#include <bson/bcon.h>
#include <mongoc/mongoc.h>
#include <mongoc/mongoc-collection-private.h>
#include <mongoc/mongoc-find-and-modify-private.h>
#include <mongoc/mongoc-client-private.h>

#include "TestSuite.h"

#include "test-libmongoc.h"
#include "test-conveniences.h"
#include "mock_server/future-functions.h"
#include "mock_server/mock-server.h"

static void
auto_hello (mock_server_t *server,
            int32_t max_wire_version,
            int32_t max_message_size,
            int32_t max_bson_size,
            int32_t max_batch_size)
{
   char *response = bson_strdup_printf ("{'isWritablePrimary': true, "
                                        " 'maxWireVersion': %d,"
                                        " 'maxBsonObjectSize': %d,"
                                        " 'maxMessageSizeBytes': %d,"
                                        " 'maxWriteBatchSize': %d }",
                                        max_wire_version,
                                        max_bson_size,
                                        max_message_size,
                                        max_batch_size);

   BSON_ASSERT (max_wire_version > 0);
   mock_server_auto_hello (server, response);

   bson_free (response);
}


static void
test_find_and_modify_bypass (bool bypass)
{
   mongoc_collection_t *collection;
   mongoc_client_t *client;
   mock_server_t *server;
   request_t *request;
   future_t *future;
   bson_error_t error;
   bson_t *update;
   bson_t doc = BSON_INITIALIZER;
   bson_t reply;
   mongoc_find_and_modify_opts_t *opts;

   server = mock_server_new ();
   mock_server_run (server);

   client =
      test_framework_client_new_from_uri (mock_server_get_uri (server), NULL);
   ASSERT (client);

   collection =
      mongoc_client_get_collection (client, "test", "test_find_and_modify");

   auto_hello (server,
               WIRE_VERSION_MIN, /* max_wire_version */
               48000000,         /* max_message_size */
               16777216,         /* max_bson_size */
               1000);            /* max_write_batch_size */

   BSON_APPEND_INT32 (&doc, "superduper", 77889);

   update = BCON_NEW ("$set", "{", "superduper", BCON_INT32 (1234), "}");

   opts = mongoc_find_and_modify_opts_new ();
   mongoc_find_and_modify_opts_set_bypass_document_validation (opts, bypass);
   BSON_ASSERT (
      bypass ==
      mongoc_find_and_modify_opts_get_bypass_document_validation (opts));
   mongoc_find_and_modify_opts_set_update (opts, update);
   mongoc_find_and_modify_opts_set_flags (opts,
                                          MONGOC_FIND_AND_MODIFY_RETURN_NEW);

   future = future_collection_find_and_modify_with_opts (
      collection, &doc, opts, &reply, &error);

   if (bypass) {
      request = mock_server_receives_msg (
         server,
         MONGOC_MSG_NONE,
         tmp_bson ("{'$db': 'test',"
                   " 'findAndModify': 'test_find_and_modify',"
                   " 'query': {'superduper': 77889},"
                   " 'update': {'$set': {'superduper': 1234}},"
                   " 'new': true,"
                   " 'bypassDocumentValidation': true}"));
   } else {
      request = mock_server_receives_msg (
         server,
         MONGOC_MSG_NONE,
         tmp_bson ("{'$db': 'test',"
                   " 'findAndModify': 'test_find_and_modify', "
                   "'query': {'superduper': 77889},"
                   "'update': {'$set': {'superduper': 1234}},"
                   "'new': true }"));
   }

   reply_to_request_simple (request, "{ 'value' : null, 'ok' : 1 }");
   ASSERT_OR_PRINT (future_get_bool (future), error);

   future_destroy (future);
   request_destroy (request);

   mongoc_find_and_modify_opts_destroy (opts);
   bson_destroy (&reply);
   bson_destroy (update);

   mongoc_collection_destroy (collection);
   mongoc_client_destroy (client);
   mock_server_destroy (server);
   bson_destroy (&doc);
}

static void
test_find_and_modify_bypass_true (void)
{
   test_find_and_modify_bypass (true);
}

static void
test_find_and_modify_bypass_false (void)
{
   test_find_and_modify_bypass (false);
}

