132 lines
3.6 KiB
C
132 lines
3.6 KiB
C
#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <tgbot.h>
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#define WELCOME_MSG "Hi there! This bot is coded in C."
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void parse_command(tgbot *bot, tgbot_update *update);
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void sighandler(int signum);
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void callback_parser(tgbot *bot, tgbot_cbquery *query);
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bool run = true;
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tgbot bot;
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size_t rows = 1, columns = 2;
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tgbot_inlinekeyboardmarkup **keyboard;
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/* Callback handler function */
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void callback_handler(tgbot *bot, tgbot_cbquery *query) {
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if (strcmp("test-callback", query->data) == 0) {
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/* Handle `test-callback` */
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tgbot_inlinekeyboardmarkup **home_keyboard;
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tgbot_allocate_inlinekeyboardmarkup(&home_keyboard, 1, 1);
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strncpy(home_keyboard[0][0].text, "Home", sizeof(home_keyboard[0][0].text));
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strncpy(home_keyboard[0][0].url, "", sizeof(home_keyboard[0][0].url));
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strncpy(home_keyboard[0][0].callback_data, "home", sizeof(home_keyboard[0][0].callback_data));
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tgbot_edit_message_text(bot, query->chat_id, query->message_id, "Callback called!", home_keyboard, 1, 1);
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tgbot_deallocate_inlinekeyboardmarkup(home_keyboard, 1);
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return;
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} else if (strcmp("home", query->data) == 0) {
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tgbot_edit_message_text(bot, query->chat_id, query->message_id, WELCOME_MSG, keyboard, rows, columns);
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return;
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}
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}
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void sighandler(int signum) {
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fprintf(stdout, "Closing...\n");
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run = false;
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}
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void parse_command(tgbot *bot, tgbot_update *update) {
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tgbot_rc ret;
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if (strcmp("/start", update->text) == 0) {
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/* Example of an InlineKeyboardMarkup */
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/* Check global variables */
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tgbot_allocate_inlinekeyboardmarkup(&keyboard, rows, columns);
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/* Populate the InlineKeyboardMarkup */
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strncpy(keyboard[0][0].text, "Google", sizeof(keyboard[1][0].text));
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strncpy(keyboard[0][0].url, "https://google.com", sizeof(keyboard[1][0].url));
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strncpy(keyboard[0][0].callback_data, "", sizeof(keyboard[1][0].callback_data));
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strncpy(keyboard[0][1].text, "Callback", sizeof(keyboard[0][1].text));
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strncpy(keyboard[0][1].url, "", sizeof(keyboard[0][1].url));
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strncpy(keyboard[0][1].callback_data, "test-callback", sizeof(keyboard[0][1].callback_data));
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/* If you want 3 buttons on 2 rows, for example on the first row 2 buttons and on the second only one */
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/* you have to put rows = 2, columns = 2 and pass an empty string to .text field */
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ret = tgbot_send_message(bot, update->chat_id, WELCOME_MSG, "Markdown", keyboard, rows, columns);
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/* Deallocate the keyboard */
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/* See sighandler() */
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if (ret != TGBOT_OK) {
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fprintf(stderr, "Failed to send message\n");
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}
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return;
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}
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/* Echo the message */
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ret = tgbot_send_message(bot, update->chat_id, update->text, "Markdown", NULL, 0, 0);
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if (ret != TGBOT_OK) {
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fprintf(stderr, "Failed to send message\n");
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}
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}
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int main(void) {
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/* Find "your" way to free the resources */
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signal(SIGINT, sighandler);
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tgbot_rc ret;
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char token[256];
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FILE *fp = fopen(".token", "r");
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if (fp == NULL) {
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fprintf(stderr, "No .token file found!\n");
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exit(EXIT_FAILURE);
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}
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fscanf(fp, "%s", token);
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fprintf(stdout, "Token: %s\n", token);
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fclose(fp);
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/* Initialize the bot */
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ret = tgbot_init(&bot, token);
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if (ret != TGBOT_OK) {
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fprintf(stderr, "tgbot_init()\n");
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exit(1);
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}
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/* Calling tgbot_get_me() you can get bot's info */
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fprintf(stdout, "Running Telegram bot...\nPress Ctrl-C to close.\n");
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tgbot_update update;
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/* Main loop */
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while (run) {
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ret = tgbot_get_update(&bot, &update, callback_handler);
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if (ret != TGBOT_OK) {
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fprintf(stderr, "tgbot_get_updates()\n");
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continue;
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}
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if (update.message_id > 0) {
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parse_command(&bot, &update);
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}
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}
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tgbot_destroy(&bot);
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tgbot_deallocate_inlinekeyboardmarkup(keyboard, rows);
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return 0;
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}
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