/*
  Copyright 2019-2020 David Robillard <d@drobilla.net>

  Permission to use, copy, modify, and/or distribute this software for any
  purpose with or without fee is hereby granted, provided that the above
  copyright notice and this permission notice appear in all copies.

  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#undef NDEBUG

#include "serd/serd.h"

#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>

#define NS_EG "http://example.org/"

typedef struct {
  const SerdNode* last_base;
  const SerdNode* last_name;
  const SerdNode* last_namespace;
  const SerdNode* last_end;
  const SerdNode* last_subject;
  const SerdNode* last_predicate;
  const SerdNode* last_object;
  const SerdNode* last_graph;
  SerdStatus      return_status;
} State;

static SerdStatus
on_base(void* handle, const SerdNode* uri)
{
  State* state = (State*)handle;

  state->last_base = uri;
  return state->return_status;
}

static SerdStatus
on_prefix(void* handle, const SerdNode* name, const SerdNode* uri)
{
  State* state = (State*)handle;

  state->last_name      = name;
  state->last_namespace = uri;
  return state->return_status;
}

static SerdStatus
on_statement(void*                 handle,
             SerdStatementFlags    flags,
             const SerdNode* const graph,
             const SerdNode* const subject,
             const SerdNode* const predicate,
             const SerdNode* const object)
{
  (void)flags;

  State* state = (State*)handle;

  state->last_subject   = subject;
  state->last_predicate = predicate;
  state->last_object    = object;
  state->last_graph     = graph;

  return state->return_status;
}

static SerdStatus
on_end(void* handle, const SerdNode* node)
{
  State* state = (State*)handle;

  state->last_end = node;
  return state->return_status;
}

static void
test_callbacks(void)
{
  SerdNode* const base  = serd_new_uri(SERD_STRING(NS_EG));
  SerdNode* const name  = serd_new_string(SERD_STRING("eg"));
  SerdNode* const uri   = serd_new_uri(SERD_STRING(NS_EG "uri"));
  SerdNode* const blank = serd_new_blank(SERD_STRING("b1"));
  SerdEnv*        env   = serd_env_new(serd_node_string_view(base));
  State           state = {0, 0, 0, 0, 0, 0, 0, 0, SERD_SUCCESS};

  // Call functions on a sink with no functions set

  SerdSink* null_sink = serd_sink_new(&state, NULL);
  assert(!serd_sink_write_base(null_sink, base));
  assert(!serd_sink_write_prefix(null_sink, name, uri));
  assert(!serd_sink_write(null_sink, 0, base, uri, blank, NULL));
  assert(!serd_sink_write_end(null_sink, blank));
  serd_sink_free(null_sink);

  // Try again with a sink that has the event handler set

  SerdSink* sink = serd_sink_new(&state, NULL);
  serd_sink_set_base_func(sink, on_base);
  serd_sink_set_prefix_func(sink, on_prefix);
  serd_sink_set_statement_func(sink, on_statement);
  serd_sink_set_end_func(sink, on_end);

  assert(!serd_sink_write_base(sink, base));
  assert(serd_node_equals(state.last_base, base));

  assert(!serd_sink_write_prefix(sink, name, uri));
  assert(serd_node_equals(state.last_name, name));
  assert(serd_node_equals(state.last_namespace, uri));

  assert(!serd_sink_write(sink, 0, base, uri, blank, NULL));
  assert(serd_node_equals(state.last_subject, base));
  assert(serd_node_equals(state.last_predicate, uri));
  assert(serd_node_equals(state.last_object, blank));
  assert(!state.last_graph);

  assert(!serd_sink_write_end(sink, blank));
  assert(serd_node_equals(state.last_end, blank));

  serd_sink_free(sink);
  serd_env_free(env);
  serd_node_free(blank);
  serd_node_free(uri);
  serd_node_free(name);
  serd_node_free(base);
}

static void
test_free(void)
{
  // Free of null should (as always) not crash
  serd_sink_free(NULL);

  // Set up a sink with dynamically allocated data and a free function
  uintptr_t* data = (uintptr_t*)calloc(1, sizeof(uintptr_t));
  SerdSink*  sink = serd_sink_new(data, free);

  // Free the sink, which should free the data (rely on valgrind or sanitizers)
  serd_sink_free(sink);
}

int
main(void)
{
  test_callbacks();
  test_free();
  return 0;
}