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slack_pingpong.cpp
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slack_pingpong.cpp
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#include "slacking.hpp"
#include "json.hpp"
using json = nlohmann::json;
#include <iostream>
#include <string>
#include <cstdlib>
#include <fstream>
#include <ctime>
#include <unistd.h>
int main() {
std::string slack_token = std::getenv("SLACK_TOKEN");
std::string channel = std::getenv("SLACK_CHANNEL");
std::string username = std::getenv("SLACK_USERNAME");
std::time_t start_time = std::time(NULL);
// create slack connection with token
auto& slack = slack::create(slack_token);
slack.chat.channel = channel;
// search channelID from its name
json getChannelID;
getChannelID["token"] = slack_token;
getChannelID["types"] = "public_channel,private_channel,mpim,im";
getChannelID["limit"] = 100;
std::string channelID;
json channels = slack::post("conversations.list", getChannelID);
for (auto& element : channels["channels"]) {
if (element["name"] == channel) {
channelID = element["id"];
}
}
std::cout << "channel: " << channel << " (" << channelID << ")" << std::endl;
json getChannelHistory;
getChannelHistory["token"] = slack_token;
getChannelHistory["channel"] = channelID;
getChannelHistory["oldest"] = start_time;
json pong;
pong["text"] = "*pong*";
pong["channel"] = channel;
pong["username"] = username;
pong["mrkdwn"] = true;
pong["icon_emoji"] = ":princess:";
json messages;
// main loop; check new arrival message, if the text matches, reply
while(true) {
messages = slack::post("conversations.history", getChannelHistory);
for (auto& element : messages["messages"]) {
// you may do smehitng here
if (element["type"] == "message" and element["text"] == "ping") {
slack::post("chat.postMessage", pong);
}
if (getChannelHistory["oldest"] < element["ts"]) {
getChannelHistory["oldest"] = element["ts"];
}
}
sleep(5);
}
}