/*
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 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the copyright holder nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 */

#include <openthread/config.h>

#include "test_platform.h"
#include "test_util.hpp"

#include "common/num_utils.hpp"
#include "thread/mle_types.hpp"

namespace ot {

#if OPENTHREAD_FTD && OPENTHREAD_CONFIG_MLE_DEVICE_PROPERTY_LEADER_WEIGHT_ENABLE

void TestDefaultDeviceProperties(void)
{
    Instance                 *instance;
    const otDeviceProperties *props;
    uint8_t                   weight;

    instance = static_cast<Instance *>(testInitInstance());
    VerifyOrQuit(instance != nullptr);

    props = otThreadGetDeviceProperties(instance);

    VerifyOrQuit(props->mPowerSupply == OPENTHREAD_CONFIG_DEVICE_POWER_SUPPLY);
    VerifyOrQuit(!props->mSupportsCcm);
    VerifyOrQuit(!props->mIsUnstable);
    VerifyOrQuit(props->mLeaderWeightAdjustment == OPENTHREAD_CONFIG_MLE_DEFAULT_LEADER_WEIGHT_ADJUSTMENT);
#if OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE
    VerifyOrQuit(props->mIsBorderRouter);
#else
    VerifyOrQuit(!props->mIsBorderRouter);
#endif

    weight = 64;

    switch (props->mPowerSupply)
    {
    case OT_POWER_SUPPLY_BATTERY:
        weight -= 8;
        break;
    case OT_POWER_SUPPLY_EXTERNAL:
        break;
    case OT_POWER_SUPPLY_EXTERNAL_STABLE:
        weight += 4;
        break;
    case OT_POWER_SUPPLY_EXTERNAL_UNSTABLE:
        weight -= 4;
        break;
    }

    weight += props->mIsBorderRouter ? 1 : 0;

    VerifyOrQuit(otThreadGetLocalLeaderWeight(instance) == weight);

    printf("TestDefaultDeviceProperties passed\n");
}

void CompareDevicePropertiess(const otDeviceProperties &aFirst, const otDeviceProperties &aSecond)
{
    static constexpr int8_t kMinAdjustment = -16;
    static constexpr int8_t kMaxAdjustment = +16;

    VerifyOrQuit(aFirst.mPowerSupply == aSecond.mPowerSupply);
    VerifyOrQuit(aFirst.mIsBorderRouter == aSecond.mIsBorderRouter);
    VerifyOrQuit(aFirst.mSupportsCcm == aSecond.mSupportsCcm);
    VerifyOrQuit(aFirst.mIsUnstable == aSecond.mIsUnstable);
    VerifyOrQuit(Clamp(aFirst.mLeaderWeightAdjustment, kMinAdjustment, kMaxAdjustment) ==
                 Clamp(aSecond.mLeaderWeightAdjustment, kMinAdjustment, kMaxAdjustment));
}

void TestLeaderWeightCalculation(void)
{
    struct TestCase
    {
        otDeviceProperties mDeviceProperties;
        uint8_t            mExpectedLeaderWeight;
    };

    static const TestCase kTestCases[] = {
        {{OT_POWER_SUPPLY_BATTERY, false, false, false, 0}, 56},
        {{OT_POWER_SUPPLY_EXTERNAL, false, false, false, 0}, 64},
        {{OT_POWER_SUPPLY_EXTERNAL_STABLE, false, false, false, 0}, 68},
        {{OT_POWER_SUPPLY_EXTERNAL_UNSTABLE, false, false, false, 0}, 60},

        {{OT_POWER_SUPPLY_BATTERY, true, false, false, 0}, 57},
        {{OT_POWER_SUPPLY_EXTERNAL, true, false, false, 0}, 65},
        {{OT_POWER_SUPPLY_EXTERNAL_STABLE, true, false, false, 0}, 69},
        {{OT_POWER_SUPPLY_EXTERNAL_UNSTABLE, true, false, false, 0}, 61},

