini_set('display_errors', 1);
+error_reporting(E_ALL);
+
+require_once 'vendor/autoload.php';
+require_once 'vendor/seigler/neat-charts/src/NeatCharts/NeatChart.php';
+require_once 'vendor/seigler/neat-charts/src/NeatCharts/LineChart.php';
+
+use phpFastCache\CacheManager;
+
+CacheManager::setup([
+  'storage' => 'files',
+  'path' => sys_get_temp_dir().'/cryptohistory-cache/'
+]);
+
+$router = new AltoRouter();
+
+$router->map('GET', '/', function() {
+  require __DIR__ . '/views/index.php';
+});
+
+// map cryptocurrency stuff
+$router->map( 'GET', '/charts/[BTC_DASH:pair]/[7d|24h:duration]/[svg|png:format]', function($pair, $duration, $format) {
+  require __DIR__ . '/views/chart.php';
+  renderChart(
+    $pair,
+    60 * 60 * 24 * ($duration == '7d' ? 7 : 1),
+    ($duration == '7d' ? 1800 : 300),
+    $format,
+    '#000',
+    800,
+    200,
+    12
+  );
+  return true;
+});
+
+// match current request url
+$match = $router->match();
+
+// call closure or throw 404 status
+try {
+  if( !$match || !is_callable( $match['target'] ) || false === call_user_func_array( $match['target'], $match['params'] )) {
+    // no route was matched
+    header( $_SERVER["SERVER_PROTOCOL"] . ' 404 Not Found');
+    echo '<h1>404 Not Found</h1><p>Page not found</p>';
+  }
+} catch (Exception $e) {
+  header($_SERVER["SERVER_PROTOCOL"]." 500 Server Error", true, 500);
+  echo 'There was some problem generating that for you.';
+  return true;
+}
+
+?>
diff --git a/views/chart.php b/views/chart.php
new file mode 100644
index 0000000..afa1399
--- /dev/null
+++ b/views/chart.php
@@ -0,0 +1,89 @@
+<?php
+use phpFastCache\CacheManager;
+
+function getJson($url) {
+  if (empty($url)) {
+    trigger_error('Missing or empty JSON url');
+  }
+  $ch = curl_init($url);
+  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+  curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: application/json'));
+  curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
+  curl_setopt($ch, CURLOPT_TIMEOUT, 30);
+  // http://unitstep.net/blog/2009/05/05/using-curl-in-php-to-access-https-ssltls-protected-sites/
+//  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
+//  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
+//  curl_setopt($ch, CURLOPT_CAINFO, getcwd() . "/VeriSignClass3PublicPrimaryCertificationAuthority-G5.pem");
+
+  $result = curl_exec($ch);
+  $result = json_decode($result) or trigger_error('Couldn\'t parse JSON');
+  return $result;
+}
+
+function renderChart(
+  $pair,
+  $dataDuration = (7 * 24 * 60 * 60),
+  $dataResolution = 1800,
+  $format = 'svg',
+  $color = '#000',
+  $width = 800,
+  $height = 200,
+  $fontSize = 12
+) {
+
+  $result = CacheManager::get('poloniex-'.$pair.'-'.$dataDuration.'-'.$format);
+
+  if (is_null($result)) {
+    $startTime = time() - $dataDuration;
+    $poloniexUrl = 'https://poloniex.com/public?command=returnChartData&currencyPair=' . $pair . '&start=' . $startTime . '&end=9999999999&period=' . $dataResolution;
+
+    $poloniexJson = CacheManager::get('poloniex-json-'.$pair.'-'.$dataDuration);
+
+    if(is_null($poloniexJson)) {
+      $poloniexJson = getJson($poloniexUrl);
+      // Write to cache for next time
+      CacheManager::set('poloniex-json-'.$pair.'-'.$dataDuration, $poloniexJson, $dataDuration);
+    }
+
+    $chartData = [];
+
+    foreach ($poloniexJson as $item) {
+      $chartData[$item->date] = $item->weightedAverage;
+    }
+
+    $poloniexChart = new NeatCharts\LineChart($chartData, [
+      'width'=>800,
+      'height'=>200,
+      'lineColor'=>"#1C75BC", // Dash blue
+      'labelColor'=>"#000",
+      'smoothed'=>false,
