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#include <stdexcept>
#include <vector>
#include <string>
#include <yaml-cpp/yaml.h>
#include <sqlite3.h>
#include <iostream>
#include <fstream>
#include <twitter.h>
#include <chrono>
#include <thread>
#include <random>
#include <list>
#include "util.h"
const std::vector<std::string> moods = {"party", "chill", "crazy", "happy", "sad", "instrumental", "vocal"};
int main(int argc, char** argv)
{
if (argc != 2)
{
std::cout << "usage: cadence [configfile]" << std::endl;
return -1;
}
std::string configfile(argv[1]);
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>());
twitter::client client(auth);
// Read in the forms file.
std::map<std::string, std::vector<std::string>> groups;
std::ifstream datafile(config["forms"].as<std::string>());
if (!datafile.is_open())
{
std::cout << "Could not find forms file." << std::endl;
return 1;
}
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);
}
}
}
// Initialize the random number generator.
std::random_device random_device;
std::mt19937 random_engine{random_device()};
// Connect to the AcousticBrainz data file.
sqlite3* ppdb = nullptr;
if (sqlite3_open_v2(config["acoustic_datafile"].as<std::string>().c_str(), &ppdb, SQLITE_OPEN_READONLY, NULL) != SQLITE_OK)
{
// We still have to free the resources allocated. In the event that
// allocation failed, ppdb will be null and sqlite3_close_v2 will just
// ignore it.
sqlite3_close_v2(ppdb);
std::cout << "Could not open acoustic datafile." << std::endl;
return 1;
}
for (;;)
{
std::cout << "Generating tweet..." << std::endl;
std::string mood = moods[std::uniform_int_distribution<int>(0, moods.size()-1)(random_engine)];
std::string songTitle;
std::string songArtist;
sqlite3_stmt* ppstmt;
std::string query = "SELECT title, artist FROM songs WHERE category = ? ORDER BY RANDOM() LIMIT 1";
if (sqlite3_prepare_v2(ppdb, query.c_str(), query.length(), &ppstmt, NULL) != SQLITE_OK)
{
std::cout << "Error reading from acoustic datafile:" << std::endl;
std::cout << sqlite3_errmsg(ppdb) << std::endl;
return 1;
}
sqlite3_bind_text(ppstmt, 1, mood.c_str(), mood.length(), SQLITE_TRANSIENT);
if (sqlite3_step(ppstmt) == SQLITE_ROW)
{
songTitle = reinterpret_cast<const char*>(sqlite3_column_blob(ppstmt, 0));
songArtist = reinterpret_cast<const char*>(sqlite3_column_blob(ppstmt, 1));
} else {
std::cout << "Error reading from acoustic datafile:" << std::endl;
std::cout << sqlite3_errmsg(ppdb) << std::endl;
return 1;
}
sqlite3_finalize(ppstmt);
std::string action = "{" + cadence::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;
std::transform(std::begin(token), std::end(token), std::back_inserter(canontkn), [] (char ch) {
return std::toupper(ch);
});
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(random_engine)];
} else {
std::cout << "Badly formatted forms file:" << std::endl;
std::cout << "No such form as " + canontkn << std::endl;
return 1;
}
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]))
{
std::transform(std::begin(result), std::end(result), std::back_inserter(finalresult), [] (char ch) {
return std::tolower(ch);
});
} else if (isupper(token[0]) && !isupper(token[1]))
{
auto words = cadence::split<std::list<std::string>>(result, " ");
for (auto& word : words)
{
word[0] = std::toupper(word[0]);
}
finalresult = cadence::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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