bambuddy/backend/tests/integration/test_library_api.py

"""Integration tests for Library API endpoints."""

import io
import tempfile
import zipfile
from pathlib import Path

import pytest
from httpx import AsyncClient


class TestLibraryFoldersAPI:
    """Integration tests for library folders endpoints."""

    @pytest.fixture
    async def folder_factory(self, db_session):
        """Factory to create test folders."""
        _counter = [0]

        async def _create_folder(**kwargs):
            from backend.app.models.library import LibraryFolder

            _counter[0] += 1
            counter = _counter[0]

            defaults = {
                "name": f"Test Folder {counter}",
            }
            defaults.update(kwargs)

            folder = LibraryFolder(**defaults)
            db_session.add(folder)
            await db_session.commit()
            await db_session.refresh(folder)
            return folder

        return _create_folder

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_folders_empty(self, async_client: AsyncClient, db_session):
        """Verify empty folder list returns empty array."""
        response = await async_client.get("/api/v1/library/folders")
        assert response.status_code == 200
        assert response.json() == []

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_folder(self, async_client: AsyncClient, db_session):
        """Verify folder can be created."""
        data = {"name": "New Folder"}
        response = await async_client.post("/api/v1/library/folders", json=data)
        assert response.status_code == 200
        result = response.json()
        assert result["name"] == "New Folder"
        assert result["id"] is not None

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_nested_folder(self, async_client: AsyncClient, folder_factory, db_session):
        """Verify nested folder can be created."""
        parent = await folder_factory(name="Parent")
        data = {"name": "Child", "parent_id": parent.id}
        response = await async_client.post("/api/v1/library/folders", json=data)
        assert response.status_code == 200
        result = response.json()
        assert result["name"] == "Child"
        assert result["parent_id"] == parent.id

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_get_folder(self, async_client: AsyncClient, folder_factory, db_session):
        """Verify single folder can be retrieved."""
        folder = await folder_factory(name="Test Folder")
        response = await async_client.get(f"/api/v1/library/folders/{folder.id}")
        assert response.status_code == 200
        result = response.json()
        assert result["id"] == folder.id
        assert result["name"] == "Test Folder"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_get_folder_not_found(self, async_client: AsyncClient, db_session):
        """Verify 404 for non-existent folder."""
        response = await async_client.get("/api/v1/library/folders/9999")
        assert response.status_code == 404

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_folder(self, async_client: AsyncClient, folder_factory, db_session):
        """Verify folder can be updated."""
        folder = await folder_factory(name="Old Name")
        data = {"name": "New Name"}
        response = await async_client.put(f"/api/v1/library/folders/{folder.id}", json=data)
        assert response.status_code == 200
        result = response.json()
        assert result["name"] == "New Name"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_delete_folder(self, async_client: AsyncClient, folder_factory, db_session):
        """Verify folder can be deleted."""
        folder = await folder_factory()
        response = await async_client.delete(f"/api/v1/library/folders/{folder.id}")
        assert response.status_code == 200
        result = response.json()
        assert result.get("message") or result.get("success", True)


class TestLibraryFilesAPI:
    """Integration tests for library files endpoints."""

    @pytest.fixture
    async def folder_factory(self, db_session):
        """Factory to create test folders."""
        _counter = [0]

        async def _create_folder(**kwargs):
            from backend.app.models.library import LibraryFolder

            _counter[0] += 1
            counter = _counter[0]

            defaults = {"name": f"Test Folder {counter}"}
            defaults.update(kwargs)

            folder = LibraryFolder(**defaults)
            db_session.add(folder)
            await db_session.commit()
            await db_session.refresh(folder)
            return folder

        return _create_folder

    @pytest.fixture
    async def file_factory(self, db_session):
        """Factory to create test files."""
        _counter = [0]

        async def _create_file(**kwargs):
            from backend.app.models.library import LibraryFile

            _counter[0] += 1
            counter = _counter[0]

            defaults = {
                "filename": f"test_file_{counter}.3mf",
                "file_path": f"/test/path/test_file_{counter}.3mf",
                "file_size": 1024,
                "file_type": "3mf",
            }
            defaults.update(kwargs)

            lib_file = LibraryFile(**defaults)
            db_session.add(lib_file)
            await db_session.commit()
            await db_session.refresh(lib_file)
            return lib_file

        return _create_file

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_files_empty(self, async_client: AsyncClient, db_session):
        """Verify empty file list returns empty array."""
        response = await async_client.get("/api/v1/library/files")
        assert response.status_code == 200
        assert response.json() == []

