// Copyright(c) 2018-2020, Intel Corporation
//
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extern "C" {

#include <fcntl.h>
#include <json-c/json.h>
#include <stdlib.h>
#include <uuid/uuid.h>
#include "opae_int.h"
#include "types_int.h"
}

#include <config.h>
#include <opae/fpga.h>

#include <dlfcn.h>
#include <array>
#include <cstdlib>
#include <cstring>
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "gtest/gtest.h"
#include "metrics/bmc/bmc.h"
#include "metrics/bmc/bmc_ioctl.h"
#include "metrics/bmc/bmcdata.h"
#include "metrics/bmc/bmcinfo.h"
#include "sysfs_int.h"
#include "mock/test_system.h"
#include "mock/test_utils.h"
#include "token_list_int.h"
#include "xfpga.h"

extern "C" {
int xfpga_plugin_initialize(void);
int xfpga_plugin_finalize(void);
}

using namespace opae::testing;

class bmc_c_p : public ::testing::TestWithParam<std::string> {
  protected:
    bmc_c_p() 
      : tokens_{{nullptr, nullptr}}, 
        handle_(nullptr) {}

  virtual void SetUp() override {
    ASSERT_TRUE(test_platform::exists(GetParam()));
    platform_ = test_platform::get(GetParam());
    system_ = test_system::instance();
    system_->initialize();
    system_->prepare_syfs(platform_);
    ASSERT_EQ(xfpga_plugin_initialize(), FPGA_OK);

    ASSERT_EQ(xfpga_fpgaGetProperties(nullptr, &filter_), FPGA_OK);
    ASSERT_EQ(fpgaPropertiesSetObjectType(filter_, FPGA_DEVICE), FPGA_OK);
    ASSERT_EQ(xfpga_fpgaEnumerate(&filter_, 1, tokens_.data(), tokens_.size(),
                                  &num_matches_), FPGA_OK);
    ASSERT_GT(num_matches_, 0);
    ASSERT_EQ(xfpga_fpgaOpen(tokens_[0], &handle_, 0), FPGA_OK);
  }

  virtual void TearDown() override {
    EXPECT_EQ(fpgaDestroyProperties(&filter_), FPGA_OK);
    for (auto &t : tokens_) {
      if (t) {
        EXPECT_EQ(xfpga_fpgaDestroyToken(&t), FPGA_OK);
        t = nullptr;
      }
    }
    if (handle_ != nullptr) {
      EXPECT_EQ(xfpga_fpgaClose(handle_), FPGA_OK);
      handle_ = nullptr;
    }
    xfpga_plugin_finalize();
    system_->finalize();
  }

  fpga_result write_sysfs_file(fpga_token token, const char *file, void *buf,
                               size_t count);

  std::array<fpga_token, 2> tokens_;
  fpga_handle handle_;
  fpga_properties filter_;
  uint32_t num_matches_;
  test_platform platform_;
  test_system *system_;
};

fpga_result bmc_c_p::write_sysfs_file(fpga_token token, const char *file,
                                      void *buf, size_t count) {
  fpga_result res = FPGA_OK;
  char sysfspath[SYSFS_PATH_MAX] = { 0, };
  int fd = 0;
  size_t len;

  struct _fpga_token *tok = (struct _fpga_token *)token;
  if (FPGA_TOKEN_MAGIC != tok->magic) {
    return FPGA_INVALID_PARAM;
  }

  len = strnlen(tok->sysfspath, sizeof(sysfspath) - 1);
  strncpy(sysfspath, tok->sysfspath, len + 1);
  strncat(sysfspath, "/", 2);
  len = strnlen(file, sizeof(sysfspath) - (len + 1));
  strncat(sysfspath, file, len + 1);