static void
test_find_and_modify_write_concern (void)
{
   mongoc_collection_t *collection;
   mongoc_client_t *client;
   mock_server_t *server;
   request_t *request;
   future_t *future;
   bson_error_t error;
   bson_t *update;
   bson_t doc = BSON_INITIALIZER;
   bson_t reply;
   mongoc_find_and_modify_opts_t *opts;
   mongoc_write_concern_t *write_concern;

   server = mock_server_new ();
   mock_server_run (server);

   client =
      test_framework_client_new_from_uri (mock_server_get_uri (server), NULL);
   ASSERT (client);

   collection =
      mongoc_client_get_collection (client, "test", "test_find_and_modify");

   auto_hello (server,
               WIRE_VERSION_MIN, /* max_wire_version */
               48000000,         /* max_message_size */
               16777216,         /* max_bson_size */
               1000);            /* max_write_batch_size */

   BSON_APPEND_INT32 (&doc, "superduper", 77889);

   update = BCON_NEW ("$set", "{", "superduper", BCON_INT32 (1234), "}");

   write_concern = mongoc_write_concern_new ();
   mongoc_write_concern_set_w (write_concern, 42);
   opts = mongoc_find_and_modify_opts_new ();
   mongoc_collection_set_write_concern (collection, write_concern);
   mongoc_find_and_modify_opts_set_update (opts, update);
   mongoc_find_and_modify_opts_set_flags (opts,
                                          MONGOC_FIND_AND_MODIFY_RETURN_NEW);

   future = future_collection_find_and_modify_with_opts (
      collection, &doc, opts, &reply, &error);

   request = mock_server_receives_msg (
      server,
      MONGOC_MSG_NONE,
      tmp_bson ("{'$db': 'test',"
                " 'findAndModify': 'test_find_and_modify', "
                " 'query': {'superduper': 77889 },"
                " 'update': {'$set': {'superduper': 1234}},"
                " 'new': true,"
                " 'writeConcern': {'w': 42}}"));

   reply_to_request_simple (request, "{ 'value' : null, 'ok' : 1 }");
   ASSERT_OR_PRINT (future_get_bool (future), error);

   future_destroy (future);
   request_destroy (request);

   mongoc_find_and_modify_opts_destroy (opts);
   bson_destroy (&reply);
   bson_destroy (update);

   mongoc_write_concern_destroy (write_concern);
   mongoc_collection_destroy (collection);
   mongoc_client_destroy (client);
   bson_destroy (&doc);
   mock_server_destroy (server);
}

static void
test_find_and_modify_write_concern_failure (void *context)
{
   mongoc_collection_t *collection;
   mongoc_client_t *client;
   bson_error_t error;
   mongoc_find_and_modify_opts_t *opts;
   bson_t reply;
   bson_t query = BSON_INITIALIZER;
   bson_t *update;
   bool success;
   mongoc_write_concern_t *wc;

   BSON_UNUSED (context);

   client = test_framework_new_default_client ();
   collection = get_test_collection (client, "writeFailure");
   wc = mongoc_write_concern_new ();

   mongoc_write_concern_set_w (wc, 42);
   mongoc_collection_set_write_concern (collection, wc);

   /* Find Zlatan Ibrahimovic, the striker */
   BSON_APPEND_UTF8 (&query, "firstname", "Zlatan");
   BSON_APPEND_UTF8 (&query, "lastname", "Ibrahimovic");
   BSON_APPEND_UTF8 (&query, "profession", "Football player");
   BSON_APPEND_INT32 (&query, "age", 34);
   BSON_APPEND_INT32 (
      &query, "goals", (16 + 35 + 23 + 57 + 16 + 14 + 28 + 84) + (1 + 6 + 62));

   /* Add his football position */
   update = BCON_NEW ("$set", "{", "position", BCON_UTF8 ("striker"), "}");

   opts = mongoc_find_and_modify_opts_new ();

   mongoc_find_and_modify_opts_set_update (opts, update);

   /* Create the document if it didn't exist, and return the updated document */
   mongoc_find_and_modify_opts_set_flags (
      opts, MONGOC_FIND_AND_MODIFY_UPSERT | MONGOC_FIND_AND_MODIFY_RETURN_NEW);

   success = mongoc_collection_find_and_modify_with_opts (
      collection, &query, opts, &reply, &error);