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_files_in_folder(self, async_client: AsyncClient, folder_factory, file_factory, db_session):
        """Verify files can be filtered by folder."""
        folder = await folder_factory()
        file1 = await file_factory(folder_id=folder.id)
        await file_factory()  # File in root (no folder)

        response = await async_client.get(f"/api/v1/library/files?folder_id={folder.id}")
        assert response.status_code == 200
        result = response.json()
        assert len(result) == 1
        assert result[0]["id"] == file1.id

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_get_file(self, async_client: AsyncClient, file_factory, db_session):
        """Verify single file can be retrieved."""
        lib_file = await file_factory(filename="test.3mf")
        response = await async_client.get(f"/api/v1/library/files/{lib_file.id}")
        assert response.status_code == 200
        result = response.json()
        assert result["id"] == lib_file.id
        assert result["filename"] == "test.3mf"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_get_file_not_found(self, async_client: AsyncClient, db_session):
        """Verify 404 for non-existent file."""
        response = await async_client.get("/api/v1/library/files/9999")
        assert response.status_code == 404

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_delete_file(self, async_client: AsyncClient, file_factory, db_session):
        """Verify file can be deleted."""
        lib_file = await file_factory()
        response = await async_client.delete(f"/api/v1/library/files/{lib_file.id}")
        assert response.status_code == 200
        result = response.json()
        assert result.get("message") or result.get("success", True)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_rename_file(self, async_client: AsyncClient, file_factory, db_session):
        """Verify file can be renamed."""
        lib_file = await file_factory(filename="old_name.3mf")
        data = {"filename": "new_name.3mf"}
        response = await async_client.put(f"/api/v1/library/files/{lib_file.id}", json=data)
        assert response.status_code == 200
        result = response.json()
        assert result["filename"] == "new_name.3mf"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_rename_file_invalid_path_separator(self, async_client: AsyncClient, file_factory, db_session):
        """Verify file rename fails with path separators."""
        lib_file = await file_factory(filename="test.3mf")
        data = {"filename": "path/to/file.3mf"}
        response = await async_client.put(f"/api/v1/library/files/{lib_file.id}", json=data)
        assert response.status_code == 400
        assert "path separator" in response.json()["detail"].lower()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_rename_file_invalid_backslash(self, async_client: AsyncClient, file_factory, db_session):
        """Verify file rename fails with backslash."""
        lib_file = await file_factory(filename="test.3mf")
        data = {"filename": "path\\to\\file.3mf"}
        response = await async_client.put(f"/api/v1/library/files/{lib_file.id}", json=data)
        assert response.status_code == 400
        assert "path separator" in response.json()["detail"].lower()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_library_stats(self, async_client: AsyncClient, folder_factory, file_factory, db_session):
        """Verify library stats endpoint returns counts."""
        await folder_factory()
        await folder_factory()
        await file_factory()

        response = await async_client.get("/api/v1/library/stats")
        assert response.status_code == 200
        result = response.json()
        assert result["total_folders"] == 2
        assert result["total_files"] == 1


class TestLibraryAddToQueueAPI:
    """Integration tests for /api/v1/library/files/add-to-queue endpoint."""

    @pytest.fixture
    async def printer_factory(self, db_session):
        """Factory to create test printers."""
        _counter = [0]

        async def _create_printer(**kwargs):
            from backend.app.models.printer import Printer

            _counter[0] += 1
            counter = _counter[0]

            defaults = {
                "name": f"Test Printer {counter}",
                "ip_address": f"192.168.1.{100 + counter}",
                "serial_number": f"TESTSERIAL{counter:04d}",
                "access_code": "12345678",
                "model": "X1C",
            }
            defaults.update(kwargs)

            printer = Printer(**defaults)
            db_session.add(printer)
            await db_session.commit()
            await db_session.refresh(printer)
            return printer

        return _create_printer

    @pytest.fixture
    async def library_file_factory(self, db_session):
        """Factory to create test library files."""
        _counter = [0]

        async def _create_library_file(**kwargs):
            from backend.app.models.library import LibraryFile

