#include <catch2/catch_test_macros.hpp>

import cargoxx.cli;
import cargoxx.linkdb;
import cargoxx.manifest;
import cargoxx.util;
import std;

using cargoxx::cli::cmd_add;
using cargoxx::cli::cmd_new;
using cargoxx::cli::cmd_remove;
using cargoxx::linkdb::Database;
using cargoxx::linkdb::Recipe;
using cargoxx::util::ErrorCode;
namespace manifest = cargoxx::manifest;

namespace {

// Disable the network resolver chains in cmd_add (which we use as a
// fixture-builder). Per-version-resolution tests live elsewhere.
struct DisableAutoResolveScope {
    DisableAutoResolveScope() { setenv("CARGOXX_NO_AUTORESOLVE", "1", 1); }
};
const DisableAutoResolveScope autoresolve_disabled_;

auto fresh_dir() -> std::filesystem::path {
    auto d = std::filesystem::temp_directory_path() /
             std::format("cargoxx-remove-test-{}", std::random_device{}());
    std::filesystem::create_directories(d);
    return d;
}

auto overlay_path(const std::filesystem::path& dir) -> std::filesystem::path {
    return dir / "overlay.sqlite";
}

auto scaffold(const std::filesystem::path& parent) -> std::filesystem::path {
    REQUIRE(cmd_new("app", false, parent).has_value());
    return parent / "app";
}

auto seed_recipe(const std::filesystem::path& overlay, const std::string& name,
                 const std::string& nixpkgs_attr) {
    auto db = Database::open(overlay);
    REQUIRE(db.has_value());
    REQUIRE(db->add_manual(name, "*",
                            Recipe{
                                .nixpkgs_attr = nixpkgs_attr,
                                .find_package = std::format("{} CONFIG REQUIRED", name),
                                .targets = {std::format("{}::{}", name, name)},
                                .source = "manual",
                            })
                .has_value());
}

} // namespace

TEST_CASE("cmd_remove drops the dependency", "[cli][remove]") {
    auto parent = fresh_dir();
    auto root = scaffold(parent);
    seed_recipe(overlay_path(parent), "fmt", "fmt_10");
    REQUIRE(cmd_add(root, "fmt", "10.2.0", {}, overlay_path(parent)).has_value());

    REQUIRE(cmd_remove(root, "fmt").has_value());

    auto m = manifest::parse(root / "Cargoxx.toml");
    REQUIRE(m.has_value());
    REQUIRE(m->dependencies.empty());
}

TEST_CASE("cmd_remove leaves other deps in place", "[cli][remove]") {
    auto parent = fresh_dir();
    auto root = scaffold(parent);
    seed_recipe(overlay_path(parent), "fmt", "fmt_10");
    seed_recipe(overlay_path(parent), "spdlog", "spdlog");
    REQUIRE(cmd_add(root, "fmt", "10.2.0", {}, overlay_path(parent)).has_value());
    REQUIRE(cmd_add(root, "spdlog", "1.13.0", {}, overlay_path(parent)).has_value());

    REQUIRE(cmd_remove(root, "fmt").has_value());

    auto m = manifest::parse(root / "Cargoxx.toml");
    REQUIRE(m.has_value());
    REQUIRE(m->dependencies.size() == 1);
    REQUIRE(m->dependencies[0].name == "spdlog");
}

TEST_CASE("cmd_remove errors on unknown dep", "[cli][remove]") {
    auto parent = fresh_dir();
    auto root = scaffold(parent);

    auto r = cmd_remove(root, "fmt");
    REQUIRE_FALSE(r.has_value());
    REQUIRE(r.error().code == ErrorCode::ManifestInvalidField);
}