/*
  Copyright 2011-2020 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 <stdint.h>
#include <stdio.h>
#include <string.h>

static SerdStatus
count_statements(void* handle, const SerdEvent* event)
{
  if (event->type == SERD_STATEMENT) {
    ++*(size_t*)handle;
  }

  return SERD_SUCCESS;
}

static void
test_writer(const char* const path)
{
  FILE*    fd  = fopen(path, "wb");
  SerdEnv* env = serd_env_new(SERD_EMPTY_STRING());
  assert(fd);

  SerdWorld* world = serd_world_new();
  SerdNodes* nodes = serd_world_nodes(world);

  SerdOutputStream output = serd_open_output_file(path);

  SerdWriter* writer =
    serd_writer_new(world, SERD_TURTLE, SERD_WRITE_LAX, env, &output, 1);

  assert(writer);

  const SerdNode* lit = serd_nodes_string(nodes, SERD_STRING("hello"));

  const SerdSink* const iface = serd_writer_sink(writer);
  assert(serd_sink_write_base(iface, lit));
  assert(serd_sink_write_prefix(iface, lit, lit));
  assert(serd_sink_write_end(iface, lit));

  static const uint8_t bad_buf[]    = {0xEF, 0xBF, 0xBD, 0};
  const SerdStringView bad_buf_view = {(const char*)bad_buf, 3};

  const SerdNode* s = serd_nodes_uri(nodes, SERD_STRING("http://example.org"));
  const SerdNode* p =
    serd_nodes_uri(nodes, SERD_STRING("http://example.org/pred"));

  const SerdNode* bad = serd_nodes_string(nodes, bad_buf_view);

  // Write 3 invalid statements (should write nothing)
  const SerdNode* junk[][3] = {{s, bad, bad}, {bad, p, bad}, {s, bad, p}};
  for (size_t i = 0; i < sizeof(junk) / (sizeof(SerdNode*) * 3); ++i) {
    assert(serd_sink_write(iface, 0, junk[i][0], junk[i][1], junk[i][2], NULL));
  }

  static const SerdStringView urn_Type = SERD_STRING("urn:Type");
  static const SerdStringView en       = SERD_STRING("en");

  const SerdNode* const o = serd_nodes_string(nodes, SERD_STRING("o"));
  const SerdNode* const t =
    serd_nodes_literal(nodes, SERD_STRING("t"), SERD_HAS_DATATYPE, urn_Type);

  const SerdNode* const l =
    serd_nodes_literal(nodes, SERD_STRING("l"), SERD_HAS_LANGUAGE, en);

  const SerdNode* good[][3] = {{s, p, o}, {s, p, t}, {s, p, l}};

  for (size_t i = 0; i < sizeof(good) / (sizeof(SerdNode*) * 3); ++i) {
    assert(
      !serd_sink_write(iface, 0, good[i][0], good[i][1], good[i][2], NULL));
  }

  static const uint8_t     bad_str_buf[] = {0xFF, 0x90, 'h', 'i', 0};
  static const uint8_t     bad_uri_buf[] = {'f', 't', 'p', ':', 0xFF, 0x90, 0};
  static const char* const bad_lit_str   = (const char*)bad_str_buf;
  static const char* const bad_uri_str   = (const char*)bad_uri_buf;

  // Write statements with bad UTF-8 (should be replaced)
  const SerdNode* bad_lit = serd_nodes_string(nodes, SERD_STRING(bad_lit_str));
  const SerdNode* bad_uri = serd_nodes_uri(nodes, SERD_STRING(bad_uri_str));
  assert(!serd_sink_write(iface, 0, s, p, bad_lit, 0));
  assert(!serd_sink_write(iface, 0, s, p, bad_uri, 0));

  // Write 1 valid statement
  const SerdNode* const hello = serd_nodes_string(nodes, SERD_STRING("hello"));
  assert(!serd_sink_write(iface, 0, s, p, hello, 0));

  serd_writer_free(writer);
  serd_close_output(&output);

  // Test buffer sink
  SerdBuffer buffer = {NULL, 0};

  output = serd_open_output_buffer(&buffer);
  writer = serd_writer_new(world, SERD_TURTLE, 0, env, &output, 1);

  const SerdNode* const base =
    serd_nodes_uri(nodes, SERD_STRING("http://example.org/base"));

  serd_writer_set_base_uri(writer, base);

  serd_writer_free(writer);
  serd_close_output(&output);
  char* out = (char*)buffer.buf;

  assert(out);
  assert(!strcmp(out, "@base <http://example.org/base> .\n"));
  serd_free(out);

  serd_env_free(env);
  serd_world_free(world);
}

static void
test_reader(const char* path)
{
  SerdWorld*      world        = serd_world_new();
  size_t          n_statements = 0;
  SerdSink* const sink = serd_sink_new(&n_statements, count_statements, NULL);
  assert(sink);

  SerdEnv* const env = serd_env_new(SERD_EMPTY_STRING());
  assert(env);

  // Test that too little stack space fails gracefully
  assert(!serd_reader_new(world, SERD_TURTLE, 0u, env, sink, 32));
  SerdReader* reader = serd_reader_new(world, SERD_TURTLE, 0u, env, sink, 4096);
  assert(reader);

  assert(serd_reader_read_document(reader) == SERD_BAD_CALL);
  assert(serd_reader_read_chunk(reader) == SERD_BAD_CALL);

  SerdInputStream in = serd_open_input_file(path);
  assert(!serd_reader_start(reader, &in, NULL, 4096));
  assert(!serd_reader_read_document(reader));
  assert(n_statements == 6);
  serd_reader_finish(reader);
  serd_close_input(&in);

  serd_reader_free(reader);
  serd_env_free(env);
  serd_sink_free(sink);
  serd_world_free(world);
}

int
main(void)
{
  const char* const path = "serd_test.ttl";
  test_writer(path);
  test_reader(path);

  printf("Success\n");
  return 0;
}