#include <catch2/catch_test_macros.hpp>

import cargoxx.util;
import std;

using cargoxx::util::Error;
using cargoxx::util::ErrorCode;
using cargoxx::util::format;

TEST_CASE("format renders code, message, and trailing newline", "[util][format]") {
    Error e{ErrorCode::ManifestNotFound, "manifest not found", "", std::nullopt, std::nullopt};
    REQUIRE(format(e) == "error[E0001]: manifest not found\n");
}

TEST_CASE("format pads error codes to four digits", "[util][format]") {
    Error e{ErrorCode::Internal, "boom", "", std::nullopt, std::nullopt};
    REQUIRE(format(e) == "error[E0100]: boom\n");
}

TEST_CASE("format includes location with line:col when present", "[util][format]") {
    Error e{
        ErrorCode::ManifestParseError,
        "syntax error",
        "",
        std::filesystem::path{"Cargoxx.toml"},
        std::pair{7, 1},
    };
    REQUIRE(format(e) == "error[E0002]: syntax error\n"
                         "  --> Cargoxx.toml:7:1\n");
}

TEST_CASE("format includes location without line:col when only path is set", "[util][format]") {
    Error e{
        ErrorCode::LayoutNoTarget,
        "no target found",
        "",
        std::filesystem::path{"./"},
        std::nullopt,
    };
    REQUIRE(format(e) == "error[E0020]: no target found\n"
                         "  --> ./\n");
}

TEST_CASE("format appends a hint line when hint is non-empty", "[util][format]") {
    Error e{
        ErrorCode::LayoutNoTarget,
        "no target found",
        "run `cargoxx new --lib <name>` to create a library project",
        std::nullopt,
        std::nullopt,
    };
    REQUIRE(format(e) ==
            "error[E0020]: no target found\n"
            "  hint: run `cargoxx new --lib <name>` to create a library project\n");
}

TEST_CASE("format combines location and hint", "[util][format]") {
    Error e{
        ErrorCode::LinkdbUnknownPackage,
        "package not in link database",
        "file an issue or supply a manual recipe",
        std::filesystem::path{"Cargoxx.toml"},
        std::pair{7, 1},
    };
    REQUIRE(format(e) ==
            "error[E0060]: package not in link database\n"
            "  --> Cargoxx.toml:7:1\n"
            "  hint: file an issue or supply a manual recipe\n");
}