// versions_for_hit — the per-hit enrichment behind `mcpp search` (#487).

// A hit's `ns:name` must route to its descriptor and yield the merged

// semver-descending version union; anything unreadable degrades to empty

// without failing the search.

#include <gtest/gtest.h>

import std;

import mcpp.config;

import mcpp.pm.package_fetcher;

namespace {

struct TempDir {

std::filesystem::path path = std::filesystem::temp_directory_path()

/ std::format("mcpp-search-versions-{}",

std::chrono::steady_clock::now()

.time_since_epoch().count());

TempDir() { std::filesystem::create_directories(path); }

~TempDir() {

std::error_code ec;

std::filesystem::remove_all(path, ec);

}

};

mcpp::pm::Fetcher::SearchHit hit(std::string name) {

return {"mcpplibs", std::move(name), "description"};

}

TEST(SearchVersions, MergesPerOsTablesOfTheHitsDescriptor) {

TempDir temp;

// Layout rule: the reader derives the letter dir from the candidate

// FILENAME's first char — "compat.gadget.lua" lives under pkgs/c/.

auto pkgs = temp.path / "data" / "mcpplibs" / "pkgs" / "c";

std::filesystem::create_directories(pkgs);

std::ofstream out(pkgs / "compat.gadget.lua");

out << R"(package = {

spec = "1", namespace = "compat", name = "gadget",

xpm = { linux = { ["1.0.0"] = { url = "u", sha256 = "h" },

["2.0.0"] = { url = "u", sha256 = "h" } },

windows = { ["2.0.0"] = { url = "u", sha256 = "h" } } },

}

)";

out.close(); // the reader runs while this test body is still alive

mcpp::config::GlobalConfig cfg{};

cfg.registryDir = temp.path;

mcpp::pm::Fetcher f(cfg);

auto versions = f.versions_for_hit(hit("compat:gadget"));

ASSERT_EQ(versions.size(), 2u);

EXPECT_EQ(versions[0], "2.0.0");

EXPECT_EQ(versions[1], "1.0.0");

}

TEST(SearchVersions, BareNameWithoutNamespaceCarriesNoVersions) {

mcpp::config::GlobalConfig cfg{};

cfg.registryDir = std::filesystem::temp_directory_path()

/ "mcpp-search-versions-no-registry";

mcpp::pm::Fetcher f(cfg);

EXPECT_TRUE(f.versions_for_hit(hit("gadget")).empty());

}

TEST(SearchVersions, UnreadableDescriptorDegradesToEmpty) {

TempDir temp;

mcpp::config::GlobalConfig cfg{};

cfg.registryDir = temp.path; // data/ exists nowhere: nothing readable

mcpp::pm::Fetcher f(cfg);

EXPECT_TRUE(f.versions_for_hit(hit("compat:ghost")).empty());

}

} // namespace