import sys
from pathlib import Path

import pytest

sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "src"))

from llamacppctl.cli import build_parser, validate_args  # noqa: E402


def parse(argv):
    parser = build_parser()
    args = parser.parse_args(argv)
    validate_args(args, parser)
    return args


def parse_error(argv):
    parser = build_parser()
    with pytest.raises(SystemExit):
        args = parser.parse_args(argv)
        validate_args(args, parser)


def test_requires_one_action():
    parse_error([])


def test_actions_are_mutually_exclusive():
    parse_error(["--start", "--stop"])


def test_start_is_valid_minimal():
    args = parse(["--start"])
    assert args.start is True


def test_chat_requires_prompt_source():
    parse_error(["--chat"])


def test_chat_with_prompt_is_valid():
    args = parse(["--chat", "-p", "hello"])
    assert args.chat is True
    assert args.prompt == "hello"


def test_stop_rejects_prompt_sources():
    parse_error(["--stop", "-p", "hello"])


def test_stop_rejects_system_sources():
    parse_error(["--stop", "-s", "system text"])


def test_check_with_system_but_no_prompt_rejected():
    parse_error(["--check", "-s", "system text"])


def test_check_with_system_and_prompt_ok():
    args = parse(["--check", "-s", "system text", "-p", "hello"])
    assert args.check is True


def test_mutually_exclusive_system_sources():
    parse_error(["--start", "-s", "a", "--system-file", "b.txt"])


def test_mutually_exclusive_prompt_sources():
    parse_error(["--start", "-p", "a", "--prompt-url", "https://example.com/p"])


def test_max_input_bytes_must_be_positive():
    parse_error(["--start", "--max-input-bytes", "0"])


def test_negative_max_input_bytes_rejected():
    parse_error(["--start", "--max-input-bytes", "-5"])


def test_connect_timeout_must_be_positive():
    parse_error(["--start", "--connect-timeout", "0"])


def test_read_timeout_must_be_positive():
    parse_error(["--start", "--read-timeout", "-1"])


def test_allow_private_url_conflicts_with_allowlist():
    parse_error(["--start", "--allow-private-url", "--url-allow-host", "example.com"])


def test_host_port_out_of_range_rejected():
    parse_error(["--start", "--host-port", "70000"])


def test_host_port_zero_rejected():
    parse_error(["--start", "--host-port", "0"])


def test_container_port_out_of_range_rejected():
    parse_error(["--start", "--container-port", "-1"])


def test_container_name_empty_string_rejected():
    parse_error(["--start", "--container-name", "   "])


def test_container_name_valid():
    args = parse(["--start", "--container-name", "my_llm"])
    assert args.container_name == "my_llm"


def test_boolean_flag_pairs_default_none():
    args = parse(["--start"])
    assert args.jinja is None
    assert args.fa is None
    assert args.kv_unified is None
    assert args.cont_batching is None
    assert args.no_context_shift is None


def test_boolean_flag_pairs_explicit_true_false():
    args = parse(["--start", "--jinja", "--no-fa"])
    assert args.jinja is True
    assert args.fa is False


def test_dry_run_flag():
    args = parse(["--start", "--dry-run"])
    assert args.dry_run is True


def test_print_effective_config_flag():
    args = parse(["--start", "--print-effective-config"])
    assert args.print_effective_config is True


def test_reasoning_choice_validated():
    parse_error(["--start", "--reasoning", "maybe"])


def test_reasoning_choice_valid():
    args = parse(["--start", "--reasoning", "off"])
    assert args.reasoning == "off"