//MIT License
//
//Copyright (c) 2017 Mindaugas Vinkelis
//
//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:
//
//The above copyright notice and this permission notice shall be included in all
//copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//SOFTWARE.

#include <gmock/gmock.h>
#include "serialization_test_utils.h"


#if __cplusplus > 201402L

#include <optional>
#include <bitsery/ext/std_optional.h>
#include <bitsery/ext/value_range.h>


using StdOptional = bitsery::ext::StdOptional;

using testing::Eq;

using BPSer = bitsery::BasicSerializer<Writer, true>;
using BPDes = bitsery::BasicDeserializer<Reader, true>;

template <typename T>
void test(SerializationContext& ctx, const T& v, T& r) {
    ctx.createSerializer().ext4b(v, StdOptional{});
    ctx.createDeserializer().ext4b(r, StdOptional{});
}

TEST(SerializeExtensionStdOptional, EmptyOptional) {
    std::optional<int32_t> t1{};
    std::optional<int32_t> r1{};

    SerializationContext ctx1;
    test(ctx1,t1, r1);
    EXPECT_THAT(ctx1.getBufferSize(), Eq(1));
    EXPECT_THAT(t1, Eq(r1));


    r1 = 3;
    SerializationContext ctx2;
    test(ctx2,t1, r1);
    EXPECT_THAT(ctx2.getBufferSize(), Eq(1));
    EXPECT_THAT(t1, Eq(r1));
}

TEST(SerializeExtensionStdOptional, OptionalHasValue) {
    std::optional<int32_t> t1{43};
    std::optional<int32_t> r1{52};

    SerializationContext ctx1;
    test(ctx1,t1, r1);
    EXPECT_THAT(ctx1.getBufferSize(), Eq(1 + sizeof(int)));
    EXPECT_THAT(t1.value(), Eq(r1.value()));

    r1 = std::optional<int>{};
    SerializationContext ctx2;
    test(ctx2,t1, r1);
    EXPECT_THAT(ctx2.getBufferSize(), Eq(1 + sizeof(int)));
    EXPECT_THAT(t1.value(), Eq(r1.value()));

}

TEST(SerializeExtensionStdOptional, AlignAfterStateWriteRead) {
    std::optional<int32_t> t1{43};
    std::optional<int32_t> r1{52};
    auto range = bitsery::ext::ValueRange<int>{40,60};

    SerializationContext ctx;
    ctx.createSerializer().enableBitPacking([&t1, &range](BPSer& ser) {

        ser.ext(t1, StdOptional(true), [&ser, &range](int32_t& v) {
            ser.ext(v, range);
        });
    });
    ctx.createDeserializer().enableBitPacking([&r1, &range](BPDes& des) {
        des.ext(r1, StdOptional(true), [&des, &range](int32_t& v) {
            des.ext(v, range);
        });
    });

    EXPECT_THAT(ctx.getBufferSize(), Eq(2));//1byte for index + 1byte for value
    EXPECT_THAT(t1.value(), Eq(r1.value()));
}

TEST(SerializeExtensionStdOptional, NoAlignAfterStateWriteRead) {
    std::optional<int32_t> t1{43};
    std::optional<int32_t> r1{52};
    auto range = bitsery::ext::ValueRange<int>{40,60};

    SerializationContext ctx;
    ctx.createSerializer().enableBitPacking([&t1, &range](BPSer& ser) {
        ser.ext(t1, StdOptional(false), [&ser, &range](int32_t& v) {
            ser.ext(v, range);
        });
    });
    ctx.createDeserializer().enableBitPacking([&r1, &range](BPDes& des) {
        des.ext(r1, StdOptional(false), [&des, &range](int32_t& v) {
            des.ext(v, range);
        });
    });


    EXPECT_THAT(range.getRequiredBits() + 1, ::testing::Lt(8));
    EXPECT_THAT(ctx.getBufferSize(), Eq(1));
    EXPECT_THAT(t1.value(), Eq(r1.value()));
}



#endif