"""Tests for modules/projects.py."""

from unittest.mock import AsyncMock, patch

import pytest

from mcp_synology_container.modules.projects import _find_project, _format_project_detail

SAMPLE_PROJECTS = {
    "uuid-1": {
        "id": "uuid-1",
        "name": "myapp",
        "status": "RUNNING",
        "path": "/volume1/docker/myapp",
        "share_path": "/docker/myapp",
        "created_at": "2025-01-01T00:00:00Z",
        "updated_at": "2025-01-02T00:00:00Z",
        "containerIds": ["abc123def456"],
        "services": [{"display_name": "myapp (project)"}],
    },
    "uuid-2": {
        "id": "uuid-2",
        "name": "database",
        "status": "STOPPED",
        "path": "/volume1/docker/database",
        "share_path": "/docker/database",
        "created_at": "2025-01-01T00:00:00Z",
        "updated_at": "2025-01-01T00:00:00Z",
        "containerIds": [],
        "services": [],
    },
}


@pytest.mark.asyncio
async def test_find_project_found():
    client = AsyncMock()
    client.request.return_value = SAMPLE_PROJECTS

    result = await _find_project(client, "myapp")
    assert result is not None
    assert result["name"] == "myapp"
    assert result["status"] == "RUNNING"


@pytest.mark.asyncio
async def test_find_project_not_found():
    client = AsyncMock()
    client.request.return_value = SAMPLE_PROJECTS

    result = await _find_project(client, "nonexistent")
    assert result is None


@pytest.mark.asyncio
async def test_find_project_api_error():
    client = AsyncMock()
    client.request.side_effect = Exception("API error")

    result = await _find_project(client, "myapp")
    assert result is None


def test_format_project_detail():
    project = SAMPLE_PROJECTS["uuid-1"]
    output = _format_project_detail(project)

    assert "myapp" in output
    assert "RUNNING" in output
    assert "/volume1/docker/myapp" in output
    assert "uuid-1" in output


def test_format_project_detail_no_containers():
    project = SAMPLE_PROJECTS["uuid-2"]
    output = _format_project_detail(project)

    assert "database" in output
    assert "STOPPED" in output
    assert "Containers: 0" in output


@pytest.mark.asyncio
async def test_list_projects_tool():
    """Test list_projects tool via function registration."""
    from mcp_synology_container.config import AppConfig, ConnectionConfig
    from mcp_synology_container.modules.projects import register_projects

    config = AppConfig(
        schema_version=1,
        connection=ConnectionConfig(host="nas.local", port=443, https=True, verify_ssl=True),
    )
    client = AsyncMock()
    client.request.return_value = SAMPLE_PROJECTS

    tools: dict = {}

    class MockMCP:
        def tool(self):
            def decorator(fn):
                tools[fn.__name__] = fn
                return fn

            return decorator

    register_projects(MockMCP(), config, client)
    assert "list_projects" in tools

    result = await tools["list_projects"]()
    assert "myapp" in result
    assert "database" in result
    assert "RUNNING" in result


@pytest.mark.asyncio
async def test_stop_project_requires_confirmation():
    from mcp_synology_container.config import AppConfig, ConnectionConfig
    from mcp_synology_container.modules.projects import register_projects

    config = AppConfig(
        schema_version=1,
        connection=ConnectionConfig(host="nas.local", port=443, https=True, verify_ssl=True),
    )
    client = AsyncMock()
    tools: dict = {}

    class MockMCP:
        def tool(self):
            def decorator(fn):
                tools[fn.__name__] = fn
                return fn

            return decorator

    register_projects(MockMCP(), config, client)

    result = await tools["stop_project"]("myapp", confirmed=False)
    assert "confirmed=True" in result
    client.request.assert_not_called()


@pytest.mark.asyncio
async def test_redeploy_project_requires_confirmation():
    from mcp_synology_container.config import AppConfig, ConnectionConfig
    from mcp_synology_container.modules.projects import register_projects

    config = AppConfig(
        schema_version=1,
        connection=ConnectionConfig(host="nas.local", port=443, https=True, verify_ssl=True),
    )
    client = AsyncMock()
    tools: dict = {}

    class MockMCP:
        def tool(self):
            def decorator(fn):
                tools[fn.__name__] = fn
                return fn

            return decorator

    register_projects(MockMCP(), config, client)

    result = await tools["redeploy_project"]("myapp", confirmed=False)
    assert "confirmed=True" in result
    client.request.assert_not_called()