   ASSERT (!success);
   ASSERT_ERROR_CONTAINS (
      error, MONGOC_ERROR_WRITE_CONCERN, 100, "Write Concern error:");

   bson_destroy (&reply);
   bson_destroy (update);
   bson_destroy (&query);
   mongoc_find_and_modify_opts_destroy (opts);
   mongoc_collection_drop (collection, NULL);
   mongoc_write_concern_destroy (wc);
   mongoc_collection_destroy (collection);
   mongoc_client_destroy (client);
}

static void
test_find_and_modify (void)
{
   mongoc_collection_t *collection;
   mongoc_client_t *client;
   bson_error_t error;
   bson_iter_t iter;
   bson_iter_t citer;
   bson_t *update;
   bson_t doc = BSON_INITIALIZER;
   bson_t tmp;
   bson_t reply;
   mongoc_find_and_modify_opts_t *opts;

   client = test_framework_new_default_client ();
   ASSERT (client);

   collection = get_test_collection (client, "test_find_and_modify");
   ASSERT (collection);

   BSON_APPEND_INT32 (&doc, "superduper", 77889);

   ASSERT_OR_PRINT (
      mongoc_collection_insert_one (collection, &doc, NULL, NULL, &error),
      error);

   update = BCON_NEW ("$set", "{", "superduper", BCON_INT32 (1234), "}");

   opts = mongoc_find_and_modify_opts_new ();
   mongoc_find_and_modify_opts_set_update (opts, update);
   mongoc_find_and_modify_opts_get_update (opts, &tmp);
   assert_match_bson (&tmp, update, false);
   bson_destroy (&tmp);
   mongoc_find_and_modify_opts_set_fields (opts,
                                           tmp_bson ("{'superduper': 1}"));
   mongoc_find_and_modify_opts_get_fields (opts, &tmp);
   assert_match_bson (&tmp, tmp_bson ("{'superduper': 1}"), false);
   bson_destroy (&tmp);
   mongoc_find_and_modify_opts_set_sort (opts, tmp_bson ("{'superduper': 1}"));
   mongoc_find_and_modify_opts_get_sort (opts, &tmp);
   assert_match_bson (&tmp, tmp_bson ("{'superduper': 1}"), false);
   bson_destroy (&tmp);
   mongoc_find_and_modify_opts_set_flags (opts,
                                          MONGOC_FIND_AND_MODIFY_RETURN_NEW);
   BSON_ASSERT (MONGOC_FIND_AND_MODIFY_RETURN_NEW ==
                mongoc_find_and_modify_opts_get_flags (opts));

   ASSERT_OR_PRINT (mongoc_collection_find_and_modify_with_opts (
                       collection, &doc, opts, &reply, &error),
                    error);

   BSON_ASSERT (bson_iter_init_find (&iter, &reply, "value"));
   BSON_ASSERT (BSON_ITER_HOLDS_DOCUMENT (&iter));
   BSON_ASSERT (bson_iter_recurse (&iter, &citer));
   BSON_ASSERT (bson_iter_find (&citer, "superduper"));
   BSON_ASSERT (BSON_ITER_HOLDS_INT32 (&citer));
   BSON_ASSERT (bson_iter_int32 (&citer) == 1234);

   BSON_ASSERT (bson_iter_init_find (&iter, &reply, "lastErrorObject"));
   BSON_ASSERT (BSON_ITER_HOLDS_DOCUMENT (&iter));
   BSON_ASSERT (bson_iter_recurse (&iter, &citer));
   BSON_ASSERT (bson_iter_find (&citer, "updatedExisting"));
   BSON_ASSERT (BSON_ITER_HOLDS_BOOL (&citer));
   BSON_ASSERT (bson_iter_bool (&citer));

   bson_destroy (&reply);
   bson_destroy (update);

   ASSERT_OR_PRINT (mongoc_collection_drop (collection, &error), error);

   mongoc_find_and_modify_opts_destroy (opts);
   mongoc_collection_destroy (collection);
   mongoc_client_destroy (client);
   bson_destroy (&doc);
}


static void
test_find_and_modify_opts (void)
{
   mock_server_t *server;
   mongoc_client_t *client;
   mongoc_collection_t *collection;
   bson_error_t error;
   mongoc_find_and_modify_opts_t *opts;
   bson_t extra;
   future_t *future;
   request_t *request;

   server = mock_server_with_auto_hello (WIRE_VERSION_MIN);
   mock_server_run (server);

   client =
      test_framework_client_new_from_uri (mock_server_get_uri (server), NULL);
   collection = mongoc_client_get_collection (client, "db", "collection");

