/*
 * Keyman is copyright (C) SIL Global. MIT License.
 *
 * Created by Tim Eves on 2018-10-30
 *
 * Tests for the context API family of functions.
 */
#include <cstdlib>
#include <string>

#include "keyman_core.h"

#include "option.hpp"
#include "state.hpp"
#include "../../../src/kmx/kmx_xstring.h" //u16cmp
#include "mock/mock_processor.hpp"
#include <gtest/gtest.h>


// km_core_option_item const test_kb[] =
// {
//   {u"hello",     u"world", 0},
//   KM_CORE_OPTIONS_END
// };

km::core::path const test_kb_path = "/a/dummy/keyboard.mock";
km::core::mock_processor mock_processor(test_kb_path);

const std::string empty_json = "\
{\n\
    \"keyboard\" : {},\n\
    \"environment\" : {},\n\
    \"saved\" : {\n\
        \"keyboard\" : {},\n\
        \"environment\" : {}\n\
    }\n\
}\n";

TEST(km_core_options, verify_list_size) {
  km_core_option_item const api_mock_options[] = {
    {u"hello",   u"world", KM_CORE_OPT_KEYBOARD},
    {u"isdummy",     u"yes", KM_CORE_OPT_ENVIRONMENT},
    {u"testing",     u"maybe", KM_CORE_OPT_ENVIRONMENT},
    KM_CORE_OPTIONS_END
  };

  EXPECT_EQ(km_core_options_list_size(api_mock_options), 3);
}

GTEST_API_ int
main(int argc, char **argv) {
  testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}

TEST(km_core_options, test_empty_list) {
  km_core_option_item const empty_options_list[] = {KM_CORE_OPTIONS_END};

  // Simple sanity tests on an empty options and mock options with 3 items.
  EXPECT_EQ(km_core_options_list_size(empty_options_list), 0);

  km_core_state empty_state(mock_processor, empty_options_list);
  km_core_cu const *value;
  EXPECT_EQ(km_core_state_option_lookup(&empty_state, KM_CORE_OPT_ENVIRONMENT, u"isdummy", &value), KM_CORE_STATUS_KEY_ERROR);
}

TEST(km_core_options, test_json) {
  GTEST_SKIP();


  km_core_option_item const empty_options_list[] = {KM_CORE_OPTIONS_END};
  km_core_state empty_state(mock_processor, empty_options_list);

  size_t sz = 0;
  ASSERT_EQ(km_core_state_options_to_json(&empty_state, nullptr, &sz), KM_CORE_STATUS_OK);
  std::string buf(sz-1, 0);
  ASSERT_EQ(km_core_state_options_to_json(&empty_state, &buf[0], &sz), KM_CORE_STATUS_OK);
  EXPECT_EQ(buf, empty_json);
}

#define expect_opt_matches(state, scope, key, expected) {\
  km_core_cu const * actual = nullptr; \
  auto s = km_core_state_option_lookup(state, scope, key, &actual); \
  ASSERT_EQ(s, KM_CORE_STATUS_OK); \
  EXPECT_EQ(std::u16string(actual), std::u16string(expected)); \
}

TEST(km_core_options, test_setting_state) {
  km_core_option_item const test_env[] = {
    {u"test_env_option",   u"yes", 0},
    {u"testing",   u"maybe", 0},
    KM_CORE_OPTIONS_END
  };

  km_core_option_item const new_opts[] = {
    {u"test_env_option",   u"no", KM_CORE_OPT_ENVIRONMENT},
    {u"test_keyboard_option",     u"globe", KM_CORE_OPT_KEYBOARD},
    KM_CORE_OPTIONS_END
  };

  km_core_state test_state(mock_processor, test_env);

  expect_opt_matches(&test_state, KM_CORE_OPT_ENVIRONMENT, u"test_env_option", u"yes");
  expect_opt_matches(&test_state, KM_CORE_OPT_KEYBOARD, u"test_keyboard_option", u"default_value");
  ASSERT_EQ(km_core_state_options_update(&test_state, new_opts), KM_CORE_STATUS_OK);
  expect_opt_matches(&test_state, KM_CORE_OPT_ENVIRONMENT, u"test_env_option", u"no");
  expect_opt_matches(&test_state, KM_CORE_OPT_KEYBOARD, u"test_keyboard_option", u"globe");

  km_core_option_item bad_scope_opts[] = {
    {u"hello",   u"!", KM_CORE_OPT_UNKNOWN},
    KM_CORE_OPTIONS_END
  };
  EXPECT_EQ(km_core_state_options_update(&test_state, bad_scope_opts), KM_CORE_STATUS_INVALID_ARGUMENT);

  /*size_t sz = 0;
  ASSERT_EQ(km_core_state_options_to_json(&test_state, nullptr, &sz), KM_CORE_STATUS_OK);
  std::string buf(sz-1, 0);
  std::cout << sz << std::endl;
  ASSERT_EQ(km_core_state_options_to_json(&test_state, &buf[0], &sz), KM_CORE_STATUS_OK);


  const std::string mock_json = "\
{\n\
    \"keyboard\" : {\n\
        \"test_keyboard_option\" : \"default_value\"\n\
    },\n\
    \"environment\" : {\n\
        \"test_env_option\" : \"yes\"\n\
    },\n\
    \"saved\" : {\n\
        \"keyboard\" : {\n\
            \"test_keyboard_option\" : \"globe\"\n\
        },\n\
        \"environment\" : {\n\
            \"test_env_option\" : \"no\"\n\
        }\n\
    }\n\
}\n";

  EXPECT_EQ(buf, mock_json);*/
}