# ──────────────────────────────────────────────────────────────────────────────
#  Bug 2: status-aware redeploy
# ──────────────────────────────────────────────────────────────────────────────


def make_projects_tools(client):
    from mcp_synology_container.config import AppConfig, ConnectionConfig
    from mcp_synology_container.modules.projects import register_projects

    config = AppConfig(
        schema_version=1,
        connection=ConnectionConfig(host="nas.local", port=443, https=True, verify_ssl=True),
    )
    tools: dict = {}

    class MockMCP:
        def tool(self):
            def decorator(fn):
                tools[fn.__name__] = fn
                return fn

            return decorator

    register_projects(MockMCP(), config, client)
    return tools


def project_list(status: str) -> dict:
    return {
        "uuid-1": {
            "id": "uuid-1",
            "name": "myapp",
            "status": status,
            "path": "/volume1/docker/myapp",
            "containerIds": ["abc123"],
            "services": [],
        }
    }


def make_stateful_redeploy_mock(
    initial_status: str,
    stop_raises=None,
    build_stream_raises=None,
):
    """Create a stateful client mock for redeploy tests.

    Returns (client, calls_list).  After ``trigger_build_stream`` is called,
    subsequent ``list`` calls return RUNNING so the polling loop terminates
    immediately.  asyncio.sleep is NOT patched here — patch it at call-site.
    """
    client = AsyncMock()
    calls = []
    build_done = False

    async def mock_request(api, method, **kwargs):
        calls.append((api, method))
        if method == "stop" and stop_raises:
            raise stop_raises
        if method == "list":
            return project_list("RUNNING") if build_done else project_list(initial_status)
        return {}

    async def mock_trigger_build_stream(project_id):
        nonlocal build_done
        calls.append(("SYNO.Docker.Project", "build_stream"))
        if build_stream_raises:
            raise build_stream_raises
        build_done = True  # After build_stream, polling returns RUNNING

    client.request.side_effect = mock_request
    client.trigger_build_stream = AsyncMock(side_effect=mock_trigger_build_stream)
    return client, calls


@pytest.mark.asyncio
async def test_redeploy_running_project():
    """RUNNING project: stop → build_stream → poll until RUNNING."""
    client, calls = make_stateful_redeploy_mock("RUNNING")
    tools = make_projects_tools(client)

    with patch("mcp_synology_container.modules.projects.asyncio.sleep"):
        result = await tools["redeploy_project"]("myapp", confirmed=True)

    assert "redeployed successfully" in result
    methods = [m for _, m in calls]
    assert "stop" in methods
    assert "build_stream" in methods
    assert methods.index("stop") < methods.index("build_stream")


@pytest.mark.asyncio
async def test_redeploy_stopped_project_skips_stop():
    """STOPPED project: skip stop, call build_stream directly; polls until RUNNING."""
    client, calls = make_stateful_redeploy_mock("STOPPED")
    tools = make_projects_tools(client)

    with patch("mcp_synology_container.modules.projects.asyncio.sleep"):
        result = await tools["redeploy_project"]("myapp", confirmed=True)

    assert "redeployed successfully" in result
    methods = [m for _, m in calls]
    assert "stop" not in methods
    assert "build_stream" in methods
    assert "STOPPED" in result


@pytest.mark.asyncio
async def test_redeploy_build_failed_project():
    """BUILD_FAILED project: stop (suppressed) → build_stream → poll until RUNNING."""
    client, calls = make_stateful_redeploy_mock("BUILD_FAILED")
    tools = make_projects_tools(client)

    with patch("mcp_synology_container.modules.projects.asyncio.sleep"):
        result = await tools["redeploy_project"]("myapp", confirmed=True)

    assert "redeployed successfully" in result
    methods = [m for _, m in calls]
    assert "stop" in methods
    assert "build_stream" in methods
    assert methods.index("stop") < methods.index("build_stream")