  glob_t pglob;
  int gres = glob(sysfspath, GLOB_NOSORT, NULL, &pglob);
  if ((gres) || (1 != pglob.gl_pathc)) {
    globfree(&pglob);
    return FPGA_NOT_FOUND;
  }
  fd = open(pglob.gl_pathv[0], O_WRONLY);
  globfree(&pglob);
  if (fd < 0) {
    printf("open faild \n");
    return FPGA_NOT_FOUND;
  }

  ssize_t total_written = eintr_write(fd, buf, count);
  printf("count %ld \n", count);
  printf("total_written %ld \n", total_written);

  if (total_written == 0) {
    close(fd);
    printf("total_written faild \n");
    return FPGA_INVALID_PARAM;
  }

  close(fd);

  return res;
}

/**
 * @test       bmc
 * @brief      Tests: bmcGetLastResetCause,
 *....................bmcGetFirmwareVersion
 *....................bmcGetLastPowerdownCause functions
 * @details    Validates bmc reset cause ,power down cause
 *.....................bmc version
 *
 */
TEST_P(bmc_c_p, test_bmc_1) {
  uint32_t version = 0;
  char *string = NULL;

  // Get Reset & Power down cause

  EXPECT_EQ(bmcGetLastResetCause(tokens_[0], &string), FPGA_OK);
  if (string) {
    free(string);
    string = NULL;
  }
  EXPECT_NE(bmcGetLastResetCause(tokens_[0], NULL), FPGA_OK);

  EXPECT_EQ(bmcGetLastPowerdownCause(tokens_[0], &string), FPGA_OK);
  if (string) {
    free(string);
    string = NULL;
  }
  EXPECT_NE(bmcGetLastPowerdownCause(tokens_[0], NULL), FPGA_OK);

  // Get firmware version
  EXPECT_EQ(bmcGetFirmwareVersion(tokens_[0], &version), FPGA_OK);
  printf("bmc version=%d \n", version);

  EXPECT_NE(bmcGetFirmwareVersion(tokens_[0], NULL), FPGA_OK);
}

/**
 * @test       bmc
 * @brief      Tests: bmcLoadSDRs,
 *....................bmcReadSensorValues,
 *....................bmcGetSDRDetails,
 *....................bmcGetSensorReading,
 *....................rawFromDouble,
 *....................bmcDestroySensorValues,
 *....................bmcDestroySDRs functions
 * @details    Validates bmc load SDR and Read sensor values
 *
 */
TEST_P(bmc_c_p, test_bmc_2) {
  bmc_sdr_handle sdrs = NULL;
  bmc_values_handle values = NULL;
  uint32_t num_sensors = 0;
  uint32_t num_values = 0;
  uint32_t i = 0;
  uint32_t is_valid = 0;
  double tmp = 0;
  uint8_t raw = 0;
  sdr_details details;

  memset(&details, 0, sizeof(sdr_details));

  // Load SDR
  EXPECT_EQ(bmcLoadSDRs(tokens_[0], &sdrs, &num_sensors), FPGA_OK);
  EXPECT_EQ(bmcReadSensorValues(sdrs, &values, &num_values), FPGA_OK);

  // Read sensor details & value
  for (i = 0; i < num_sensors; i++) {
    EXPECT_EQ(bmcGetSDRDetails(values, i, &details), FPGA_OK);
    EXPECT_EQ(bmcGetSensorReading(values, i, &is_valid, &tmp), FPGA_OK);

    Values detail;
    memset(&detail, 0, sizeof(detail));
    EXPECT_EQ(rawFromDouble(&detail, tmp, &raw), FPGA_OK);

    detail.result_exp = 2;
    EXPECT_EQ(rawFromDouble(&detail, tmp, &raw), FPGA_OK);

    detail.result_exp = -2;
    EXPECT_EQ(rawFromDouble(&detail, tmp, &raw), FPGA_OK);
  }

  // Destroy Sensor values & SDR
  EXPECT_EQ(bmcDestroySensorValues(&values), FPGA_OK);
  EXPECT_EQ(bmcDestroySDRs(&sdrs), FPGA_OK);
}

