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+#include "grunge.h"
+#include <yaml-cpp/yaml.h>
+#include <iostream>
+#include <thread>
+#include <chrono>
+#include <curl_easy.h>
+#include <curl_header.h>
+#include <deque>
+#include "palette.h"
+
+grunge::grunge(
+  std::string configFile,
+  std::mt19937& rng) :
+    rng_(rng)
+{
+  // Load the config file.
+  YAML::Node config = YAML::LoadFile(configFile);
+
+  // Set up the Twitter client.
+  twitter::auth auth;
+  auth.setConsumerKey(config["consumer_key"].as<std::string>());
+  auth.setConsumerSecret(config["consumer_secret"].as<std::string>());
+  auth.setAccessKey(config["access_key"].as<std::string>());
+  auth.setAccessSecret(config["access_secret"].as<std::string>());
+
+  client_ = std::unique_ptr<twitter::client>(new twitter::client(auth));
+
+  // Set up the verbly database.
+  database_ = std::unique_ptr<verbly::database>(
+    new verbly::database(config["verbly_datafile"].as<std::string>()));
+}
+
+void grunge::run() const
+{
+  for (;;)
+  {
+    std::cout << "Generating tweet..." << std::endl;
+
+    try
+    {
+      // Find a noun to use as the pictured item.
+      std::cout << "Choosing pictured noun..." << std::endl;
+
+      verbly::word pictured = getPicturedNoun();
+
+      std::cout << "Noun: " << pictured.getBaseForm().getText() << std::endl;
+
+      // Choose a picture of that noun.
+      std::cout << "Finding an image..." << std::endl;
+
+      Magick::Image image = getImageForNoun(pictured);
+
+      // Pixelate the image.
+      std::cout << "Pixelating image..." << std::endl;
+
+      image = pixelateImage(std::move(image));
+
+      // Pastelize the image.
+      std::cout << "Pastelizing image..." << std::endl;
+
+      image = pastelizeImage(std::move(image));
+
+      // Generate the tweet text.
+      std::cout << "Generating text..." << std::endl;
+
+      std::string text = generateTweetText(pictured);
+
+      std::cout << "Tweet text: " << text << std::endl;
+
+      // Send the tweet.
+      std::cout << "Sending tweet..." << std::endl;
+
+      sendTweet(std::move(text), std::move(image));
+
+      std::cout << "Tweeted!" << std::endl;
+
+      // Wait.
+      std::this_thread::sleep_for(std::chrono::hours(1));
+    } catch (const could_not_get_images& ex)
+    {
+      std::cout << ex.what() << std::endl;
+    } catch (const Magick::ErrorImage& ex)
+    {
+      std::cout << "Image error: " << ex.what() << std::endl;
+    } catch (const Magick::ErrorCorruptImage& ex)
+    {
+      std::cout << "Corrupt image: " << ex.what() << std::endl;
+    } catch (const twitter::twitter_error& ex)
+    {
+      std::cout << "Twitter error: " << ex.what() << std::endl;
+
+      std::this_thread::sleep_for(std::chrono::hours(1));
+    }
+
+    std::cout << std::endl;
+  }
+}
+
+verbly::word grunge::getPicturedNoun() const
+{
+  verbly::filter whitelist =
+    (verbly::notion::wnid == 109287968)    // Geological formations
+    || (verbly::notion::wnid == 109208496) // Asterisms (collections of stars)
+    || (verbly::notion::wnid == 109239740) // Celestial bodies
+    || (verbly::notion::wnid == 109277686) // Exterrestrial objects (comets and meteroids)
+    || (verbly::notion::wnid == 109403211) // Radiators (supposedly natural radiators but actually these are just pictures of radiators)
+    || (verbly::notion::wnid == 109416076) // Rocks
+    || (verbly::notion::wnid == 105442131) // Chromosomes
+    || (verbly::notion::wnid == 100324978) // Tightrope walking
+    || (verbly::notion::wnid == 100326094) // Rock climbing
+    || (verbly::notion::wnid == 100433458) // Contact sports
+    || (verbly::notion::wnid == 100433802) // Gymnastics
+    || (verbly::notion::wnid == 100439826) // Track and field
+    || (verbly::notion::wnid == 100440747) // Skiing
+    || (verbly::notion::wnid == 100441824) // Water sport
+    || (verbly::notion::wnid == 100445351) // Rowing
