from __future__ import annotations

import click
import pytest

from headroom.install.models import ConfigScope, InstallPreset, ProviderSelectionMode, ToolTarget
from headroom.install.planner import PROVIDER_SCOPE_TARGETS, build_manifest, resolve_targets


def test_resolve_targets_auto_falls_back_when_detection_empty(monkeypatch) -> None:
    monkeypatch.setattr("headroom.install.planner.detect_targets", lambda: [])

    targets = resolve_targets(ProviderSelectionMode.AUTO.value, [])

    assert targets == [
        ToolTarget.CLAUDE.value,
        ToolTarget.CODEX.value,
        ToolTarget.COPILOT.value,
    ]


def test_build_manifest_for_persistent_docker_sets_expected_defaults() -> None:
    manifest = build_manifest(
        profile="default",
        preset=InstallPreset.PERSISTENT_DOCKER.value,
        runtime_kind="docker",
        scope="user",
        provider_mode="manual",
        targets=["claude", "copilot"],
        port=8787,
        backend="anthropic",
        anyllm_provider=None,
        region=None,
        proxy_mode="token",
        memory_enabled=True,
        telemetry_enabled=False,
        image="ghcr.io/chopratejas/headroom:latest",
    )

    assert manifest.supervisor_kind == "none"
    assert manifest.runtime_kind == "docker"
    assert manifest.health_url == "http://127.0.0.1:8787/readyz"
    assert manifest.base_env["HEADROOM_PORT"] == "8787"
    assert manifest.base_env["HEADROOM_TELEMETRY"] == "off"
    assert "--no-telemetry" in manifest.proxy_args
    assert manifest.tool_envs["claude"]["ANTHROPIC_BASE_URL"] == "http://127.0.0.1:8787"
    assert manifest.tool_envs["copilot"]["COPILOT_PROVIDER_TYPE"] == "anthropic"
    assert "--memory" in manifest.proxy_args


def test_build_manifest_uses_provider_slice_env_builders_for_all_supported_targets() -> None:
    manifest = build_manifest(
        profile="default",
        preset=InstallPreset.PERSISTENT_SERVICE.value,
        runtime_kind="python",
        scope="user",
        provider_mode="manual",
        targets=["claude", "copilot", "codex", "aider", "cursor"],
        port=9999,
        backend="anyllm",
        anyllm_provider="groq",
        region=None,
        proxy_mode="token",
        memory_enabled=False,
        telemetry_enabled=True,
        image="ghcr.io/chopratejas/headroom:latest",
    )

    # telemetry_enabled=True must write the explicit opt-in value + flag.
    assert manifest.base_env["HEADROOM_TELEMETRY"] == "on"
    assert "--telemetry" in manifest.proxy_args
    assert manifest.tool_envs["claude"]["ANTHROPIC_BASE_URL"] == "http://127.0.0.1:9999"
    assert manifest.tool_envs["codex"]["OPENAI_BASE_URL"] == "http://127.0.0.1:9999/v1"
    assert manifest.tool_envs["aider"] == {
        "OPENAI_API_BASE": "http://127.0.0.1:9999/v1",
        "ANTHROPIC_BASE_URL": "http://127.0.0.1:9999",
    }
    assert manifest.tool_envs["cursor"] == {
        "OPENAI_BASE_URL": "http://127.0.0.1:9999/v1",
        "ANTHROPIC_BASE_URL": "http://127.0.0.1:9999",
    }
    assert manifest.tool_envs["copilot"] == {
        "COPILOT_PROVIDER_TYPE": "openai",
        "COPILOT_PROVIDER_BASE_URL": "http://127.0.0.1:9999/v1",
        "COPILOT_PROVIDER_WIRE_API": "completions",
    }


def test_resolve_targets_provider_scope_auto_excludes_copilot(monkeypatch) -> None:
    monkeypatch.setattr("headroom.install.planner.detect_targets", lambda: [])

    targets = resolve_targets(
        ProviderSelectionMode.AUTO.value,
        [],
        scope=ConfigScope.PROVIDER.value,
    )

    assert targets == [ToolTarget.CLAUDE.value, ToolTarget.CODEX.value]


def test_resolve_targets_manual_dedupes_and_filters_invalid() -> None:
    targets = resolve_targets(
        ProviderSelectionMode.MANUAL.value,
        ["claude", "copilot", "claude", "invalid"],
    )

    assert targets == [ToolTarget.CLAUDE.value, ToolTarget.COPILOT.value]


def test_build_manifest_omits_no_http2_by_default() -> None:
    manifest = build_manifest(
        profile="default",
        preset=InstallPreset.PERSISTENT_SERVICE.value,
        runtime_kind="python",
        scope="user",
        provider_mode="manual",
        targets=["claude"],
        port=8787,
        backend="anthropic",
        anyllm_provider=None,
        region=None,
        proxy_mode="token",
        memory_enabled=False,
        telemetry_enabled=True,
        image="ghcr.io/chopratejas/headroom:latest",
    )

    assert "--no-http2" not in manifest.proxy_args


def test_build_manifest_persists_no_http2_override() -> None:
    manifest = build_manifest(
        profile="default",
        preset=InstallPreset.PERSISTENT_SERVICE.value,
        runtime_kind="python",
        scope="user",
        provider_mode="manual",
        targets=["claude"],
        port=8787,
        backend="anthropic",
        anyllm_provider=None,
        region=None,
        proxy_mode="token",
        memory_enabled=False,
        telemetry_enabled=True,
        image="ghcr.io/chopratejas/headroom:latest",
        no_http2=True,
    )

    assert manifest.proxy_args.count("--no-http2") == 1
    assert "HEADROOM_HTTP2" not in manifest.base_env


def test_resolve_targets_provider_scope_all_ignores_unsupported_requested() -> None:
    """`all` mode never consults the requested list, so an unsupported entry
    like `cursor` must not make it raise — it should return the full provider
    target set (regression: this used to raise a ClickException)."""
    targets = resolve_targets(
        ProviderSelectionMode.ALL.value,
        ["cursor"],
        scope=ConfigScope.PROVIDER.value,
    )

    assert targets == [t.value for t in PROVIDER_SCOPE_TARGETS]


def test_resolve_targets_provider_scope_auto_ignores_unsupported_requested(monkeypatch) -> None:
    """`auto` mode also ignores the requested list, so an unsupported entry
    must not raise."""
    monkeypatch.setattr("headroom.install.planner.detect_targets", lambda: [])

    targets = resolve_targets(
        ProviderSelectionMode.AUTO.value,
        ["cursor"],
        scope=ConfigScope.PROVIDER.value,
    )

    assert targets == [ToolTarget.CLAUDE.value, ToolTarget.CODEX.value]


def test_resolve_targets_provider_scope_manual_rejects_unsupported() -> None:
    """The manual path DOES consult the requested list, so an unsupported
    target under provider scope must still be rejected."""
    with pytest.raises(click.ClickException, match="cursor"):
        resolve_targets(
            ProviderSelectionMode.MANUAL.value,
            ["cursor"],
            scope=ConfigScope.PROVIDER.value,
        )