from pathlib import Path

import pytest

from audita.config import AuditaConfig, ConfigOverrides
from audita.config import DEFAULT_GLOSSARY_MAX_LLM_PASSES, DEFAULT_MAX_RETRIES, DEFAULT_MAX_SECTION_TOKENS, DEFAULT_WORK_DIR
from audita.errors import AuditaConfigError


def test_config_uses_defaults_with_api_key():
    config = AuditaConfig.from_sources(env={"OPENROUTER_API_KEY": "key"})

    assert config.max_section_tokens == DEFAULT_MAX_SECTION_TOKENS
    assert config.max_retries == DEFAULT_MAX_RETRIES
    assert config.glossary_max_llm_passes == DEFAULT_GLOSSARY_MAX_LLM_PASSES
    assert config.work_dir == Path(DEFAULT_WORK_DIR)


def test_config_env_overrides_defaults():
    config = AuditaConfig.from_sources(
        env={
            "OPENROUTER_API_KEY": "key",
            "AUDITA_MAX_SECTION_TOKENS": "42",
            "AUDITA_CONFIDENCE_THRESHOLD": "0.9",
            "AUDITA_MAX_RETRIES": "5",
            "AUDITA_GLOSSARY_MAX_LLM_PASSES": "7",
            "AUDITA_WORK_DIR": "/tmp/custom-audita",
        }
    )

    assert config.max_section_tokens == 42
    assert config.confidence_threshold == 0.9
    assert config.max_retries == 5
    assert config.glossary_max_llm_passes == 7
    assert config.work_dir == Path("/tmp/custom-audita")


def test_config_cli_overrides_env():
    config = AuditaConfig.from_sources(
        env={
            "OPENROUTER_API_KEY": "key",
            "AUDITA_MAX_SECTION_TOKENS": "42",
            "AUDITA_MAX_RETRIES": "5",
            "AUDITA_GLOSSARY_MAX_LLM_PASSES": "7",
            "AUDITA_WORK_DIR": "/tmp/env-audita",
        },
        overrides=ConfigOverrides(
            max_section_tokens=100,
            max_retries=3,
            glossary_max_llm_passes=2,
            work_dir=Path("/tmp/cli-audita"),
        ),
    )

    assert config.max_section_tokens == 100
    assert config.max_retries == 3
    assert config.glossary_max_llm_passes == 2
    assert config.work_dir == Path("/tmp/cli-audita")


def test_config_requires_api_key():
    with pytest.raises(AuditaConfigError):
        AuditaConfig.from_sources(env={})


def test_config_rejects_bad_env_int():
    with pytest.raises(AuditaConfigError):
        AuditaConfig.from_sources(
            env={"OPENROUTER_API_KEY": "key", "AUDITA_MAX_SECTION_TOKENS": "many"}
        )


def test_config_rejects_invalid_glossary_pass_count():
    with pytest.raises(AuditaConfigError):
        AuditaConfig.from_sources(
            env={"OPENROUTER_API_KEY": "key", "AUDITA_GLOSSARY_MAX_LLM_PASSES": "0"}
        )