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#include <twitter.h>
#include <yaml-cpp/yaml.h>
#include <mutex>
#include <thread>
#include <ctime>
#include <chrono>
#include <iostream>
#include <algorithm>
#include <random>
int main(int argc, char** argv)
{
if (argc != 2)
{
std::cout << "usage: toldya [configfile]" << std::endl;
return -1;
}
std::random_device randomDevice;
std::mt19937 rng(randomDevice());
std::string configfile(argv[1]);
YAML::Node config = YAML::LoadFile(configfile);
twitter::auth auth(
config["consumer_key"].as<std::string>(),
config["consumer_secret"].as<std::string>(),
config["access_key"].as<std::string>(),
config["access_secret"].as<std::string>());
std::vector<std::string> captions {
"It begins.",
"Yikes.",
"Frightening.",
"This is how it starts..."
};
std::map<twitter::user_id, std::vector<twitter::tweet>> potential;
std::set<twitter::tweet_id> tweetIds;
twitter::client client(auth);
std::set<twitter::user_id> friends = client.getFriends();
for (;;)
{
// Poll every 5 minutes
auto midtime = time(NULL);
auto midtm = localtime(&midtime);
// At 9am, do the daily tweet
bool shouldTweet = false;
if (midtm->tm_hour == 8 && midtm->tm_min >= 55)
{
shouldTweet = true;
std::cout << "Sleeping for 5 minutes (will tweet)..." << std::endl;
} else {
std::cout << "Sleeping for 5 minutes..." << std::endl;
}
std::this_thread::sleep_for(std::chrono::minutes(5));
std::list<twitter::tweet> newTweets = client.getHomeTimeline().poll();
for (twitter::tweet& nt : newTweets)
{
// Only monitor people you are following
// Ignore retweets
// Ignore messages
if (
(friends.count(nt.getAuthor().getID()) == 1)
&& (!nt.isRetweet())
&& (nt.getText().front() != '@')
)
{
std::cout << nt.getID() << ": " << nt.getText() << std::endl;
tweetIds.insert(nt.getID());
potential[nt.getAuthor().getID()].emplace_back(std::move(nt));
}
}
newTweets.clear();
// The rest of the loop is once-a-day
if (!shouldTweet)
{
continue;
}
// Unfollow people who have unfollowed us
try
{
friends = client.getFriends();
std::set<twitter::user_id> followers = client.getFollowers();
std::list<twitter::user_id> oldFriends;
std::set_difference(
std::begin(friends),
std::end(friends),
std::begin(followers),
std::end(followers),
std::back_inserter(oldFriends));
std::set<twitter::user_id> newFollowers;
std::set_difference(
std::begin(followers),
std::end(followers),
std::begin(friends),
std::end(friends),
std::inserter(newFollowers, std::begin(newFollowers)));
std::set<twitter::user_id> oldFriendsSet;
for (twitter::user_id f : oldFriends)
{
oldFriendsSet.insert(f);
try
{
client.unfollow(f);
} catch (const twitter::twitter_error& error)
{
std::cout << "Twitter error while unfollowing: " << error.what()
<< std::endl;
}
}
std::list<twitter::user> newFollowerObjs =
client.hydrateUsers(std::move(newFollowers));
for (const twitter::user& f : newFollowerObjs)
{
if (!f.isProtected())
{
try
{
client.follow(f);
} catch (const twitter::twitter_error& error)
{
std::cout << "Twitter error while following: " << error.what()
<< std::endl;
}
}
}
// Hydrate the tweets we've received to make sure that none of them have
// been deleted.
std::list<twitter::tweet> hydrated = client.hydrateTweets(tweetIds);
tweetIds.clear();
std::set<twitter::tweet_id> hydratedIds;
for (twitter::tweet& tw : hydrated)
{
hydratedIds.insert(tw.getID());
}
hydrated.clear();
// Filter the potential tweets for users that are still following us, and
// and for tweets that haven't been deleted.
std::map<twitter::user_id, std::vector<twitter::tweet>> toKeep;
for (auto& p : potential)
{
// The author has not unfollowed
if (!oldFriendsSet.count(p.first))
{
std::vector<twitter::tweet> userTweets;
for (twitter::tweet& pt : p.second)
{
// The tweet was not deleted
if (hydratedIds.count(pt.getID()))
{
userTweets.push_back(std::move(pt));
}
}
if (!userTweets.empty())
{
toKeep[p.first] = std::move(userTweets);
}
}
}
potential = std::move(toKeep);
} catch (const twitter::twitter_error& error)
{
std::cout << "Twitter error while getting friends/followers: "
<< error.what() << std::endl;
}
// Tweet!
if (!potential.empty())
{
std::uniform_int_distribution<size_t> userDist(0, potential.size() - 1);
const std::vector<twitter::tweet>& toQuoteUser =
std::next(std::begin(potential), userDist(rng))->second;
std::uniform_int_distribution<size_t> postDist(0, toQuoteUser.size() - 1);
const twitter::tweet& toQuote = toQuoteUser.at(postDist(rng));
std::uniform_int_distribution<size_t> captionDist(0, captions.size() - 1);
const std::string& caption = captions.at(captionDist(rng));
std::string doc = caption + " " + toQuote.getURL();
try
{
client.updateStatus(doc);
std::cout << "Tweeted!" << std::endl;
} catch (const twitter::twitter_error& error)
{
std::cout << "Error tweeting: " << error.what() << std::endl;
}
potential.clear();
}
}
}
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