// Entwickler-Werkzeuge nur für Admins: Die App fragt bei MBMNET, ob die verknüpfte NNID einem Admin
// gehört (GET /mbmnet/app-info?pid=...). Die Antwort wird auf der SD gemerkt, damit die Werkzeuge
// auch im Nintendo-Modus und ohne Verbindung da sind.
#include <3ds.h>
#include <stdio.h>
#include <string.h>

#include "admin.h"

#define CACHE_FILE "sdmc:/3ds/mbmnet/admin"

static volatile bool isAdmin;
static Thread thread;
static char url[128];

static void remember(bool on)
{
    FILE *f = fopen(CACHE_FILE, "w");
    if (f) { fputs(on ? "1" : "0", f); fclose(f); }
}

static void worker(void *arg)
{
    (void)arg;
    httpcContext ctx;
    if (R_FAILED(httpcOpenContext(&ctx, HTTPC_METHOD_GET, url, 1))) return;
    httpcAddRequestHeaderField(&ctx, "User-Agent", "MBMNET-Switcher/" APP_VERSION);
    u32 status = 0, got = 0;
    char body[32] = { 0 };
    Result rc = httpcBeginRequest(&ctx);
    if (R_SUCCEEDED(rc)) rc = httpcGetResponseStatusCodeTimeout(&ctx, &status, 8ULL * 1000 * 1000 * 1000);
    if (R_SUCCEEDED(rc) && status == 200) httpcDownloadData(&ctx, (u8 *)body, sizeof(body) - 1, &got);
    httpcCloseContext(&ctx);
    if (status != 200 || strncmp(body, "admin=", 6) != 0) return;   // keine Antwort: gemerkte gilt weiter
    isAdmin = body[6] == '1';
    remember(isAdmin);
}

void admin_start(const char *server, u32 pid)
{
    FILE *f = fopen(CACHE_FILE, "r");
    if (f) { isAdmin = fgetc(f) == '1'; fclose(f); }
    if (!pid) return;
    snprintf(url, sizeof(url), "http://%s/mbmnet/app-info?pid=%lu", server, (unsigned long)pid);
    s32 prio = 0x30;
    svcGetThreadPriority(&prio, CUR_THREAD_HANDLE);
    thread = threadCreate(worker, NULL, 16 * 1024, prio + 1, -2, false);
}

bool admin_is(void) { return isAdmin; }

void admin_finish(void)
{
    if (!thread) return;
    if (R_SUCCEEDED(threadJoin(thread, 3ULL * 1000 * 1000 * 1000))) threadFree(thread);
    thread = NULL;
}