get_artist_art/get_artist_art.c

#include <libconfig.h>
#include <unistd.h>
#include <curl/curl.h>
#include <stdio.h>
#include <stdlib.h>

#define conf_file "config.ini"
#define mb_url "https://musicbrainz.org/ws/2/artist?query=artist:\"Slayer\"&fmt=json"

const char *get_conf_str(char set_key[10]) {
  const char *prog_conf = malloc(10 * sizeof(char));
  config_t cfg;
  config_setting_t *setting;

  config_init(&cfg);

  if (!config_read_file(&cfg, conf_file)) {
    fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg),
            config_error_line(&cfg), config_error_text(&cfg));
    config_destroy(&cfg);
    return "";
  }

  setting = config_lookup(&cfg, set_key);

  prog_conf = config_setting_get_string(setting);

  config_destroy(&cfg);
  return prog_conf;
}

int get_conf_int(char set_key[10]) {
  int set_int;
  config_t cfg;
  config_setting_t *setting;

  config_init(&cfg);

  if (!config_read_file(&cfg, conf_file)) {
    fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg),
            config_error_line(&cfg), config_error_text(&cfg));
    config_destroy(&cfg);
    return 1;
  }

  setting = config_lookup(&cfg, set_key);
  set_int = config_setting_get_int(setting);

  config_destroy(&cfg);

  return set_int;
}

void print_conf(const char m_dir[20], const int mb_conf,
                const char ftv_api_key[32]) {
  if (m_dir != NULL) {
    printf("The music directory is: %s\n", m_dir);
  }
  if (mb_conf != 1) {
    printf("The lower limit for MB confidence is: %d\n", mb_conf);
  }
  if (ftv_api_key != NULL) {
    printf("Your API key is: %s\n", ftv_api_key);
  }
}

const char* get_mb_id(){
	int response_code;
	const char *mb_id;
	CURL *curl;
	CURLcode res;
	char *buffer;
	long res_len;
	
	curl_global_init(CURL_GLOBAL_DEFAULT);
	
	curl = curl_easy_init();
	
	if (curl) {
		curl_easy_setopt(curl, CURLOPT_URL, mb_url);
		
		res = curl_easy_perform(curl);
		
		if (res != CURLE_OK) {
			fprintf(stderr, "curl_easy_perform() failed with error: %s\n", curl_easy_strerror(res));
			return "1";
		}
		
		curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T, &res_len);
		
		buffer = malloc(res_len);
		
		res = curl_easy_recv(curl, buffer, res_len, 0);
		
		if(res != CURLE_OK){
			fprintf(stderr, "curl_easy_recv() failed with error: %s\n", curl_easy_strerror(res));
			return "1";
		}
		
		printf("Response body: %s\n", buffer);
		
		free(buffer);
		
		curl_easy_cleanup(curl);
	}
	
	
	return mb_id;
}



int main(int argc, char **argv) {
  int mb_conf, opt;
  const char *m_dir, *ftv_api_key;

  m_dir = get_conf_str("dir");
  mb_conf = get_conf_int("confidence");
  ftv_api_key = get_conf_str("api_key");

	while ((opt = getopt(argc, argv, "ps:")) != -1){
		switch (opt) {
			case 'p':
				print_conf(m_dir, mb_conf, ftv_api_key);
				break;
			default:
				printf("So long and thanks for all the fish.\n");
				break;
		}
	}

  return EXIT_SUCCESS;
}