        {{OT_POWER_SUPPLY_BATTERY, true, true, false, 0}, 64},
        {{OT_POWER_SUPPLY_EXTERNAL, true, true, false, 0}, 72},
        {{OT_POWER_SUPPLY_EXTERNAL_STABLE, true, true, false, 0}, 76},
        {{OT_POWER_SUPPLY_EXTERNAL_UNSTABLE, true, true, false, 0}, 68},

        // Check when `mIsUnstable` is set.
        {{OT_POWER_SUPPLY_BATTERY, false, false, true, 0}, 56},
        {{OT_POWER_SUPPLY_EXTERNAL, false, false, true, 0}, 60},
        {{OT_POWER_SUPPLY_EXTERNAL_STABLE, false, false, true, 0}, 64},
        {{OT_POWER_SUPPLY_EXTERNAL_UNSTABLE, false, false, true, 0}, 60},

        {{OT_POWER_SUPPLY_BATTERY, true, false, true, 0}, 57},
        {{OT_POWER_SUPPLY_EXTERNAL, true, false, true, 0}, 61},
        {{OT_POWER_SUPPLY_EXTERNAL_STABLE, true, false, true, 0}, 65},
        {{OT_POWER_SUPPLY_EXTERNAL_UNSTABLE, true, false, true, 0}, 61},

        // Include non-zero `mLeaderWeightAdjustment`.
        {{OT_POWER_SUPPLY_BATTERY, true, false, false, 10}, 67},
        {{OT_POWER_SUPPLY_EXTERNAL, true, false, false, 10}, 75},
        {{OT_POWER_SUPPLY_EXTERNAL_STABLE, true, false, false, 10}, 79},
        {{OT_POWER_SUPPLY_EXTERNAL_UNSTABLE, true, false, false, 10}, 71},

        {{OT_POWER_SUPPLY_BATTERY, false, false, false, -10}, 46},
        {{OT_POWER_SUPPLY_EXTERNAL, false, false, false, -10}, 54},
        {{OT_POWER_SUPPLY_EXTERNAL_STABLE, false, false, false, -10}, 58},
        {{OT_POWER_SUPPLY_EXTERNAL_UNSTABLE, false, false, false, -10}, 50},

        // Use `mLeaderWeightAdjustment` larger than valid range
        // Make sure it clamps to -16 and +16.
        {{OT_POWER_SUPPLY_BATTERY, false, false, false, 20}, 72},
        {{OT_POWER_SUPPLY_EXTERNAL, false, false, false, 20}, 80},
        {{OT_POWER_SUPPLY_EXTERNAL_STABLE, false, false, false, 20}, 84},
        {{OT_POWER_SUPPLY_EXTERNAL_UNSTABLE, false, false, false, 20}, 76},

        {{OT_POWER_SUPPLY_BATTERY, true, false, false, -20}, 41},
        {{OT_POWER_SUPPLY_EXTERNAL, true, false, false, -20}, 49},
        {{OT_POWER_SUPPLY_EXTERNAL_STABLE, true, false, false, -20}, 53},
        {{OT_POWER_SUPPLY_EXTERNAL_UNSTABLE, true, false, false, -20}, 45},
    };

    Instance *instance;

    instance = static_cast<Instance *>(testInitInstance());
    VerifyOrQuit(instance != nullptr);

    for (const TestCase &testCase : kTestCases)
    {
        otThreadSetDeviceProperties(instance, &testCase.mDeviceProperties);
        CompareDevicePropertiess(testCase.mDeviceProperties, *otThreadGetDeviceProperties(instance));
        VerifyOrQuit(otThreadGetLocalLeaderWeight(instance) == testCase.mExpectedLeaderWeight);
    }

    printf("TestLeaderWeightCalculation passed\n");
}

#endif // #if OPENTHREAD_FTD && OPENTHREAD_CONFIG_MLE_DEVICE_PROPERTY_LEADER_WEIGHT_ENABLE

} // namespace ot

int main(void)
{
#if OPENTHREAD_FTD && OPENTHREAD_CONFIG_MLE_DEVICE_PROPERTY_LEADER_WEIGHT_ENABLE
    ot::TestDefaultDeviceProperties();
    ot::TestLeaderWeightCalculation();
#endif

    printf("All tests passed\n");
    return 0;
}