#include <doctest/doctest.h>

#include "ccm/games/yugioh/YuGiOhSetSource.hpp"
#include "ccm/ports/IHttpClient.hpp"

using namespace ccm;

namespace {

class FixedHttpClient final : public IHttpClient {
public:
    std::string lastUrl;
    std::string body;
    bool ok = true;
    Result<std::string> get(std::string_view url) override {
        lastUrl = std::string(url);
        return ok ? Result<std::string>::ok(body)
                  : Result<std::string>::err("offline");
    }
};

}  // namespace

TEST_SUITE("YuGiOhSetSource::parseResponse") {
    TEST_CASE("maps set_code/set_name/tcg_date") {
        const std::string json = R"([
            {"set_name":"Set A","set_code":"AAA","tcg_date":"2020-01-01"},
            {"set_name":"Set B","set_code":"BBB","tcg_date":"2021-02-03"}
        ])";
        const auto out = YuGiOhSetSource::parseResponse(json);
        REQUIRE(out.isOk());
        bool foundA = false;
        bool foundB = false;
        for (const auto& set : out.value()) {
            if (set.id == "AAA" && set.name == "Set A" && set.releaseDate == "2020/01/01") {
                foundA = true;
            }
            if (set.id == "BBB" && set.name == "Set B" && set.releaseDate == "2021/02/03") {
                foundB = true;
            }
        }
        CHECK(foundA);
        CHECK(foundB);
    }

    TEST_CASE("sorts by release date ascending") {
        const auto out = YuGiOhSetSource::parseResponse(R"([
            {"set_name":"New","set_code":"N","tcg_date":"2024-01-01"},
            {"set_name":"Old","set_code":"O","tcg_date":"2010-01-01"}
        ])");
        REQUIRE(out.isOk());
        CHECK(out.value().front().id == "O");
        CHECK(out.value().back().id == "N");
    }

    TEST_CASE("missing array returns error") {
        CHECK(YuGiOhSetSource::parseResponse(R"({"data":[]})").isErr());
    }

    TEST_CASE("adds 25th Anniversary aliases when upstream list misses them") {
        const auto out = YuGiOhSetSource::parseResponse(R"([
            {"set_name":"Legend of Blue Eyes White Dragon","set_code":"LOB","tcg_date":"2002-03-08"}
        ])");
        REQUIRE(out.isOk());

        bool foundLob25th = false;
        bool foundIoc25th = false;
        for (const auto& set : out.value()) {
            if (set.name == "Legend of Blue Eyes White Dragon (25th Anniversary Edition)"
                && set.id == "LOB-25TH") {
                foundLob25th = true;
            }
            if (set.name == "Invasion of Chaos (25th Anniversary Edition)" && set.id == "IOC-25TH") {
                foundIoc25th = true;
            }
        }
        CHECK(foundLob25th);
        CHECK(foundIoc25th);
    }

    TEST_CASE("does not duplicate aliases that already exist by name") {
        const auto out = YuGiOhSetSource::parseResponse(R"json([
            {"set_name":"Legend of Blue Eyes White Dragon (25th Anniversary Edition)","set_code":"LOB-25TH","tcg_date":"2023-04-20"}
        ])json");
        REQUIRE(out.isOk());

        int aliasCount = 0;
        for (const auto& set : out.value()) {
            if (set.name == "Legend of Blue Eyes White Dragon (25th Anniversary Edition)") {
                ++aliasCount;
            }
        }
        CHECK(aliasCount == 1);
    }

    TEST_CASE("malformed json returns parse error") {
        const auto out = YuGiOhSetSource::parseResponse("{bad json");
        REQUIRE(out.isErr());
        CHECK(out.error().find("YGOPRODeck set parse error:") != std::string::npos);
    }

    TEST_CASE("missing fields fall back to empty strings and keep parsing") {
        const std::string json = R"([
            {"set_name":"Set A"},
            {"set_code":"BBB","tcg_date":"2021-02-03"}
        ])";
        const auto out = YuGiOhSetSource::parseResponse(json);
        REQUIRE(out.isOk());
        bool foundMissingCode = false;
        bool foundMissingName = false;
        for (const auto& set : out.value()) {
            if (set.name == "Set A" && set.id.empty() && set.releaseDate.empty()) {
                foundMissingCode = true;
            }
            if (set.id == "BBB" && set.name.empty() && set.releaseDate == "2021/02/03") {
                foundMissingName = true;
            }
        }
        CHECK(foundMissingCode);
        CHECK(foundMissingName);
    }

    TEST_CASE("preserves slash-formatted dates and normalizes hyphen dates") {
        const std::string json = R"([
            {"set_name":"Slash Date","set_code":"S","tcg_date":"2024/01/01"},
            {"set_name":"Hyphen Date","set_code":"H","tcg_date":"2024-01-02"}
        ])";
        const auto out = YuGiOhSetSource::parseResponse(json);
        REQUIRE(out.isOk());
        bool sawSlash = false;
        bool sawHyphenNormalized = false;
        for (const auto& set : out.value()) {
            if (set.id == "S" && set.releaseDate == "2024/01/01") sawSlash = true;
            if (set.id == "H" && set.releaseDate == "2024/01/02") sawHyphenNormalized = true;
        }
        CHECK(sawSlash);
        CHECK(sawHyphenNormalized);
    }
}

TEST_SUITE("YuGiOhSetSource::fetchAll") {
    TEST_CASE("network success parses and hits endpoint") {
        FixedHttpClient http;
        http.body = R"([{"set_name":"Set X","set_code":"X","tcg_date":"2020-01-01"}])";
        YuGiOhSetSource src{http};
        const auto out = src.fetchAll();
        REQUIRE(out.isOk());
        CHECK(out.value().front().id == "X");
        CHECK(http.lastUrl == "https://db.ygoprodeck.com/api/v7/cardsets.php");
    }

    TEST_CASE("network error is propagated") {
        FixedHttpClient http;
        http.ok = false;
        YuGiOhSetSource src{http};
        const auto out = src.fetchAll();
        REQUIRE(out.isErr());
        CHECK(out.error() == "offline");
    }
}