"""Tests for `headroom wrap kimi` command."""

from __future__ import annotations

import os
import sys
from pathlib import Path
from typing import Any
from unittest.mock import patch

import pytest
from click.testing import CliRunner

from headroom.cli import wrap as wrap_mod
from headroom.cli.main import main


@pytest.fixture
def runner() -> CliRunner:
    return CliRunner()


def test_managed_route_reproduction(
    runner: CliRunner,
    capfd: pytest.CaptureFixture[str],
    monkeypatch: pytest.MonkeyPatch,
    tmp_path: Path,
) -> None:
    """The production launcher passes the managed endpoint to an exact-contract child."""
    direct = "https://api.kimi.com/coding/v1"
    monkeypatch.setenv("KIMI_BASE_URL", direct)
    monkeypatch.setenv("KIMI_TEST_UNRELATED", "preserved")
    monkeypatch.setattr(wrap_mod, "_project_name_from_cwd", lambda: "repo")
    captured: dict[str, Any] = {}

    def fake_launch_tool(**kwargs: Any) -> None:  # noqa: ANN003
        captured.update(kwargs)

    with patch.object(wrap_mod.shutil, "which", return_value=sys.executable):
        with patch.object(wrap_mod, "_launch_tool", side_effect=fake_launch_tool):
            result = runner.invoke(main, ["wrap", "kimi", "--port", "8787"])

    assert result.exit_code == 0, result.output
    env = captured["env"]
    display = captured["env_vars_display"]
    configure_launch = captured["configure_launch"]
    child_result = tmp_path / "kimi-child.txt"
    child = (
        "import os, sys; from pathlib import Path; Path(r'"
        f"{child_result}"
        "').write_text('CHILD|' + os.environ['KIMI_CODE_BASE_URL'] + '|' + "
        "os.environ['KIMI_BASE_URL'] + '|' + os.environ['KIMI_TEST_UNRELATED'] + '|' + sys.argv[1])"
    )

    with (
        patch.object(wrap_mod, "_make_cleanup", return_value=lambda: None),
        patch.object(wrap_mod.signal, "signal"),
        patch.object(wrap_mod, "_register_proxy_client"),
        patch.object(wrap_mod, "_ensure_proxy", return_value=(None, 9001)),
        patch.object(wrap_mod, "_unregister_proxy_client"),
        patch.object(wrap_mod, "_push_runtime_env"),
        patch.object(wrap_mod, "_configure_quiet_cli_env", return_value=[]),
    ):
        with pytest.raises(SystemExit) as raised:
            wrap_mod._launch_tool(
                binary=os.fspath(Path(sys.executable)),
                args=("-c", child, "child-arg"),
                env=env,
                port=8787,
                no_proxy=False,
                tool_label="KIMI",
                env_vars_display=display,
                configure_launch=configure_launch,
            )

    assert raised.value.code == 0
    output = result.output + capfd.readouterr().out
    expected = "http://127.0.0.1:9001/p/repo/v1"
    assert f"KIMI_CODE_BASE_URL={expected}" in output
    assert f"KIMI_BASE_URL={expected}" in output
    assert child_result.read_text() == f"CHILD|{expected}|{expected}|preserved|child-arg"
    assert direct not in output


def test_wrap_kimi_launch(
    runner: CliRunner,
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    """Kimi launches with correct configuration."""
    monkeypatch.chdir(tmp_path)
    monkeypatch.delenv("HEADROOM_CONTEXT_TOOL", raising=False)

    captured: dict[str, Any] = {}

    def fake_launch_tool(**kwargs: Any) -> None:  # noqa: ANN003
        captured.update(kwargs)

    with patch.object(wrap_mod.shutil, "which", return_value="kimi"):
        with patch.object(wrap_mod, "_launch_tool", side_effect=fake_launch_tool):
            with patch.object(wrap_mod, "_project_name_from_cwd", return_value=None):
                result = runner.invoke(
                    main, ["wrap", "kimi", "--port", "9000", "--", "-m", "kimi-for-coding"]
                )