   opts = mongoc_find_and_modify_opts_new ();
   BSON_ASSERT (mongoc_find_and_modify_opts_set_max_time_ms (opts, 42));
   ASSERT_CMPUINT32 (
      42, ==, mongoc_find_and_modify_opts_get_max_time_ms (opts));
   BSON_ASSERT (
      mongoc_find_and_modify_opts_append (opts, tmp_bson ("{'foo': 1}")));
   mongoc_find_and_modify_opts_get_extra (opts, &extra);
   assert_match_bson (&extra, tmp_bson ("{'foo': 1}"), false);
   bson_destroy (&extra);

   future = future_collection_find_and_modify_with_opts (
      collection, tmp_bson ("{}"), opts, NULL, &error);
   request =
      mock_server_receives_msg (server,
                                MONGOC_MSG_NONE,
                                tmp_bson ("{'$db': 'db',"
                                          " 'findAndModify': 'collection',"
                                          " 'maxTimeMS': 42,"
                                          " 'foo': 1}"));
   reply_to_request_with_ok_and_destroy (request);
   ASSERT_OR_PRINT (future_get_bool (future), error);

   future_destroy (future);
   mongoc_find_and_modify_opts_destroy (opts);
   mongoc_collection_destroy (collection);
   mongoc_client_destroy (client);
   mock_server_destroy (server);
}


static void
test_find_and_modify_opts_write_concern (void)
{
   mongoc_write_concern_t *w2;
   mongoc_write_concern_t *w3;
   mock_server_t *server;
   mongoc_client_t *client;
   mongoc_collection_t *collection;
   bson_error_t error;
   mongoc_find_and_modify_opts_t *opts;
   bson_t extra = BSON_INITIALIZER;
   future_t *future;
   request_t *request;

   w2 = mongoc_write_concern_new ();
   mongoc_write_concern_set_w (w2, 2);
   w3 = mongoc_write_concern_new ();
   mongoc_write_concern_set_w (w3, 3);

   server = mock_server_with_auto_hello (WIRE_VERSION_MIN);
   mock_server_run (server);

   client =
      test_framework_client_new_from_uri (mock_server_get_uri (server), NULL);
   collection = mongoc_client_get_collection (client, "db", "collection");

   opts = mongoc_find_and_modify_opts_new ();
   mongoc_write_concern_append (w2, &extra);
   BSON_ASSERT (mongoc_find_and_modify_opts_append (opts, &extra));
   bson_destroy (&extra);

   future = future_collection_find_and_modify_with_opts (
      collection, tmp_bson ("{}"), opts, NULL, &error);
   request =
      mock_server_receives_msg (server,
                                MONGOC_MSG_NONE,
                                tmp_bson ("{'$db': 'db',"
                                          " 'findAndModify': 'collection',"
                                          " 'writeConcern': {'w': 2}}"));
   reply_to_request_with_ok_and_destroy (request);
   ASSERT_OR_PRINT (future_get_bool (future), error);
   future_destroy (future);

   /* opts overrides collection */
   mongoc_collection_set_write_concern (collection, w3);
   future = future_collection_find_and_modify_with_opts (
      collection, tmp_bson ("{}"), opts, NULL, &error);

   /* still w: 2 */
   request =
      mock_server_receives_msg (server,
                                MONGOC_MSG_NONE,
                                tmp_bson ("{'$db': 'db',"
                                          " 'findAndModify': 'collection',"
                                          " 'writeConcern': {'w': 2}}"));
   reply_to_request_with_ok_and_destroy (request);
   ASSERT_OR_PRINT (future_get_bool (future), error);
   future_destroy (future);

   mongoc_find_and_modify_opts_destroy (opts);
   mongoc_collection_destroy (collection);
   mongoc_client_destroy (client);
   mock_server_destroy (server);
   mongoc_write_concern_destroy (w2);
   mongoc_write_concern_destroy (w3);
}


static void
test_find_and_modify_collation (void)
{
   mock_server_t *server;
   mongoc_client_t *client;
   mongoc_collection_t *collection;
   bson_error_t error;
   mongoc_find_and_modify_opts_t *opts;
   future_t *future;
   request_t *request;
   bson_t *collation;

   server = mock_server_with_auto_hello (WIRE_VERSION_MIN);
   mock_server_run (server);

   client =
      test_framework_client_new_from_uri (mock_server_get_uri (server), NULL);
   collection = mongoc_client_get_collection (client, "db", "collection");


