import json
from pathlib import Path

import pytest

from browser_cli.client import (
    BrowserNotConnected,
    _resolve_socket,
    active_browser_targets,
    display_browser_name,
    save_remote_token,
    token_for_remote,
)
from browser_cli.platform import endpoint_for_alias

def test_resolve_socket_raises_when_registry_missing(monkeypatch):
    monkeypatch.delenv("BROWSER_CLI_PROFILE", raising=False)
    monkeypatch.setattr("browser_cli.client.REGISTRY_PATH", Path("/nonexistent/browser-cli-registry.json"))

    with pytest.raises(BrowserNotConnected, match="Cannot resolve a browser socket automatically"):
        _resolve_socket()

def test_resolve_socket_uses_only_active_registry_entry(monkeypatch, tmp_path):
    monkeypatch.delenv("BROWSER_CLI_PROFILE", raising=False)

    socket_path = tmp_path / "browser.sock"
    socket_path.write_text("")
    registry_path = tmp_path / "registry.json"
    registry_path.write_text(json.dumps({"abc-uuid": str(socket_path)}))

    monkeypatch.setattr("browser_cli.client.REGISTRY_PATH", registry_path)

    assert _resolve_socket() == str(socket_path)

def test_resolve_socket_raises_when_multiple_active_entries(monkeypatch, tmp_path):
    monkeypatch.delenv("BROWSER_CLI_PROFILE", raising=False)

    first_socket = tmp_path / "one.sock"
    second_socket = tmp_path / "two.sock"
    first_socket.write_text("")
    second_socket.write_text("")
    registry_path = tmp_path / "registry.json"
    registry_path.write_text(json.dumps({"uuid-1": str(first_socket), "uuid-2": str(second_socket)}))

    monkeypatch.setattr("browser_cli.client.REGISTRY_PATH", registry_path)

    with pytest.raises(BrowserNotConnected, match="Multiple browser instances are active: uuid-1, uuid-2"):
        _resolve_socket()


def test_display_browser_name_uses_uuid_stem_for_default():
    assert display_browser_name("default", "/tmp/.browser_cli/550e8400-e29b-41d4-a716-446655440000.sock") == (
        "550e8400-e29b-41d4-a716-446655440000"
    )


def test_resolve_socket_uses_platform_endpoint_for_explicit_alias(monkeypatch):
    monkeypatch.delenv("BROWSER_CLI_PROFILE", raising=False)
    monkeypatch.setattr("browser_cli.client.REGISTRY_PATH", Path("/nonexistent/browser-cli-registry.json"))

    assert _resolve_socket("work") == endpoint_for_alias("work")


def test_active_browser_targets_filters_stale_entries(monkeypatch, tmp_path):
    active_socket = tmp_path / "work.sock"
    active_socket.write_text("")
    stale_socket = tmp_path / "stale.sock"
    registry_path = tmp_path / "registry.json"
    registry_path.write_text(json.dumps({"work": str(active_socket), "default": str(stale_socket)}))

    monkeypatch.setattr("browser_cli.client.REGISTRY_PATH", registry_path)

    targets = active_browser_targets(include_remotes=False)

    assert len(targets) == 1
    assert targets[0].profile == "work"
    assert targets[0].display_name == "work"


def test_active_browser_targets_keeps_windows_registry_entries(monkeypatch, tmp_path):
    registry_path = tmp_path / "registry.json"
    registry_path.write_text(json.dumps({"work": r"\\.\pipe\browser-cli-work"}))

    monkeypatch.setattr("browser_cli.client.REGISTRY_PATH", registry_path)
    monkeypatch.setattr("browser_cli.client.is_windows", lambda: True)

    targets = active_browser_targets(include_remotes=False)

    assert len(targets) == 1
    assert targets[0].socket_path == r"\\.\pipe\browser-cli-work"


def test_save_remote_token_persists_per_endpoint(monkeypatch, tmp_path):
    remotes_path = tmp_path / "remotes.json"
    monkeypatch.setattr("browser_cli.client.REMOTE_REGISTRY_PATH", remotes_path)

    endpoint = "browser-host.example:8765"

    save_remote_token(endpoint, "secret-token")

    assert token_for_remote(endpoint) == "secret-token"
    assert json.loads(remotes_path.read_text(encoding="utf-8")) == {
        endpoint: {"token": "secret-token"}
    }


def test_active_browser_targets_includes_remote_targets(monkeypatch, tmp_path):
    remotes_path = tmp_path / "remotes.json"
    endpoint = "browser-host.example:8765"
    remotes_path.write_text(json.dumps({endpoint: {"token": "secret-token"}}), encoding="utf-8")
    monkeypatch.setattr("browser_cli.client.REGISTRY_PATH", tmp_path / "missing-registry.json")
    monkeypatch.setattr("browser_cli.client.REMOTE_REGISTRY_PATH", remotes_path)

    def fake_send_command(command, args=None, profile=None, remote=None, token=None):
        assert command == "browser-cli.targets"
        assert remote == endpoint
        assert token == "secret-token"
        return [{"profile": "work", "displayName": "work"}]

    monkeypatch.setattr("browser_cli.client.send_command", fake_send_command)

    targets = active_browser_targets()

    assert len(targets) == 1
    assert targets[0].profile == "work"
    assert targets[0].display_name == "browser-host.example:work"
    assert targets[0].remote == endpoint
    assert targets[0].token == "secret-token"