+      'fontSize'=>12
+    ]);
+    $result = $poloniexChart->render();
+
+    if ($format == 'png') {
+      $im = new Imagick();
+      $im->setBackgroundColor(new ImagickPixel("transparent"));
+      $im->readImageBlob($result);
+      $im->setImageFormat("png32");
+      $result = $im->getImageBlob();
+      $im->clear();
+      $im->destroy();
+    }
+    CacheManager::set('poloniex-'.$pair.'-'.$dataDuration.'-'.$format, $result, $dataDuration);
+    $resultExpires = time() + $dataDuration;
+  } else {
+    $resultExpires = CacheManager::getInfo('poloniex-'.$pair.'-'.$dataDuration.'-'.$format)[ 'expired_time' ];
+    $startTime = $resultExpires - $dataDuration;
+  }
+
+  header('Expires: '.gmdate("D, d M Y H:i:s", $resultExpires));
+  if ($format == 'svg') {
+    header('Content-type: image/svg+xml; charset=utf-8');
+    header('Content-Disposition: inline; filename="Dash-chart-' . gmdate('Y-m-d\THis+0', $startTime) . '--' . gmdate('Y-m-d\THis+0') . '.svg"');
+  } else if ($format == 'png') {
+    header("Content-Type: image/png");
+    header('Content-Disposition: inline; filename="Dash-chart-' . gmdate('Y-m-d\THis+0', $startTime) . '--' . gmdate('Y-m-d\THis+0') . '.png"');
+  }
+  echo $result;
+}
diff --git a/views/fakeStockData.php b/views/fakeStockData.php
new file mode 100644
index 0000000..d653ef4
--- /dev/null
+++ b/views/fakeStockData.php
@@ -0,0 +1,23 @@
+<?php
+
+$chartData = [];
+
+$offset = 100 * (rand()/getRandMax())**4;
+$scale = 100 * (rand()/getRandMax())**2;
+$volatility = 0.5 * (rand()/getRandMax())**3;
+
+for ($n = 0, $current = $offset + 0.5 * $scale; $n < 96; $n++) {
+  $current -= $offset;
+  $current *= 1 + $volatility * (rand()/getRandMax() - 0.5);
+  $current += $offset;
+  $chartData[$n] = $current;
+}
+
+$stockChart = new NeatCharts\LineChart($chartData, [
+  "width"=>500,
+  "height"=>150,
+  "fontSize"=>10
+]);
+print $stockChart->render();
+
+?>
diff --git a/views/fakeTempData.php b/views/fakeTempData.php
new file mode 100644
index 0000000..64c8e31
--- /dev/null
+++ b/views/fakeTempData.php
@@ -0,0 +1,24 @@
+<?php
+$chartData = [];
+
+$start = 100 * (rand()/getRandMax())**3;
+$volatility = rand()/getRandMax() + 0.01;
+$velocity = (rand()/getRandMax() - 0.5);
+$acceleration = 0.1 * (rand()/getRandMax())**2;
+
+for ($n = 0, $current = $start; $n < 12; $n++) {
+  $velocity *= 0.5;
+  $velocity += $acceleration * 2 * (rand()/getRandMax() - 0.5);
+  $current += $velocity;
+  $chartData[$n] = $current;
+}
+
+$tempChart = new NeatCharts\LineChart($chartData,  [
+  "width"=>700,
+  "height"=>400,
+  "lineColor"=>"#D00",
+  "labelColor"=>"#777",
+  "smoothed"=>true
+]);
+print $tempChart->render();
+?>
diff --git a/views/index.php b/views/index.php
new file mode 100644
index 0000000..8c624a0
--- /dev/null
+++ b/views/index.php
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en-US">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.0">
+  <title>NeatCharts demo</title>
+  <style>
+    main {
+      -webkit-columns: 800px 2;
+      -moz-columns: 800px 2;
+      columns: 800px 2;
+    }
+    section {
+      display: inline-block;
+      width: auto;
+      max-width: 800px;
+      padding: 10px;
+      vertical-align: top;
+    }
+  </style>
+</head>
+
+<body>
+  <header>
+    <h1>NeatCharts demo</h1>
+  </header>
+  <main>
+    <section>
+      <h2>Poloniex Dash/BTC Price</h2>
+      <img src="/charts/dash/24h" alt="Poloniex Dash/BTC price">
+    </section>
+
+    <section>
+      <h2>Fake Stock Market Data</h2>
+    </section>
+
+    <section>
+      <h2>Monotonically Smoothed Chart</h2>
+    </section>
+  </main>
+
+</body>
+</html>