get_artist_art/get_artist_art.c

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

#define version_str "1.0"
#define conf_file "config.ini"
#define mb_url                                                                 \
  "https://musicbrainz.org/ws/2/artist?query=artist:\"%s\"&fmt=json"

const char *get_conf_str(char set_key[]) {
  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[]) {
  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[], 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(char *artist_name) {
  int response_code;
  const char *mb_id;
  CURL *curl;
  CURLcode res;
  char *buffer;
  long res_len;
  char mb_url_full[100];

  curl_global_init(CURL_GLOBAL_DEFAULT);

  curl = curl_easy_init();

  if (curl) {
	char *artist_name_esc = curl_easy_escape(curl, artist_name, 0);
	printf("%s", artist_name_esc);
    snprintf(mb_url_full, sizeof(mb_url_full), mb_url, artist_name_esc);
	// snprintf(mb_url_full, sizeof(mb_url_full), "%s", curl_easy_escape(curl, mb_url_full, 0));
	printf("%s\n", mb_url_full);
    curl_easy_setopt(curl, CURLOPT_URL, mb_url_full);
    curl_easy_setopt(curl, CURLOPT_USERAGENT, "get_artist_art.py/1.0");

    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;
    case 's':
      printf("This doesn't do anything yet but you searched for %s\n", optarg);
      break;
    default:
      printf("So long and thanks for all the fish.\n");
      break;
    }
  }

  get_mb_id("The Beatles");

  return EXIT_SUCCESS;
}