            _counter[0] += 1
            counter = _counter[0]

            defaults = {
                "filename": f"test_file_{counter}.gcode.3mf",
                "file_path": f"/test/path/test_file_{counter}.gcode.3mf",
                "file_size": 1024,
                "file_type": "3mf",
            }
            defaults.update(kwargs)

            lib_file = LibraryFile(**defaults)
            db_session.add(lib_file)
            await db_session.commit()
            await db_session.refresh(lib_file)
            return lib_file

        return _create_library_file

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_add_to_queue_file_not_found(self, async_client: AsyncClient, printer_factory, db_session):
        """Verify error for non-existent file."""
        await printer_factory()

        data = {"file_ids": [9999]}
        response = await async_client.post("/api/v1/library/files/add-to-queue", json=data)
        assert response.status_code == 200
        result = response.json()
        assert len(result["added"]) == 0
        assert len(result["errors"]) == 1
        assert result["errors"][0]["file_id"] == 9999

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_add_non_sliced_file_to_queue_fails(
        self, async_client: AsyncClient, printer_factory, library_file_factory, db_session
    ):
        """Verify non-sliced file cannot be added to queue."""
        await printer_factory()
        lib_file = await library_file_factory(
            filename="model.stl",
            file_path="/test/path/model.stl",
            file_type="stl",
        )

        data = {"file_ids": [lib_file.id]}
        response = await async_client.post("/api/v1/library/files/add-to-queue", json=data)
        assert response.status_code == 200
        result = response.json()
        assert len(result["added"]) == 0
        assert len(result["errors"]) == 1
        assert "sliced" in result["errors"][0]["error"].lower()


class TestLibraryZipExtractAPI:
    """Integration tests for ZIP extraction endpoint."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_extract_zip_invalid_file_type(self, async_client: AsyncClient, db_session):
        """Verify non-ZIP files are rejected."""
        # Create a fake file that's not a ZIP
        files = {"file": ("test.txt", b"This is not a zip file", "text/plain")}
        response = await async_client.post("/api/v1/library/files/extract-zip", files=files)
        assert response.status_code == 400
        assert "ZIP" in response.json()["detail"]

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_extract_zip_basic(self, async_client: AsyncClient, db_session):
        """Verify basic ZIP extraction works."""
        import io
        import zipfile

        # Create a simple ZIP file in memory
        zip_buffer = io.BytesIO()
        with zipfile.ZipFile(zip_buffer, "w", zipfile.ZIP_DEFLATED) as zf:
            zf.writestr("test1.txt", "Content of file 1")
            zf.writestr("test2.txt", "Content of file 2")
        zip_buffer.seek(0)

        files = {"file": ("test.zip", zip_buffer.read(), "application/zip")}
        response = await async_client.post("/api/v1/library/files/extract-zip", files=files)
        assert response.status_code == 200
        result = response.json()
        assert result["extracted"] == 2
        assert len(result["files"]) == 2
        assert len(result["errors"]) == 0

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_extract_zip_with_folders(self, async_client: AsyncClient, db_session):
        """Verify ZIP extraction preserves folder structure."""
        import io
        import zipfile

        # Create a ZIP file with folder structure
        zip_buffer = io.BytesIO()
        with zipfile.ZipFile(zip_buffer, "w", zipfile.ZIP_DEFLATED) as zf:
            zf.writestr("folder1/file1.txt", "Content 1")
            zf.writestr("folder1/subfolder/file2.txt", "Content 2")
            zf.writestr("folder2/file3.txt", "Content 3")
        zip_buffer.seek(0)

        files = {"file": ("test.zip", zip_buffer.read(), "application/zip")}
        params = {"preserve_structure": "true"}
        response = await async_client.post("/api/v1/library/files/extract-zip", files=files, params=params)
        assert response.status_code == 200
        result = response.json()
        assert result["extracted"] == 3
        assert result["folders_created"] >= 3  # folder1, folder1/subfolder, folder2

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_extract_zip_flat(self, async_client: AsyncClient, db_session):
        """Verify ZIP extraction can extract flat (no folders)."""
        import io
        import zipfile