/**
 * @test       bmc
 * @brief      Tests: bmcThresholdsTripped,
 *....................bmcDestroyTripped functions
 * @details    Validates bmc threshold trip
 *
 */
TEST_P(bmc_c_p, test_bmc_3) {
  bmc_sdr_handle sdrs = NULL;
  bmc_values_handle values = NULL;
  uint32_t num_sensors = 0;
  uint32_t num_values = 0;
  tripped_thresholds *tripped = NULL;
  uint32_t num_tripped = 0;
  sdr_details details;

  memset(&details, 0, sizeof(details));
  // Load SDR
  EXPECT_EQ(bmcLoadSDRs(tokens_[0], &sdrs, &num_sensors), FPGA_OK);
  EXPECT_EQ(bmcReadSensorValues(sdrs, &values, &num_values), FPGA_OK);

  // Get threshold trip point
  EXPECT_EQ(bmcThresholdsTripped(values, &tripped, &num_tripped), FPGA_OK);
  printf("num_tripped = %d \n", num_tripped);

  struct _bmc_values *vals = (struct _bmc_values *)values;
  for (uint32_t i = 0; i < vals->num_records; i++) {
    vals->contents[i].threshold_events._value = 1;
  }

  // Get threshold trip point
  EXPECT_EQ(bmcThresholdsTripped(values, &tripped, &num_tripped), FPGA_OK);
  printf("num_tripped = %d \n", num_tripped);

  // Destroy Threshold
  EXPECT_EQ(bmcDestroyTripped(tripped), FPGA_OK);

  EXPECT_EQ(bmcDestroySensorValues(&values), FPGA_OK);
  EXPECT_EQ(bmcDestroySDRs(&sdrs), FPGA_OK);
}

/**
 * @test       bmc
 * @brief      Tests: bmcSetHWThresholds,
 *..................._bmcGetThreshold
 *..................._bmcGetThreshold
 *................. .fill_set_request fucntions
 * @details    Validates bmc set and get thresholds
 *
 */
TEST_P(bmc_c_p, test_bmc_4) {
  bmc_sdr_handle sdrs = NULL;
  bmc_values_handle values = NULL;
  uint32_t num_sensors = 0;
  uint32_t num_values = 0;
  sdr_details details;

  memset(&details, 0, sizeof(details));
  // Load SDR
  EXPECT_EQ(bmcLoadSDRs(tokens_[0], &sdrs, &num_sensors), FPGA_OK);
  EXPECT_EQ(bmcReadSensorValues(sdrs, &values, &num_values), FPGA_OK);

  threshold_list thresh;

  memset(&thresh, 0, sizeof(thresh));
  thresh.upper_nr_thresh.is_valid = 1;
  thresh.upper_nr_thresh.value = 20;

  EXPECT_NE(bmcSetHWThresholds(sdrs, 1, &thresh), FPGA_OK);

  // Destroy sensor value and SDR
  EXPECT_EQ(bmcDestroySensorValues(&values), FPGA_OK);
  EXPECT_EQ(bmcDestroySDRs(&sdrs), FPGA_OK);

  // Set & Get  threshold
  bmc_get_thresh_response thres;
  _bmcGetThreshold(1, 1, &thres);

  bmc_set_thresh_request req;
  _bmcSetThreshold(1, 1, &req);

  Values vals;
  memset(&vals, 0, sizeof(vals));
  fill_set_request(&vals, &thresh, &req);

  thresh.upper_nr_thresh.is_valid = true;
  thresh.upper_c_thresh.is_valid = true;
  thresh.upper_nc_thresh.is_valid = true;
  thresh.lower_nr_thresh.is_valid = true;
  thresh.lower_c_thresh.is_valid = true;
  thresh.lower_nc_thresh.is_valid = true;

  fill_set_request(&vals, &thresh, &req);

  thresh.upper_nr_thresh.is_valid = false;
  thresh.upper_c_thresh.is_valid = false;
  thresh.upper_nc_thresh.is_valid = false;
  thresh.lower_nr_thresh.is_valid = false;
  thresh.lower_c_thresh.is_valid = false;
  thresh.lower_nc_thresh.is_valid = false;

  fill_set_request(&vals, &thresh, &req);

  thresh.upper_nr_thresh.is_valid = false;
  fill_set_request(&vals, &thresh, &req);
}

