"""Tests for uasset parser."""

import pytest
from pathlib import Path

from unreal_mcp.core.uasset_parser import (
    UAssetParser,
    UAssetParseError,
    scan_content_folder,
)


def test_uasset_parser_get_asset_info() -> None:
    """Test getting asset info from path."""
    # Test Blueprint
    info = UAssetParser.get_asset_info_from_path(Path("Content/BP_Enemy.uasset"))
    assert info["name"] == "BP_Enemy"
    assert info["type"] == "Blueprint"

    # Test Material
    info = UAssetParser.get_asset_info_from_path(Path("Content/M_Wood.uasset"))
    assert info["name"] == "M_Wood"
    assert info["type"] == "Material"

    # Test StaticMesh
    info = UAssetParser.get_asset_info_from_path(Path("Content/SM_Chair.uasset"))
    assert info["name"] == "SM_Chair"
    assert info["type"] == "StaticMesh"

    # Test Unknown
    info = UAssetParser.get_asset_info_from_path(Path("Content/SomeAsset.uasset"))
    assert info["name"] == "SomeAsset"
    assert info["type"] == "Unknown"


def test_uasset_parser_file_not_found() -> None:
    """Test parser with non-existent file."""
    parser = UAssetParser(Path("nonexistent.uasset"))

    with pytest.raises(UAssetParseError, match="File not found"):
        parser.parse()


def test_uasset_parser_invalid_file(tmp_path: Path) -> None:
    """Test parser with invalid file."""
    invalid_file = tmp_path / "invalid.uasset"
    invalid_file.write_bytes(b"not a valid uasset")

    parser = UAssetParser(invalid_file)

    with pytest.raises(UAssetParseError, match="Invalid magic number"):
        parser.parse()


def test_uasset_parser_valid_header(tmp_path: Path) -> None:
    """Test parser with valid header."""
    # Create a minimal valid .uasset file
    valid_file = tmp_path / "BP_Test.uasset"
    # Magic number + minimal header
    valid_file.write_bytes(b"\xc1\x83\x2a\x9e" + b"\x00" * 100)

    parser = UAssetParser(valid_file)
    result = parser.parse()

    assert result["success"] is True
    assert "header" in result
    assert result["header"]["magic"] == "0x9e2a83c1"


def test_scan_content_folder(sample_project_path: Path) -> None:
    """Test scanning content folder."""
    content_path = sample_project_path / "Content"
    assets = scan_content_folder(content_path)

    assert len(assets) == 2
    names = [a["name"] for a in assets]
    assert "BP_Enemy" in names
    assert "BP_Player" in names


def test_scan_content_folder_nonexistent(tmp_path: Path) -> None:
    """Test scanning non-existent folder."""
    assets = scan_content_folder(tmp_path / "nonexistent")
    assert assets == []