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#include "cadence.h"
#include <stdexcept>
#include <yaml-cpp/yaml.h>
#include <iostream>
#include <fstream>
#include <chrono>
#include <thread>
#include <list>
#include <hkutil/string.h>
cadence::cadence(
std::string configFile,
std::mt19937& rng) :
rng_(rng)
{
// Load the config file.
YAML::Node config = YAML::LoadFile(configFile);
// Read in the forms file.
std::ifstream datafile(config["forms"].as<std::string>());
if (!datafile.is_open())
{
throw std::invalid_argument("Could not find forms file");
}
bool newgroup = true;
std::string line;
std::string curgroup;
while (getline(datafile, line))
{
if (line.back() == '\r')
{
line.pop_back();
}
if (newgroup)
{
curgroup = line;
newgroup = false;
} else {
if (line.empty())
{
newgroup = true;
} else {
groups_[curgroup].push_back(line);
}
}
}
// Connect to the AcousticBrainz data file.
database_ =
std::unique_ptr<hatkirby::database>(
new hatkirby::database(
config["acoustic_datafile"].as<std::string>(),
hatkirby::dbmode::read));
// 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));
}
void cadence::run() const
{
for (;;)
{
std::cout << "Generating tweet..." << std::endl;
hatkirby::row songRow =
database_->queryFirst(
"SELECT song_id, title, artist FROM songs ORDER BY RANDOM() LIMIT 1");
hatkirby::row moodRow =
database_->queryFirst(
"SELECT mood FROM moods WHERE song_id = ? ORDER BY RANDOM() LIMIT 1",
{ mpark::get<int>(songRow[0]) });
std::string songTitle = mpark::get<std::string>(songRow[1]);
std::string songArtist = mpark::get<std::string>(songRow[2]);
std::string mood = mpark::get<std::string>(moodRow[0]);
std::string action = "{" + hatkirby::uppercase(mood) + "}";
int tknloc;
while ((tknloc = action.find("{")) != std::string::npos)
{
std::string token = action.substr(tknloc+1, action.find("}")-tknloc-1);
std::string modifier;
int modloc;
if ((modloc = token.find(":")) != std::string::npos)
{
modifier = token.substr(modloc+1);
token = token.substr(0, modloc);
}
std::string canontkn = hatkirby::uppercase(token);
std::string result;
if (canontkn == "\\N")
{
result = "\n";
} else if (canontkn == "ARTIST")
{
result = songArtist;
} else if (canontkn == "SONG")
{
result = "\"" + songTitle + "\"";
} else if (groups_.count(canontkn)) {
auto& group = groups_.at(canontkn);
std::uniform_int_distribution<int> dist(0, group.size() - 1);
result = group[dist(rng_)];
} else {
throw std::logic_error("No such form as " + canontkn);
}
if (modifier == "indefinite")
{
if (
(result.length() > 1) &&
isupper(result[0]) &&
isupper(result[1]))
{
result = "an " + result;
} else if (
(result[0] == 'a') ||
(result[0] == 'e') ||
(result[0] == 'i') ||
(result[0] == 'o') ||
(result[0] == 'u'))
{
result = "an " + result;
} else {
result = "a " + result;
}
}
std::string finalresult;
if (islower(token[0]))
{
finalresult = hatkirby::lowercase(result);
} else if (isupper(token[0]) && !isupper(token[1]))
{
auto words = hatkirby::split<std::list<std::string>>(result, " ");
for (auto& word : words)
{
word[0] = std::toupper(word[0]);
}
finalresult = hatkirby::implode(
std::begin(words),
std::end(words),
" ");
} else {
finalresult = result;
}
action.replace(tknloc, action.find("}")-tknloc+1, finalresult);
}
if (action.size() <= 140)
{
try
{
client_->updateStatus(action);
std::cout << action << std::endl;
} catch (const twitter::twitter_error& e)
{
std::cout << "Twitter error: " << e.what() << std::endl;
}
std::cout << "Waiting..." << std::endl;
std::this_thread::sleep_for(std::chrono::hours(1));
std::cout << std::endl;
} else {
std::cout << "Tweet was too long, regenerating." << std::endl;
}
}
}
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