zynk/cmd_weather.h

#ifndef CMD_WEATHER_H
#define CMD_WEATHER_H

#include "zynk.h"

/*
 * cmd_weather - Handle the "!weather [city]" command.
 *
 * Fetches current weather data from wttr.in for the specified city
 * (defaults to Berlin). Normalizes the city name, fetches the one-line
 * weather format, and sends the result to IRC. Rate-limited.
 *
 * Parameters:
 *   s            - The IRC session.
 *   msg          - The raw message text.
 *   reply_target - Channel or nick to reply to.
 *   src_nick     - The nick of the user who sent the command.
 *
 * Returns: 1 if matched, 0 otherwise.
 */
int cmd_weather(Session *s, const char *msg, const char *reply_target, const char *src_nick) {
  if (strncmp(msg, "!weather", 8) != 0) return 0;
  if (msg[8] != ' ' && msg[8] != '\0') return 0;
  if (rate_limit_check(src_nick, reply_target, current_userhost) < 0) return 1;
  char city[256], city_url[256];
  const char *rest = msg[8] == ' ' ? msg + 9 : "";
  while (*rest == ' ') rest++;
  normalize_city(rest, city, sizeof city, city_url, sizeof city_url);
  char url[512];
  snprintf(url, sizeof url, "https://wttr.in/%s?format=%%l:+%%t+%%C&m", city_url);
  char *body = fetch_url(url);
  char resp[1024];
  if (body) {
    char *nl = strchr(body, '\n');
    if (nl) *nl = 0;
    snprintf(resp, sizeof resp, "%s", body);
    free(body);
  } else {
    snprintf(resp, sizeof resp, "Weather: could not fetch data");
  }
  irc_reply(s, reply_target, src_nick, resp);
  log_stamp(); fprintf(stderr, CLR_MAGENTA "WEATHER %s from %s:" CLR_RESET " %s\n", reply_target, src_nick, resp);
  return 1;
}

#endif