        # Create a ZIP file with folder structure
        zip_buffer = io.BytesIO()
        with zipfile.ZipFile(zip_buffer, "w", zipfile.ZIP_DEFLATED) as zf:
            zf.writestr("folder/file1.txt", "Content 1")
            zf.writestr("folder/file2.txt", "Content 2")
        zip_buffer.seek(0)

        files = {"file": ("test.zip", zip_buffer.read(), "application/zip")}
        params = {"preserve_structure": "false"}
        response = await async_client.post("/api/v1/library/files/extract-zip", files=files, params=params)
        assert response.status_code == 200
        result = response.json()
        assert result["extracted"] == 2
        assert result["folders_created"] == 0  # No folders created when flat

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_extract_zip_skips_macos_files(self, async_client: AsyncClient, db_session):
        """Verify ZIP extraction skips __MACOSX and hidden files."""
        import io
        import zipfile

        # Create a ZIP file with macOS junk files
        zip_buffer = io.BytesIO()
        with zipfile.ZipFile(zip_buffer, "w", zipfile.ZIP_DEFLATED) as zf:
            zf.writestr("real_file.txt", "Real content")
            zf.writestr("__MACOSX/._real_file.txt", "macOS metadata")
            zf.writestr(".hidden_file", "Hidden content")
        zip_buffer.seek(0)

        files = {"file": ("test.zip", zip_buffer.read(), "application/zip")}
        response = await async_client.post("/api/v1/library/files/extract-zip", files=files)
        assert response.status_code == 200
        result = response.json()
        assert result["extracted"] == 1  # Only real_file.txt
        assert result["files"][0]["filename"] == "real_file.txt"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_extract_zip_create_folder_from_zip(self, async_client: AsyncClient, db_session):
        """Verify ZIP extraction creates a folder from the ZIP filename."""
        import io
        import zipfile

        # Create a ZIP file with some files
        zip_buffer = io.BytesIO()
        with zipfile.ZipFile(zip_buffer, "w", zipfile.ZIP_DEFLATED) as zf:
            zf.writestr("file1.txt", "Content 1")
            zf.writestr("file2.txt", "Content 2")
        zip_buffer.seek(0)

        files = {"file": ("MyProject.zip", zip_buffer.read(), "application/zip")}
        params = {"create_folder_from_zip": "true", "preserve_structure": "false"}
        response = await async_client.post("/api/v1/library/files/extract-zip", files=files, params=params)
        assert response.status_code == 200
        result = response.json()
        assert result["extracted"] == 2
        assert result["folders_created"] == 1  # MyProject folder created

        # Verify the files are in a folder
        assert result["files"][0]["folder_id"] is not None
        assert result["files"][1]["folder_id"] is not None
        # Both files should be in the same folder
        assert result["files"][0]["folder_id"] == result["files"][1]["folder_id"]

        # Verify the folder was created with the right name
        folder_response = await async_client.get(f"/api/v1/library/folders/{result['files'][0]['folder_id']}")
        assert folder_response.status_code == 200
        folder = folder_response.json()
        assert folder["name"] == "MyProject"


class TestLibraryStlThumbnailAPI:
    """Integration tests for STL thumbnail generation endpoints."""

    @pytest.fixture
    async def file_factory(self, db_session):
        """Factory to create test files."""
        _counter = [0]

        async def _create_file(**kwargs):
            from backend.app.models.library import LibraryFile

            _counter[0] += 1
            counter = _counter[0]

            defaults = {
                "filename": f"test_model_{counter}.stl",
                "file_path": f"/test/path/test_model_{counter}.stl",
                "file_size": 1024,
                "file_type": "stl",
            }
            defaults.update(kwargs)

            lib_file = LibraryFile(**defaults)
            db_session.add(lib_file)
            await db_session.commit()
            await db_session.refresh(lib_file)
            return lib_file

        return _create_file

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_batch_generate_thumbnails_empty(self, async_client: AsyncClient, db_session):
        """Verify batch thumbnail generation with no files."""
        data = {"all_missing": True}
        response = await async_client.post("/api/v1/library/generate-stl-thumbnails", json=data)
        assert response.status_code == 200
        result = response.json()
        assert result["processed"] == 0
        assert result["succeeded"] == 0
        assert result["failed"] == 0
        assert result["results"] == []

