#include <catch2/catch_test_macros.hpp>

import cargoxx.resolver;
import cargoxx.util;
import std;

using cargoxx::resolver::parse_devbox_resolve;
using cargoxx::util::ErrorCode;

TEST_CASE("parse_devbox_resolve extracts the canonical fields",
          "[resolver][devbox]") {
    // Trimmed shape of the real response for `fmt 10.2.1` from
    // https://search.devbox.sh/v1/resolve?name=fmt&version=10.2.1
    constexpr std::string_view input = R"({
        "commit_hash": "f4b140d5b253f5e2a1ff4e5506edbf8267724bde",
        "version": "10.2.1",
        "name": "fmt",
        "attr_paths": ["fmt"]
    })";

    auto r = parse_devbox_resolve(input);
    REQUIRE(r.has_value());
    REQUIRE(r->name == "fmt");
    REQUIRE(r->version == "10.2.1");
    REQUIRE(r->commit_hash == "f4b140d5b253f5e2a1ff4e5506edbf8267724bde");
    REQUIRE(r->attr_paths == std::vector<std::string>{"fmt"});
}

TEST_CASE("parse_devbox_resolve falls back to systems.<plat>.commit_hash",
          "[resolver][devbox]") {
    // Older / partial responses omit the top-level commit_hash but still
    // ship per-system entries.
    constexpr std::string_view input = R"({
        "name": "spdlog",
        "version": "1.13.0",
        "systems": {
            "x86_64-linux": {
                "commit_hash": "abc123def456",
                "attr_paths": ["spdlog"]
            }
        }
    })";

    auto r = parse_devbox_resolve(input);
    REQUIRE(r.has_value());
    REQUIRE(r->commit_hash == "abc123def456");
    REQUIRE(r->attr_paths == std::vector<std::string>{"spdlog"});
}

TEST_CASE("parse_devbox_resolve fails on missing commit_hash",
          "[resolver][devbox]") {
    constexpr std::string_view input = R"({
        "name": "fmt",
        "version": "10.2.1"
    })";
    auto r = parse_devbox_resolve(input);
    REQUIRE_FALSE(r.has_value());
    REQUIRE(r.error().code == ErrorCode::ResolutionVersionNotFound);
}

TEST_CASE("parse_devbox_resolve fails on garbage input", "[resolver][devbox]") {
    auto r = parse_devbox_resolve("not-json");
    REQUIRE_FALSE(r.has_value());
    REQUIRE(r.error().code == ErrorCode::ResolutionNetworkError);
}

TEST_CASE("parse_devbox_resolve fails on non-object root", "[resolver][devbox]") {
    auto r = parse_devbox_resolve("[]");
    REQUIRE_FALSE(r.has_value());
    REQUIRE(r.error().code == ErrorCode::ResolutionNetworkError);
}

TEST_CASE("parse_devbox_resolve tolerates an empty attr_paths array",
          "[resolver][devbox]") {
    constexpr std::string_view input = R"({
        "name": "fmt",
        "version": "10.2.1",
        "commit_hash": "abc",
        "attr_paths": []
    })";
    auto r = parse_devbox_resolve(input);
    REQUIRE(r.has_value());
    REQUIRE(r->attr_paths.empty());
    REQUIRE(r->commit_hash == "abc");
}