/**
 * @test       bmc
 * @brief      Tests: bmcGetLastResetCause
 * @details    Validates reset cause
 *
 */
TEST_P(bmc_c_p, test_bmc_5) {
  uint32_t tot_bytes_ret = 0;
  char *string = NULL;
  void *buf = NULL;

  read_sysfs_file(
      tokens_[0],
      (const char *)"/sys/class/fpga/intel-fpga-dev.0/intel-fpga-fme.0/",
      (void **)&buf, &tot_bytes_ret);

  // write to reset cause
  reset_cause reset;
  memset(&reset, 0, sizeof(reset_cause));
  reset.completion_code = 1;
  write_sysfs_file(tokens_[0], SYSFS_RESET_FILE, (void *)(&reset),
                   sizeof(reset_cause));

  EXPECT_NE(bmcGetLastResetCause(tokens_[0], &string), FPGA_OK);
  printf("string= %s", string);
  if (string) {
    free(string);
    string = NULL;
  }

  reset.completion_code = 0;
  reset.reset_cause = CHIP_RESET_CAUSE_EXTRST;
  write_sysfs_file(tokens_[0], SYSFS_RESET_FILE, (void *)(&reset),
                   sizeof(reset_cause));
  EXPECT_EQ(bmcGetLastResetCause(tokens_[0], &string), FPGA_OK);
  printf("string= %s", string);
  if (string) {
    free(string);
    string = NULL;
  }

  reset.reset_cause = CHIP_RESET_CAUSE_BOD_IO;
  write_sysfs_file(tokens_[0], SYSFS_RESET_FILE, (void *)(&reset),
                   sizeof(reset_cause));
  EXPECT_EQ(bmcGetLastResetCause(tokens_[0], &string), FPGA_OK);
  printf("string= %s", string);
  if (string) {
    free(string);
    string = NULL;
  }

  reset.reset_cause = CHIP_RESET_CAUSE_OCD;
  write_sysfs_file(tokens_[0], SYSFS_RESET_FILE, (void *)(&reset),
                   sizeof(reset_cause));
  EXPECT_EQ(bmcGetLastResetCause(tokens_[0], &string), FPGA_OK);
  printf("string= %s", string);
  if (string) {
    free(string);
    string = NULL;
  }

  reset.reset_cause = CHIP_RESET_CAUSE_POR;
  write_sysfs_file(tokens_[0], SYSFS_RESET_FILE, (void *)(&reset),
                   sizeof(reset_cause));
  EXPECT_EQ(bmcGetLastResetCause(tokens_[0], &string), FPGA_OK);
  printf("string= %s", string);
  if (string) {
    free(string);
    string = NULL;
  }

  reset.reset_cause = CHIP_RESET_CAUSE_SOFT;
  write_sysfs_file(tokens_[0], SYSFS_RESET_FILE, (void *)(&reset),
                   sizeof(reset_cause));
  EXPECT_EQ(bmcGetLastResetCause(tokens_[0], &string), FPGA_OK);
  printf("string= %s", string);
  if (string) {
    free(string);
    string = NULL;
  }

  reset.reset_cause = CHIP_RESET_CAUSE_SPIKE;
  write_sysfs_file(tokens_[0], SYSFS_RESET_FILE, (void *)(&reset),
                   sizeof(reset_cause));
  EXPECT_EQ(bmcGetLastResetCause(tokens_[0], &string), FPGA_OK);
  printf("string= %s", string);
  if (string) {
    free(string);
    string = NULL;
  }

  reset.reset_cause = CHIP_RESET_CAUSE_WDT;
  write_sysfs_file(tokens_[0], SYSFS_RESET_FILE, (void *)(&reset),
                   sizeof(reset_cause));
  EXPECT_EQ(bmcGetLastResetCause(tokens_[0], &string), FPGA_OK);
  printf("string= %s", string);
  if (string) {
    free(string);
    string = NULL;
  }
}

