#define MG_ENABLE_SOCKET 0
#define MG_ENABLE_LINES 1
#define MG_ENABLE_MIP 1
#define MG_ENABLE_PACKED_FS 0

#include <assert.h>
#include "mongoose.c"
#include "driver_mock.c"

static int s_num_tests = 0;

#define ASSERT(expr)                                            \
  do {                                                          \
    s_num_tests++;                                              \
    if (!(expr)) {                                              \
      printf("FAILURE %s:%d: %s\n", __FILE__, __LINE__, #expr); \
      abort();                                                  \
    }                                                           \
  } while (0)

static void test_queue(void) {
  static uint8_t
      buf[sizeof(size_t) + sizeof(uint16_t) + 3];  // fit 1 element but not 2
  uint16_t val = 1234;
  static struct queue q = {buf, sizeof(buf), 0, 0};

  // Write to an empty queue, and read back
  ASSERT(q_avail(&q) == 0);
  ASSERT(q_write(&q, &val, sizeof(val)) == true);
  ASSERT(q_avail(&q) == sizeof(val));
  ASSERT(q.head > q.tail);
  // Only one element may fit
  ASSERT(q_write(&q, &val, sizeof(val)) == false);
  val = 0;
  ASSERT(q_read(&q, &val) == sizeof(val));
  ASSERT(val == 1234);
  ASSERT(q_avail(&q) == 0);

  // Second write - wrap over the buffer boundary
  ASSERT(q_write(&q, &val, sizeof(val)) == true);
  ASSERT(q_avail(&q) == sizeof(val));
  ASSERT(q.head < q.tail);
  // Only one element may fit
  ASSERT(q_write(&q, &val, sizeof(val)) == false);
  val = 0;
  ASSERT(q_read(&q, &val) == sizeof(val));
  ASSERT(val == 1234);
  ASSERT(q_avail(&q) == 0);
}

static void test_statechange(void) {
  char tx[1540];
  struct mip_if iface;
  memset(&iface, 0, sizeof(iface));
  iface.ip = mg_htonl(0x01020304);
  iface.state = MIP_STATE_READY;
  iface.tx.ptr = tx, iface.tx.len = sizeof(tx);
  iface.driver = &mip_driver_mock;
  onstatechange(&iface);
}

static void ph(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_POLL) ++(*(int *) fn_data);
  (void) c, (void) ev_data;
}

static void test_poll(void) {
  int count = 0, i;
  struct mg_mgr mgr;
  mg_mgr_init(&mgr);
  struct mip_if mif;
  memset(&mif, 0, sizeof(mif));
  mif.driver = &mip_driver_mock;
  mip_init(&mgr, &mif);
  mg_http_listen(&mgr, "http://127.0.0.1:12346", ph, &count);
  for (i = 0; i < 10; i++) mg_mgr_poll(&mgr, 0);
  ASSERT(count == 10);
  mip_free(&mif);
  mg_mgr_free(&mgr);
}

int main(void) {
  test_queue();
  test_statechange();
  test_poll();
  printf("SUCCESS. Total tests: %d\n", s_num_tests);
  return 0;
}