#include "sensors/host.hpp"

#include <chrono>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <memory>
#include <sdbusplus/test/sdbus_mock.hpp>
#include <string>
#include <vector>

#include "test/helpers.hpp"

using ::testing::IsNull;
using ::testing::Return;
using ::testing::StrEq;

TEST(HostSensorTest, BoringConstructorTest) {
    // WARN: The host sensor is not presently meant to be created this way,
    // TODO: Can I move the constructor into private?
}

TEST(HostSensorTest, CreateHostTempSensorTest) {
    // The normal case for this sensor is to be a temperature sensor, where
    // the value is treated as a margin sensor.

    sdbusplus::SdBusMock sdbus_mock;
    auto bus_mock = sdbusplus::get_mocked_new(&sdbus_mock);
    std::string name = "fleeting0";
    int64_t timeout = 1;
    const char *objPath = "/asdf/asdf0";
    bool defer = false;
    std::string interface = "xyz.openbmc_project.Sensor.Value";

    // Scale is the only property we change in the code.  Also,
    // emit_object_added isn't called twice.
    // Temperature is the default for type, and everything, so those aren't
    // updated.
    std::vector<std::string> properties = {"Scale"};
    int i;

    // The CreateTemp updates all the properties, however, only Scale is set
    // to non-default.
    SetupDbusObject(
        &sdbus_mock,
        defer,
        objPath,
        interface,
        properties,
        &i);

    // This is called during object destruction.
    EXPECT_CALL(sdbus_mock,
                sd_bus_emit_object_removed(IsNull(), StrEq(objPath)))
        .WillOnce(Return(0));

    std::unique_ptr<Sensor> s = HostSensor::CreateTemp(
        name, timeout, bus_mock, objPath, defer);
}

TEST(HostSensorTest, VerifyWriteThenReadMatches) {
    // Verify that when value is updated, the information matches
    // what we expect when read back.

    sdbusplus::SdBusMock sdbus_mock;
    auto bus_mock = sdbusplus::get_mocked_new(&sdbus_mock);
    std::string name = "fleeting0";
    int64_t timeout = 1;
    const char *objPath = "/asdf/asdf0";
    bool defer = false;
    std::string interface = "xyz.openbmc_project.Sensor.Value";

    // Scale is the only property we change in the code.  Also,
    // emit_object_added isn't called twice.
    // Temperature is the default for type, and everything, so those aren't
    // updated.
    std::vector<std::string> properties = {"Scale"};
    int i;

    SetupDbusObject(
        &sdbus_mock,
        defer,
        objPath,
        interface,
        properties,
        &i);

    EXPECT_CALL(sdbus_mock,
                sd_bus_emit_object_removed(IsNull(), StrEq(objPath)))
        .WillOnce(Return(0));

    std::unique_ptr<Sensor> s = HostSensor::CreateTemp(
        name, timeout, bus_mock, objPath, defer);

    // Value is updated from dbus calls only (normally).
    HostSensor *hs = static_cast<HostSensor *>(s.get());
    int64_t new_value = 2;

    ReadReturn r = hs->read();
    EXPECT_EQ(r.value, 0);

    EXPECT_CALL(sdbus_mock,
                    sd_bus_emit_properties_changed_strv(
                    IsNull(),
                    StrEq(objPath),
                    StrEq(interface),
                    NotNull()))
        .WillOnce(
            Invoke([=](sd_bus *bus,
                       const char *path,
                       const char *interface,
                       char **names) {
                EXPECT_STREQ("Value", names[0]);
                return 0;
            })
        );

    std::chrono::high_resolution_clock::time_point t1 =
        std::chrono::high_resolution_clock::now();

    hs->value(new_value);
    r = hs->read();
    EXPECT_EQ(r.value, new_value * 0.001);

    auto duration = std::chrono::duration_cast<std::chrono::seconds>(
        t1 - r.updated).count();

    // Verify it was updated within the last second.
    EXPECT_TRUE(duration < 1);
}