/**
 * @test       bmc
 * @brief      Tests: bmcGetLastPowerdownCause
 *...................bmcGetFirmwareVersion functions
 * @details    Validates power down cause & FW version
 *
 */
TEST_P(bmc_c_p, test_bmc_6) {
  powerdown_cause reset;
  char *string = NULL;
  device_id dev_id;

  memset(&reset, 0, sizeof(powerdown_cause));
  memset(&dev_id, 0, sizeof(device_id));
  reset.completion_code = 1;
  write_sysfs_file(tokens_[0], SYSFS_PWRDN_FILE, (void *)(&reset),
                   sizeof(powerdown_cause));
  EXPECT_NE(bmcGetLastPowerdownCause(tokens_[0], &string), FPGA_OK);
  if (string) {
    printf("string= %s", string);
    free(string);
    string = NULL;
  }

  dev_id.completion_code = 1;
  uint32_t version;
  write_sysfs_file(tokens_[0], SYSFS_DEVID_FILE, (void *)(&dev_id),
                   sizeof(device_id));
  EXPECT_NE(bmcGetFirmwareVersion(tokens_[0], &version), FPGA_OK);
}

/**
 * @test       bmc
 * @brief      Tests: bmc_build_values
 * @details    Validates build values
 *
 */
TEST_P(bmc_c_p, test_bmc_7) {
  sensor_reading reading;
  sdr_header header;
  sdr_key key;
  sdr_body body;
  Values *vals = NULL;

  memset(&reading, 0, sizeof(sensor_reading));
  memset(&key, 0, sizeof(sdr_key));
  memset(&header, 0, sizeof(sdr_header));
  memset(&body, 0, sizeof(sdr_body));

  // build bmc values
  reading.sensor_validity.sensor_state.sensor_scanning_disabled = true;
  vals = bmc_build_values(&reading, &header, &key, &body);
  if (vals) {
    free(vals->name);
    free(vals);
    vals = NULL;
  }

  reading.sensor_validity.sensor_state.sensor_scanning_disabled = false;
  reading.sensor_validity.sensor_state.event_messages_disabled = true;
  vals = bmc_build_values(&reading, &header, &key, &body);
  if (vals) {
    free(vals->name);
    free(vals);
    vals = NULL;
  }

  reading.sensor_validity.sensor_state.sensor_scanning_disabled = false;
  reading.sensor_validity.sensor_state.event_messages_disabled = false;
  vals = bmc_build_values(&reading, &header, &key, &body);
  if (vals) {
    free(vals->name);
    free(vals);
    vals = NULL;
  }

  body.id_string_type_length_code.bits.format = ASCII_8;
  body.id_string_type_length_code.bits.len_in_characters = 0;
  vals = bmc_build_values(&reading, &header, &key, &body);
  if (vals) {
    free(vals->name);
    free(vals);
    vals = NULL;
  }

  body.sensor_units_1.bits.analog_data_format = 0x3;
  vals = bmc_build_values(&reading, &header, &key, &body);
  if (vals) {
    free(vals->name);
    free(vals);
    vals = NULL;
  }

  body.sensor_units_2 = 0xff;
  vals = bmc_build_values(&reading, &header, &key, &body);
  if (vals) {
    free(vals->name);
    free(vals);
    vals = NULL;
  }
}

INSTANTIATE_TEST_CASE_P(bmc_c, bmc_c_p,
                        ::testing::ValuesIn(test_platform::mock_platforms({"dcp-rc"})));