"""
E2E coverage for miscellaneous server-scoped RPC methods.

Mirrors ``dotnet/test/E2E/RpcServerMiscE2ETests.cs`` (snapshot category
``rpc_server_misc``).
"""

from __future__ import annotations

import contextlib
import shutil
import uuid
from pathlib import Path

import pytest

from copilot import CopilotClient, RuntimeConnection
from copilot.rpc import (
    AgentRegistrySpawnRequest,
    SendAttachmentsToMessageParams,
    SessionsOpenResumeLast,
    SessionsOpenStatus,
)
from copilot.session import PermissionHandler

from .testharness import DEFAULT_GITHUB_TOKEN, E2ETestContext, wait_for_condition

pytestmark = pytest.mark.asyncio(loop_scope="module")


def _create_dedicated_client(ctx: E2ETestContext) -> CopilotClient:
    return CopilotClient(
        connection=RuntimeConnection.for_stdio(path=ctx.cli_path),
        working_directory=ctx.work_dir,
        env=ctx.get_env(),
        github_token=DEFAULT_GITHUB_TOKEN,
    )


async def _create_isolated_client(ctx: E2ETestContext) -> tuple[CopilotClient, Path]:
    home = Path(ctx.work_dir) / f"copilot-e2e-misc-home-{uuid.uuid4().hex}"
    home.mkdir(parents=True)
    env = ctx.get_env()
    for key in ("COPILOT_HOME", "GH_CONFIG_DIR", "XDG_CONFIG_HOME", "XDG_STATE_HOME"):
        env[key] = str(home)
    client = CopilotClient(
        connection=RuntimeConnection.for_stdio(path=ctx.cli_path),
        working_directory=ctx.work_dir,
        env=env,
        github_token=DEFAULT_GITHUB_TOKEN,
    )
    await client.start()
    return client, home


async def _stop_client(client: CopilotClient) -> None:
    with contextlib.suppress(ExceptionGroup, Exception):
        await client.stop()


async def _dispose_isolated(client: CopilotClient, home: Path) -> None:
    await _stop_client(client)
    with contextlib.suppress(OSError):
        shutil.rmtree(home, ignore_errors=True)


class TestRpcServerMisc:
    async def test_should_reload_user_settings(self, ctx: E2ETestContext):
        await ctx.client.start()

        await ctx.client.rpc.user.settings.reload()

    async def test_should_report_agent_registry_spawn_gate_closed(self, ctx: E2ETestContext):
        client, home = await _create_isolated_client(ctx)
        try:
            with pytest.raises(Exception) as excinfo:
                await client.rpc.agent_registry.spawn(AgentRegistrySpawnRequest(cwd=ctx.work_dir))

            message = str(excinfo.value)
            assert "Unhandled method".lower() not in message.lower()
            assert "agentRegistry.spawn".lower() in message.lower()
            assert "not enabled" in message.lower() or "no delegate" in message.lower(), message
        finally:
            await _dispose_isolated(client, home)

    async def test_should_shut_down_owned_runtime(self, ctx: E2ETestContext):
        client = _create_dedicated_client(ctx)
        try:
            await client.start()
            await client.rpc.user.settings.reload()

            await client.rpc.runtime.shutdown()

            async def stopped_serving() -> bool:
                try:
                    await client.rpc.user.settings.reload(timeout=1.0)
                    return False
                except Exception:
                    return True

            await wait_for_condition(
                stopped_serving,
                timeout=15.0,
                poll_interval=0.1,
                timeout_message="Runtime kept serving RPCs after a graceful shutdown.",
            )
        finally:
            await _stop_client(client)

    async def test_should_report_not_found_when_opening_session_without_context(
        self, ctx: E2ETestContext
    ):
        client, home = await _create_isolated_client(ctx)
        try:
            result = await client.rpc.sessions.open(SessionsOpenResumeLast())

            assert result.status == SessionsOpenStatus.NOT_FOUND
            assert result.session_id is None
        finally:
            await _dispose_isolated(client, home)

    async def test_should_reject_send_attachments_from_non_extension_connection(
        self, ctx: E2ETestContext
    ):
        async with await ctx.client.create_session(
            on_permission_request=PermissionHandler.approve_all,
        ) as session:
            with pytest.raises(Exception) as excinfo:
                await session.rpc.extensions.send_attachments_to_message(
                    SendAttachmentsToMessageParams(attachments=[])
                )

            message = str(excinfo.value)
            assert "Unhandled method".lower() not in message.lower()
            assert "extension" in message.lower()