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_batch_generate_thumbnails_no_criteria(self, async_client: AsyncClient, db_session):
        """Verify batch thumbnail generation with no criteria returns empty."""
        data = {}
        response = await async_client.post("/api/v1/library/generate-stl-thumbnails", json=data)
        assert response.status_code == 200
        result = response.json()
        assert result["processed"] == 0

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_batch_generate_thumbnails_file_not_on_disk(
        self, async_client: AsyncClient, file_factory, db_session
    ):
        """Verify batch thumbnail generation handles missing files gracefully."""
        # Create a file in DB but not on disk
        stl_file = await file_factory(
            filename="missing.stl",
            file_path="/nonexistent/path/missing.stl",
            thumbnail_path=None,
        )

        data = {"file_ids": [stl_file.id]}
        response = await async_client.post("/api/v1/library/generate-stl-thumbnails", json=data)
        assert response.status_code == 200
        result = response.json()
        assert result["processed"] == 1
        assert result["succeeded"] == 0
        assert result["failed"] == 1
        assert result["results"][0]["success"] is False
        assert "not found" in result["results"][0]["error"].lower()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_batch_generate_thumbnails_with_real_stl(self, async_client: AsyncClient, db_session):
        """Verify batch thumbnail generation with a real STL file."""
        from backend.app.models.library import LibraryFile

        # Create a simple ASCII STL cube
        stl_content = """solid cube
facet normal 0 0 -1
  outer loop
    vertex 0 0 0
    vertex 1 0 0
    vertex 1 1 0
  endloop
endfacet
facet normal 0 0 1
  outer loop
    vertex 0 0 1
    vertex 1 1 1
    vertex 1 0 1
  endloop
endfacet
endsolid cube"""

        with tempfile.NamedTemporaryFile(suffix=".stl", delete=False, mode="w") as f:
            f.write(stl_content)
            stl_path = f.name

        try:
            # Create file in DB pointing to real STL
            lib_file = LibraryFile(
                filename="test_cube.stl",
                file_path=stl_path,
                file_size=len(stl_content),
                file_type="stl",
                thumbnail_path=None,
            )
            db_session.add(lib_file)
            await db_session.commit()
            await db_session.refresh(lib_file)

            data = {"file_ids": [lib_file.id]}
            response = await async_client.post("/api/v1/library/generate-stl-thumbnails", json=data)
            assert response.status_code == 200
            result = response.json()
            assert result["processed"] == 1
            # Result depends on whether trimesh/matplotlib are installed
            # Either succeeds or fails gracefully
            assert result["succeeded"] + result["failed"] == 1
        finally:
            import os

            if os.path.exists(stl_path):
                os.unlink(stl_path)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_upload_file_with_stl_thumbnail_param(self, async_client: AsyncClient, db_session):
        """Verify file upload accepts generate_stl_thumbnails parameter."""
        # Create a simple STL file
        stl_content = b"solid test\nendsolid test"

        files = {"file": ("test.stl", stl_content, "application/octet-stream")}
        params = {"generate_stl_thumbnails": "false"}
        response = await async_client.post("/api/v1/library/files", files=files, params=params)
        assert response.status_code == 200
        result = response.json()
        assert result["filename"] == "test.stl"
        assert result["file_type"] == "stl"
        # No thumbnail should be generated when disabled
        assert result["thumbnail_path"] is None

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_extract_zip_with_stl_thumbnail_param(self, async_client: AsyncClient, db_session):
        """Verify ZIP extraction accepts generate_stl_thumbnails parameter."""
        # Create a ZIP file containing an STL
        stl_content = b"solid test\nendsolid test"
        zip_buffer = io.BytesIO()
        with zipfile.ZipFile(zip_buffer, "w", zipfile.ZIP_DEFLATED) as zf:
            zf.writestr("model.stl", stl_content)
        zip_buffer.seek(0)

        files = {"file": ("test.zip", zip_buffer.read(), "application/zip")}
        params = {"generate_stl_thumbnails": "false"}
        response = await async_client.post("/api/v1/library/files/extract-zip", files=files, params=params)
        assert response.status_code == 200
        result = response.json()
        assert result["extracted"] == 1
        assert result["files"][0]["filename"] == "model.stl"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_batch_generate_thumbnails_by_folder(self, async_client: AsyncClient, file_factory, db_session):
        """Verify batch thumbnail generation can filter by folder."""
        from backend.app.models.library import LibraryFolder