+    || (verbly::notion::wnid == 100446980) // Archery
+      // TODO: add more sports
+    || (verbly::notion::wnid == 100021939) // Artifacts
+    || (verbly::notion::wnid == 101471682) // Vertebrates
+      ;
+
+  verbly::filter blacklist =
+    (verbly::notion::wnid == 106883725) // swastika
+    || (verbly::notion::wnid == 104416901) // tetraskele
+    || (verbly::notion::wnid == 102512053) // fish
+    || (verbly::notion::wnid == 103575691) // instrument of execution
+    || (verbly::notion::wnid == 103829563) // noose
+      ;
+
+  verbly::query<verbly::word> pictureQuery = database_->words(
+    (verbly::notion::fullHypernyms %= whitelist)
+    && !(verbly::notion::fullHypernyms %= blacklist)
+    && (verbly::notion::partOfSpeech == verbly::part_of_speech::noun)
+    && (verbly::notion::numOfImages >= 1));
+
+  verbly::word pictured = pictureQuery.first();
+
+  return pictured;
+}
+
+Magick::Image grunge::getImageForNoun(verbly::word pictured) const
+{
+  // Accept string from Google Chrome
+  std::string accept = "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
+  curl::curl_header headers;
+  headers.add(accept);
+
+  int backoff = 0;
+
+  std::cout << "Getting URLs..." << std::endl;
+
+  std::string lstdata;
+  while (lstdata.empty())
+  {
+    std::ostringstream lstbuf;
+    curl::curl_ios<std::ostringstream> lstios(lstbuf);
+    curl::curl_easy lsthandle(lstios);
+    std::string lsturl = pictured.getNotion().getImageNetUrl();
+    lsthandle.add<CURLOPT_URL>(lsturl.c_str());
+
+    try
+    {
+      lsthandle.perform();
+    } catch (const curl::curl_easy_exception& e)
+    {
+      e.print_traceback();
+
+      backoff++;
+      std::cout << "Waiting for " << backoff << " seconds..." << std::endl;
+
+      std::this_thread::sleep_for(std::chrono::seconds(backoff));
+
+      continue;
+    }
+
+    backoff = 0;
+
+    if (lsthandle.get_info<CURLINFO_RESPONSE_CODE>().get() != 200)
+    {
+      throw could_not_get_images();
+    }
+
+    std::cout << "Got URLs." << std::endl;
+    lstdata = lstbuf.str();
+  }
+
+  std::vector<std::string> lstvec = verbly::split<std::vector<std::string>>(lstdata, "\r\n");
+  if (lstvec.empty())
+  {
+    throw could_not_get_images();
+  }
+
+  std::shuffle(std::begin(lstvec), std::end(lstvec), rng_);
+
+  std::deque<std::string> urls;
+  for (std::string& url : lstvec)
+  {
+    urls.push_back(url);
+  }
+
+  bool found = false;
+  Magick::Blob img;
+  Magick::Image pic;
+
+  while (!found && !urls.empty())
+  {
+    std::string url = urls.front();
+    urls.pop_front();
+
+    std::ostringstream imgbuf;
+    curl::curl_ios<std::ostringstream> imgios(imgbuf);
+    curl::curl_easy imghandle(imgios);
+
+    imghandle.add<CURLOPT_HTTPHEADER>(headers.get());
+    imghandle.add<CURLOPT_URL>(url.c_str());
+    imghandle.add<CURLOPT_CONNECTTIMEOUT>(30);
+
+    try
+    {
+      imghandle.perform();
+    } catch (curl::curl_easy_exception error) {
+      error.print_traceback();
+
+      continue;
+    }
+
+    if (imghandle.get_info<CURLINFO_RESPONSE_CODE>().get() != 200)
+    {
+      continue;
+    }
+
+    std::string content_type = imghandle.get_info<CURLINFO_CONTENT_TYPE>().get();
+    if (content_type.substr(0, 6) != "image/")
+    {
+      continue;
+    }
+
+    std::string imgstr = imgbuf.str();
+    img = Magick::Blob(imgstr.c_str(), imgstr.length());
+
+    try
+    {
+      pic.read(img);
+
+      if ((pic.rows() > 0) && (pic.columns() >= 800))
+      {
+        std::cout << url << std::endl;
+        found = true;
+      }
+    } catch (const Magick::ErrorOption& e)
+    {
+      // Occurs when the the data downloaded from the server is malformed
+      std::cout << "Magick: " << e.what() << std::endl;
+    }
+  }
+
+  if (!found)
+  {
+    throw could_not_get_images();
+  }
+
+  return pic;
+}
+
+Magick::Image grunge::pixelateImage(Magick::Image image) const
+{
+  // Check that the image dimensions are a multiple of four.