    assert result.exit_code == 0, result.output
    env = captured["env"]
    assert isinstance(env, dict)
    assert captured["tool_label"] == "KIMI"
    assert captured["agent_type"] == "kimi"
    assert captured["args"] == ("-m", "kimi-for-coding")
    assert captured["openai_api_url"] == "https://api.kimi.com/coding/v1"
    assert callable(captured["configure_launch"])
    assert env["KIMI_CODE_BASE_URL"] == "http://127.0.0.1:9000/v1"
    assert env["KIMI_BASE_URL"] == "http://127.0.0.1:9000/v1"


def test_project_name(
    runner: CliRunner,
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    """Project name is encoded in both Kimi endpoint variables."""
    project_dir = tmp_path / "my-project"
    project_dir.mkdir()
    monkeypatch.chdir(project_dir)
    monkeypatch.delenv("HEADROOM_CONTEXT_TOOL", raising=False)

    captured: dict[str, Any] = {}

    def fake_launch_tool(**kwargs: Any) -> None:  # noqa: ANN003
        captured.update(kwargs)

    with patch.object(wrap_mod.shutil, "which", return_value="kimi"):
        with patch.object(wrap_mod, "_launch_tool", side_effect=fake_launch_tool):
            result = runner.invoke(main, ["wrap", "kimi", "--port", "7000"])

    assert result.exit_code == 0, result.output
    env = captured["env"]
    assert env["KIMI_CODE_BASE_URL"] == "http://127.0.0.1:7000/p/my-project/v1"
    assert env["KIMI_BASE_URL"] == "http://127.0.0.1:7000/p/my-project/v1"


def test_wrap_kimi_cli_fallback(
    runner: CliRunner,
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    """Falls back to the `kimi-cli` binary when `kimi` is not on PATH."""
    monkeypatch.chdir(tmp_path)
    monkeypatch.delenv("HEADROOM_CONTEXT_TOOL", raising=False)

    captured: dict[str, Any] = {}

    def fake_launch_tool(**kwargs: Any) -> None:  # noqa: ANN003
        captured.update(kwargs)

    def fake_which(name: str) -> str | None:
        return "/usr/local/bin/kimi-cli" if name == "kimi-cli" else None

    with patch.object(wrap_mod.shutil, "which", side_effect=fake_which):
        with patch.object(wrap_mod, "_launch_tool", side_effect=fake_launch_tool):
            with patch.object(wrap_mod, "_project_name_from_cwd", return_value=None):
                result = runner.invoke(main, ["wrap", "kimi"])

    assert result.exit_code == 0, result.output
    assert captured["binary"] == "/usr/local/bin/kimi-cli"


def test_wrap_kimi_not_found(
    runner: CliRunner,
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    """Error message when neither kimi nor kimi-cli is found."""
    monkeypatch.chdir(tmp_path)
    monkeypatch.delenv("HEADROOM_CONTEXT_TOOL", raising=False)

    with patch.object(wrap_mod.shutil, "which", return_value=None):
        result = runner.invoke(main, ["wrap", "kimi"])

    assert result.exit_code == 1
    assert "Error: 'kimi' (or 'kimi-cli') not found in PATH" in result.output
    assert "https://github.com/MoonshotAI/kimi-cli" in result.output


def test_port_fallback(
    runner: CliRunner,
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    """Custom --port is passed to _launch_tool and appears in both URLs."""
    monkeypatch.chdir(tmp_path)
    monkeypatch.delenv("HEADROOM_CONTEXT_TOOL", raising=False)

    captured: dict[str, Any] = {}

    def fake_launch_tool(**kwargs: Any) -> None:  # noqa: ANN003
        captured.update(kwargs)

    with patch.object(wrap_mod.shutil, "which", return_value="kimi"):
        with patch.object(wrap_mod, "_launch_tool", side_effect=fake_launch_tool):
            with patch.object(wrap_mod, "_project_name_from_cwd", return_value=None):
                result = runner.invoke(main, ["wrap", "kimi", "--port", "9999"])

    assert result.exit_code == 0, result.output
    assert captured["port"] == 9999
    assert captured["env"]["KIMI_CODE_BASE_URL"] == "http://127.0.0.1:9999/v1"
    assert captured["env"]["KIMI_BASE_URL"] == "http://127.0.0.1:9999/v1"