        # Create a folder
        folder = LibraryFolder(name="STL Folder")
        db_session.add(folder)
        await db_session.commit()
        await db_session.refresh(folder)

        # Create STL file in folder (no thumbnail)
        stl_in_folder = await file_factory(
            filename="in_folder.stl",
            folder_id=folder.id,
            thumbnail_path=None,
        )

        # Create STL file at root (no thumbnail)
        _stl_at_root = await file_factory(
            filename="at_root.stl",
            folder_id=None,
            thumbnail_path=None,
        )

        # Request thumbnails only for files in folder
        data = {"folder_id": folder.id, "all_missing": True}
        response = await async_client.post("/api/v1/library/generate-stl-thumbnails", json=data)
        assert response.status_code == 200
        result = response.json()
        # Should only process the file in the folder
        assert result["processed"] == 1
        assert result["results"][0]["file_id"] == stl_in_folder.id

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_batch_generate_thumbnails_all_missing(self, async_client: AsyncClient, file_factory, db_session):
        """Verify batch thumbnail generation finds all STL files missing thumbnails."""
        # Create files with and without thumbnails
        _stl_with_thumb = await file_factory(
            filename="with_thumb.stl",
            thumbnail_path="/some/path/thumb.png",
        )
        stl_without_thumb1 = await file_factory(
            filename="without_thumb1.stl",
            thumbnail_path=None,
        )
        stl_without_thumb2 = await file_factory(
            filename="without_thumb2.stl",
            thumbnail_path=None,
        )

        data = {"all_missing": True}
        response = await async_client.post("/api/v1/library/generate-stl-thumbnails", json=data)
        assert response.status_code == 200
        result = response.json()
        # Should only process files without thumbnails
        assert result["processed"] == 2
        file_ids = {r["file_id"] for r in result["results"]}
        assert stl_without_thumb1.id in file_ids
        assert stl_without_thumb2.id in file_ids


class TestLibraryPathHelpers:
    """Tests for path handling utilities used for backup portability."""

    def test_to_relative_path_converts_absolute(self):
        """Verify absolute paths are converted to relative paths."""
        from backend.app.api.routes.library import to_relative_path
        from backend.app.core.config import settings

        base_dir = str(settings.base_dir)
        abs_path = f"{base_dir}/archive/library/files/test.3mf"
        rel_path = to_relative_path(abs_path)

        assert not rel_path.startswith("/")
        assert rel_path == "archive/library/files/test.3mf"

    def test_to_relative_path_handles_path_object(self):
        """Verify Path objects are handled correctly."""
        from pathlib import Path

        from backend.app.api.routes.library import to_relative_path
        from backend.app.core.config import settings

        abs_path = Path(settings.base_dir) / "archive" / "test.3mf"
        rel_path = to_relative_path(abs_path)

        assert not rel_path.startswith("/")
        assert rel_path == "archive/test.3mf"

    def test_to_relative_path_returns_empty_for_empty_input(self):
        """Verify empty input returns empty string."""
        from backend.app.api.routes.library import to_relative_path

        assert to_relative_path("") == ""
        assert to_relative_path(None) == ""

    def test_to_absolute_path_converts_relative(self):
        """Verify relative paths are converted to absolute paths."""
        from backend.app.api.routes.library import to_absolute_path
        from backend.app.core.config import settings

        rel_path = "archive/library/files/test.3mf"
        abs_path = to_absolute_path(rel_path)

        assert abs_path is not None
        assert abs_path.is_absolute()
        assert str(abs_path) == f"{settings.base_dir}/archive/library/files/test.3mf"

    def test_to_absolute_path_handles_already_absolute(self):
        """Verify already absolute paths are returned as-is (for backwards compatibility)."""
        from backend.app.api.routes.library import to_absolute_path

        abs_path_str = "/data/archive/test.3mf"
        result = to_absolute_path(abs_path_str)

        assert result is not None
        assert str(result) == abs_path_str

    def test_to_absolute_path_returns_none_for_empty(self):
        """Verify None/empty input returns None."""
        from backend.app.api.routes.library import to_absolute_path

        assert to_absolute_path(None) is None
        assert to_absolute_path("") is None