@pytest.mark.asyncio
async def test_redeploy_build_failed_stop_error_nonfatal():
    """BUILD_FAILED: stop failure is non-fatal — build_stream must still be called."""
    from mcp_synology_container.dsm_client import SynologyError

    client, calls = make_stateful_redeploy_mock(
        "BUILD_FAILED",
        stop_raises=SynologyError("already stopped", code=2101),
    )
    tools = make_projects_tools(client)

    with patch("mcp_synology_container.modules.projects.asyncio.sleep"):
        result = await tools["redeploy_project"]("myapp", confirmed=True)

    assert "redeployed successfully" in result
    methods = [m for _, m in calls]
    assert "build_stream" in methods


@pytest.mark.asyncio
async def test_redeploy_build_stream_error_aborts():
    """If build_stream raises, redeploy must abort with a clear error message."""
    from mcp_synology_container.dsm_client import SynologyError

    client, calls = make_stateful_redeploy_mock(
        "RUNNING",
        build_stream_raises=SynologyError("build failed", code=114),
    )
    tools = make_projects_tools(client)

    with patch("mcp_synology_container.modules.projects.asyncio.sleep"):
        result = await tools["redeploy_project"]("myapp", confirmed=True)

    assert "redeployed successfully" not in result
    assert "build failed" in result or "Error during redeploy" in result
    # Polling must not have been called after build_stream failure
    methods = [m for _, m in calls]
    list_calls = [m for m in methods if m == "list"]
    assert len(list_calls) <= 1  # at most the initial find_project call


@pytest.mark.asyncio
async def test_redeploy_poll_timeout():
    """If project never reaches RUNNING after build_stream, a warning is emitted."""
    client = AsyncMock()
    build_done = False

    async def mock_request(api, method, **kwargs):
        if method == "list":
            # Before build: RUNNING (so initial status check is valid)
            # After build: STARTING (simulate stuck containers)
            return project_list("STARTING") if build_done else project_list("RUNNING")
        return {}

    async def mock_build_stream(project_id):
        nonlocal build_done
        build_done = True

    client.request.side_effect = mock_request
    client.trigger_build_stream = AsyncMock(side_effect=mock_build_stream)
    tools = make_projects_tools(client)

    # Use tiny timeout so the test is instant (interval=1, timeout=1 → 1 poll)
    with (
        patch("mcp_synology_container.modules.projects.asyncio.sleep"),
        patch("mcp_synology_container.modules.projects._BUILD_POLL_TIMEOUT", 1),
        patch("mcp_synology_container.modules.projects._POLL_INTERVAL", 1),
    ):
        result = await tools["redeploy_project"]("myapp", confirmed=True)

    assert "Warning" in result
    assert "redeployed successfully" not in result


@pytest.mark.asyncio
async def test_redeploy_unknown_status_returns_error():
    """Unknown status must return a clear error with a workaround hint."""
    client = AsyncMock()

    async def mock_request(api, method, **kwargs):
        if method == "list":
            return project_list("UPDATING")
        return {}

    client.request.side_effect = mock_request
    client.trigger_build_stream = AsyncMock()
    tools = make_projects_tools(client)

    result = await tools["redeploy_project"]("myapp", confirmed=True)

    assert "UPDATING" in result
    assert "Workaround" in result or "stop_project" in result


# ──────────────────────────────────────────────────────────────────────
#  M-4: clear recovery hint when build_stream fails after stop succeeded
# ──────────────────────────────────────────────────────────────────────


@pytest.mark.asyncio
async def test_redeploy_build_stream_transport_error_shows_stopped_recovery_hint():
    """M-4: build_stream transport error after RUNNING-stop must tell the user the
    project is now STOPPED and recommend start_project / retry."""
    from mcp_synology_container.dsm_client import SynologyError

    client, calls = make_stateful_redeploy_mock(
        "RUNNING",
        build_stream_raises=SynologyError(
            "build_stream transport error: ConnectError: nas offline", code=0
        ),
    )
    tools = make_projects_tools(client)

    with patch("mcp_synology_container.modules.projects.asyncio.sleep"):
        result = await tools["redeploy_project"]("myapp", confirmed=True)