def test_non_kimi_fallback_display_is_unchanged(
    capfd: pytest.CaptureFixture[str], tmp_path: Path
) -> None:
    env = {**os.environ, "OTHER_BASE_URL": "http://127.0.0.1:8787/v1"}
    display = ["OTHER_BASE_URL=http://127.0.0.1:8787/v1"]
    child_result = tmp_path / "other-child.txt"
    child = (
        "import os; from pathlib import Path; Path(r'"
        f"{child_result}"
        "').write_text('CHILD|' + os.environ['OTHER_BASE_URL'])"
    )

    with (
        patch.object(wrap_mod, "_make_cleanup", return_value=lambda: None),
        patch.object(wrap_mod.signal, "signal"),
        patch.object(wrap_mod, "_register_proxy_client"),
        patch.object(wrap_mod, "_ensure_proxy", return_value=(None, 9001)),
        patch.object(wrap_mod, "_unregister_proxy_client"),
        patch.object(wrap_mod, "_push_runtime_env"),
        patch.object(wrap_mod, "_configure_quiet_cli_env", return_value=[]),
    ):
        with pytest.raises(SystemExit) as raised:
            wrap_mod._launch_tool(
                binary=os.fspath(Path(sys.executable)),
                args=("-c", child),
                env=env,
                port=8787,
                no_proxy=False,
                tool_label="OTHER",
                env_vars_display=display,
            )

    assert raised.value.code == 0
    output = capfd.readouterr().out
    assert "OTHER_BASE_URL=http://127.0.0.1:8787/v1" in output
    assert child_result.read_text() == "CHILD|http://127.0.0.1:9001/v1"


def test_wrap_kimi_custom_api_url(
    runner: CliRunner,
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    """--kimi-api-url overrides the upstream endpoint passed to _launch_tool."""
    monkeypatch.chdir(tmp_path)
    monkeypatch.delenv("HEADROOM_CONTEXT_TOOL", raising=False)

    captured: dict[str, Any] = {}

    def fake_launch_tool(**kwargs: Any) -> None:  # noqa: ANN003
        captured.update(kwargs)

    with patch.object(wrap_mod.shutil, "which", return_value="kimi"):
        with patch.object(wrap_mod, "_launch_tool", side_effect=fake_launch_tool):
            with patch.object(wrap_mod, "_project_name_from_cwd", return_value=None):
                result = runner.invoke(
                    main,
                    ["wrap", "kimi", "--kimi-api-url", "https://api.moonshot.ai/v1"],
                )

    assert result.exit_code == 0, result.output
    assert captured["openai_api_url"] == "https://api.moonshot.ai/v1"


def test_wrap_kimi_no_proxy(
    runner: CliRunner,
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    """--no-proxy flag prevents proxy startup."""
    monkeypatch.chdir(tmp_path)
    monkeypatch.delenv("HEADROOM_CONTEXT_TOOL", raising=False)

    captured: dict[str, Any] = {}

    def fake_launch_tool(**kwargs: Any) -> None:  # noqa: ANN003
        captured.update(kwargs)

    with patch.object(wrap_mod.shutil, "which", return_value="kimi"):
        with patch.object(wrap_mod, "_launch_tool", side_effect=fake_launch_tool):
            with patch.object(wrap_mod, "_project_name_from_cwd", return_value=None):
                result = runner.invoke(main, ["wrap", "kimi", "--no-proxy"])

    assert result.exit_code == 0, result.output
    assert captured["no_proxy"] is True


def test_wrap_kimi_learn_memory(
    runner: CliRunner,
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    """--learn and --memory flags are passed to _launch_tool."""
    monkeypatch.chdir(tmp_path)
    monkeypatch.delenv("HEADROOM_CONTEXT_TOOL", raising=False)

    captured: dict[str, Any] = {}

    def fake_launch_tool(**kwargs: Any) -> None:  # noqa: ANN003
        captured.update(kwargs)

    with patch.object(wrap_mod.shutil, "which", return_value="kimi"):
        with patch.object(wrap_mod, "_launch_tool", side_effect=fake_launch_tool):
            with patch.object(wrap_mod, "_project_name_from_cwd", return_value=None):
                result = runner.invoke(main, ["wrap", "kimi", "--learn", "--memory"])

    assert result.exit_code == 0, result.output
    assert captured["learn"] is True
    assert captured["memory"] is True