   collation = BCON_NEW ("collation",
                         "{",
                         "locale",
                         BCON_UTF8 ("en_US"),
                         "caseFirst",
                         BCON_UTF8 ("lower"),
                         "}");
   opts = mongoc_find_and_modify_opts_new ();
   BSON_ASSERT (mongoc_find_and_modify_opts_append (opts, collation));

   future = future_collection_find_and_modify_with_opts (
      collection, tmp_bson ("{}"), opts, NULL, &error);

   request = mock_server_receives_msg (
      server,
      MONGOC_MSG_NONE,
      tmp_bson ("{'$db': 'db',"
                " 'findAndModify': 'collection',"
                " 'collation': {'locale': 'en_US', 'caseFirst': 'lower'}}"));
   reply_to_request_with_ok_and_destroy (request);
   ASSERT_OR_PRINT (future_get_bool (future), error);
   future_destroy (future);

   bson_destroy (collation);
   mongoc_find_and_modify_opts_destroy (opts);
   mongoc_collection_destroy (collection);
   mongoc_client_destroy (client);

   mock_server_destroy (server);
}


static void
test_find_and_modify_hint (void)
{
   mongoc_client_t *client;
   mongoc_collection_t *coll;
   mongoc_find_and_modify_opts_t *opts;
   bson_error_t error;
   bool ret;

   /* Test setting a hint as a string. Should fail on server < 4.2. */
   client = test_framework_new_default_client ();
   mongoc_client_set_error_api (client, MONGOC_ERROR_API_VERSION_2);
   coll = get_test_collection (client, "fam_hint");
   opts = mongoc_find_and_modify_opts_new ();
   mongoc_find_and_modify_opts_append (opts, tmp_bson ("{'hint': 'abc'}"));
   mongoc_find_and_modify_opts_set_update (opts, tmp_bson ("{}"));
   ret = mongoc_collection_find_and_modify_with_opts (
      coll, tmp_bson ("{}"), opts, NULL /* reply */, &error);
   if (test_framework_max_wire_version_at_least (
          WIRE_VERSION_FIND_AND_MODIFY_HINT)) {
      ASSERT_OR_PRINT (ret, error);
   } else if (test_framework_max_wire_version_at_least (
                 WIRE_VERSION_FIND_AND_MODIFY_HINT_SERVER_SIDE_ERROR)) {
      BSON_ASSERT (!ret);
      BSON_ASSERT (error.domain == MONGOC_ERROR_SERVER);
      /* server error. */
   } else {
      BSON_ASSERT (!ret);
      ASSERT_ERROR_CONTAINS (
         error,
         MONGOC_ERROR_COMMAND,
         MONGOC_ERROR_PROTOCOL_BAD_WIRE_VERSION,
         "The selected server does not support hint for findAndModify");
   }

   mongoc_find_and_modify_opts_destroy (opts);
   mongoc_collection_destroy (coll);
   mongoc_client_destroy (client);
}

void
test_find_and_modify_install (TestSuite *suite)
{
   TestSuite_AddLive (
      suite, "/find_and_modify/find_and_modify", test_find_and_modify);
   TestSuite_AddMockServerTest (suite,
                                "/find_and_modify/find_and_modify/bypass/true",
                                test_find_and_modify_bypass_true);
   TestSuite_AddMockServerTest (suite,
                                "/find_and_modify/find_and_modify/bypass/false",
                                test_find_and_modify_bypass_false);
   TestSuite_AddMockServerTest (
      suite,
      "/find_and_modify/find_and_modify/write_concern",
      test_find_and_modify_write_concern);
   TestSuite_AddFull (suite,
                      "/find_and_modify/find_and_modify/write_concern_failure",
                      test_find_and_modify_write_concern_failure,
                      NULL,
                      NULL,
                      test_framework_skip_if_not_replset);
   TestSuite_AddMockServerTest (
      suite, "/find_and_modify/opts", test_find_and_modify_opts);
   TestSuite_AddMockServerTest (suite,
                                "/find_and_modify/opts/write_concern",
                                test_find_and_modify_opts_write_concern);
   TestSuite_AddMockServerTest (
      suite, "/find_and_modify/collation", test_find_and_modify_collation);
   TestSuite_AddLive (
      suite, "/find_and_modify/hint", test_find_and_modify_hint);
}
