from __future__ import annotations

from pathlib import Path
from types import SimpleNamespace

from adapter.matrix.files import (
    build_agent_incoming_path,
    build_workspace_attachment_path,
    download_matrix_attachment,
)
from core.protocol import Attachment


def test_build_workspace_attachment_path_scopes_by_surface_user_and_room(tmp_path: Path):
    rel_path, abs_path = build_workspace_attachment_path(
        workspace_root=tmp_path,
        matrix_user_id="@alice:example.org",
        room_id="!room:example.org",
        filename="report.pdf",
        timestamp="20260420-153000",
    )

    assert (
        rel_path
        == "surfaces/matrix/alice_example.org/room_example.org/inbox/20260420-153000-report.pdf"
    )
    assert abs_path == tmp_path / rel_path


async def test_download_matrix_attachment_persists_file_and_returns_workspace_path(tmp_path: Path):
    async def download(url: str):
        assert url == "mxc://server/id"
        return SimpleNamespace(body=b"%PDF-1.7")

    client = SimpleNamespace(download=download)
    attachment = Attachment(
        type="document",
        url="mxc://server/id",
        filename="report.pdf",
        mime_type="application/pdf",
    )

    saved = await download_matrix_attachment(
        client=client,
        workspace_root=tmp_path,
        matrix_user_id="@alice:example.org",
        room_id="!room:example.org",
        attachment=attachment,
        timestamp="20260420-153000",
    )

    assert saved.workspace_path is not None
    assert saved.workspace_path.endswith("20260420-153000-report.pdf")
    assert (tmp_path / saved.workspace_path).read_bytes() == b"%PDF-1.7"


def test_build_workspace_attachment_path_keeps_room_safe_agents_relative_contract(tmp_path: Path):
    rel_path, abs_path = build_workspace_attachment_path(
        workspace_root=tmp_path / "agents" / "7",
        matrix_user_id="@alice+bob:example.org",
        room_id="!room/ops:example.org",
        filename="quarterly status (final).pdf",
        timestamp="20260420-153000",
    )

    assert rel_path == (
        "surfaces/matrix/alice_bob_example.org/room_ops_example.org/inbox/"
        "20260420-153000-quarterly_status_final_.pdf"
    )
    assert not Path(rel_path).is_absolute()
    assert abs_path == tmp_path / "agents" / "7" / rel_path


def test_build_agent_incoming_path_uses_agent_workspace_volume(tmp_path: Path):
    rel_path, abs_path = build_agent_incoming_path(
        workspace_root=tmp_path / "agents" / "17",
        filename="quarterly status.pdf",
        timestamp="20260428-110000",
    )

    assert rel_path == "incoming/20260428-110000-quarterly_status.pdf"
    assert abs_path == tmp_path / "agents" / "17" / rel_path


async def test_download_matrix_attachment_uses_agent_workspace_incoming_dir(tmp_path: Path):
    async def download(url: str):
        assert url == "mxc://server/id"
        return SimpleNamespace(body=b"%PDF-1.7")

    saved = await download_matrix_attachment(
        client=SimpleNamespace(download=download),
        workspace_root=tmp_path / "agents" / "17",
        matrix_user_id="@alice:example.org",
        room_id="!room:example.org",
        attachment=Attachment(
            type="document",
            url="mxc://server/id",
            filename="report.pdf",
            mime_type="application/pdf",
        ),
        timestamp="20260428-110000",
    )

    assert saved.workspace_path == "incoming/20260428-110000-report.pdf"
    assert (tmp_path / "agents" / "17" / saved.workspace_path).read_bytes() == b"%PDF-1.7"