#define _POSIX_C_SOURCE 200809L
#include <err.h>
#include <string.h>
#include <jansson.h>
#include "string-util.h"
#include "auth.h"
#include "http.h"

#define CLIENT_NAME "ap_client"

char *instance_domain;
char *auth_token;

static char *protocol = "https://";
static char *app_register_url = "/api/v1/apps";

int register_app(char *instance)
{
    json_t *root;
    json_error_t error;
    char *url;
    char *req_data;
    char *res_data;

    root = json_pack_ex(&error, 1, "{s:s, s:s, s:s}", "client_name",
            CLIENT_NAME, "redirect_uris", "urn:ietf:wg:oauth:2.0:oob", "scopes",
            "read write push");

    if (!root) {
        fprintf(stderr, "register_app(): json pack error: line %d: %s\n",
                error.line, error.text);
        return -1;
    }

    req_data = json_dumps(root, 0);
    json_decref(root);
    if (!req_data) {
        fprintf(stderr, "register_app(): failed to dump json\n");
        return -1;
    }

    size_t s = strlen(protocol) + strlen(instance) + strlen(app_register_url) + 1; 
    url = malloc(s);
    if (!url) {
        err(1, "register_app(): ");
    }

    sprintf(url, "%s%s%s", protocol, instance, app_register_url);
    res_data = post_request(url, req_data);
    if (!res_data) {
        free(req_data);
        return -1;
    }

    printf("res: \n%s\n", res_data);

    free(req_data);
    free(res_data);
    return 0;
}