    # No raw stack trace — clean message
    assert "transport error" in result
    assert "ConnectError" in result
    # The recovery hint must point at the actual situation
    assert "STOPPED" in result
    assert "start_project" in result
    # Old misleading workaround text must NOT appear
    assert "stop_project + start_project separately" not in result


@pytest.mark.asyncio
async def test_redeploy_build_stream_error_on_stopped_project_keeps_old_workaround():
    """If the project was STOPPED to begin with, no stop was issued, so the
    'STOPPED recovery' hint is NOT appropriate — keep the original workaround."""
    from mcp_synology_container.dsm_client import SynologyError

    client, calls = make_stateful_redeploy_mock(
        "STOPPED",
        build_stream_raises=SynologyError("build failed", code=114),
    )
    tools = make_projects_tools(client)

    with patch("mcp_synology_container.modules.projects.asyncio.sleep"):
        result = await tools["redeploy_project"]("myapp", confirmed=True)

    assert "build failed" in result or "Error during redeploy" in result
    # Stop was never issued; new recovery hint should not appear
    assert "was stopped before this error" not in result


# ──────────────────────────────────────────────────────────────────────
#  M-5: polling exits early on BUILD_FAILED / ERROR
# ──────────────────────────────────────────────────────────────────────


@pytest.mark.asyncio
async def test_wait_for_project_running_returns_early_on_build_failed():
    """_wait_for_project_running must exit as soon as DSM reports BUILD_FAILED,
    not wait the full timeout."""
    from mcp_synology_container.modules.projects import _wait_for_project_running

    client = AsyncMock()

    async def mock_request(api, method, **kwargs):
        if method == "list":
            return project_list("BUILD_FAILED")
        return {}

    client.request.side_effect = mock_request

    with patch("mcp_synology_container.modules.projects.asyncio.sleep"):
        # 100s timeout, 2s interval — if the early-exit isn't there the test
        # would still terminate quickly because sleep is mocked, but the call
        # count assertion below catches a non-exiting loop.
        result = await _wait_for_project_running(client, "myapp", timeout=100, interval=2)

    assert result == "BUILD_FAILED"
    # Only a few list() calls — exit was on the first poll iteration.
    list_calls = [c for c in client.request.call_args_list if c.args[1] == "list"]
    assert len(list_calls) <= 2


@pytest.mark.asyncio
async def test_wait_for_project_running_returns_early_on_error():
    from mcp_synology_container.modules.projects import _wait_for_project_running

    client = AsyncMock()

    async def mock_request(api, method, **kwargs):
        if method == "list":
            return project_list("ERROR")
        return {}

    client.request.side_effect = mock_request

    with patch("mcp_synology_container.modules.projects.asyncio.sleep"):
        result = await _wait_for_project_running(client, "myapp", timeout=100, interval=2)

    assert result == "ERROR"


@pytest.mark.asyncio
async def test_redeploy_surfaces_build_failed_with_hint():
    """When polling reports BUILD_FAILED, redeploy_project must include a clear
    hint to inspect the image tag and retry."""
    client = AsyncMock()
    build_done = False

    async def mock_request(api, method, **kwargs):
        if method == "list":
            return project_list("BUILD_FAILED") if build_done else project_list("RUNNING")
        return {}

    async def mock_build_stream(project_id):
        nonlocal build_done
        build_done = True

    client.request.side_effect = mock_request
    client.trigger_build_stream = AsyncMock(side_effect=mock_build_stream)
    tools = make_projects_tools(client)

    with patch("mcp_synology_container.modules.projects.asyncio.sleep"):
        result = await tools["redeploy_project"]("myapp", confirmed=True)

    assert "Redeploy failed" in result
    assert "BUILD_FAILED" in result
    assert "update_image_tag" in result
    assert "redeployed successfully" not in result
    # Polling must have exited early, not run to the full timeout.
    list_calls = [c for c in client.request.call_args_list if c.args[1] == "list"]
    # Generous upper bound — early exit means handful of polls, not hundreds.
    assert len(list_calls) <= 5