+  if ((image.rows() % 4 != 0) || (image.columns() % 4 != 0))
+  {
+    Magick::Geometry cropped(
+      image.columns() - (image.columns() % 4),
+      image.rows() - (image.rows() % 4));
+
+    image.crop(cropped);
+  }
+
+  // Downscale the image.
+  Magick::Geometry originalSize = image.size();
+  Magick::Geometry pixelatedSize(
+    originalSize.width() / 4,
+    originalSize.height() / 4);
+
+  image.scale(pixelatedSize);
+
+  // Scale the image back up.
+  image.scale(originalSize);
+
+  return image;
+}
+
+Magick::Image grunge::pastelizeImage(Magick::Image input) const
+{
+  input.quantizeColorSpace(Magick::GRAYColorspace);
+  input.quantizeColors(256);
+  input.quantize();
+
+  palette pastelPalette = palette::randomPalette(rng_);
+  Magick::Geometry size = input.size();
+  Magick::Image pastelized(size, "white");
+
+  for (int y=0; y<size.height(); y++)
+  {
+    for (int x=0; x<size.width(); x++)
+    {
+      Magick::ColorGray grade =
+        static_cast<Magick::ColorGray>(input.pixelColor(x, y));
+      Magick::Color mapped = pastelPalette.getColor(grade.shade());
+
+      pastelized.pixelColor(x, y, mapped);
+    }
+  }
+
+  return pastelized;
+}
+
+std::string grunge::generateTweetText(verbly::word pictured) const
+{
+  verbly::word simpler = database_->words(
+    (verbly::notion::partOfSpeech == verbly::part_of_speech::noun)
+    && (verbly::notion::fullHyponyms %= pictured)
+    && (verbly::form::proper == false)).first();
+
+  std::vector<std::string> symbols = {"☯","✡","☨","✞","✝","☮","☥","☦","☪","✌"};
+  std::string prefix;
+  std::string suffix;
+  int length = std::geometric_distribution<int>(0.5)(rng_) + 1;
+  for (int i=0; i<length; i++)
+  {
+    std::string choice = symbols[
+      std::uniform_int_distribution<int>(0, symbols.size()-1)(rng_)];
+
+    prefix += choice;
+    suffix = choice + suffix;
+  }
+
+  verbly::token action = {
+    prefix,
+    "follow for more soft grunge",
+    simpler,
+    suffix
+  };
+
+  return action.compile();
+}
+
+void grunge::sendTweet(std::string text, Magick::Image image) const
+{
+  Magick::Blob outputBlob;
+  image.magick("jpg");
+  image.write(&outputBlob);
+
+  long media_id = client_->uploadMedia("image/jpeg", (const char*) outputBlob.data(), outputBlob.length());
+  client_->updateStatus(std::move(text), {media_id});
+}